I've updated the collision detection between points and the world with Scet's idea of only testing with the faces in the leaf containing the start position of the point. ZiggyWare's Simple Vector ...

In case you want to read how the full code would be, here it is: // Returns 1 if a collision is detected and 0 if the collision did not happen int PixelPerfectCollision(SPRITE sprite1, SPRITE sprite2) ...

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