摘要:
如何自动模拟小球匀速运动,在碰到边界的时候,无能量损失继续运动。背景和小球加载处理完毕。小球运动坐标。void MyPaint(HDC hdc){SelectObject(bufdc,bg);BitBlt(mdc,0,0,640,480,bufdc,0,0,SRCCOPY);SelectObject(bufdc,ball);BitBlt(mdc,x,y,60,91,bufdc,60,0,SRCAND);BitBlt(mdc,x,y,60,91,bufdc,0,0,SRCPAINT);BitBlt(hdc,0,0,640,480,mdc,0,0,SRCCOPY);x+=vx;if (x=rect
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