Creating the Color Drop Casual Puzzle Game - The Essential Guide to Flash Games - page 362

Ending a level or the game
So now we have put blocks on the screen, removed them, and added blocks back to take their
place. The only thing left to do is to test to see if the level or the game has ended. We do this in
the GameStates.STATE_WAITING_FOR_INPUT game state by calling checkForEndLevel .
This function does two things. First, it checks to see if the levelScore is equal to or greater than
currentLevel.scoreThreshold . If so, the level has been completed. We play a sound, set the
nextGameState to GameStates.STATE_END_LEVEL , call fadeBlocks , and set the gameState to
GameStates.STATE_FADE_BLOCKS_WAIT . Recall that GameStates.STATE_FADE_BLOCKS_WAIT
continually checks to see if all the Block s have faded from the screen before continuing to the
gameState set in nextGameState .
If the level has not been finished, we check to see if plays has been exhausted. If so, the game is
over. We perform similar operations to the ones to end a level but, this time, to end the game. We
play a different sound; we set the nextGameState to GameStates.STATE_END_GAME , call
makeBlocksFall , and set the gameState to GameStates.STATE_FALL_BLOCKS_WAIT .
public function checkforEndLevel():void {
if (levelScore >= currentLevel.scoreThreshold) {
dispatchEvent( new CustomEventSound(CustomEventSound.PLAY_SOUND,
Main.SOUND_WIN,false,1,0,1));
nextGameState = GameStates.STATE_END_LEVEL;
fadeBlocks();
gameState = GameStates.STATE_FADE_BLOCKS_WAIT;
} else if (plays <= 0) {
nextGameState = GameStates.STATE_END_GAME;
dispatchEvent( new
CustomEventSound(CustomEventSound.PLAY_SOUND,Main.SOUND_LOSE,false,1,0,1));
makeBlocksFall()
gameState = GameStates.STATE_FALL_BLOCKS_WAIT;
}
}
The fadeBlocks function iterates through all the blocks in the board 2D array and sets every
Block to fade by calling the startFade function of each Block ; see Figure 8-7. The
Block.startFade function accepts a fadeValue (between 0 and 1) that will decrement the alpha
value for the Block over a series of frames. We send this as a random value so that the fadeout
does not appear completely uniform.
public function fadeBlocks():void {
for (var r:int = 0; r < board.length; r++) {
for (var c:int = 0; c < board[r].length; c++) {
tempBlock = board[r][c];
tempBlock.startFade((Math.random()*.9)+.1);
}
}
}