File list (Check if you may need any files):
bird\demo\游戏代码和程序\demo.png
....\....\..............\demo.txt
....\....\..............\Project2.cfg
....\....\..............\Project2.dof
....\....\..............\Project2.dpr
....\....\..............\Project2.exe
....\....\..............\Project2.res
....\....\..............\Unit1.dcu
....\....\..............\Unit1.ddp
....\....\..............\Unit1.dfm
....\....\..............\Unit1.pas
....\Physics2D\delete.bat
....\.........\MSTimer.dcu
....\.........\MSTimer.pas
....\.........\Physics2D.inc
....\.........\UPhysics2D.dcu
....\.........\UPhysics2D.pas
....\.........\UPhysics2DControllers.dcu
....\.........\UPhysics2DControllers.pas
....\.........\UPhysics2DHelper.dcu
....\.........\UPhysics2DHelper.pas
....\.........\UPhysics2DPolygonTool.dcu
....\.........\UPhysics2DPolygonTool.pas
....\.........\UPhysics2DTypes.dcu
....\.........\UPhysics2DTypes.pas
....\demo\游戏代码和程序
....\demo
....\Physics2D
bird