diff --git a/bin/OpenLara.exe b/bin/OpenLara.exe
index 3d0e86e..a6d13b8 100644
Binary files a/bin/OpenLara.exe and b/bin/OpenLara.exe differ
diff --git a/src/camera.h b/src/camera.h
index ac12b13..a62663f 100644
--- a/src/camera.h
+++ b/src/camera.h
@@ -57,8 +57,10 @@ struct Camera : Controller {
 
     virtual void update() {
         int lookAt = -1;
-        if (owner->target > -1)     lookAt = owner->target;
         if (actTargetEntity > -1)   lookAt = actTargetEntity;
+        if (owner->target > -1)     lookAt = owner->target;
+
+        owner->viewTarget = lookAt;
 
         if (timer > 0.0f) {
             timer -= Core::deltaTime;
diff --git a/src/controller.h b/src/controller.h
index b998ed3..2dc7e0e 100644
--- a/src/controller.h
+++ b/src/controller.h
@@ -52,7 +52,9 @@ struct Controller {
             meshes[i] = model->mStart + i;
     }
 
-    void meshSwap(TR::Model *model, int mask) {
+    void meshSwap(TR::Model *model, int mask = 0xFFFFFFFF) {
+        if (!meshes) initMeshOverrides();
+
         for (int i = 0; i < model->mCount; i++) {
             int index = model->mStart + i;
             if (((1 << i) & mask) && level->meshOffsets[index])
diff --git a/src/format.h b/src/format.h
index 8f769ba..8f79e81 100644
--- a/src/format.h
+++ b/src/format.h
@@ -9,6 +9,10 @@
 
 namespace TR {
 
+    enum {
+        FLOOR_BLOCK = -127,
+    };
+
     enum {
         ANIM_CMD_NONE       ,
         ANIM_CMD_OFFSET     ,
@@ -387,6 +391,7 @@ namespace TR {
             PUZZLE_4                 = 113,      // sprite
 
             HOLE_PUZZLE              = 118,
+            HOLE_PUZZLE_SET          = 122,
 
             PICKUP                   = 126,      // sprite
 
@@ -766,6 +771,7 @@ namespace TR {
 
         struct {
             Model *muzzleFlash;
+            Model *puzzleSet;
         } extra;
 
         Level(const char *name, bool demo) {
@@ -899,7 +905,8 @@ namespace TR {
             memset(&extra, 0, sizeof(extra));
             for (int i = 0; i < modelsCount; i++)
                 switch (models[i].type) {
-                    case Entity::MUZZLE_FLASH : extra.muzzleFlash = &models[i]; break;
+                    case Entity::MUZZLE_FLASH    : extra.muzzleFlash = &models[i]; break;
+                    case Entity::HOLE_PUZZLE_SET : extra.puzzleSet   = &models[i]; break;
                     default : ;
                 }
         }
@@ -1032,6 +1039,9 @@ namespace TR {
             info.trigger      = Trigger::ACTIVATE;
             info.trigCmdCount = 0;
 
+            if (s.floor == -127) 
+                return;
+
             Room::Sector *sBelow = &s;
             while (sBelow->roomBelow != 0xFF) sBelow = &getSector(sBelow->roomBelow, x, z, dx, dz);
             info.floor = 256 * sBelow->floor;
@@ -1072,7 +1082,7 @@ namespace TR {
                             if (ey >= y - 128 && ey < info.floor)
                                 info.floor = ey;
                             if (ey  < y - 128 && ey > info.ceiling)
-                                info.ceiling = ey + (e.type == Entity::TRAP_FLOOR ? 256 : 0);
+                                info.ceiling = ey + (e.type == Entity::TRAP_FLOOR ? 0 : 256);
                             break;
                         }
 
diff --git a/src/lara.h b/src/lara.h
index 59f248b..f3468eb 100644
--- a/src/lara.h
+++ b/src/lara.h
@@ -24,6 +24,7 @@
 
 #define PICKUP_FRAME_GROUND     40
 #define PICKUP_FRAME_UNDERWATER 16
+#define PUZZLE_FRAME            80
 
 #define MAX_TRIGGER_ACTIONS 64
 
@@ -193,8 +194,9 @@ struct Lara : Character {
     
     Inventory inventory;
     int lastPickUp;
+    int viewTarget;
 
-    Lara(TR::Level *level, int entity, bool home) : Character(level, entity, 1000), home(home), wpnCurrent(Weapon::EMPTY), wpnNext(Weapon::EMPTY), chestOffset(pos) {
+    Lara(TR::Level *level, int entity, bool home) : Character(level, entity, 1000), home(home), wpnCurrent(Weapon::EMPTY), wpnNext(Weapon::EMPTY), chestOffset(pos), viewTarget(-1) {
         animation.setAnim(ANIM_STAND);
         getEntity().flags.active = 1;
         initMeshOverrides();
@@ -264,12 +266,12 @@ struct Lara : Character {
         pos = vec3(31390, -2048, 33472);
         angle = vec3(0.0f, 0.0f, 0.0f);
         getEntity().room = 63;
-        
+        */
     // level 2 (trap door)
         pos = vec3(21987, -1024, 29144);
         angle = vec3(0.0f, PI * 3.0f * 0.5f, 0.0f);
         getEntity().room = 61;
-        
+        /*
     // level 3a
         pos = vec3(41015, 3584, 34494);
         angle = vec3(0.0f, -PI, 0.0f);
@@ -376,6 +378,15 @@ struct Lara : Character {
         return wpnCurrent == Weapon::EMPTY || arms[0].anim == Weapon::Anim::NONE;
     }
 
+    bool canLookAt() {
+        return (stand == STAND_GROUND || stand == STAND_SLIDE)  
+               && state != STATE_REACH
+               && state != STATE_PUSH_BLOCK
+               && state != STATE_PULL_BLOCK
+               && state != STATE_PUSH_PULL_READY
+               && state != STATE_PICK_UP;
+    }
+
     bool canDrawWeapon() {
         return wpnCurrent != Weapon::EMPTY
                && emptyHands()
@@ -713,7 +724,8 @@ struct Lara : Character {
         } else
             animation.overrideMask &= ~(BODY_ARM_R | BODY_ARM_L);
 
-        lookAt(target);
+
+        lookAt(viewTarget);
         
         if (wpnCurrent == Weapon::SHOTGUN)
             aimShotgun();
@@ -725,15 +737,16 @@ struct Lara : Character {
         float speed = 8.0f * Core::deltaTime;
         quat rot;
 
+        bool can = canLookAt();
         // chest
-        if ((stand == STAND_GROUND || stand == STAND_SLIDE) && aim(target, 7, vec4(-PI * 0.4f, PI * 0.4f, -PI * 0.9f, PI * 0.9f), rot))
+        if (can && aim(target, 7, vec4(-PI * 0.4f, PI * 0.4f, -PI * 0.9f, PI * 0.9f), rot))
             rotChest = rotChest.slerp(quat(0, 0, 0, 1).slerp(rot, 0.5f), speed);
         else 
             rotChest = rotChest.slerp(quat(0, 0, 0, 1), speed);
         animation.overrides[7] = rotChest * animation.overrides[7];
 
         // head
-        if (aim(target, 14, vec4(-PI * 0.25f, PI * 0.25f, -PI * 0.5f, PI * 0.5f), rot))
+        if (can && aim(target, 14, vec4(-PI * 0.25f, PI * 0.25f, -PI * 0.5f, PI * 0.5f), rot))
             rotHead = rotHead.slerp(rot, speed);
         else
             rotHead = rotHead.slerp(quat(0, 0, 0, 1), speed);
@@ -941,15 +954,21 @@ struct Lara : Character {
                     return;
                 break;
             case TR::Level::Trigger::KEY :
-                actionState = STATE_USE_KEY;
+                if (level->entities[info.trigCmd[0].args].flags.active)
+                    return;
+                actionState = level->entities[info.trigCmd[0].args].type == TR::Entity::HOLE_KEY ? STATE_USE_KEY : STATE_USE_PUZZLE;
                 if (isActive || !isPressed(ACTION) || state == actionState || !emptyHands())   // TODO: STATE_USE_PUZZLE
                     return;
                 if (!checkAngle(level->entities[info.trigCmd[0].args].rotation))
                     return;
-                if (animation.canSetState(actionState) && !useItem(TR::Entity::NONE, level->entities[info.trigCmd[0].args].type)) {
-                    playSound(TR::SND_NO, pos, Sound::PAN);
+                if (animation.canSetState(actionState)) {
+                    if (false) { //!useItem(TR::Entity::NONE, level->entities[info.trigCmd[0].args].type)) {
+                        playSound(TR::SND_NO, pos, Sound::PAN);
+                        return;
+                    }
+                } else
                     return;
-                }
+                lastPickUp = info.trigCmd[0].args; // TODO: it's not pickup, it's key/puzzle hole
                 break;
             case TR::Level::Trigger::PICKUP :
                 if (!isActive)  // check if item is not picked up
@@ -964,6 +983,9 @@ struct Lara : Character {
         if (!animation.setState(actionState)) return;
 
         if (info.trigger == TR::Level::Trigger::SWITCH || info.trigger == TR::Level::Trigger::KEY) {
+            if (info.trigger == TR::Level::Trigger::KEY)
+                level->entities[info.trigCmd[0].args].flags.active = true;
+
             TR::Entity &p = level->entities[info.trigCmd[0].args];
             angle.y = p.rotation;
             angle.x = 0;
@@ -1370,14 +1392,23 @@ struct Lara : Character {
     }
 
     virtual void doCustomCommand(int curFrame, int prevFrame) {
-        if (state == STATE_PICK_UP) {
-            TR::Entity &item = level->entities[lastPickUp];
-            if (!item.flags.invisible) {
-                int pickupFrame = stand == STAND_GROUND ? PICKUP_FRAME_GROUND : PICKUP_FRAME_UNDERWATER;                
-                if (animation.isFrameActive(pickupFrame)) {
-                    item.flags.invisible = true;
-                    inventory.add(item.type, 1);
+        switch (state) {
+            case STATE_PICK_UP : {
+                TR::Entity &item = level->entities[lastPickUp];
+                if (!item.flags.invisible) {
+                    int pickupFrame = stand == STAND_GROUND ? PICKUP_FRAME_GROUND : PICKUP_FRAME_UNDERWATER;                
+                    if (animation.isFrameActive(pickupFrame)) {
+                        item.flags.invisible = true;
+                        inventory.add(item.type, 1);
+                    }
                 }
+                break;
+            }
+            case STATE_USE_PUZZLE : {
+                TR::Entity &item = level->entities[lastPickUp];
+                if (animation.isFrameActive(PUZZLE_FRAME))
+                    ((Controller*)item.controller)->meshSwap(level->extra.puzzleSet);
+                break;
             }
         }
     }
diff --git a/src/level.h b/src/level.h
index b65eb4b..3f086e0 100644
--- a/src/level.h
+++ b/src/level.h
@@ -385,7 +385,7 @@ struct Level {
     }
 
     void renderEntity(const TR::Entity &entity) {
-    //    if (entity.room != lara->getRoomIndex()) return;
+        //if (entity.room != lara->getRoomIndex()) return;
         if (entity.type == TR::Entity::NONE) return;
         ASSERT(entity.controller);
 
@@ -495,7 +495,7 @@ struct Level {
         //    Debug::Level::portals(level);
         //    Debug::Level::meshes(level);
             Debug::Level::entities(level);
-      //  Debug::Level::info(level, lara->getEntity(), lara->animation);
+        Debug::Level::info(level, lara->getEntity(), lara->animation);
         Debug::end();
     #endif
     }
diff --git a/src/sound.h b/src/sound.h
index 761d67c..c9e26c7 100644
--- a/src/sound.h
+++ b/src/sound.h
@@ -196,10 +196,9 @@ namespace Sound {
         OGG(Stream *stream, int channels) : Decoder(stream, channels), size(stream->size), pos(0) {
             buffer = new char[size]; // TODO: file streaming
             stream->raw(buffer, size);
-            int error;
             alloc.alloc_buffer_length_in_bytes = 256 * 1024;
             alloc.alloc_buffer = new char[alloc.alloc_buffer_length_in_bytes];
-            ogg = stb_vorbis_open_memory((unsigned char*)buffer, size, &error, &alloc);
+            ogg = stb_vorbis_open_memory((unsigned char*)buffer, size, NULL, &alloc);
             stb_vorbis_info info = stb_vorbis_get_info(ogg);
             channels = info.channels;
         }
@@ -220,7 +219,10 @@ namespace Sound {
             return i;
         }
 
-        // TODO: replay
+        virtual void replay() {
+            stb_vorbis_close(ogg);
+            ogg = stb_vorbis_open_memory((unsigned char*)buffer, size, NULL, &alloc);
+        }
     };
 #endif
 
@@ -321,8 +323,11 @@ namespace Sound {
             while (i < count) {
                 int res = decoder->decode(&frames[i], count - i);
                 if (res == 0) {
-                    if (i == 0) isPlaying = false;
-                    break;
+                    if (!(flags & Flags::LOOP)) {
+                        if (i == 0) isPlaying = false;
+                        break;
+                    } else
+                        decoder->replay();
                 }
                 i += res;
             }
diff --git a/src/trigger.h b/src/trigger.h
index 71ffb42..7fec58d 100644
--- a/src/trigger.h
+++ b/src/trigger.h
@@ -51,7 +51,7 @@ struct Trigger : Controller {
             }
         }
 
-        if (!inState())
+        if (!inState() && entity.type != TR::Entity::HOLE_KEY && entity.type != TR::Entity::HOLE_PUZZLE)
             animation.setState(state != baseState ? baseState : (entity.type == TR::Entity::TRAP_BLADE ? 2 : (baseState ^ 1)));
 
         updateAnimation(true);
@@ -179,8 +179,45 @@ struct Block : Controller {
 
 
 struct Door : Trigger {
+    int8 *floor[2], orig[2];
 
-    Door(TR::Level *level, int entity) : Trigger(level, entity, true) {}
+    Door(TR::Level *level, int entity) : Trigger(level, entity, true) {
+        TR::Entity &e = getEntity();
+        TR::Level::FloorInfo info;
+        vec3 p = pos - getDir() * 1024.0f;
+
+        level->getFloorInfo(e.room, (int)p.x, (int)p.y, (int)p.z, info);
+        int dx, dz;
+        TR::Room::Sector *s = &level->getSector(e.room, (int)p.x, (int)p.z, dx, dz);
+
+        orig[0] = *(floor[0] = &s->floor);
+
+        if (info.roomNext != 0xFF) {
+            s = &level->getSector(info.roomNext, e.x, e.z, dx, dz);
+            orig[1] = *(floor[1] = &s->floor);
+        } else
+            floor[1] = NULL;
+
+        updateBlock();
+    }
+
+    void updateBlock() {
+        int8 v[2];
+        if (getEntity().flags.active) {
+            v[0] = orig[0];
+            v[1] = orig[1];
+        } else
+            v[0] = v[1] = TR::FLOOR_BLOCK;
+
+        if (floor[0]) *floor[0] = v[0];
+        if (floor[1]) *floor[1] = v[1];
+    }
+
+    virtual bool activate(ActionCommand *cmd) {
+        bool res = Trigger::activate(cmd);
+        updateBlock();
+        return res;
+    }
 };
 
 struct DoorFloor : Trigger {
@@ -235,7 +272,7 @@ struct TrapFloor : Trigger {
                 e.room = info.roomBelow;
 
             if (pos.y > info.floor) {
-                pos.y = info.floor;
+                pos.y = (float)info.floor;
                 animation.setState(STATE_DOWN);
             }
             updateEntity();