Added some functions (incomplete)

src/models.c

@@ -1336,7 +1336,17 @@ bool CheckCollisionBoxSphere(Vector3 minBBox, Vector3 maxBBox, Vector3 centerSph
     return collision;
 }
 
-// Detect collision between ray and box
+// Detect collision between ray and sphere
+bool CheckCollisionRaySphere(Ray ray, Vector3 spherePosition, float sphereRadius)
+{
+    bool collision = false;
+    
+    // TODO: implement collision...
+    
+    return collision;
+}
+
+// Detect collision between ray and bounding box
 bool CheckCollisionRayBox(Ray ray, Vector3 minBBox, Vector3 maxBBox)
 {
     bool collision = false;
@@ -1359,6 +1369,32 @@ bool CheckCollisionRayBox(Ray ray, Vector3 minBBox, Vector3 maxBBox)
 // TODO: Useful function to check collision area?
 //BoundingBox GetCollisionArea(BoundingBox box1, BoundingBox box2)
 
+// Calculate mesh bounding box limits
+BoundingBox CalculateBoundingBox(Mesh mesh)
+{
+    // Get min and max vertex to construct bounds (AABB)
+    Vector3 minVertex = mesh.vertices[0]; 
+    Vector3 maxVertex = mesh.vertices[0];
+
+    for (int i = 1; i < mesh.vertexCount; i++)
+    {
+		// TODO: Compare min and max with previous vertex
+        //minVertex = Vector3.Min(minVertex, mesh.vertices[i]);
+        //maxVertex = Vector3.Max(maxVertex, mesh.vertices[i]);
+    }
+
+    // NOTE: For OBB, transform mesh by model transform matrix
+    //minVertex = VectorTransform(meshMin, mesh.transform);
+    //maxVertex = VectorTransform(meshMax, mesh.transform);
+ 
+    // Create the bounding box
+    BoundingBox box;
+    box.min = minVertex;
+    box.max = maxVertex;
+    
+    return box;
+}
+
 // Detect and resolve cubicmap collisions
 // NOTE: player position (or camera) is modified inside this function
 Vector3 ResolveCollisionCubicmap(Image cubicmap, Vector3 mapPosition, Vector3 *playerPosition, float radius)