Add GetCollisionV

src/raylib.h

@@ -1327,6 +1327,7 @@ RLAPI bool CheckCollisionPointLine(Vector2 point, Vector2 p1, Vector2 p2, int th
 RLAPI bool CheckCollisionPointPoly(Vector2 point, const Vector2 *points, int pointCount);                // Check if point is within a polygon described by array of vertices
 RLAPI bool CheckCollisionLines(Vector2 startPos1, Vector2 endPos1, Vector2 startPos2, Vector2 endPos2, Vector2 *collisionPoint); // Check the collision between two lines defined by two points each, returns collision point by reference
 RLAPI Rectangle GetCollisionRec(Rectangle rec1, Rectangle rec2);                                         // Get collision rectangle for two rectangles collision
+RLAPI Vector2 GetCollisionV(Rectangle rec1, Rectangle rec2);                                             // Get collision vector for two rectangles collision
 
 //------------------------------------------------------------------------------------
 // Texture Loading and Drawing Functions (Module: textures)

src/rshapes.c

@@ -2463,6 +2463,41 @@ Rectangle GetCollisionRec(Rectangle rec1, Rectangle rec2)
     return overlap;
 }
 
+// Get collision vector for two rectangles collision
+Vector2 GetCollisionV(Rectangle rec1, Rectangle rec2)
+{
+    Vector2 result;
+    result.x = 0.0f;
+    result.y = 0.0f;
+
+    float ax = rec1.x + rec1.width  * 0.5f;
+    float ay = rec1.y + rec1.height * 0.5f;
+    float bx = rec2.x + rec2.width  * 0.5f;
+    float by = rec2.y + rec2.height * 0.5f;
+
+    float dx = bx - ax;
+    float dy = by - ay;
+
+    float hx = (rec1.width  * 0.5f) + (rec2.width  * 0.5f);
+    float hy = (rec1.height * 0.5f) + (rec2.height * 0.5f);
+
+    float px = hx - fabsf(dx);
+    if (px <= 0.0f) return result;
+
+    float py = hy - fabsf(dy);
+    if (py <= 0.0f) return result;
+
+    if (px < py) {
+        result.x = (dx > 0.0f ? 1.0f : -1.0f) * px;
+        result.y = 0.0f;
+    } else {
+        result.x = 0.0f;
+        result.y = (dy > 0.0f ? 1.0f : -1.0f) * py;
+    }
+
+    return result;
+}
+
 //----------------------------------------------------------------------------------
 // Module Internal Functions Definition
 //----------------------------------------------------------------------------------