tetris logic

gistfile1.txt

A game has 7 types of Tetrimino: I, L, J, Z, S, O, T.
 show board that contains 20 * 10 Blocks.
 show the current moving piece that is controlled by the player.
 show the future position where the current piece will drop
 show the next piece, and the piece that is held
 show the score, level, and line
when the game state is GAME_OVER or PAUSE
 press enter to start the game
when the game state is START
 for every tick (0.8 - (level - 1) * 0.007) ** (level - 1) second
 the current piece moves down
when the piece move down
 if the piece can move
 move the current piece one block down
 if the piece is blocked
 add the tick to the current tick time of the piece
 if tick time > 0.4 sec or total time > 4 sec
 add the current piece to the board
 clear the full line
 add the line cleared to the total lines
 add score by [40, 100, 300, 1200] for each line cleared
 add the level for every 20 lines cleared
 play the clear animation for 0.4 sec
 create a new current piece from the next piece
 create a new next piece
 when the piece move left
 if the piece can move
 move the current piece one block left
 reset current piece tick time
 when the piece move right
 if the piece can move
 move the current piece one block right
 reset current piece tick time
 when piece hold
 if the holding piece exists
 switch the holding piece with the current piece
 lock the piece and hold until the next current piece
 if the holding piece not exists
 put the current piece to hold
 create the new current piece
 create the new next piece
 when piece drop
 move the piece to the bottom of the board
 play the shaken animation
 add the current piece to the board
 clear the full line
 add the line cleared to the total lines
 add score by [40, 100, 300, 1200] for each line cleared
 add the level for every 20 lines cleared
 play the clear animation for 0.4 sec
 create a new current piece from the next piece
 create a new next piece
 when piece rotate
 move the current piece clockwise/counterclockwise by pivot
 if the piece is blocked
 try to move one block down
 or try to move one block right
 or try to move one block left
 or try to move two blocks up
 or cancel rotate
 when the current piece is blocked at the top
 save the game state to Game Over
 when the arrow key ArrowLeft, ArrowDown, ArrowRight is pressed
 overwrite original input
 when the key pressed repeat the key after 0.15s in 0.05s interval
 when the key released, stop the repeat key