From bbf6b8a3c5cf96f0fc59e2ab6eadf2c7f22b9baa Mon Sep 17 00:00:00 2001
From: XProger <xproger@list.ru>
Date: Mon, 19 Jun 2017 04:42:00 +0300
Subject: [PATCH] #11 inventory screen; #27 unified controls preset (old school
 as default)

---
 src/cache.h                                   |  28 +-
 src/camera.h                                  |   3 +-
 src/collision.h                               |  14 +-
 src/controller.h                              |  26 +-
 src/core.h                                    |  66 ++-
 src/debug.h                                   |  12 +-
 src/format.h                                  | 113 +++-
 src/game.h                                    |  20 +-
 src/input.h                                   | 210 ++++++-
 src/inventory.h                               | 541 +++++++++++++++++-
 src/lara.h                                    |  91 ++-
 src/level.h                                   | 324 +++++------
 src/mesh.h                                    | 149 +++--
 .../android/app/src/main/cpp/main.cpp         |   2 +-
 src/platform/nix/main.cpp                     |   2 +-
 src/platform/osx/main.cpp                     |   2 +-
 src/platform/web/index.html                   |   8 +-
 src/platform/web/main.cpp                     |   2 +-
 src/platform/win/OpenLara.vcxproj.filters     |  25 +-
 src/platform/win/main.cpp                     |   2 +-
 src/shader.h                                  |   2 +-
 src/shaders/filter.glsl                       | 104 ++--
 src/shaders/gui.glsl                          |  34 +-
 src/ui.h                                      | 207 +++----
 src/utils.h                                   |  31 +-
 25 files changed, 1412 insertions(+), 606 deletions(-)

diff --git a/src/cache.h b/src/cache.h
index 1d85636..670d756 100644
--- a/src/cache.h
+++ b/src/cache.h
@@ -70,6 +70,9 @@ struct ShaderCache {
         }
 
         compile(Core::passFilter, Shader::FILTER_DOWNSAMPLE, FX_NONE);
+        compile(Core::passFilter, Shader::FILTER_GRAYSCALE,  FX_NONE);
+        compile(Core::passFilter, Shader::FILTER_BLUR,       FX_NONE);
+        compile(Core::passFilter, Shader::FILTER_MIXER,      FX_NONE);
 
         compile(Core::passCompose, Shader::ROOM,   FX_NONE);
         compile(Core::passCompose, Shader::ROOM,   FX_ALPHA_TEST);
@@ -106,16 +109,16 @@ struct ShaderCache {
         char def[1024], ext[255];
         ext[0] = 0;
         if (Core::settings.shadows) {
-		    if (Core::support.shadowSampler) {
-			    #ifdef MOBILE
-				    strcat(ext, "#extension GL_EXT_shadow_samplers : require\n");
-			    #endif
-			    strcat(ext, "#define SHADOW_SAMPLER\n");
-		    } else {
-			    if (Core::support.depthTexture)
-				    strcat(ext, "#define SHADOW_DEPTH\n");
-			    else
-				    strcat(ext, "#define SHADOW_COLOR\n");
+            if (Core::support.shadowSampler) {
+                #ifdef MOBILE
+                    strcat(ext, "#extension GL_EXT_shadow_samplers : require\n");
+                #endif
+                strcat(ext, "#define SHADOW_SAMPLER\n");
+            } else {
+                if (Core::support.depthTexture)
+                    strcat(ext, "#define SHADOW_DEPTH\n");
+                else
+                    strcat(ext, "#define SHADOW_COLOR\n");
             }
         }
 
@@ -153,7 +156,7 @@ struct ShaderCache {
                 break;
             }
             case Core::passFilter  : {
-                static const char *typeNames[] = { "DEFAULT", "DOWNSAMPLE" };
+                static const char *typeNames[] = { "DEFAULT", "DOWNSAMPLE", "GRAYSCALE", "BLUR", "MIXER" };
                 src = FILTER;
                 typ = typeNames[type];
                 sprintf(def, "%s#define PASS_%s\n#define FILTER_%s\n", ext, passNames[pass], typ);
@@ -654,9 +657,8 @@ struct WaterCache {
             Item &item = items[i];
             if (!item.visible) continue;
 
-            item.mask->bind(sMask);
-
             if (item.timer >= SIMULATE_TIMESTEP || dropCount) {
+                item.mask->bind(sMask);
             // add water drops
                 drop(item);                    
             // simulation step
diff --git a/src/camera.h b/src/camera.h
index cbff22a..94c6df8 100644
--- a/src/camera.h
+++ b/src/camera.h
@@ -277,7 +277,8 @@ struct Camera : Controller {
     }
 
     mat4 getProjMatrix() {
-        return mat4(fov, Core::viewport.z / Core::viewport.w, znear, zfar);
+        return mat4(fov, float(Core::width) / float(Core::height), znear, zfar);
+        //return mat4(fov, Core::viewport.z / Core::viewport.w, znear, zfar);
     }
 
     virtual void setup(bool calcMatrices) {
diff --git a/src/collision.h b/src/collision.h
index e2d5535..e9bb4aa 100644
--- a/src/collision.h
+++ b/src/collision.h
@@ -90,16 +90,16 @@ struct Collision {
     }
 
     inline float getOffset(float from, float to) {
-	    int a = int(from) / 1024;
-	    int b = int(to)   / 1024;
+        int a = int(from) / 1024;
+        int b = int(to)   / 1024;
 
-	    from -= float(a * 1024.0f);
+        from -= float(a * 1024.0f);
 
-	    if (b == a)
-		    return 0.0f;
+        if (b == a)
+            return 0.0f;
         else if (b > a)
-		    return -from + 1025.0f;
-		return -from - 1.0f;
+            return -from + 1025.0f;
+        return -from - 1.0f;
     }
 
     static int getFloor(TR::Level *level, int &roomIndex, const vec3 &pos) {
diff --git a/src/controller.h b/src/controller.h
index c5a898a..c4a8a13 100644
--- a/src/controller.h
+++ b/src/controller.h
@@ -26,9 +26,15 @@ struct IGame {
     virtual void updateParams() {}
     virtual void waterDrop(const vec3 &pos, float radius, float strength) {}
     virtual void setShader(Core::Pass pass, Shader::Type type, bool underwater = false, bool alphaTest = false) {}
+    virtual void setupBinding() {}
     virtual void renderEnvironment(int roomIndex, const vec3 &pos, Texture **targets, int stride = 0) {}
     virtual void renderCompose(int roomIndex, bool genShadowMask = false) {}
     virtual void fxQuake(float time) {}
+
+    virtual bool invUse(TR::Entity::Type item, TR::Entity::Type slot) { return false; }
+    virtual void invAdd(TR::Entity::Type type, int count = 1) {}
+
+    virtual Sound::Sample* playSound(int id, const vec3 &pos, int flags, int group = -1) const { return NULL; }
 };
 
 struct Controller {
@@ -181,25 +187,7 @@ struct Controller {
     }
 
     Sound::Sample* playSound(int id, const vec3 &pos, int flags) const {
-        if (level->version == TR::Level::VER_TR1_PSX && id == TR::SND_SECRET)
-            return NULL;
-
-        int16 a = level->soundsMap[id];
-        if (a == -1) return NULL;
-
-        TR::SoundInfo &b = level->soundsInfo[a];
-        if (b.chance == 0 || (rand() & 0x7fff) <= b.chance) {
-            int   index  = b.offset + rand() % b.flags.count;
-            float volume = (float)b.volume / 0x7FFF;
-            float pitch  = b.flags.pitch ? (0.9f + randf() * 0.2f) : 1.0f; 
-            if (b.flags.mode == 1) flags |= Sound::UNIQUE;
-            //if (b.flags.mode == 2) flags |= Sound::REPLAY;
-            if (b.flags.mode == 3) flags |= Sound::SYNC;
-            if (b.flags.gain) volume = max(0.0f, volume - randf() * 0.25f);
-            if (b.flags.fixed) flags |= Sound::LOOP;
-            return Sound::play(level->getSampleStream(index), pos, volume, pitch, flags, entity * 1000 + index);
-        }
-        return NULL;
+        return game->playSound(id, pos, flags, entity);
     }
 
     vec3 getDir() const {
diff --git a/src/core.h b/src/core.h
index e8297aa..b5f1cce 100644
--- a/src/core.h
+++ b/src/core.h
@@ -123,6 +123,11 @@
     #define glActiveStencilFaceEXT(...)
 #endif
 
+namespace Core {
+    float deltaTime;
+    int width, height;
+}
+
 #include "utils.h"
 #include "input.h"
 #include "sound.h"
@@ -290,8 +295,6 @@ enum BlendMode { bmNone, bmAlpha, bmAdd, bmMultiply, bmScreen };
 extern int getTime();
 
 namespace Core {
-    int width, height;
-    float deltaTime;
     float eye;
     vec4 viewport, viewportDef;
     vec4 scissor;
@@ -307,6 +310,8 @@ namespace Core {
     enum Pass { passCompose, passShadow, passAmbient, passWater, passFilter, passVolume, passGUI, passMAX } pass;
 
     GLuint FBO, defaultFBO;
+    Texture *defaultTarget;
+
     struct RenderTargetCache {
         int count;
         struct Item {
@@ -322,6 +327,8 @@ namespace Core {
         Texture     *target;
         int         targetFace;
         GLuint      VAO;
+        GLuint      iBuffer;
+        GLuint      vBuffer;
         BlendMode   blendMode;
         CullMode    cullMode;
         bool        stencilTwoSide;
@@ -371,7 +378,7 @@ namespace Core {
     }
 
     void init() {
-        Input::reset();
+        Input::init();
         #ifdef ANDROID
             void *libGL = dlopen("libGLESv2.so", RTLD_LAZY);
         #endif
@@ -499,6 +506,7 @@ namespace Core {
         glGetIntegerv(GL_FRAMEBUFFER_BINDING, (GLint*)&defaultFBO);
         glGenFramebuffers(1, &FBO);
         memset(rtCache, 0, sizeof(rtCache));
+        defaultTarget = NULL;
 
         Sound::init();
 
@@ -564,9 +572,13 @@ namespace Core {
         glClearStencil(value);
     }
 
+    void setViewport(const vec4 &vp) {
+        glViewport(int(vp.x), int(vp.y), int(vp.z), int(vp.w));
+        viewport = vp;
+    }
+
     void setViewport(int x, int y, int width, int height) {
-        glViewport(x, y, width, height);
-        viewport = vec4(float(x), float(y), float(width), float(height));
+        setViewport(vec4(float(x), float(y), float(width), float(height)));
     }
 
     void setScissor(int x, int y, int width, int height) {
@@ -699,31 +711,35 @@ namespace Core {
     }
 
     void setTarget(Texture *target, bool clear = false, int face = 0) {
-        if (target == active.target && face == active.targetFace)
-            return;
+        if (!target && defaultTarget)
+            target = defaultTarget;
 
-        if (!target)  {
-            glBindFramebuffer(GL_FRAMEBUFFER, defaultFBO);
-            glColorMask(true, true, true, true);
+        if (target != active.target || face != active.targetFace) {
+            if (!target)  {
+                glBindFramebuffer(GL_FRAMEBUFFER, defaultFBO);
+                glColorMask(true, true, true, true);
 
-            setViewport(int(viewportDef.x), int(viewportDef.y), int(viewportDef.z), int(viewportDef.w));
-        } else {
-            if (active.target == NULL)
-                viewportDef = viewport;
-            GLenum texTarget = GL_TEXTURE_2D;
-            if (target->cube) 
-                texTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
+                setViewport(int(viewportDef.x), int(viewportDef.y), int(viewportDef.z), int(viewportDef.w));
+            } else {
+                if (active.target == NULL || active.target == defaultTarget)
+                    viewportDef = viewport;
+                GLenum texTarget = GL_TEXTURE_2D;
+                if (target->cube) 
+                    texTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X + face;
 
-            bool depth   = target->format == Texture::DEPTH || target->format == Texture::SHADOW;
-            int  rtIndex = cacheRenderTarget(depth, target->width, target->height);
+                bool depth   = target->format == Texture::DEPTH || target->format == Texture::SHADOW;
+                int  rtIndex = cacheRenderTarget(depth, target->width, target->height);
 
-            glBindFramebuffer(GL_FRAMEBUFFER, FBO);
-            glFramebufferTexture2D    (GL_FRAMEBUFFER, depth ? GL_DEPTH_ATTACHMENT  : GL_COLOR_ATTACHMENT0, texTarget,       target->ID, 0);
-            glFramebufferRenderbuffer (GL_FRAMEBUFFER, depth ? GL_COLOR_ATTACHMENT0 : GL_DEPTH_ATTACHMENT,  GL_RENDERBUFFER, rtCache[depth].items[rtIndex].ID);
+                glBindFramebuffer(GL_FRAMEBUFFER, FBO);
+                glFramebufferTexture2D    (GL_FRAMEBUFFER, depth ? GL_DEPTH_ATTACHMENT  : GL_COLOR_ATTACHMENT0, texTarget,       target->ID, 0);
+                glFramebufferRenderbuffer (GL_FRAMEBUFFER, depth ? GL_COLOR_ATTACHMENT0 : GL_DEPTH_ATTACHMENT,  GL_RENDERBUFFER, rtCache[depth].items[rtIndex].ID);
 
-            if (depth)
-                glColorMask(false, false, false, false);
-            setViewport(0, 0, target->width, target->height);
+                if (depth)
+                    glColorMask(false, false, false, false);
+                else
+                    glColorMask(true, true, true, true);
+                setViewport(0, 0, target->width, target->height);
+            }
         }
 
         if (clear)
diff --git a/src/debug.h b/src/debug.h
index 1e19566..b05da50 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -173,13 +173,13 @@ namespace Debug {
         }
 
         void text(const vec3 &pos, const vec4 &color, const char *str) {
-			vec4 p = Core::mViewProj * vec4(pos, 1);
-			if (p.w > 0) {
-				p.xyz = p.xyz * (1.0f / p.w);
-				p.y = -p.y;	
-				p.xyz = (p.xyz * 0.5f + vec3(0.5f)) * vec3(Core::width, Core::height, 1.0f);	
+            vec4 p = Core::mViewProj * vec4(pos, 1);
+            if (p.w > 0) {
+                p.xyz = p.xyz * (1.0f / p.w);
+                p.y = -p.y;	
+                p.xyz = (p.xyz * 0.5f + vec3(0.5f)) * vec3(Core::width, Core::height, 1.0f);	
                 text(vec2(p.x, p.y), color, str);
-			}
+            }
         }
     }
 
diff --git a/src/format.h b/src/format.h
index 9072c80..429b28e 100644
--- a/src/format.h
+++ b/src/format.h
@@ -80,7 +80,7 @@
     E( BRIDGE_0              ) \
     E( BRIDGE_1              ) \
     E( BRIDGE_2              ) \
-    E( INV_GAME              ) \
+    E( INV_PASSPORT          ) \
     E( INV_COMPASS           ) \
     E( INV_HOME              ) \
     E( GEARS_1               ) \
@@ -90,7 +90,7 @@
     E( CUT_2                 ) \
     E( CUT_3                 ) \
     E( CUT_4                 ) \
-    E( INV_GAME_CLOSED       ) \
+    E( INV_PASSPORT_CLOSED   ) \
     E( INV_MAP               ) \
     E( CRYSTAL               ) \
     E( WEAPON_PISTOLS        ) \
@@ -107,12 +107,12 @@
     E( INV_DETAIL            ) \
     E( INV_SOUND             ) \
     E( INV_CONTROLS          ) \
-    E( INV_FLASHLIGHT        ) \
+    E( INV_GAMMA             ) \
     E( INV_PISTOLS           ) \
     E( INV_SHOTGUN           ) \
     E( INV_MAGNUMS           ) \
     E( INV_UZIS              ) \
-    E( INV_AMMO_POSTOLS      ) \
+    E( INV_AMMO_PISTOLS      ) \
     E( INV_AMMO_SHOTGUN      ) \
     E( INV_AMMO_MAGNUMS      ) \
     E( INV_AMMO_UZIS         ) \
@@ -291,14 +291,14 @@ namespace TR {
         
         SND_UNDERWATER      = 60,
         
-        SND_MENU_SPIN       = 108,
-        SND_MENU_HOME       = 109,
-        SND_MENU_CONTROLS   = 110,
-        SND_MENU_SHOW       = 111,
-        SND_MENU_HIDE       = 112,
-        SND_MENU_COMPASS    = 113,
-        SND_MENU_WEAPON     = 114,
-        SND_MENU_PAGE       = 115,
+        SND_INV_SPIN        = 108,
+        SND_INV_HOME        = 109,
+        SND_INV_CONTROLS    = 110,
+        SND_INV_SHOW        = 111,
+        SND_INV_HIDE        = 112,
+        SND_INV_COMPASS     = 113,
+        SND_INV_WEAPON      = 114,
+        SND_INV_PAGE        = 115,
         SND_HEALTH          = 116,
         
         SND_DART            = 151,
@@ -987,6 +987,29 @@ namespace TR {
             int16 puzzleSet;
             int16 weapons[4];
             int16 braid;
+
+            struct {
+                int16 passport;
+                int16 passport_closed;
+                int16 map;
+                int16 compass;
+                int16 home;
+                int16 detail;
+                int16 sound;
+                int16 controls;
+                int16 gamma;
+
+                int16 weapon[4];
+                int16 ammo[4];
+                int16 medikit[2];
+                int16 puzzle[4];
+                int16 key[4];
+
+                int16 leadbar;
+                int16 scion;
+            } inv;
+
+            int16 glyphSeq;
         } extra;
 
         Level(Stream &stream, bool demo) {
@@ -1201,22 +1224,64 @@ namespace TR {
         // init secrets states
             memset(secrets, 0, MAX_SECRETS_COUNT * sizeof(secrets[0]));
         // get special models indices
-            memset(&extra, 0, sizeof(extra));
-            for (int i = 0; i < 4; i++)
-                extra.weapons[i] = -1;
-            extra.braid = -1;
+            memset(&extra, 0xFF, sizeof(extra));
 
             for (int i = 0; i < modelsCount; i++)
                 switch (models[i].type) {
-                    case Entity::MUZZLE_FLASH    : extra.muzzleFlash = i; break;
-                    case Entity::PUZZLE_DONE_1   : extra.puzzleSet   = i; break;
-                    case Entity::LARA_PISTOLS    : extra.weapons[0]  = i; break;
-                    case Entity::LARA_SHOTGUN    : extra.weapons[1]  = i; break;
-                    case Entity::LARA_MAGNUMS    : extra.weapons[2]  = i; break;
-                    case Entity::LARA_UZIS       : extra.weapons[3]  = i; break;
-                    case Entity::BRAID           : extra.braid       = i; break;
+                    case Entity::MUZZLE_FLASH        : extra.muzzleFlash     = i; break;
+                    case Entity::PUZZLE_DONE_1       : extra.puzzleSet       = i; break;
+                    case Entity::LARA_PISTOLS        : extra.weapons[0]      = i; break;
+                    case Entity::LARA_SHOTGUN        : extra.weapons[1]      = i; break;
+                    case Entity::LARA_MAGNUMS        : extra.weapons[2]      = i; break;
+                    case Entity::LARA_UZIS           : extra.weapons[3]      = i; break;
+                    case Entity::BRAID               : extra.braid           = i; break;
+
+                    case Entity::INV_PASSPORT        : extra.inv.passport    = i; break;
+                    case Entity::INV_PASSPORT_CLOSED : extra.inv.passport_closed = i; break;
+                    case Entity::INV_MAP             : extra.inv.map         = i; break;
+                    case Entity::INV_COMPASS         : extra.inv.compass     = i; break;
+                    case Entity::INV_HOME            : extra.inv.home        = i; break;
+                    case Entity::INV_DETAIL          : extra.inv.detail      = i; break;
+                    case Entity::INV_SOUND           : extra.inv.sound       = i; break;
+                    case Entity::INV_CONTROLS        : extra.inv.controls    = i; break;
+                    case Entity::INV_GAMMA           : extra.inv.gamma       = i; break;
+
+                    case Entity::INV_PISTOLS         : extra.inv.weapon[0]   = i; break;
+                    case Entity::INV_SHOTGUN         : extra.inv.weapon[1]   = i; break;
+                    case Entity::INV_MAGNUMS         : extra.inv.weapon[2]   = i; break;
+                    case Entity::INV_UZIS            : extra.inv.weapon[3]   = i; break;
+
+                    case Entity::INV_AMMO_PISTOLS    : extra.inv.ammo[0]     = i; break;
+                    case Entity::INV_AMMO_SHOTGUN    : extra.inv.ammo[1]     = i; break;
+                    case Entity::INV_AMMO_MAGNUMS    : extra.inv.ammo[2]     = i; break;
+                    case Entity::INV_AMMO_UZIS       : extra.inv.ammo[3]     = i; break;
+
+                    case Entity::INV_MEDIKIT_SMALL   : extra.inv.medikit[0]  = i; break;
+                    case Entity::INV_MEDIKIT_BIG     : extra.inv.medikit[1]  = i; break;
+
+                    case Entity::INV_PUZZLE_1        : extra.inv.puzzle[0]   = i; break;
+                    case Entity::INV_PUZZLE_2        : extra.inv.puzzle[1]   = i; break;
+                    case Entity::INV_PUZZLE_3        : extra.inv.puzzle[2]   = i; break;
+                    case Entity::INV_PUZZLE_4        : extra.inv.puzzle[3]   = i; break;
+
+                    case Entity::INV_KEY_1           : extra.inv.key[0]      = i; break;
+                    case Entity::INV_KEY_2           : extra.inv.key[1]      = i; break;
+                    case Entity::INV_KEY_3           : extra.inv.key[2]      = i; break;
+                    case Entity::INV_KEY_4           : extra.inv.key[3]      = i; break;
+                                                                         
+                    case Entity::INV_LEADBAR         : extra.inv.leadbar     = i; break;
+                    case Entity::INV_SCION           : extra.inv.scion       = i; break;
+
                     default : ;
                 }
+                
+            for (int i = 0; i < spriteSequencesCount; i++) 
+                if (spriteSequences[i].type == TR::Entity::GLYPH) {
+                    extra.glyphSeq = i;
+                    break;
+                }
+            ASSERT(extra.glyphSeq != -1);
+
         // init cutscene transform
             cutMatrix.identity();
             if (cutEntity > -1) {
@@ -1665,7 +1730,7 @@ namespace TR {
             return Color24(255, 0, 255);
         }
 
-        Stream* getSampleStream(int index) {
+        Stream* getSampleStream(int index) const {
             uint8 *data = &soundData[soundOffsets[index]];
             uint32 size = 0;
             switch (version) {
diff --git a/src/game.h b/src/game.h
index 76846c9..05b41c9 100644
--- a/src/game.h
+++ b/src/game.h
@@ -8,13 +8,11 @@
 
 namespace Game {
     Level *level;
-    UI    *ui;
 
     void startLevel(Stream *lvl, Stream *snd, bool demo, bool home) {
-        delete ui;
         delete level;
         level = new Level(*lvl, snd, demo, home);
-        ui    = new UI(level);
+        UI::init(level);
         delete lvl;
     }
 
@@ -27,7 +25,6 @@ namespace Game {
         Core::settings.water    = Core::support.texFloat || Core::support.texHalf;
 
         level = NULL;
-        ui    = NULL;
         startLevel(lvl, snd, false, false);
     }
 
@@ -40,12 +37,14 @@ namespace Game {
     }
 
     void free() {
-        delete ui;
         delete level;
         Core::free();
     }
 
     void updateTick() {
+        if (Input::state[cInventory])
+            level->inventory.toggle();
+
         float dt = Core::deltaTime;
         if (Input::down[ikR]) // slow motion (for animation debugging)
             Core::deltaTime /= 10.0f;
@@ -60,13 +59,15 @@ namespace Game {
     }
 
     void update(float delta) {
+        Input::update();
+
         if (Input::down[ikV]) { // third <-> first person view
             level->camera->changeView(!level->camera->firstPerson);
             Input::down[ikV] = false;
         }
 
         Core::deltaTime = delta = min(1.0f, delta);
-        ui->update();
+        UI::update();
 
         while (delta > EPS) {
             Core::deltaTime = min(delta, 1.0f / 30.0f);
@@ -79,7 +80,12 @@ namespace Game {
         PROFILE_TIMING(Core::stats.tFrame);
         Core::beginFrame();
         level->render();
-        ui->renderTouch();
+        UI::renderTouch();
+
+        #ifdef _DEBUG
+            level->renderDebug();
+        #endif
+
         Core::endFrame();
     }
 }
diff --git a/src/input.h b/src/input.h
index 1eddef2..a25e03e 100644
--- a/src/input.h
+++ b/src/input.h
@@ -5,7 +5,7 @@
 
 enum InputKey { ikNone,
     // keyboard
-        ikLeft, ikRight, ikUp, ikDown, ikSpace, ikEnter, ikEscape, ikShift, ikCtrl, ikAlt,
+        ikLeft, ikRight, ikUp, ikDown, ikSpace, ikTab, ikEnter, ikEscape, ikShift, ikCtrl, ikAlt,
         ik0, ik1, ik2, ik3, ik4, ik5, ik6, ik7, ik8, ik9,
         ikA, ikB, ikC, ikD, ikE, ikF, ikG, ikH, ikI, ikJ, ikK, ikL, ikM,
         ikN, ikO, ikP, ikQ, ikR, ikS, ikT, ikU, ikV, ikW, ikX, ikY, ikZ,
@@ -15,12 +15,55 @@ enum InputKey { ikNone,
         ikTouchA, ikTouchB, ikTouchC, ikTouchD, ikTouchE, ikTouchF,
     // gamepad
         ikJoyA, ikJoyB, ikJoyX, ikJoyY, ikJoyLB, ikJoyRB, ikJoySelect, ikJoyStart, ikJoyL, ikJoyR, ikJoyLT, ikJoyRT, ikJoyPOV,
+        ikJoyLeft, ikJoyRight, ikJoyUp, ikJoyDown,
         ikMAX };
 
+enum ControlKey { cLeft, cRight, cUp, cDown, cJump, cWalk, cAction, cWeapon, cLook, cStepLeft, cStepRight, cRoll, cInventory, cMAX };
+
 namespace Input {
 
     bool down[ikMAX];
 
+    struct KeySet {
+        InputKey key, joy;
+    };
+
+    static const KeySet presets[1][cMAX] = {
+        {   { ikLeft,   ikJoyLeft   },
+            { ikRight,  ikJoyRight  },
+            { ikUp,     ikJoyUp     },
+            { ikDown,   ikJoyDown   },
+            { ikAlt,    ikJoyX      },
+            { ikShift,  ikJoyRB     },
+            { ikCtrl,   ikJoyA      },
+            { ikSpace,  ikJoyY      },
+            { ikC,      ikJoyLB     },
+            { ikZ,      ikJoyLT     },
+            { ikX,      ikJoyRT     },
+            { ikA,      ikJoyB      },
+            { ikTab,    ikJoySelect },
+        },
+        /*
+        {   { ikA,      ikJoyLeft   },
+            { ikD,      ikJoyRight  },
+            { ikW,      ikJoyUp     },
+            { ikS,      ikJoyDown   },
+            { ikSpace,  ikJoyX      },
+            { ikShift,  ikJoyRB     },
+            { ikP,      ikJoyA      },
+            { ikMouseM, ikJoyY      },
+            { ikMouseR, ikJoyLB     },
+            { ikLeft,   ikJoyLT     },
+            { ikRight,  ikJoyRT     },
+            { ikUp,     ikJoyB      },
+            { ikTab,    ikJoySelect },
+        },
+        */
+    };
+
+    KeySet  controls[cMAX];
+    bool    state[cMAX];
+
     struct {
         vec2 pos;
         struct {
@@ -31,7 +74,7 @@ namespace Input {
     struct {
         vec2  L, R;
         float LT, RT;
-		int   POV;
+        int   POV;
     } joy;
 
     struct Touch {
@@ -68,13 +111,15 @@ namespace Input {
         }
     } head;
 
-    void reset() {
-        memset(down,    0, sizeof(down));
-        memset(&mouse,  0, sizeof(mouse));
-        memset(&joy,    0, sizeof(joy));
-        memset(&touch,  0, sizeof(touch));
-        head.reset();
-    }
+    enum TouchButton { bNone, bWeapon, bWalk, bAction, bJump, bMAX };
+    enum TouchZone   { zMove, zLook, zButton, zMAX };
+
+    float       touchTimerVis, touchTimerTap;
+    InputKey    touchKey[zMAX];
+    TouchButton btn;
+    vec2        btnPos[bMAX];
+    float       btnRadius;
+    bool        doubleTap;
 
     void setDown(InputKey key, bool value) {
         if (down[key] == value)
@@ -118,17 +163,158 @@ namespace Input {
     }
 
     InputKey getTouch(int id) {
-        for (int i = 0; i < COUNT(touch); i++) 
+        for (int i = 0; i < COUNT(touch); i++)
             if (down[ikTouchA + i] && touch[i].id == id)
                 return InputKey(ikTouchA + i);
 
-        for (int i = 0; i < COUNT(touch); i++) 
+        for (int i = 0; i < COUNT(touch); i++)
             if (!down[ikTouchA + i]) {
                 touch[i].id = id;
                 return InputKey(ikTouchA + i);
             }
 
-        return ikNone;        
+        return ikNone;
+    }
+
+    void reset() {
+        memset(down,    0, sizeof(down));
+        memset(&mouse,  0, sizeof(mouse));
+        memset(&joy,    0, sizeof(joy));
+        memset(&touch,  0, sizeof(touch));
+        head.reset();
+    }
+
+    void init() {
+        reset();
+        for (int i = 0; i < cMAX; i++)
+            controls[i] = presets[0][i];
+
+        touchTimerVis    = 0.0f;
+        touchTimerTap    = 0.0f;
+        doubleTap        = false;
+        touchKey[zMove]  = touchKey[zLook] = touchKey[zButton] = ikNone;
+    }
+
+    bool checkTouchZone(TouchZone zone) {
+        InputKey &t = touchKey[zone];
+        if (t != ikNone && !down[t]) {
+            t = ikNone;
+            return true;
+        }
+        return false;
+    }
+
+    void getTouchDir(InputKey key, vec2 &dir) {
+        vec2 delta = vec2(0.0f);
+        if (key == ikNone)
+            return;
+
+        Touch &t = touch[key - ikTouchA];
+        vec2 d = t.pos - t.start;                
+        float len = d.length();
+        if (len > EPS)
+            delta = d * (min(len / 100.0f, 1.0f) / len);
+
+        dir = delta;
+    }
+
+    void update() {
+        int p = joy.POV;
+        setDown(ikJoyUp,    p == 8 || p == 1 || p == 2);
+        setDown(ikJoyRight, p == 2 || p == 3 || p == 4);
+        setDown(ikJoyDown,  p == 4 || p == 5 || p == 6);
+        setDown(ikJoyLeft,  p == 6 || p == 7 || p == 8);
+
+        for (int i = 0; i < cMAX; i++) {
+            KeySet &c = controls[i];
+            state[i] = (c.key != ikNone && down[c.key]) || (c.joy != ikNone && down[c.joy]);
+        }
+
+    // update touch controls
+        if (touchTimerTap > 0.0f)
+            touchTimerTap = max(0.0f, touchTimerTap - Core::deltaTime);
+
+        if (touchKey[zMove] != ikNone || touchKey[zLook] != ikNone || touchKey[zButton] != ikNone)
+            touchTimerVis = 30.0f;
+        else
+            if (touchTimerVis > 0.0f)
+                touchTimerVis = max(0.0f, touchTimerVis - Core::deltaTime);
+
+    // update buttons
+        float offset = Core::height * 0.25f;
+        float radius = offset; 
+        vec2  center = vec2(Core::width - offset * 0.7f, Core::height - offset * 0.7f);
+
+        btnPos[bWeapon] = center;
+        btnPos[bJump]   = center + vec2(cos(-PI * 0.5f), sin(-PI * 0.5f)) * radius;
+        btnPos[bAction] = center + vec2(cos(-PI * 3.0f / 4.0f), sin(-PI * 3.0f / 4.0f)) * radius;
+        btnPos[bWalk]   = center + vec2(cos(-PI), sin(-PI)) * radius;
+        btnRadius       = Core::height * (25.0f / 1080.0f);
+
+    // touch update
+        if (checkTouchZone(zMove))
+            joy.L = vec2(0.0f);
+
+        if (checkTouchZone(zLook))
+            joy.R = vec2(0.0f);
+
+        if (checkTouchZone(zButton))
+            btn = bNone;
+
+        if (doubleTap)
+            doubleTap = false;
+
+        float zoneSize = Core::width / 3.0f;
+
+        for (int i = 0; i < COUNT(touch); i++) {
+            InputKey key = InputKey(i + ikTouchA);
+
+            if (!down[key]) continue;
+            if (key == touchKey[zMove] || key == touchKey[zLook] || key == touchKey[zButton]) continue;
+
+            int zone = clamp(int(touch[i].pos.x / zoneSize), 0, 2);
+            InputKey &t = touchKey[zone];
+
+            if (t == ikNone) {
+                t = key;
+                if (zone == zMove) {
+                    if (touchTimerTap > 0.0f && touchTimerTap < 0.3f) { // 100 ms gap to reduce false positives (bad touch sensors)
+                        doubleTap = true;
+                        touchTimerTap = 0.0f;
+                    } else
+                        touchTimerTap = 0.3f;
+                }
+            }
+        }
+
+    // set active touches as gamepad controls
+        getTouchDir(touchKey[zMove], joy.L);
+        getTouchDir(touchKey[zLook], joy.R);
+
+        if (touchKey[zButton] != ikNone) {
+            vec2 pos = touch[touchKey[zButton] - ikTouchA].pos;
+
+            btn = bMAX;
+            float minDist = btnRadius * 8.0f;
+            for (int i = 0; i < bMAX; i++) {
+                float d = (pos - btnPos[i]).length();
+                if (d < minDist) {
+                    minDist = d;
+                    btn = TouchButton(i);
+                }
+            }
+
+            switch (btn) {
+                case bWeapon : state[cWeapon] = true; break;
+                case bWalk   : state[cWalk]   = true; break;
+                case bAction : state[cAction] = true; break;
+                case bJump   : state[cJump]   = true; break;
+                default      : ;
+            }
+        }
+
+        if (doubleTap)
+            state[cRoll] = true;
     }
 }
 
diff --git a/src/inventory.h b/src/inventory.h
index 10fc2b6..99e3746 100644
--- a/src/inventory.h
+++ b/src/inventory.h
@@ -2,18 +2,175 @@
 #define H_INVENTORY
 
 #include "format.h"
+#include "controller.h"
+#include "ui.h"
 
-#define MAX_ITEMS 64
+#define INVENTORY_MAX_ITEMS  64
+#define INVENTORY_MAX_RADIUS 688.0f
+#define INVENTORY_BG_SIZE    512
+#define INVENTORY_HEIGHT     2048.0f
 
 struct Inventory {
 
+    enum Page {
+        PAGE_OPTION,
+        PAGE_INVENTORY,
+        PAGE_ITEMS,
+        PAGE_MAX
+    };
+
+    IGame   *game;
+    Texture *background[3];
+
+    bool    active;
+    bool    chosen;
+    float   phaseRing, phasePage, phaseChoose, phaseSelect;
+    int     index, targetIndex, pageItemIndex[PAGE_MAX];
+    Page    page, targetPage;
+    int     itemsCount;
+
     struct Item {
         TR::Entity::Type    type;
         int                 count;
-    } items[MAX_ITEMS];
-    int itemsCount;
+        float               angle;
+        Animation           *anim;
 
-    Inventory() : itemsCount(0) {}
+        struct Desc {
+            const char *name;
+            int         page;
+            int         model;
+        } desc;
+
+        Item() : anim(NULL) {}
+
+        Item(TR::Level *level, TR::Entity::Type type, int count = 1) : type(type), count(count), angle(0.0f) {
+            switch (type) {
+                case TR::Entity::INV_PASSPORT        : desc = { "Game",            0, level->extra.inv.passport        }; break;
+                case TR::Entity::INV_PASSPORT_CLOSED : desc = { "Game",            0, level->extra.inv.passport_closed }; break;
+                case TR::Entity::INV_MAP             : desc = { "Map",             1, level->extra.inv.map             }; break;
+                case TR::Entity::INV_COMPASS         : desc = { "Compass",         1, level->extra.inv.compass         }; break;
+                case TR::Entity::INV_HOME            : desc = { "Lara's Home",     0, level->extra.inv.home            }; break;
+                case TR::Entity::INV_DETAIL          : desc = { "Detail Levels",   0, level->extra.inv.detail          }; break;
+                case TR::Entity::INV_SOUND           : desc = { "Sound",           0, level->extra.inv.sound           }; break;
+                case TR::Entity::INV_CONTROLS        : desc = { "Controls",        0, level->extra.inv.controls        }; break;
+                case TR::Entity::INV_GAMMA           : desc = { "Gamma",           0, level->extra.inv.gamma           }; break;
+                                                                                   
+                case TR::Entity::INV_PISTOLS         : desc = { "Pistols",         1, level->extra.inv.weapon[0]       }; break;
+                case TR::Entity::INV_SHOTGUN         : desc = { "Shotgun",         1, level->extra.inv.weapon[1]       }; break;
+                case TR::Entity::INV_MAGNUMS         : desc = { "Magnums",         1, level->extra.inv.weapon[2]       }; break;
+                case TR::Entity::INV_UZIS            : desc = { "Uzis",            1, level->extra.inv.weapon[3]       }; break;
+                                                                                   
+                case TR::Entity::INV_AMMO_PISTOLS    : desc = { "Pistol Clips",    1, level->extra.inv.ammo[0]         }; break;
+                case TR::Entity::INV_AMMO_SHOTGUN    : desc = { "Shotgun Shells",  1, level->extra.inv.ammo[1]         }; break;
+                case TR::Entity::INV_AMMO_MAGNUMS    : desc = { "Magnum Clips",    1, level->extra.inv.ammo[2]         }; break;
+                case TR::Entity::INV_AMMO_UZIS       : desc = { "Uzi Clips",       1, level->extra.inv.ammo[3]         }; break;
+
+                case TR::Entity::INV_MEDIKIT_SMALL   : desc = { "Small Medi Pack", 1, level->extra.inv.medikit[0]      }; break;
+                case TR::Entity::INV_MEDIKIT_BIG     : desc = { "Large Medi Pack", 1, level->extra.inv.medikit[1]      }; break;
+
+                case TR::Entity::INV_PUZZLE_1        : desc = { "Puzzle",          2, level->extra.inv.puzzle[0]       }; break;
+                case TR::Entity::INV_PUZZLE_2        : desc = { "Puzzle",          2, level->extra.inv.puzzle[1]       }; break;
+                case TR::Entity::INV_PUZZLE_3        : desc = { "Puzzle",          2, level->extra.inv.puzzle[2]       }; break;
+                case TR::Entity::INV_PUZZLE_4        : desc = { "Puzzle",          2, level->extra.inv.puzzle[3]       }; break;
+
+                case TR::Entity::INV_KEY_1           : desc = { "Key",             2, level->extra.inv.key[0]          }; break;
+                case TR::Entity::INV_KEY_2           : desc = { "Key",             2, level->extra.inv.key[1]          }; break;
+                case TR::Entity::INV_KEY_3           : desc = { "Key",             2, level->extra.inv.key[2]          }; break;
+                case TR::Entity::INV_KEY_4           : desc = { "Key",             2, level->extra.inv.key[3]          }; break;
+
+                case TR::Entity::INV_LEADBAR         : desc = { "Lead Bar",        2, level->extra.inv.leadbar         }; break;
+                case TR::Entity::INV_SCION           : desc = { "Scion",           2, level->extra.inv.scion           }; break;
+                default                              : desc = { "unknown",         2, -1                               }; break;
+            }
+
+            if (desc.model > -1) {
+                anim = new Animation(level, &level->models[desc.model]);
+                anim->isEnded = true;
+            } else
+                anim = NULL;
+        }
+
+        ~Item() {
+            delete anim;
+        }
+
+        Item& operator = (Item &item) {
+            memcpy(this, &item, sizeof(item));
+            item.anim = NULL;
+            return *this;
+        }
+
+        void reset() {
+            if (anim) {
+                anim->setAnim(0, 0, false);
+                anim->isEnded = true;
+            }
+        }
+
+        void update() {
+            if (anim) anim->update();
+        }
+
+        void render(IGame *game, const Basis &basis) {
+            if (!anim) return;
+
+            TR::Level *level = game->getLevel();
+            TR::Model &m     = level->models[desc.model];
+            Basis joints[34];
+
+            anim->getJoints(basis, -1, true, joints);
+
+            Core::active.shader->setParam(uBasis, joints[0], m.mCount);
+
+            game->getMesh()->renderModel(desc.model);
+        }
+
+        void choose() {
+            if (anim) anim->setAnim(0, 0, false);
+        }
+
+    } items[INVENTORY_MAX_ITEMS];
+
+    Inventory(IGame *game) : game(game), active(false), chosen(false), index(0), targetIndex(0), page(PAGE_OPTION), targetPage(PAGE_OPTION), itemsCount(0) {
+        TR::Level *level = game->getLevel();
+
+        add(TR::Entity::INV_PASSPORT);
+        add(TR::Entity::INV_DETAIL);
+        add(TR::Entity::INV_SOUND);
+        add(TR::Entity::INV_CONTROLS);
+        add(TR::Entity::INV_COMPASS);
+
+        if (level->extra.inv.map)
+            add(TR::Entity::INV_MAP);
+        if (level->extra.inv.gamma)
+            add(TR::Entity::INV_GAMMA);
+        
+        add(TR::Entity::INV_PISTOLS, 999);
+        add(TR::Entity::INV_SHOTGUN, 999);
+        add(TR::Entity::INV_MAGNUMS, 999);
+        add(TR::Entity::INV_UZIS, 999);
+        add(TR::Entity::INV_MEDIKIT_SMALL, 999);
+        add(TR::Entity::INV_MEDIKIT_BIG, 999);
+
+        add(TR::Entity::INV_SCION, 1);
+        add(TR::Entity::INV_KEY_1, 1);
+        add(TR::Entity::INV_PUZZLE_1, 1);
+
+        phaseRing = phasePage = phaseChoose = phaseSelect = 0.0f;
+        memset(pageItemIndex, 0, sizeof(pageItemIndex));
+
+        for (int i = 0; i < COUNT(background); i++)
+            background[i] = new Texture(INVENTORY_BG_SIZE, INVENTORY_BG_SIZE, Texture::RGBA, false);
+    }
+
+    ~Inventory() {
+        for (int i = 0; i < COUNT(background); i++)
+            delete background[i];
+    }
+
+    bool isActive() {
+        return active || phaseRing > 0.0f;
+    }
 
     int contains(TR::Entity::Type type) {
         for (int i = 0; i < itemsCount; i++)
@@ -29,11 +186,21 @@ struct Inventory {
             return;
         }
 
-        if(itemsCount < MAX_ITEMS) {
-            items[itemsCount].type  = type;
-            items[itemsCount].count = count;
-            itemsCount++;
+        ASSERT(itemsCount < INVENTORY_MAX_ITEMS);
+
+        int pos = 0;
+        for (int pos = 0; pos < itemsCount; pos++)
+            if (items[pos].type > type)
+                break;
+
+        if (pos - itemsCount) {
+            for (int i = itemsCount; i > pos; i--)
+                items[i] = items[i - 1];
         }
+
+        Item it(game->getLevel(), type, count);
+        items[pos] = it;
+        itemsCount++;
     }
 
     int getCount(TR::Entity::Type type) {
@@ -47,6 +214,364 @@ struct Inventory {
         if (i > -1)
             items[i].count -= count;
     }
+
+    bool use(TR::Entity::Type item, TR::Entity::Type slot) {
+        if (item == TR::Entity::NONE) {
+            switch (slot) {
+                case TR::Entity::KEY_HOLE_1    : item = TR::Entity::KEY_1;    break;      // TODO: 1-4
+                case TR::Entity::PUZZLE_HOLE_1 : item = TR::Entity::PUZZLE_1; break;
+                default : return false;
+            }
+        }
+
+        if (getCount(item) > 0) {
+            remove(item);
+            return true;
+        }
+        return false;
+    }
+
+    bool toggle(Page curPage = PAGE_INVENTORY) {
+        if (phaseRing == 0.0f || phaseRing == 1.0f) {
+            active = !active;
+            vec3 p;
+            game->playSound(active ? TR::SND_INV_SHOW : TR::SND_INV_HIDE, p, 0, 0);
+            chosen = false;
+
+            if (active) {
+                for (int i = 0; i < itemsCount; i++)
+                    items[i].reset();
+
+                phasePage   = 1.0f;
+                phaseSelect = 1.0f;
+                page      = targetPage  = curPage;
+                index     = targetIndex = pageItemIndex[page];
+            }
+        }
+        return active;
+    }
+
+    void doPhase(bool increase, float speed, float &value) {
+        if (increase) {
+            if (value < 1.0f) {
+                value += Core::deltaTime * speed;
+                if (value > 1.0f)
+                    value = 1.0f;
+            }
+        } else {
+            if (value > 0.0f) {
+                value -= Core::deltaTime * speed;
+                if (value < 0.0f)
+                    value = 0.0f;
+            }
+        }
+    }
+
+    int getItemIndex(Page page, int index) {
+        for (int i = 0; i < itemsCount; i++)
+            if (items[i].desc.page == page) {
+                if (!index)
+                    return i;
+                index--;
+            }
+        return 0;
+    }
+
+    void update() {
+        doPhase(active, 2.0f, phaseRing);
+        doPhase(true,   1.6f, phasePage);
+        doPhase(chosen, 4.0f, phaseChoose);
+        doPhase(true,   2.5f, phaseSelect);
+
+        if (page != targetPage && phasePage == 1.0f) {
+            page  = targetPage;
+            index = targetIndex = pageItemIndex[page];
+        }
+
+        if (index != targetIndex && phaseSelect == 1.0f)
+            index = pageItemIndex[page] = targetIndex;
+
+        int count = getItemsCount(page);
+
+        bool ready = active && phaseRing == 1.0f && phasePage == 1.0f;
+
+        if (index == targetIndex && targetPage == page && ready && !chosen) {
+            if (Input::state[cLeft])  { phaseSelect = 0.0f; targetIndex = (targetIndex - 1 + count) % count; }
+            if (Input::state[cRight]) { phaseSelect = 0.0f; targetIndex = (targetIndex + 1) % count;         }
+            if (Input::state[cUp]   && page < PAGE_ITEMS  && getItemsCount(page + 1)) { phasePage = 0.0f; targetPage = Page(page + 1); }
+            if (Input::state[cDown] && page > PAGE_OPTION && getItemsCount(page - 1)) { phasePage = 0.0f; targetPage = Page(page - 1); }
+
+            if (index != targetIndex) {
+                vec3 p;
+                game->playSound(TR::SND_INV_SPIN, p, 0, 0);
+            }
+        }
+
+        vec3 p;
+        
+        Item &item = items[getItemIndex(page, index)];
+
+        if (index == targetIndex && ready) {
+            if (Input::state[cAction] && (phaseChoose == 0.0f || (phaseChoose == 1.0f && item.anim->isEnded))) {
+                chosen = !chosen;
+                if (!chosen) {
+                    item.angle = 0.0f;
+                } else {
+                    switch (item.type) {
+                        case TR::Entity::INV_COMPASS  : game->playSound(TR::SND_INV_COMPASS, p, 0, 0);   break;
+                        case TR::Entity::INV_HOME     : game->playSound(TR::SND_INV_HOME, p, 0, 0);      break;
+                        case TR::Entity::INV_CONTROLS : game->playSound(TR::SND_INV_CONTROLS, p, 0, 0);  break;
+                        case TR::Entity::INV_PISTOLS  :
+                        case TR::Entity::INV_SHOTGUN  :
+                        case TR::Entity::INV_MAGNUMS  :
+                        case TR::Entity::INV_UZIS     : game->playSound(TR::SND_INV_WEAPON, p, 0, 0);    break;
+                        default                       : game->playSound(TR::SND_INV_SHOW, p, 0, 0);      break;
+                    }
+                    item.choose();
+                }
+            }
+        }
+
+        float w = 90.0f * DEG2RAD * Core::deltaTime;
+
+        int itemIndex = getItemIndex(page, index);
+
+        for (int i = 0; i < itemsCount; i++) {
+            items[i].update();
+            float &angle = items[i].angle;
+
+            if (itemIndex != i || chosen) {
+                if (angle == 0.0f) {
+                    continue;
+                } else if (angle < 0.0f) {
+                    angle += w;
+                    if (angle > 0.0f)
+                        angle = 0.0f;
+                } else if (angle > 0.0f) {
+                    angle -= w;
+                    if (angle < 0.0f)
+                        angle = 0.0f;
+                }
+            } else
+                angle += w;
+
+            angle = clampAngle(angle);
+        }
+
+        if (ready && chosen && phaseChoose == 1.0f && item.anim->isEnded) {
+            TR::Entity::Type type = item.type;
+            
+            if (type == TR::Entity::INV_PISTOLS || type == TR::Entity::INV_SHOTGUN || type == TR::Entity::INV_MAGNUMS || type == TR::Entity::INV_UZIS ||
+                type == TR::Entity::INV_MEDIKIT_SMALL || type == TR::Entity::INV_MEDIKIT_BIG) {
+
+                game->invUse(type, TR::Entity::NONE);
+                toggle();
+            }
+
+        }
+    }
+
+    void prepareBackground() {
+        Core::setDepthTest(false);
+
+        // vertical blur
+        Core::setTarget(background[1], true);
+        game->setShader(Core::passFilter, Shader::FILTER_BLUR, false, false);
+        Core::active.shader->setParam(uParam, vec4(0, 1, 1.0f / INVENTORY_BG_SIZE, 0));;
+        background[0]->bind(sDiffuse);
+        game->getMesh()->renderQuad();
+
+        // horizontal blur
+        Core::setTarget(background[2], true);
+        game->setShader(Core::passFilter, Shader::FILTER_BLUR, false, false);
+        Core::active.shader->setParam(uParam, vec4(1, 0, 1.0f / INVENTORY_BG_SIZE, 0));;
+        background[1]->bind(sDiffuse);
+        game->getMesh()->renderQuad();
+
+        // grayscale
+        Core::setTarget(background[1], true);
+        game->setShader(Core::passFilter, Shader::FILTER_GRAYSCALE, false, false);
+        Core::active.shader->setParam(uParam, vec4(1, 0, 0, 0));;
+        background[2]->bind(sDiffuse);
+        game->getMesh()->renderQuad();
+
+        Core::setTarget(NULL, true);
+
+        Core::setDepthTest(true);
+    }
+
+    void renderItemText(const Item &item, float width) {
+        UI::textOut(game, vec2(0, 480 - 16), item.desc.name, UI::aCenter, width);
+
+        if (item.count > 1) {
+            char spec;
+            switch (item.type) {
+                case TR::Entity::INV_SHOTGUN : spec = 12; break;
+                case TR::Entity::INV_MAGNUMS : spec = 13; break;
+                case TR::Entity::INV_UZIS    : spec = 14; break;
+                default                      : spec = 0;
+            }
+
+            char buf[16];
+            sprintf(buf, "%d %c", item.count, spec);
+            for (int i = 0; buf[i] != ' '; i++)
+                buf[i] -= 47;
+            UI::textOut(game, vec2(width / 2 - 160, 480 - 96), buf, UI::aRight, 320);
+        }
+    }
+
+    float getAngle(int index, int count) {
+        return PI * 2.0f / float(count) * index;
+    }
+
+    int getItemsCount(int page) {
+        int count = 0;
+
+        for (int i = 0; i < itemsCount; i++)
+            if (items[i].desc.page == page)
+                count++;
+
+        return count;
+    }
+
+    void renderPage(int page) {
+        float phase = page == targetPage ? phasePage : (1.0f - phasePage);
+
+        float alpha = 1.0f - phaseRing * phase;
+        alpha *= alpha;
+        alpha = 1.0f - alpha;
+        Core::active.shader->setParam(uMaterial, vec4(1.0f, 0.4f, 0.0f, alpha));
+
+        int count = getItemsCount(page);
+
+        vec2 cpos(1286, 256 + 1280 * (1.0f - phaseRing));
+        float ringTilt      = cpos.angle();
+        float radius        = phaseRing * INVENTORY_MAX_RADIUS * phase;
+        float collapseAngle = phaseRing * phase * PI - PI;
+        float ringHeight    = lerp(float(this->page), float(targetPage), hermite(phasePage)) * INVENTORY_HEIGHT;
+        float angle         = getAngle(pageItemIndex[page], count);
+
+        if (phaseSelect < 1.0f)
+            angle = lerpAngle(angle, getAngle(targetIndex, count), hermite(phaseSelect));
+        
+        int itemIndex = 0;
+        for (int i = 0; i < itemsCount; i++) {
+            Item &item = items[i];
+
+            if (item.desc.page != page)
+                continue;
+
+            float a  = getAngle(itemIndex, count) - angle - collapseAngle;
+            float ia = item.angle;
+            float ra = ringTilt;
+            float rd = radius;
+
+            if (itemIndex == pageItemIndex[page] && (chosen || phaseChoose > 0.0f)) {
+                ia *= 1.0f - phaseChoose;
+                ra *= 1.0f - phaseChoose;
+                rd +=  296 * phaseChoose;
+            }
+
+            Basis basis = Basis(quat(vec3(1, 0, 0), ra), vec3(0.0f));
+            basis = basis * Basis(quat(vec3(0, 1, 0), PI + ia - a), vec3(sinf(a), 0, -cosf(a)) * rd - vec3(0, item.desc.page * INVENTORY_HEIGHT - ringHeight, 0));
+
+            item.render(game, basis);
+
+            itemIndex++;
+        }
+    }
+
+    void render() {
+    // background
+        Core::setDepthTest(false);
+
+        game->setShader(Core::passFilter, Shader::FILTER_MIXER, false, false);
+        Core::active.shader->setParam(uParam, vec4(phaseRing, 1.0f - phaseRing * 0.4f, 0, 0));;
+        background[0]->bind(sDiffuse);  // orignal image
+        background[1]->bind(sNormal);   // blured grayscale image
+        game->getMesh()->renderQuad();
+
+        Core::setDepthTest(true);
+        Core::setBlending(bmAlpha);
+
+    // items
+        game->setupBinding();
+
+        Core::mLightProj.identity();
+
+        Core::mView.identity();
+        Core::mView.translate(vec3(0, 0, -1286));   // y = -96 in title 
+
+        Core::mView.up  *= -1.0f;
+        Core::mView.dir *= -1.0f;
+        Core::mViewInv = Core::mView.inverse();
+
+        float aspect = float(Core::width) / float(Core::height);
+
+        Core::mProj     = mat4(70.0f, aspect, 32.0f, 2048.0f);
+        Core::mViewProj = Core::mProj * Core::mView;
+        Core::viewPos   = Core::mViewInv.getPos();
+
+        Core::whiteTex->bind(sShadow);
+        game->setShader(Core::passCompose, Shader::ENTITY, false, false);
+
+        vec3 ambient[6] = {
+            vec3(0.4f), vec3(0.2f), vec3(0.4f), vec3(0.5f), vec3(0.4f), vec3(0.6f)
+        };
+
+        Core::lightPos[0]   = vec3(1000, 2000, 1000);
+        Core::lightColor[0] = vec4(1, 1, 1, 8192);
+        for (int i = 1; i < MAX_LIGHTS; i++)
+            Core::lightColor[1] = vec4(0, 0, 0, 1);
+        
+        Core::active.shader->setParam(uLightPos,   Core::lightPos[0],   MAX_LIGHTS);
+        Core::active.shader->setParam(uLightColor, Core::lightColor[0], MAX_LIGHTS);
+        Core::active.shader->setParam(uAmbient,    ambient[0], 6);
+
+        renderPage(page);
+        if (page != targetPage)
+            renderPage(targetPage);
+
+        if (phaseRing < 1.0f)
+            return;
+
+        Core::setDepthTest(false);
+        Core::setBlending(bmAlpha);
+        Core::setCulling(cfNone);
+        game->setupBinding();
+
+        float w = 480 * aspect;
+        Core::mViewProj = mat4(0.0f, w, 480, 0.0f, 0.0f, 1.0f);
+
+        game->setShader(Core::passGUI, Shader::DEFAULT);
+        Core::active.shader->setParam(uMaterial, vec4(1.0f));
+        Core::active.shader->setParam(uPosScale, vec4(0.0f, 0.0f, 1.0f, 1.0f));
+
+        UI::textBegin();
+
+        static const char* pageTitle[PAGE_MAX] = { "OPTION", "INVENTORY", "ITEMS" };
+
+        UI::textOut(game, vec2( 0, 32), pageTitle[page], UI::aCenter, w);
+
+        if (page < PAGE_ITEMS && getItemsCount(page + 1)) {
+            UI::textOut(game, vec2(16, 32), "\x5B", UI::aLeft, w);
+            UI::textOut(game, vec2( 0, 32), "\x5B", UI::aRight, w - 20);
+        }
+
+        if (page > PAGE_OPTION && getItemsCount(page - 1)) {
+            UI::textOut(game, vec2(16, 480 - 16), "\x5D", UI::aLeft, w);
+            UI::textOut(game, vec2(0,  480 - 16), "\x5D", UI::aRight, w - 20);
+        }
+
+        if (index == targetIndex)
+            renderItemText(items[getItemIndex(page, index)], w);
+
+        UI::textEnd(game);
+
+        Core::setCulling(cfFront);
+        Core::setBlending(bmNone);
+        Core::setDepthTest(true);
+    }
 };
 
 #endif
\ No newline at end of file
diff --git a/src/lara.h b/src/lara.h
index f9b11fb..efe94e2 100644
--- a/src/lara.h
+++ b/src/lara.h
@@ -6,7 +6,6 @@
 #include "character.h"
 #include "trigger.h"
 #include "sprite.h"
-#include "inventory.h"
 
 #define TURN_FAST           PI
 #define TURN_FAST_BACK      PI * 3.0f / 4.0f
@@ -21,6 +20,8 @@
 #define LARA_TILT_SPEED     (DEG2RAD * 37.5f)
 #define LARA_TILT_MAX       (DEG2RAD * 10.0f)
 
+#define LARA_MAX_HEALTH     1000
+
 #define LARA_HANG_OFFSET    724
 #define LARA_HEIGHT         762
 #define LARA_HEIGHT_WATER   400
@@ -213,7 +214,6 @@ struct Lara : Character {
 
     ActionCommand actionList[MAX_TRIGGER_ACTIONS];
 
-    Inventory inventory;
     int lastPickUp;
     int viewTarget;
     int roomPrev; // water out from room
@@ -384,7 +384,7 @@ struct Lara : Character {
 
     } *braid;
 
-    Lara(IGame *game, int entity, bool home) : Character(game, entity, 1000), home(home), wpnCurrent(Weapon::EMPTY), wpnNext(Weapon::EMPTY), chestOffset(pos), viewTarget(-1), braid(NULL) {
+    Lara(IGame *game, int entity, bool home) : Character(game, entity, LARA_MAX_HEALTH), home(home), wpnCurrent(Weapon::EMPTY), wpnNext(Weapon::EMPTY), chestOffset(pos), viewTarget(-1), braid(NULL) {
 
         if (getEntity().type == TR::Entity::LARA) {
             if (getRoom().flags.water)
@@ -399,7 +399,11 @@ struct Lara : Character {
         getEntity().flags.active = 1;
         initMeshOverrides();
 
-        memset(weapons, -1, sizeof(weapons));
+        weapons[Weapon::PISTOLS].ammo = -1;
+        weapons[Weapon::SHOTGUN].ammo = -1;
+        weapons[Weapon::MAGNUMS].ammo = -1;
+        weapons[Weapon::UZIS   ].ammo = -1;
+
         if (!home) {
             weapons[Weapon::PISTOLS].ammo = 0;
             weapons[Weapon::SHOTGUN].ammo = 9000;
@@ -666,7 +670,11 @@ struct Lara : Character {
     }
 
     void wpnChange(Weapon::Type wType) {
-        if (wpnCurrent == wType || home) return;
+        if (wpnCurrent == wType || home) {
+            if (emptyHands())
+                wpnDraw();
+            return;
+        }
         wpnNext = wType;
         wpnHide();
     }
@@ -803,11 +811,6 @@ struct Lara : Character {
         updateTargets();
         updateOverrides();
 
-        if (Input::down[ik1]) wpnChange(Weapon::PISTOLS);
-        if (Input::down[ik2]) wpnChange(Weapon::SHOTGUN);
-        if (Input::down[ik3]) wpnChange(Weapon::MAGNUMS);
-        if (Input::down[ik4]) wpnChange(Weapon::UZIS);
-
         if (wpnNext != Weapon::EMPTY && emptyHands()) {
             wpnSet(wpnNext);
             wpnDraw();
@@ -1233,6 +1236,21 @@ struct Lara : Character {
             Core::lightColor[1 + 0] = Core::lightColor[1 + 1] = vec4(0, 0, 0, 1);
     };
 
+    void useItem(TR::Entity::Type item) {
+        switch (item) {
+            case TR::Entity::INV_PISTOLS       : wpnChange(Lara::Weapon::PISTOLS); break;
+            case TR::Entity::INV_SHOTGUN       : wpnChange(Lara::Weapon::SHOTGUN); break;
+            case TR::Entity::INV_MAGNUMS       : wpnChange(Lara::Weapon::MAGNUMS); break;
+            case TR::Entity::INV_UZIS          : wpnChange(Lara::Weapon::UZIS);    break;
+            case TR::Entity::INV_MEDIKIT_SMALL :
+            case TR::Entity::INV_MEDIKIT_BIG   :
+                health = min(LARA_MAX_HEALTH, health + (item == TR::Entity::INV_MEDIKIT_SMALL ? LARA_MAX_HEALTH / 2 : LARA_MAX_HEALTH));
+                playSound(TR::SND_HEALTH, pos, Sound::PAN);
+                break;
+            default : ;
+        }
+    }
+
     bool waterOut() {
         // TODO: playSound 36
         if (collision.side != Collision::FRONT || pos.y - collision.info[Collision::FRONT].floor > 256 + 128)
@@ -1298,22 +1316,6 @@ struct Lara : Character {
         return false;
     }
 
-    bool useItem(TR::Entity::Type item, TR::Entity::Type slot) {
-        if (item == TR::Entity::NONE) {
-            switch (slot) {
-                case TR::Entity::KEY_HOLE_1    : item = TR::Entity::KEY_1;    break;      // TODO: 1-4
-                case TR::Entity::PUZZLE_HOLE_1 : item = TR::Entity::PUZZLE_1; break;
-                default : return false;
-            }
-        }
-
-        if (inventory.getCount(item) > 0) {
-            inventory.remove(item);
-            return true;
-        }
-        return false;
-    }
-
     void alignByItem(Controller *item, const TR::Limits::Limit &limit, bool dx, bool ay) {
         if (ay)
             angle = item->angle;
@@ -1390,7 +1392,7 @@ struct Lara : Character {
                 limit = actionState == STATE_USE_KEY ? &TR::Limits::KEY_HOLE : &TR::Limits::PUZZLE_HOLE;
                 if (!checkInteraction((Controller*)level->entities[info.trigCmd[0].args].controller, *limit, isPressed(ACTION)))
                     return;                
-                if (!useItem(TR::Entity::NONE, level->entities[info.trigCmd[0].args].type)) {
+                if (!game->invUse(TR::Entity::NONE, level->entities[info.trigCmd[0].args].type)) {
                     playSound(TR::SND_NO, pos, Sound::PAN);
                     return;
                 }
@@ -1884,32 +1886,21 @@ struct Lara : Character {
         input = Character::getInput();
         if (input & DEATH) return input;
 
-        int &p = Input::joy.POV;
-
-    #ifndef LEVEL_EDITOR
-        if (Input::down[ikW]) input |= FORTH;
-        if (Input::down[ikD]) input |= RIGHT;
-        if (Input::down[ikS]) input |= BACK;
-        if (Input::down[ikA]) input |= LEFT;
-    #endif
-
-        if (Input::down[ikUp]    || p == 8 || p == 1 || p == 2)             input |= FORTH;
-        if (Input::down[ikRight] || p == 2 || p == 3 || p == 4)             input |= RIGHT;
-        if (Input::down[ikDown]  || p == 4 || p == 5 || p == 6)             input |= BACK;
-        if (Input::down[ikLeft]  || p == 6 || p == 7 || p == 8)             input |= LEFT;
-        if (Input::down[ikJoyB])                                            input  = FORTH | BACK; // roll
-        if (Input::down[ikJoyRT] || Input::down[ikX])                       input  = WALK | RIGHT; // step right
-        if (Input::down[ikJoyLT] || Input::down[ikZ])                       input  = WALK | LEFT;  // step left
-        if (Input::down[ikSpace] || Input::down[ikJoyX])                    input |= JUMP;
-        if (Input::down[ikShift] || Input::down[ikJoyLB])                   input |= WALK;
-        if (Input::down[ikE] || Input::down[ikCtrl] || Input::down[ikJoyA]) input |= ACTION;
-        if (Input::down[ikQ] || Input::down[ikAlt]  || Input::down[ikJoyY]) input |= WEAPON;
+        if (Input::state[cUp])        input |= FORTH;
+        if (Input::state[cRight])     input |= RIGHT;
+        if (Input::state[cDown])      input |= BACK;
+        if (Input::state[cLeft])      input |= LEFT;
+        if (Input::state[cRoll])      input  = FORTH | BACK;
+        if (Input::state[cStepRight]) input  = WALK  | RIGHT;
+        if (Input::state[cStepLeft])  input  = WALK  | LEFT;
+        if (Input::state[cJump])      input |= JUMP;
+        if (Input::state[cWalk])      input |= WALK;
+        if (Input::state[cAction])    input |= ACTION;
+        if (Input::state[cWeapon])    input |= WEAPON;
 
     // analog control
         rotFactor = vec2(1.0f);
 
-        if (Input::down[ikJoyL]) input = FORTH | BACK;
-
         if ((state == STATE_STOP || state == STATE_SURF_TREAD || state == STATE_HANG) && fabsf(Input::joy.L.x) < 0.5f && fabsf(Input::joy.L.y) < 0.5f)
             return input;
 
@@ -1945,7 +1936,7 @@ struct Lara : Character {
                     int pickupFrame = stand == STAND_GROUND ? PICKUP_FRAME_GROUND : PICKUP_FRAME_UNDERWATER;
                     if (animation.isFrameActive(pickupFrame)) {
                         item.flags.invisible = true;
-                        inventory.add(item.type, 1);
+                        game->invAdd(item.type, 1);
                     }
                 }
                 break;
diff --git a/src/level.h b/src/level.h
index 628cb69..896765e 100644
--- a/src/level.h
+++ b/src/level.h
@@ -9,6 +9,7 @@
 #include "enemy.h"
 #include "camera.h"
 #include "trigger.h"
+#include "inventory.h"
 
 #ifdef _DEBUG
     #include "debug.h"
@@ -16,6 +17,7 @@
 
 struct Level : IGame {
     TR::Level   level;
+    Inventory   inventory;
     Texture     *atlas;
     Texture     *cube;
     MeshBuilder *mesh;
@@ -36,8 +38,11 @@ struct Level : IGame {
     WaterCache   *waterCache;
     ZoneCache    *zoneCache;
 
-    Sound::Sample *sndAmbient;
+    Sound::Sample *sndSoundtrack;
     Sound::Sample *sndUnderwater;
+    Sound::Sample *sndCurrent;
+
+    bool lastTitle;
 
 // IGame implementation ========
     virtual TR::Level* getLevel() {
@@ -83,6 +88,16 @@ struct Level : IGame {
         shaderCache->bind(pass, type, (underwater ? ShaderCache::FX_UNDERWATER : 0) | (alphaTest ? ShaderCache::FX_ALPHA_TEST : 0) | ((params->clipHeight != NO_CLIP_PLANE && pass == Core::passCompose) ? ShaderCache::FX_CLIP_PLANE : 0));
     }
 
+    virtual void setupBinding() {
+        atlas->bind(sDiffuse);
+        Core::whiteTex->bind(sNormal);
+        Core::whiteTex->bind(sMask);
+        Core::whiteTex->bind(sReflect);        
+        cube->bind(sEnvironment);
+        Core::basis.identity();
+    }
+
+
     virtual void renderEnvironment(int roomIndex, const vec3 &pos, Texture **targets, int stride = 0) {
         PROFILE_MARKER("ENVIRONMENT");
         Core::eye = 0.0f;
@@ -111,9 +126,40 @@ struct Level : IGame {
     virtual void fxQuake(float time) {
         camera->shake = time;
     }
+
+    virtual bool invUse(TR::Entity::Type item, TR::Entity::Type slot) {
+        lara->useItem(item);
+        return inventory.use(item, slot);
+    }
+
+    virtual void invAdd(TR::Entity::Type type, int count) {
+        inventory.add(type, count);
+    }
+
+    virtual Sound::Sample* playSound(int id, const vec3 &pos, int flags, int group = -1) const {
+        if (level.version == TR::Level::VER_TR1_PSX && id == TR::SND_SECRET)
+            return NULL;
+
+        int16 a = level.soundsMap[id];
+        if (a == -1) return NULL;
+
+        TR::SoundInfo &b = level.soundsInfo[a];
+        if (b.chance == 0 || (rand() & 0x7fff) <= b.chance) {
+            int   index  = b.offset + rand() % b.flags.count;
+            float volume = (float)b.volume / 0x7FFF;
+            float pitch  = b.flags.pitch ? (0.9f + randf() * 0.2f) : 1.0f; 
+            if (b.flags.mode == 1) flags |= Sound::UNIQUE;
+            //if (b.flags.mode == 2) flags |= Sound::REPLAY;
+            if (b.flags.mode == 3) flags |= Sound::SYNC;
+            if (b.flags.gain) volume = max(0.0f, volume - randf() * 0.25f);
+            if (b.flags.fixed) flags |= Sound::LOOP;
+            return Sound::play(level.getSampleStream(index), pos, volume, pitch, flags, group * 1000 + index);
+        }
+        return NULL;
+    }
 //==============================
 
-    Level(Stream &stream, Stream *snd, bool demo, bool home) : level(stream, demo), lara(NULL) {
+    Level(Stream &stream, Stream *snd, bool demo, bool home) : level(stream, demo), inventory(this), lara(NULL) {
         params->time = 0.0f;
 
         #ifdef _DEBUG
@@ -241,29 +287,44 @@ struct Level : IGame {
             }
         }
 
-        ASSERT(lara != NULL);
-        camera = new Camera(this, lara);
+        lastTitle = false;
 
-        level.cameraController = camera;
+        if (!isTitle()) {
+            ASSERT(lara != NULL);
+            camera = new Camera(this, lara);
 
-        ambientCache = Core::settings.ambient ? new AmbientCache(this) : NULL;
-        waterCache   = Core::settings.water   ? new WaterCache(this)   : NULL;
-        zoneCache    = new ZoneCache(this);
-        shadow       = Core::settings.shadows ? new Texture(SHADOW_TEX_SIZE, SHADOW_TEX_SIZE, Texture::SHADOW, false) : NULL;
+            level.cameraController = camera;
 
-        initReflections();
+            ambientCache = Core::settings.ambient ? new AmbientCache(this) : NULL;
+            waterCache   = Core::settings.water   ? new WaterCache(this)   : NULL;
+            zoneCache    = new ZoneCache(this);
+            shadow       = Core::settings.shadows ? new Texture(SHADOW_TEX_SIZE, SHADOW_TEX_SIZE, Texture::SHADOW, false) : NULL;
 
-        // init sounds
-        //Sound::play(Sound::openWAD("05_Lara's_Themes.wav"), 1, 1, 0);
-        sndAmbient = Sound::play(snd, vec3(0.0f), 1, 1, Sound::Flags::LOOP);
+            initReflections();
 
-        sndUnderwater = lara->playSound(TR::SND_UNDERWATER, vec3(0.0f), Sound::LOOP);
-        if (sndUnderwater)
-            sndUnderwater->volume = 0.0f;
+            // init sounds
+            //Sound::play(Sound::openWAD("05_Lara's_Themes.wav"), 1, 1, 0);
+            sndSoundtrack = Sound::play(snd, vec3(0.0f), 1, 1, Sound::Flags::LOOP);
 
-        for (int i = 0; i < level.soundSourcesCount; i++) {
-            TR::SoundSource &src = level.soundSources[i];
-            lara->playSound(src.id, vec3(float(src.x), float(src.y), float(src.z)), Sound::PAN | Sound::LOOP | Sound::STATIC);
+            sndUnderwater = lara->playSound(TR::SND_UNDERWATER, vec3(0.0f), Sound::LOOP);
+            if (sndUnderwater)
+                sndUnderwater->volume = 0.0f;
+
+            sndCurrent = sndSoundtrack;
+
+            for (int i = 0; i < level.soundSourcesCount; i++) {
+                TR::SoundSource &src = level.soundSources[i];
+                lara->playSound(src.id, vec3(float(src.x), float(src.y), float(src.z)), Sound::PAN | Sound::LOOP | Sound::STATIC);
+            }
+        } else {
+            camera          = NULL;
+            ambientCache    = NULL;
+            waterCache      = NULL;
+            zoneCache       = NULL;
+            shadow          = NULL;
+            sndSoundtrack   = NULL;
+            sndUnderwater   = NULL;
+            sndCurrent      = NULL;
         }
     }
 
@@ -289,6 +350,10 @@ struct Level : IGame {
         Sound::stopAll();
     }
 
+    bool isTitle() {
+        return lara == NULL || inventory.isActive();
+    }
+
     void initTextures() {
         if (!level.tilesCount) {
             atlas = NULL;
@@ -554,6 +619,13 @@ struct Level : IGame {
             lara->reset(TR::NO_ROOM, camera->pos, camera->angle.y, false);
         }
     #endif
+        if (isTitle()) {
+            sndCurrent->volume = 0.0f;
+            Sound::reverb.setRoomSize(vec3(1.0f));
+            inventory.update();
+            return;
+        }
+
         params->time += Core::deltaTime;
 
         for (int i = 0; i < level.entitiesCount; i++) {
@@ -572,9 +644,14 @@ struct Level : IGame {
         }
 
         camera->update();
-        float ambientVolume =  camera->isUnderwater() ? 0.0f : 1.0f;
-        if (sndAmbient) sndAmbient->volume = ambientVolume;
-        if (sndUnderwater) sndUnderwater->volume = 1.0f - ambientVolume;
+
+        sndCurrent = camera->isUnderwater() ? sndUnderwater : sndSoundtrack;
+
+        if (sndCurrent) {
+            if (sndSoundtrack && sndCurrent != sndSoundtrack) sndSoundtrack->volume = 0.0f;
+            if (sndUnderwater && sndCurrent != sndUnderwater) sndUnderwater->volume = 0.0f;
+            sndCurrent->volume = 1.0f;
+        }
 
         if (waterCache) 
             waterCache->update();
@@ -585,16 +662,7 @@ struct Level : IGame {
 
         camera->setup(Core::pass == Core::passCompose);
 
-        atlas->bind(sDiffuse);
-        Core::whiteTex->bind(sNormal);
-        Core::whiteTex->bind(sMask);
-        Core::whiteTex->bind(sReflect);        
-        cube->bind(sEnvironment);
-
-        if (!Core::support.VAO)
-            mesh->bind();
-        //Core::mViewProj = Core::mLightProj;
-        Core::basis.identity();
+        setupBinding();
 
         // clear visibility flag for rooms
         for (int i = 0; i < level.roomsCount; i++)
@@ -694,39 +762,8 @@ struct Level : IGame {
             Core::setClearColor(vec4(0.0f, 0.0f, 0.0f, 0.0f));
     }
 
-    void render() {
-        Core::invalidateTarget(true, true);
-        params->clipHeight  = NO_CLIP_PLANE;
-        params->clipSign    = 1.0f;
-        params->waterHeight = params->clipHeight;
-
-        if (ambientCache)
-            ambientCache->precessQueue();
-        if (waterCache)
-            waterCache->reset();
-        if (shadow)
-            renderShadows(lara->getRoomIndex());
-
-        Core::setClearStencil(128);
-        Core::setTarget(NULL, true);
-        Core::setViewport(0, 0, Core::width, Core::height);
-        
-        if (waterCache)
-            waterCache->checkVisibility = true;           
-
-        renderCompose(camera->getRoomIndex(), true);
-
-        if (waterCache) {
-            waterCache->checkVisibility = false;
-            if (waterCache->visible) {
-                waterCache->renderMask();
-                waterCache->getRefract();
-                waterCache->simulate();
-                waterCache->render();
-            }
-        }
-
     #ifdef _DEBUG
+    void renderDebug() {
 //        Core::mViewInv = camera->mViewInv;
 //        Core::mView = Core::mViewInv.inverse();
         Core::setViewport(0, 0, Core::width, Core::height);
@@ -868,107 +905,74 @@ struct Level : IGame {
 
             Core::setBlending(bmNone);
 
-        /*
-            static int dbg_ambient = 0;
-            dbg_ambient = int(params->time * 2) % 4;
-
-            shadow->unbind(sShadow);
-            atlas->bind(sDiffuse);
-            glEnable(GL_TEXTURE_2D);
-            glDisable(GL_CULL_FACE);
-            glColor3f(1, 1, 1);
-            for (int j = 0; j < 6; j++) {
-                glPushMatrix();
-                vec3 p = lara->pos;//getPos();
-                glTranslatef(p.x, p.y - 1024, p.z);
-                switch (j) {
-                    case 0 : glRotatef( 90, 0, 1, 0); break;
-                    case 1 : glRotatef(-90, 0, 1, 0); break;
-                    case 2 : glRotatef(-90, 1, 0, 0); break;
-                    case 3 : glRotatef( 90, 1, 0, 0); break;
-                    case 4 : glRotatef(  0, 0, 1, 0); break;
-                    case 5 : glRotatef(180, 0, 1, 0); break;
-                }
-                glTranslatef(0, 0, 128);
-                
-                ambientCache->textures[j * 4 + dbg_ambient]->bind(sDiffuse);
-                
-                glBegin(GL_QUADS);
-                    glTexCoord2f(0, 0); glVertex3f(-128,  128, 0);
-                    glTexCoord2f(1, 0); glVertex3f( 128,  128, 0);
-                    glTexCoord2f(1, 1); glVertex3f( 128, -128, 0);
-                    glTexCoord2f(0, 1); glVertex3f(-128, -128, 0);
-                glEnd();
-
-                glPopMatrix();
-            }
-
-            glEnable(GL_CULL_FACE);
-            glDisable(GL_TEXTURE_2D);
-             
-            glLineWidth(4);
-            glBegin(GL_LINES);
-            float S = 64.0f;
-            for (int i = 0; i < level.roomsCount; i++) {
-                TR::Room &r = level.rooms[i];                
-                for (int j = 0; j < r.xSectors * r.zSectors; j++) {
-                    TR::Room::Sector &s = r.sectors[j];
-                    vec3 p = vec3(float((j / r.zSectors) * 1024 + 512 + r.info.x),
-                                  float(max((s.floor - 2) * 256, (s.floor + s.ceiling) * 256 / 2)),
-                                  float((j % r.zSectors) * 1024 + 512 + r.info.z));
-
-                    AmbientCache::Cube &cube = ambientCache->items[ambientCache->offsets[i] + j];
-                    if (cube.status == AmbientCache::Cube::READY) {
-                        glColor3f(powf(cube.colors[0].x, 1.0f / 2.2f), powf(cube.colors[0].y, 1.0f / 2.2f), powf(cube.colors[0].z, 1.0f / 2.2f));
-                        glVertex3f(p.x + 0, p.y + 0, p.z + 0);
-                        glVertex3f(p.x + S, p.y + 0, p.z + 0);
-
-                        glColor3f(powf(cube.colors[1].x, 1.0f / 2.2f), powf(cube.colors[1].y, 1.0f / 2.2f), powf(cube.colors[1].z, 1.0f / 2.2f));
-                        glVertex3f(p.x + 0, p.y + 0, p.z + 0);
-                        glVertex3f(p.x - S, p.y + 0, p.z + 0);
-
-                        glColor3f(powf(cube.colors[2].x, 1.0f / 2.2f), powf(cube.colors[2].y, 1.0f / 2.2f), powf(cube.colors[2].z, 1.0f / 2.2f));
-                        glVertex3f(p.x + 0, p.y + 0, p.z + 0);
-                        glVertex3f(p.x + 0, p.y + S, p.z + 0);
-
-                        glColor3f(powf(cube.colors[3].x, 1.0f / 2.2f), powf(cube.colors[3].y, 1.0f / 2.2f), powf(cube.colors[3].z, 1.0f / 2.2f));
-                        glVertex3f(p.x + 0, p.y + 0, p.z + 0);
-                        glVertex3f(p.x + 0, p.y - S, p.z + 0);
-
-                        glColor3f(powf(cube.colors[4].x, 1.0f / 2.2f), powf(cube.colors[4].y, 1.0f / 2.2f), powf(cube.colors[4].z, 1.0f / 2.2f));
-                        glVertex3f(p.x + 0, p.y + 0, p.z + 0);
-                        glVertex3f(p.x + 0, p.y + 0, p.z + S);
-
-                        glColor3f(powf(cube.colors[5].x, 1.0f / 2.2f), powf(cube.colors[5].y, 1.0f / 2.2f), powf(cube.colors[5].z, 1.0f / 2.2f));
-                        glVertex3f(p.x + 0, p.y + 0, p.z + 0);
-                        glVertex3f(p.x + 0, p.y + 0, p.z - S);
-                    }
-                }
-            }
-            glEnd();
-            glLineWidth(1);
-
-            */
-           /*
-            shaders[shGUI]->bind();
-            Core::mViewProj = mat4(0, (float)Core::width, (float)Core::height, 0, 0, 1);
-            Core::active.shader->setParam(uViewProj, Core::mViewProj);            
-            atlas->bind(0);
-
-            glDisable(GL_DEPTH_TEST);
-            glDisable(GL_CULL_FACE);
-            
-            glEnable(GL_CULL_FACE);
-            glEnable(GL_DEPTH_TEST);
-            */
-
-
             Debug::Level::info(level, lara->getEntity(), lara->animation);
 
 
         Debug::end();
-    #endif
     }
+    #endif
+
+    void renderGame() {
+        Core::invalidateTarget(true, true);
+        params->clipHeight  = NO_CLIP_PLANE;
+        params->clipSign    = 1.0f;
+        params->waterHeight = params->clipHeight;
+
+        if (ambientCache)
+            ambientCache->precessQueue();
+        if (waterCache)
+            waterCache->reset();
+        if (shadow)
+            renderShadows(lara->getRoomIndex());
+
+        Core::setClearStencil(128);
+        Core::setTarget(NULL, true);
+        
+        if (waterCache)
+            waterCache->checkVisibility = true;
+
+        renderCompose(camera->getRoomIndex(), true);
+
+        if (waterCache) {
+            waterCache->checkVisibility = false;
+            if (waterCache->visible) {
+                waterCache->renderMask();
+                waterCache->getRefract();
+                waterCache->simulate();
+                waterCache->render();
+            }
+        }
+    }
+
+    void renderInventory() {
+        Core::setTarget(NULL, true);
+        inventory.render();
+    }
+
+    void render() {
+        bool title  = isTitle();
+        bool copyBg = title && lastTitle != title;
+
+        if (copyBg) {
+            vec4 vp = Core::viewportDef;
+            Core::defaultTarget = inventory.background[0];
+            Core::setTarget(Core::defaultTarget, true);
+            renderGame();
+            Core::viewportDef = vp;
+            Core::defaultTarget = NULL;
+
+            inventory.prepareBackground();
+        }
+
+        if (!title)
+            renderGame();
+
+        if (title)
+            renderInventory();
+
+        lastTitle = title;
+    }
+
 };
 
 #endif
\ No newline at end of file
diff --git a/src/mesh.h b/src/mesh.h
index 1c36570..9f91174 100644
--- a/src/mesh.h
+++ b/src/mesh.h
@@ -21,8 +21,13 @@ struct MeshRange {
 
     MeshRange() : aIndex(-1) {}
 
-    void setup() const {
-        Vertex *v = (Vertex*)(vStart * sizeof(Vertex));
+    void setup(Vertex *offset) const {
+        glEnableVertexAttribArray(aCoord);
+        glEnableVertexAttribArray(aTexCoord);
+        glEnableVertexAttribArray(aNormal);
+        glEnableVertexAttribArray(aColor);
+
+        Vertex *v = (Vertex*)(offset + vStart);
         glVertexAttribPointer(aCoord,    4, GL_SHORT,         false, sizeof(Vertex), &v->coord);
         glVertexAttribPointer(aTexCoord, 4, GL_SHORT,         false, sizeof(Vertex), &v->texCoord);
         glVertexAttribPointer(aNormal,   4, GL_SHORT,         true,  sizeof(Vertex), &v->normal);
@@ -30,12 +35,9 @@ struct MeshRange {
     }
 
     void bind(GLuint *VAO) const {
-        if (aIndex > -1) {
-            if (Core::active.VAO != VAO[aIndex]) {
-                glBindVertexArray(Core::active.VAO = VAO[aIndex]);
-            }
-        } else
-            setup();        
+        GLuint vao = aIndex == -1 ? 0 : VAO[aIndex];
+        if (Core::support.VAO && Core::active.VAO != vao)
+            glBindVertexArray(Core::active.VAO = vao);
     }
 };
 
@@ -52,7 +54,7 @@ struct Mesh {
 
     Mesh(Index *indices, int iCount, Vertex *vertices, int vCount, int aCount) : VAO(NULL), iCount(iCount), vCount(vCount), aCount(aCount), aIndex(0) {
         glGenBuffers(2, ID);
-        bind();
+        bind(true);
         glBufferData(GL_ELEMENT_ARRAY_BUFFER, iCount * sizeof(Index), indices, GL_STATIC_DRAW);
         glBufferData(GL_ARRAY_BUFFER, vCount * sizeof(Vertex), vertices, GL_STATIC_DRAW);
 
@@ -74,40 +76,50 @@ struct Mesh {
         if (Core::support.VAO) {
             range.aIndex = aIndex++;
             range.bind(VAO);
-            bind();
-            range.setup();
+            bind(true);
+            range.setup(NULL);
         } else
             range.aIndex = -1;
     }
 
-    void bind() {
-        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ID[0]);
-        glBindBuffer(GL_ARRAY_BUFFER, ID[1]);
-
-        glEnableVertexAttribArray(aCoord);
-        glEnableVertexAttribArray(aTexCoord);
-        glEnableVertexAttribArray(aNormal);
-        glEnableVertexAttribArray(aColor);
+    void bind(bool force = false) {
+        if (force || Core::active.iBuffer != ID[0])
+            glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, Core::active.iBuffer = ID[0]);
+        if (force || Core::active.vBuffer != ID[1])
+            glBindBuffer(GL_ARRAY_BUFFER, Core::active.vBuffer = ID[1]);
     }
 
-    void DIP(const MeshRange &range) {
-        glDrawElements(GL_TRIANGLES, range.iCount, GL_UNSIGNED_SHORT, (GLvoid*)(range.iStart * sizeof(Index)));
+    void unbind() {
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, Core::active.iBuffer = 0);
+        glBindBuffer(GL_ARRAY_BUFFER, Core::active.vBuffer = 0);
+    }
+
+    void DIP(const MeshRange &range, Index *iOffset = 0) {
+        glDrawElements(GL_TRIANGLES, range.iCount, GL_UNSIGNED_SHORT, (GLvoid*)(iOffset + range.iStart) );
         Core::stats.dips++;
         Core::stats.tris += range.iCount / 3;
     }
 
-    void render(const MeshRange &range) {
+    void render(const MeshRange &range, Index *iOffset = NULL, Vertex *vOffset = NULL) {
         range.bind(VAO);
 
+        if (vOffset) {
+            unbind();
+            range.setup(vOffset);
+        } else if (range.aIndex == -1) {
+            bind();
+            range.setup(NULL);
+        };
+
         if (Core::active.stencilTwoSide && Core::support.stencil == 0) {
             Core::setCulling(cfBack);
             glStencilOp(GL_KEEP, GL_DECR, GL_KEEP);
-            DIP(range);
+            DIP(range, iOffset);
             Core::setCulling(cfFront);
             glStencilOp(GL_KEEP, GL_INCR, GL_KEEP);
         }
 
-        DIP(range);
+        DIP(range, iOffset);
     }
 };
 
@@ -904,22 +916,39 @@ struct MeshBuilder {
         if (tex) addTexCoord(vertices, vCount, tex, false);
     }
 
-    void addSprite(Index *indices, Vertex *vertices, int &iCount, int &vCount, int vStart, int16 x, int16 y, int16 z, const TR::SpriteTexture &sprite, uint8 intensity) {
+    void addSprite(Index *indices, Vertex *vertices, int &iCount, int &vCount, int vStart, int16 x, int16 y, int16 z, const TR::SpriteTexture &sprite, uint8 intensity, bool expand = false) {
         addQuad(indices, iCount, vCount, vStart, NULL, NULL);
 
         Vertex *quad = &vertices[vCount];
 
-        quad[0].coord  = quad[1].coord  = quad[2].coord  = quad[3].coord  = { x, y, z, 0 };
+        int16 x0, y0, x1, y1;
+
+        if (expand) {
+            x0 = x + int16(sprite.l);
+            y0 = y + int16(sprite.t);
+            x1 = x + int16(sprite.r);
+            y1 = y + int16(sprite.b);
+        } else {
+            x0 = x1 = x;
+            y0 = y1 = y;
+        }
+
+        quad[0].coord = { x0, y0, z, 0 };
+        quad[1].coord = { x1, y0, z, 0 };
+        quad[2].coord = { x1, y1, z, 0 };
+        quad[3].coord = { x0, y1, z, 0 };
+
+
         quad[0].normal = quad[1].normal = quad[2].normal = quad[3].normal = { 0, 0, 0, 0 };
         quad[0].color  = quad[1].color  = quad[2].color  = quad[3].color  = { 255, 255, 255, intensity };
 
         int  tx = (sprite.tile % 4) * 256;
         int  ty = (sprite.tile / 4) * 256;
 
-        int16 u0 = ((tx + sprite.texCoord[0].x + 1) << 5);
-        int16 v0 = ((ty + sprite.texCoord[0].y + 1) << 5);
-        int16 u1 = ((tx + sprite.texCoord[1].x - 1) << 5);
-        int16 v1 = ((ty + sprite.texCoord[1].y - 1) << 5);
+        int16 u0 = (((tx + sprite.texCoord[0].x) << 5));
+        int16 v0 = (((ty + sprite.texCoord[0].y) << 5));
+        int16 u1 = (((tx + sprite.texCoord[1].x) << 5));
+        int16 v1 = (((ty + sprite.texCoord[1].y) << 5));
 
         quad[0].texCoord = { u0, v0, sprite.l, sprite.t };
         quad[1].texCoord = { u1, v0, sprite.r, sprite.t };
@@ -932,6 +961,15 @@ struct MeshBuilder {
     void bind() {
         mesh->bind();
     }
+    
+    void renderBuffer(Index *indices, Vertex *vertices, int iCount) {
+        MeshRange range;
+        range.iStart = 0;
+        range.vStart = 0;
+        range.iCount = iCount;
+
+        mesh->render(range, indices, vertices);
+    }
 
     void renderRoomGeometry(int roomIndex, bool transparent) {
         ASSERT(rooms[roomIndex].geometry[transparent].iCount > 0);
@@ -1000,57 +1038,6 @@ struct MeshBuilder {
         d[0] = clGrayD; d[1] = clGrayL; d[2] = clGrayL; d[3] = clGrayL; d[4] = clGrayL; d+= 1024;
         */
     }
-
-    void textOut(const vec2 &pos, const vec4 &color, char *text) {
-        const static uint8 char_width[110] = {
-            14, 11, 11, 11, 11, 11, 11, 13, 8, 11, 12, 11, 13, 13, 12, 11, 12, 12, 11, 12, 13, 13, 13, 12, 
-            12, 11, 9, 9, 9, 9, 9, 9, 9, 9, 5, 9, 9, 5, 12, 10, 9, 9, 9, 8, 9, 8, 9, 9, 11, 9, 9, 9, 12, 8,
-            10, 10, 10, 10, 10, 9, 10, 10, 5, 5, 5, 11, 9, 10, 8, 6, 6, 7, 7, 3, 11, 8, 13, 16, 9, 4, 12, 12, 
-            7, 5, 7, 7, 7, 7, 7, 7, 7, 7, 16, 14, 14, 14, 16, 16, 16, 16, 16, 12, 14, 8, 8, 8, 8, 8, 8, 8 }; 
-        
-        static const uint8 char_map[102] = {
-            0, 64, 66, 78, 77, 74, 78, 79, 69, 70, 92, 72, 63, 71, 62, 68, 52, 53, 54, 55, 56, 57, 58, 59, 
-            60, 61, 73, 73, 66, 74, 75, 65, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 
-            18, 19, 20, 21, 22, 23, 24, 25, 80, 76, 81, 97, 98, 77, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 
-            37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 100, 101, 102, 67, 0, 0, 0, 0, 0, 0, 0 };
-        
-        if (!text) return;
-        
-        Core::active.shader->setParam(uMaterial, vec4(1.0, 0.0, 0.0, 1.0));
-        //text = "a: b";
-        Basis basis;
-        basis.identity();
-        basis.translate(vec3(pos.x, pos.y, 0.0f));
-       // text = "A";
-        while (char c = *text++) {
-            
-            int frame = c > 10 ? (c > 15 ? char_map[c - 32] : c + 91) : c + 81; 
-
-
-            //int frame = T_remapASCII[c - 32];
-            /*
-            if (c >= 'A' && c <= 'Z')
-                frame = c - 'A';
-            else if (c >= 'a' && c <= 'z')
-                frame = 26 + c - 'a';
-            else if (c >= '0' && c <= '9')
-                frame = 52 + c - '0';
-            else {
-                if (c == ' ')
-                    m.translate(vec3(16, 0.0f, 0.0f));
-                continue;
-            }
-            */
-            if (c == ' ' || c == '_') {
-                basis.translate(vec3(char_width[0], 0.0f, 0.0f));
-                continue;
-            }
-
-            Core::active.shader->setParam(uBasis, basis);
-            renderSprite(15, frame);
-            basis.translate(vec3(char_width[frame], 0.0f, 0.0f));
-        }
-    }
 };
 
 #endif
\ No newline at end of file
diff --git a/src/platform/android/app/src/main/cpp/main.cpp b/src/platform/android/app/src/main/cpp/main.cpp
index 946b65d..a9fc827 100644
--- a/src/platform/android/app/src/main/cpp/main.cpp
+++ b/src/platform/android/app/src/main/cpp/main.cpp
@@ -98,7 +98,7 @@ int getPOV(int x, int y) {
 
 InputKey keyToInputKey(int code) {
     int codes[] = {
-        21, 22, 19, 20, 62, 66, 111, 59, 113, 57,
+        21, 22, 19, 20, 62, 61, 66, 111, 59, 113, 57,
         7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
         29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41,
         42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54,
diff --git a/src/platform/nix/main.cpp b/src/platform/nix/main.cpp
index 1d686f4..9675f7a 100644
--- a/src/platform/nix/main.cpp
+++ b/src/platform/nix/main.cpp
@@ -78,7 +78,7 @@ int getTime() {
 
 InputKey keyToInputKey(int code) {
     int codes[] = {
-        113, 114, 111, 116, 65, 36, 9, 50, 37, 64,
+        113, 114, 111, 116, 65, 23, 36, 9, 50, 37, 64,
         19, 10, 11, 12, 13, 14, 15, 16, 17, 18,
         38, 56, 54, 40, 26, 41, 42, 43, 31, 44, 45, 46, 58,
         57, 32, 33, 24, 27, 39, 28, 30, 55, 25, 53, 29, 52,
diff --git a/src/platform/osx/main.cpp b/src/platform/osx/main.cpp
index 535bb4d..bbcad13 100644
--- a/src/platform/osx/main.cpp
+++ b/src/platform/osx/main.cpp
@@ -42,7 +42,7 @@ void soundInit() {
 // common input functions
 InputKey keyToInputKey(int code) {
     static const int codes[] = {
-        0x7B, 0x7C, 0x7E, 0x7D, 0x31, 0x24, 0x35, 0x38, 0x3B, 0x3A,
+        0x7B, 0x7C, 0x7E, 0x7D, 0x31, 0x30, 0x24, 0x35, 0x38, 0x3B, 0x3A,
         0x1D, 0x12, 0x13, 0x14, 0x15, 0x17, 0x16, 0x1A, 0x1C, 0x19,                   // 0..9
         0x00, 0x0B, 0x08, 0x02, 0x0E, 0x03, 0x05, 0x04, 0x22, 0x26, 0x28, 0x25, 0x2E, // A..M
         0x2D, 0x1F, 0x23, 0x0C, 0x0F, 0x01, 0x11, 0x20, 0x09, 0x0D, 0x07, 0x10, 0x06, // N..Z
diff --git a/src/platform/web/index.html b/src/platform/web/index.html
index 1856ec9..1a80360 100644
--- a/src/platform/web/index.html
+++ b/src/platform/web/index.html
@@ -142,14 +142,14 @@
 				<!-- <label for="browseFile">Browse Level</label> -->
 				<input type="button" value="Browse Level" onclick="document.getElementById('browseFile').click();" /> (.PHD, .PSX)				  
 				<input type="checkbox" id="isHome"><label>alternative model (home suit, gold etc.)</label>
-				<br><br>
-				OpenLara on <a target="_blank" href="https://github.com/XProger/OpenLara">github</a> & <a target="_blank" href="https://www.facebook.com/OpenLaraTR">facebook</a><br>
+				<p style="margin:8px">
+				OpenLara on <a target="_blank" href="https://github.com/XProger/OpenLara">github</a> & <a target="_blank" href="https://www.facebook.com/OpenLaraTR">facebook</a><br><br>
 				controls:<br>
-				keyboad: move - WASD / arrows, jump - Space, action - E/Ctrl, draw weapon - Q, change weapon - 1-4, walk - Shift, side steps - ZX/walk+direction, camera - MouseR)<br>
+				keyboad: move - arrow keys, jump - Alt, action - Ctrl, draw weapon - Space, inventory - Tab, walk - Shift, side steps - ZX, change view - V)<br>
 				gamepad: PSX controls for Xbox controller<br>
-				Change view: V<br>
 				Time Control: R - slow motion, T - fast motion<br>
 				FullScreen: Alt + Enter
+				</p>
 			</span>
 
 			<script>(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');ga('create', 'UA-60009035-1', 'auto');ga('send', 'pageview');</script>
diff --git a/src/platform/web/main.cpp b/src/platform/web/main.cpp
index c702218..8d880db 100644
--- a/src/platform/web/main.cpp
+++ b/src/platform/web/main.cpp
@@ -178,7 +178,7 @@ void changeWindowMode() {
 
 InputKey keyToInputKey(int code) {
     static const int codes[] = {
-        0x25, 0x27, 0x26, 0x28, 0x20, 0x0D, 0x1B, 0x10, 0x11, 0x12,
+        0x25, 0x27, 0x26, 0x28, 0x20, 0x09, 0x0D, 0x1B, 0x10, 0x11, 0x12,
         '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
         'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
         'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
diff --git a/src/platform/win/OpenLara.vcxproj.filters b/src/platform/win/OpenLara.vcxproj.filters
index 2c1879e..3226bd0 100644
--- a/src/platform/win/OpenLara.vcxproj.filters
+++ b/src/platform/win/OpenLara.vcxproj.filters
@@ -1,9 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <ClCompile Include="..\..\libs\minimp3\minimp3.cpp" />
-    <ClCompile Include="..\..\libs\stb_vorbis\stb_vorbis.c" />
     <ClCompile Include="main.cpp" />
+    <ClCompile Include="..\..\libs\minimp3\minimp3.cpp">
+      <Filter>libs\minimp3</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\libs\stb_vorbis\stb_vorbis.c">
+      <Filter>libs\stb_vorbis</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\animation.h" />
@@ -22,8 +26,6 @@
     <ClInclude Include="..\..\inventory.h" />
     <ClInclude Include="..\..\lara.h" />
     <ClInclude Include="..\..\level.h" />
-    <ClInclude Include="..\..\libs\minimp3\libc.h" />
-    <ClInclude Include="..\..\libs\minimp3\minimp3.h" />
     <ClInclude Include="..\..\mesh.h" />
     <ClInclude Include="..\..\shader.h" />
     <ClInclude Include="..\..\sound.h" />
@@ -32,6 +34,12 @@
     <ClInclude Include="..\..\format.h" />
     <ClInclude Include="..\..\trigger.h" />
     <ClInclude Include="..\..\utils.h" />
+    <ClInclude Include="..\..\libs\minimp3\minimp3.h">
+      <Filter>libs\minimp3</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\libs\minimp3\libc.h">
+      <Filter>libs\minimp3</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\shaders\depth.glsl">
@@ -60,5 +68,14 @@
     <Filter Include="shaders">
       <UniqueIdentifier>{3fcb6c00-268a-4570-b6ca-3bf1cf1e10d7}</UniqueIdentifier>
     </Filter>
+    <Filter Include="libs">
+      <UniqueIdentifier>{0400c04a-7900-49a2-9b9d-6667d815168c}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="libs\minimp3">
+      <UniqueIdentifier>{bc55e021-2a62-4bc1-8b80-0fd900f20b2b}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="libs\stb_vorbis">
+      <UniqueIdentifier>{f26df5a9-d32a-4e5e-948c-e632c42be9fa}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/platform/win/main.cpp b/src/platform/win/main.cpp
index 43db6ee..f60d9e5 100644
--- a/src/platform/win/main.cpp
+++ b/src/platform/win/main.cpp
@@ -28,7 +28,7 @@ int getTime() {
 // common input functions
 InputKey keyToInputKey(int code) {
     static const int codes[] = {
-        VK_LEFT, VK_RIGHT, VK_UP, VK_DOWN, VK_SPACE, VK_RETURN, VK_ESCAPE, VK_SHIFT, VK_CONTROL, VK_MENU,
+        VK_LEFT, VK_RIGHT, VK_UP, VK_DOWN, VK_SPACE, VK_TAB, VK_RETURN, VK_ESCAPE, VK_SHIFT, VK_CONTROL, VK_MENU,
         '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
         'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
         'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
diff --git a/src/shader.h b/src/shader.h
index 356e9a1..1882603 100644
--- a/src/shader.h
+++ b/src/shader.h
@@ -56,7 +56,7 @@ struct Shader {
     enum Type : GLint { 
         DEFAULT = 0,
         /* shader */ SPRITE = 0, FLASH = 1, ROOM = 2, ENTITY = 3, MIRROR = 4, 
-        /* filter */ FILTER_DOWNSAMPLE = 1, 
+        /* filter */ FILTER_DOWNSAMPLE = 1, FILTER_GRAYSCALE = 2, FILTER_BLUR = 3, FILTER_MIXER = 4,
         /* water  */ WATER_DROP = 0, WATER_STEP = 1, WATER_CAUSTICS = 2, WATER_MASK = 3, WATER_COMPOSE = 4,
         MAX = 5
     };
diff --git a/src/shaders/filter.glsl b/src/shaders/filter.glsl
index d8a9aba..5b455d7 100644
--- a/src/shaders/filter.glsl
+++ b/src/shaders/filter.glsl
@@ -1,7 +1,7 @@
 R"====(
 #ifdef GL_ES
-    precision highp int;
-    precision highp float;
+	precision highp int;
+	precision highp float;
 #endif
 
 varying vec2 vTexCoord;
@@ -9,41 +9,79 @@ varying vec2 vTexCoord;
 uniform int uType;
 
 #ifdef VERTEX
-    attribute vec4 aCoord;
+	attribute vec4 aCoord;
 
-    void main() {
-        vTexCoord   = aCoord.zw;
-        gl_Position = vec4(aCoord.xy, 0.0, 1.0);
-    }
+	void main() {
+		vTexCoord	= aCoord.zw;
+		gl_Position = vec4(aCoord.xy, 0.0, 1.0);
+	}
 #else
-    uniform sampler2D sDiffuse;
-    uniform vec4 uParam; // texture size
+	uniform sampler2D sDiffuse;
+	uniform sampler2D sNormal;
 
-    vec4 downsample() {        
-        float k = 1.0 / uParam.x;
+	uniform vec4 uParam;
 
-        vec4 color = vec4(0.0);
-        for (float y = -1.5; y < 2.0; y++)
-            for (float x = -1.5; x < 2.0; x++) {
-                vec4 p;
-                p.xyz  = texture2D(sDiffuse, vTexCoord + vec2(x, y) * k).xyz;
-                p.w    = dot(p.xyz, vec3(0.299, 0.587, 0.114));
-                p.xyz *= p.w;
-                color += p;
-            }
+	vec4 downsample() { // uParam (textureSize, unused, unused, unused)
+		float k = 1.0 / uParam.x; // inverted texture size
 
-        return vec4(color.xyz / color.w, 1.0);
-    }
-    
-    vec4 filter() {
-        #ifdef FILTER_DOWNSAMPLE
-            return downsample();
-        #endif
-        return texture2D(sDiffuse, vTexCoord);
-    }
-    
-    void main() {
-        gl_FragColor = filter();
-    }
+		vec4 color = vec4(0.0);
+		for (float y = -1.5; y < 2.0; y++)
+			for (float x = -1.5; x < 2.0; x++) {
+				vec4 p;
+				p.xyz  = texture2D(sDiffuse, vTexCoord + vec2(x, y) * k).xyz;
+				p.w	   = dot(p.xyz, vec3(0.299, 0.587, 0.114));
+				p.xyz *= p.w;
+				color += p;
+			}
+
+		return vec4(color.xyz / color.w, 1.0);
+	}
+
+	vec4 grayscale() { // uParam (factor, unused, unused, unused)
+		vec4 color = texture2D(sDiffuse, vTexCoord);
+		vec3 gray  = vec3(dot(color, vec4(0.299, 0.587, 0.114, 0.0)));
+		return vec4(mix(color.xyz, gray, uParam.x), color.w);
+	}
+
+	vec4 blur() { // uParam (dirX, dirY, 1 / textureSize, unused)
+		const vec3 offset = vec3(0.0, 1.3846153846, 3.2307692308);
+		const vec3 weight = vec3(0.2270270270, 0.3162162162, 0.0702702703);
+
+		vec2 dir   = uParam.xy * uParam.z;
+		vec4 color = texture2D(sDiffuse, vTexCoord) * weight[0];
+		color += texture2D(sDiffuse, vTexCoord + dir * offset[1]) * weight[1];
+		color += texture2D(sDiffuse, vTexCoord - dir * offset[1]) * weight[1];
+		color += texture2D(sDiffuse, vTexCoord + dir * offset[2]) * weight[2];
+		color += texture2D(sDiffuse, vTexCoord - dir * offset[2]) * weight[2];
+		return color;
+	}
+
+	vec4 mixer() { // uParam (lerp factor from diffuse to normal textures, multiply, unused, unused)
+		return mix(texture2D(sDiffuse, vTexCoord), texture2D(sNormal, vTexCoord), uParam.x) * uParam.y;
+	}
+
+	vec4 filter() {
+		#ifdef FILTER_DOWNSAMPLE
+			return downsample();
+		#endif
+
+		#ifdef FILTER_GRAYSCALE
+			return grayscale();
+		#endif
+
+		#ifdef FILTER_BLUR
+			return blur();
+		#endif
+
+		#ifdef FILTER_MIXER
+			return mixer();
+		#endif
+
+		return texture2D(sDiffuse, vTexCoord);
+	}
+
+	void main() {
+		gl_FragColor = filter();
+	}
 #endif
 )===="
\ No newline at end of file
diff --git a/src/shaders/gui.glsl b/src/shaders/gui.glsl
index 022f03e..4d157a3 100644
--- a/src/shaders/gui.glsl
+++ b/src/shaders/gui.glsl
@@ -1,30 +1,30 @@
 R"====(
 #ifdef GL_ES
-    precision lowp  int;
-    precision highp float;
+	precision lowp	int;
+	precision highp float;
 #endif
 
 varying vec2 vTexCoord;
 
 #ifdef VERTEX
-    uniform mat4 uViewProj;
-    uniform vec4 uPosScale;
+	uniform mat4 uViewProj;
+	uniform vec4 uPosScale;
 
-    attribute vec4 aCoord;
-    attribute vec4 aTexCoord;
+	attribute vec4 aCoord;
+	attribute vec4 aTexCoord;
 
-    #define TEXCOORD_SCALE (1.0 / 32767.0)
-    
-    void main() {
-        vTexCoord   = aTexCoord.xy * TEXCOORD_SCALE;
-        gl_Position = uViewProj * vec4(aCoord.xy * uPosScale.zw + uPosScale.xy, 0.0, 1.0);
-    }
+	#define TEXCOORD_SCALE (1.0 / 32767.0)
+
+	void main() {
+		vTexCoord	= aTexCoord.xy * TEXCOORD_SCALE;
+		gl_Position = uViewProj * vec4(aCoord.xy * uPosScale.zw + uPosScale.xy, 0.0, 1.0);
+	}
 #else
-    uniform sampler2D   sDiffuse;
-    uniform vec4        uMaterial;
+	uniform sampler2D	sDiffuse;
+	uniform vec4		uMaterial;
 
-    void main() {
-        gl_FragColor = /* texture2D(sDiffuse, vTexCoord) * */ uMaterial;
-    }
+	void main() {
+		gl_FragColor = texture2D(sDiffuse, vTexCoord) * uMaterial;
+	}
 #endif
 )===="
\ No newline at end of file
diff --git a/src/ui.h b/src/ui.h
index 4938797..c941a25 100644
--- a/src/ui.h
+++ b/src/ui.h
@@ -4,137 +4,100 @@
 #include "core.h"
 #include "controller.h"
 
-struct UI {
-    enum TouchButton { bNone, bWeapon, bWalk, bAction, bJump, bMAX };
-    enum TouchZone   { zMove, zLook, zButton, zMAX };
+namespace UI {
+    IGame *game;
 
-    IGame       *game;
-    float       touchTimerVis, touchTimerTap;
-    InputKey    touch[zMAX];
-    TouchButton btn;
-    vec2        btnPos[bMAX];
-    float       btnRadius;
-    bool        doubleTap;
+    const static uint8 char_width[110] = {
+        14, 11, 11, 11, 11, 11, 11, 13, 8, 11, 12, 11, 13, 13, 12, 11, 12, 12, 11, 12, 13, 13, 13, 12, 
+        12, 11, 9, 9, 9, 9, 9, 9, 9, 9, 5, 9, 9, 5, 12, 10, 9, 9, 9, 8, 9, 8, 9, 9, 11, 9, 9, 9, 12, 8,
+        10, 10, 10, 10, 10, 9, 10, 10, 5, 5, 5, 11, 9, 10, 8, 6, 6, 7, 7, 3, 11, 8, 13, 16, 9, 4, 12, 12, 
+        7, 5, 7, 7, 7, 7, 7, 7, 7, 7, 16, 14, 14, 14, 16, 16, 16, 16, 16, 12, 14, 8, 8, 8, 8, 8, 8, 8 }; 
+        
+    static const uint8 char_map[102] = {
+            0, 64, 66, 78, 77, 74, 78, 79, 69, 70, 92, 72, 63, 71, 62, 68, 52, 53, 54, 55, 56, 57, 58, 59, 
+        60, 61, 73, 73, 66, 74, 75, 65, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 
+        18, 19, 20, 21, 22, 23, 24, 25, 80, 76, 81, 97, 98, 77, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 
+        37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 100, 101, 102, 67, 0, 0, 0, 0, 0, 0, 0 };
 
-    UI(IGame *game) : game(game), touchTimerVis(0.0f), touchTimerTap(0.0f), doubleTap(false) {
-        touch[zMove] = touch[zLook] = touch[zButton] = ikNone;
+    enum Align  { aLeft, aRight, aCenter };
+
+    inline int charRemap(char c) {
+        return c > 10 ? (c > 15 ? char_map[c - 32] : c + 91) : c + 81; 
     }
 
-    bool checkTouchZone(TouchZone zone) {
-        InputKey &t = touch[zone];
-        if (t != ikNone && !Input::down[t]) {
-            t = ikNone;
-            return true;
+    int getTextWidth(const char *text) {
+        int width = 0;
+
+        while (char c = *text++)
+            width += (c == ' ' || c == '_') ? 6 : (char_width[charRemap(c)] + 1);
+
+        return width - 1;
+    }
+
+    #define MAX_CHARS 1024
+
+    struct {
+        Vertex  vertices[MAX_CHARS * 4];
+        Index   indices[MAX_CHARS * 6];
+        int     iCount;
+        int     vCount;
+    } buffer;
+
+    void textBegin() {
+        buffer.iCount = buffer.vCount = 0;
+    }
+
+    void textEnd(IGame *game) {
+        if (buffer.iCount > 0) {
+            game->getMesh()->renderBuffer(buffer.indices, buffer.vertices, buffer.iCount);
+            buffer.iCount = buffer.vCount = 0;
         }
-        return false;
     }
 
-    void getTouchDir(InputKey touch, vec2 &dir) {
-        vec2 delta = vec2(0.0f);
-        if (touch == ikNone)
-            return;
+    void textOut(IGame *game, const vec2 &pos, const char *text, Align align = aLeft, float width = 0) {        
+        if (!text) return;
+       
+        TR::Level *level = game->getLevel();
+        MeshBuilder *mesh = game->getMesh();
 
-        Input::Touch &t = Input::touch[touch - ikTouchA];
-        vec2 d = t.pos - t.start;                
-        float len = d.length();
-        if (len > EPS)
-            delta = d * (min(len / 100.0f, 1.0f) / len);
+        int seq = level->extra.glyphSeq;
 
-        dir = delta;
-    }
+        int x = int(pos.x);
+        int y = int(pos.y);
 
-    void getTouchButton(const vec2 &pos) {
-        btn = bMAX;
-        float minDist = 1000.0f;
-        for (int i = 0; i < bMAX; i++) {
-            float d = (pos - btnPos[i]).length();
-            if (d < minDist) {
-                minDist = d;
-                btn = TouchButton(i);
+        if (align == aCenter)
+            x += (int(width) - getTextWidth(text)) / 2;
+
+        if (align == aRight)
+            x += int(width) - getTextWidth(text);
+
+        while (char c = *text++) {
+            if (c == ' ' || c == '_') {
+                x += 6;
+                continue;
             }
+
+            int frame = charRemap(c);
+
+            if (buffer.iCount == MAX_CHARS * 6)
+                textEnd(game);
+
+            TR::SpriteTexture &sprite = level->spriteTextures[level->spriteSequences[seq].sStart + frame];
+            mesh->addSprite(buffer.indices, buffer.vertices, buffer.iCount, buffer.vCount, 0, x, y, 0, sprite, 255, true);
+
+            x += char_width[frame] + 1;
         }
     }
 
-    void touchSetDown(bool down) {
-        switch (btn) {
-            case bWeapon : Input::setDown(ikJoyY,  down); break;
-            case bWalk   : Input::setDown(ikJoyLB, down); break;
-            case bAction : Input::setDown(ikJoyA,  down); break;
-            case bJump   : Input::setDown(ikJoyX,  down); break;
-            default      : ;
-        }        
+    #undef MAX_CHARS
+
+
+    void init(IGame *game) {
+        UI::game = game;
     }
 
     void update() {
-        if (touchTimerTap > 0.0f)
-            touchTimerTap = max(0.0f, touchTimerTap - Core::deltaTime);
-
-        if (touch[zMove] != ikNone || touch[zLook] != ikNone || touch[zButton] != ikNone)
-            touchTimerVis = 30.0f;
-        else
-            if (touchTimerVis > 0.0f)
-                touchTimerVis = max(0.0f, touchTimerVis - Core::deltaTime);
-
-    // update buttons
-        float offset = Core::height * 0.25f;
-        float radius = offset; 
-        vec2  center = vec2(Core::width - offset * 0.7f, Core::height - offset * 0.7f);
-
-        btnPos[bWeapon] = center;
-        btnPos[bJump]   = center + vec2(cos(-PI * 0.5f), sin(-PI * 0.5f)) * radius;
-        btnPos[bAction] = center + vec2(cos(-PI * 3.0f / 4.0f), sin(-PI * 3.0f / 4.0f)) * radius;
-        btnPos[bWalk]   = center + vec2(cos(-PI), sin(-PI)) * radius;
-        btnRadius       = Core::height * (25.0f / 1080.0f);
-
-    // touch update
-        if (checkTouchZone(zMove))
-            Input::joy.L = vec2(0.0f);
-
-        if (checkTouchZone(zLook))
-            Input::joy.R = vec2(0.0f);
-
-        if (checkTouchZone(zButton)) {
-            touchSetDown(false);
-            btn = bNone;
-        }
-
-        if (doubleTap) {
-            doubleTap = false;
-            Input::setDown(ikJoyB, false);
-        }
-
-        float zoneSize = Core::width / 3.0f;
-
-        for (int i = 0; i < COUNT(Input::touch); i++) {
-            InputKey key = InputKey(i + ikTouchA);
-
-            if (!Input::down[key]) continue;
-            if (key == touch[zMove] || key == touch[zLook] || key == touch[zButton]) continue;
-
-            int zone = clamp(int(Input::touch[i].pos.x / zoneSize), 0, 2);
-            InputKey &t = touch[zone];
-
-            if (t == ikNone) {
-                t = key;
-                if (zone == zMove) {
-                    if (touchTimerTap > 0.0f && touchTimerTap < 0.3f) { // 100 ms gap to reduce false positives (bad touch sensors)
-                        doubleTap = true;
-                        touchTimerTap = 0.0f;
-                    } else
-                        touchTimerTap = 0.3f;
-                }
-            }
-        }
-
-    // set active touches as gamepad controls
-        getTouchDir(touch[zMove], Input::joy.L);
-        getTouchDir(touch[zLook], Input::joy.R);
-        if (touch[zButton] != ikNone && btn == bNone) {
-            getTouchButton(Input::touch[touch[zButton] - ikTouchA].pos);
-            touchSetDown(true);
-        }
-        if (doubleTap)
-            Input::setDown(ikJoyB, true);
+        //
     }
 
     void renderControl(const vec2 &pos, float size, bool active) {
@@ -144,7 +107,9 @@ struct UI {
     }
 
     void renderTouch() {
-        if (touchTimerVis <= 0.0f) return;
+        game->setupBinding();
+
+        if (Input::touchTimerVis <= 0.0f) return;
 
         Core::setDepthTest(false);
         Core::setBlending(bmAlpha);
@@ -157,15 +122,15 @@ struct UI {
         float offset = Core::height * 0.25f;
 
         vec2 pos = vec2(offset, Core::height - offset);
-        if (Input::down[touch[zMove]]) {
-            Input::Touch &t = Input::touch[touch[zMove] - ikTouchA];
-            renderControl(t.pos, btnRadius, true);
+        if (Input::down[Input::touchKey[Input::zMove]]) {
+            Input::Touch &t = Input::touch[Input::touchKey[Input::zMove] - ikTouchA];
+            renderControl(t.pos, Input::btnRadius, true);
             pos = t.start;
         }
-        renderControl(pos, btnRadius, false);
+        renderControl(pos, Input::btnRadius, false);
 
-        for (int i = bWeapon; i < bMAX; i++)
-            renderControl(btnPos[i], btnRadius, btn == i);
+        for (int i = Input::bWeapon; i < Input::bMAX; i++)
+            renderControl(Input::btnPos[i], Input::btnRadius, Input::btn == i);
 
         Core::setCulling(cfFront);
         Core::setBlending(bmNone);
diff --git a/src/utils.h b/src/utils.h
index b8241df..faf123e 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -78,12 +78,6 @@ inline void swap(T &a, T &b) {
     b = tmp;
 }
 
-float lerp(float a, float b, float t) {
-    if (t <= 0.0f) return a;
-    if (t >= 1.0f) return b;
-    return a + (b - a) * t; 
-}
-
 float clampAngle(float a) {
     return a < -PI ? a + PI2 : (a >= PI ? a - PI2 : a);
 }
@@ -113,6 +107,22 @@ float decrease(float delta, float &value, float &speed) {
         return 0.0f;
 }
 
+float hermite(float x) {
+    return x * x * (3.0f - 2.0f * x);
+}
+
+float lerp(float a, float b, float t) {
+    if (t <= 0.0f) return a;
+    if (t >= 1.0f) return b;
+    return a + (b - a) * t; 
+}
+
+float lerpAngle(float a, float b, float t) {
+    if (t <= 0.0f) return a;
+    if (t >= 1.0f) return b;
+    return a + shortAngle(a, b) * t; 
+}
+
 int nextPow2(uint32 x) {
     x--;
     x |= x >> 1;
@@ -421,8 +431,13 @@ struct mat4 {
     mat4(float fov, float aspect, float znear, float zfar) {
         float k = 1.0f / tanf(fov * 0.5f * DEG2RAD);
         identity();
-        e00 = k / aspect;
-        e11 = k;
+        if (aspect >= 1.0f) {
+            e00 = k / aspect;
+            e11 = k;
+        } else {
+            e00 = k;
+            e11 = k * aspect;
+        }
         e22 = (znear + zfar) / (znear - zfar);
         e33 = 0.0f;
         e32 = -1.0f;