optimize (#4065)

Author: kai-z99

src/rshapes.c

@@ -2233,9 +2233,10 @@ bool CheckCollisionCircles(Vector2 center1, float radius1, Vector2 center2, floa
     float dx = center2.x - center1.x;      // X distance between centers
     float dy = center2.y - center1.y;      // Y distance between centers
 
-    float distance = sqrtf(dx*dx + dy*dy); // Distance between centers
+    float distanceSquared = dx * dx + dy * dy; // Distance between centers squared
+    float radiusSum = radius1 + radius2;
 
-    if (distance <= (radius1 + radius2)) collision = true;
+    collision = (distanceSquared <= (radiusSum * radiusSum));
 
     return collision;
 }