midp_ketris

说明：  MIDP实现的 俄罗斯方块游戏源码，含游戏画布和封装下坠物对象及其操作类，重画线程,该线程实现游戏画布重画机制，用2个变量是用来控制游戏速度(The source code of the Tetris game implemented by MIDP, including the game canvas and the encapsulated falling object and its operation class, redraw thread, the thread implements the game canvas redraw mechanism, and uses 2 variables to control the game speed)