Features:

• a real Scene Manager (called StateManager to avoid name clashes), allows multiple named scenes and jumping among them
• abstract State class, represents a scene basis, implements the render loop and physics update
• physics is decoupled from frame rate, takes care of under and oversampling, physics update rate is adjustable
• CameraTracker, smoothly moves the camera following a given target in the rd person perspective view
• many 3D movement, rotation and translation functions
• joystick support

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