#3 fix flash lights after death, fix check hit (now using OBB and spheres instead of AABB)

src/controller.h

@@ -254,16 +254,17 @@ struct Controller {
         return animation.getBoundingBox(vec3(0, 0, 0), oriented ? getEntity().rotation.value / 0x4000 : 0);
     }
 
-    void getSpheres(Sphere *spheres) {
+    void getSpheres(Sphere *spheres, int &count) {
         TR::Model *m = getModel();
         Basis basis(getMatrix());
 
+        count = 0;
         for (int i = 0; i < m->mCount; i++) {
             TR::Mesh &aMesh = level->meshes[level->meshOffsets[m->mStart + i]];
+            if (aMesh.radius <= 0) continue;
             vec3 center = animation.getJoints(basis, i, true) * aMesh.center;
-            spheres[i] = Sphere(center, aMesh.radius);
+            spheres[count++] = Sphere(center, aMesh.radius);
         }
-
     }
 
     int collide(Controller *controller, bool checkBoxes = true) {
@@ -280,18 +281,18 @@ struct Controller {
 
         Sphere aSpheres[34];
         Sphere bSpheres[34];
+        int aCount, bCount;
 
-        getSpheres(aSpheres);
-        controller->getSpheres(bSpheres);
+        getSpheres(aSpheres, aCount);
+        controller->getSpheres(bSpheres, bCount);
 
         int mask = 0;
-        for (int i = 0; i < a->mCount; i++) 
-            if (aSpheres[i].radius > 0.0f)
-                for (int j = 0; j < b->mCount; j++)
-                    if (bSpheres[j].radius > 0.0f && bSpheres[j].intersect(aSpheres[i])) {
-                        mask |= (1 << i);
-                        break;
-                    }
+        for (int i = 0; i < aCount; i++) 
+            for (int j = 0; j < bCount; j++)
+                if (bSpheres[j].intersect(aSpheres[i])) {
+                    mask |= (1 << i);
+                    break;
+                }
         return mask;
     }
 

src/debug.h

@@ -498,9 +498,8 @@ namespace Debug {
 
                 bool bboxIntersect = false;
 
-                Sphere spheres[34];
                 ASSERT(m->mCount <= 34);
-                controller->getSpheres(spheres);
+
                 int mask = 0;
                 for (int j = 0; j < level.entitiesCount; j++) {
                     TR::Entity &t = level.entities[j];
@@ -515,8 +514,11 @@ namespace Debug {
                 Box box = controller->getBoundingBoxLocal();
                 Debug::Draw::box(matrix, box.min, box.max, bboxIntersect ? vec4(1, 0, 0, 1): vec4(1));
 
+                Sphere spheres[34];
+                int count;
+                controller->getSpheres(spheres, count);
 
-                for (int joint = 0; joint < m->mCount; joint++) {
+                for (int joint = 0; joint < count; joint++) {
                     Sphere &sphere = spheres[joint];
                     Debug::Draw::sphere(sphere.center, sphere.radius, (mask & (1 << joint)) ? vec4(1, 0, 0, 0.5f) : vec4(0, 1, 1, 0.5f));
                     /*

src/lara.h

@@ -1088,15 +1088,26 @@ struct Lara : Character {
 
     bool checkHit(int target, const vec3 &from, const vec3 &to, vec3 &point) {
         TR::Entity &e = level->entities[target];
-        Box box = ((Controller*)e.controller)->getBoundingBox();
+        Controller *controller = (Controller*)e.controller;
+
+        Box box = controller->getBoundingBoxLocal();
+        mat4 m  = controller->getMatrix();
+
         float t;
-        vec3 v = (to - from);
-        vec3 dir = v.normal();
-        if (box.intersect(from, dir, t) && v.length() > t) {
-            point = from + dir * t;
-            return true;
-        } else
-            return false;
+        vec3 v = to - from;
+        
+        if (box.intersect(m, from, v, t)) {
+            v = v.normal();
+            Sphere spheres[34];
+            int count;
+            controller->getSpheres(spheres, count);
+            for (int i = 0; i < count; i++) 
+                if (spheres[i].intersect(from, v, t)) {
+                    point = from + v * t;
+                    return true;
+                }
+        }
+        return false;
     }
 
     virtual void cmdEmpty() {
@@ -1145,6 +1156,9 @@ struct Lara : Character {
 
             animation.setAnim(level->models[TR::MODEL_LARA_SPEC].animation + 1);
         }
+
+        if (health <= 0)
+            Core::lightColor[1 + 0] = Core::lightColor[1 + 1] = vec4(0, 0, 0, 1);
     };
 
     bool waterOut() {

src/utils.h

@@ -868,19 +868,24 @@ struct Box {
     }
 
     bool intersect(const vec3 &rayPos, const vec3 &rayDir, float &t) const {
-        float t1 = INF, t0 = -t1;
+        float tMax = INF, tMin = -tMax;
 
         for (int i = 0; i < 3; i++) 
             if (rayDir[i] != 0) {
                 float lo = (min[i] - rayPos[i]) / rayDir[i];
                 float hi = (max[i] - rayPos[i]) / rayDir[i];
-                t0 = ::max(t0, ::min(lo, hi));
-                t1 = ::min(t1, ::max(lo, hi));
+                tMin = ::max(tMin, ::min(lo, hi));
+                tMax = ::min(tMax, ::max(lo, hi));
             } else
                 if (rayPos[i] < min[i] || rayPos[i] > max[i])
                     return false;
-        t = t0;
-        return (t0 <= t1) && (t1 > 0);
+        t = tMin;
+        return (tMin <= tMax) && (tMax > 0.0f);
+    }
+
+    bool intersect(const mat4 &matrix, const vec3 &rayPos, const vec3 &rayDir, float &t) const {
+        mat4 mInv = matrix.inverse();
+        return intersect(mInv * rayPos, (mInv * vec4(rayDir, 0)).xyz, t);
     }
 };
 
@@ -891,11 +896,30 @@ struct Sphere {
     Sphere() {}
     Sphere(const vec3 &center, float radius) : center(center), radius(radius) {}
 
-    bool intersect(const Sphere &s) {
+    bool intersect(const Sphere &s) const {
         float d = (center - s.center).length2();
         float r = (radius + s.radius);
         return d < r * r;
     }
+
+    bool intersect(const vec3 &rayPos, const vec3 &rayDir, float &t) const {
+        vec3 v = rayPos - center;
+        float h = -v.dot(rayDir);
+        float d = h * h + radius * radius - v.length2();
+
+        if (d > 0.0f) {
+            d = sqrtf(d);
+            float tMin = h - d;
+            float tMax = h + d;
+            if (tMax > 0.0f) {
+                if (tMin < 0.0f)
+                    tMin = 0.0f;
+                t = tMin;
+                return true;
+            }
+        }
+        return false;
+    }
 };
 
 struct Stream {