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我目前正在Objective-C的Cocos2D Mac遊戲中工作。Objective-C ccKeyDown播放器移動
我已經得到了移動工作,但我有一個問題..
我用這個代碼將我的播放器,它是一隻蒼蠅所以它需要在各個方向自由移動。
鍵盤事件:
- (void)ccKeyDown:(NSEvent*)keyDownEvent
{
// Get pressed key (code)
NSString * character = [keyDownEvent characters];
unichar keyCode = [character characterAtIndex: 0];
// Player movement
if (keyCode == 119) {
playerMoveUp = TRUE;
} else if (keyCode == 115) {
playerMoveDown = TRUE;
}
if (keyCode == 100) {
playerMoveLeft = TRUE;
} else if (keyCode == 97) {
playerMoveRight = TRUE;
}
}
- (void)ccKeyUp:(NSEvent*)keyUpEvent
{
// Get pressed key (code)
NSString * character = [keyUpEvent characters];
unichar keyCode = [character characterAtIndex: 0];
// Player movement
if (keyCode == 119) {
playerMoveUp = FALSE;
} else if (keyCode == 115) {
playerMoveDown = FALSE;
}
if (keyCode == 100) {
playerMoveLeft = FALSE;
} else if (keyCode == 97) {
playerMoveRight = FALSE;
}
}
Gametime循環:
-(void) tick: (ccTime) dt
{
// Get player current position
NSInteger playerPositionX = player.position.x;
NSInteger playerPositionY = player.position.y;
// Player movement
if (playerMoveUp == TRUE) {
player.position = ccp(playerPositionX, playerPositionY + 1);
}
if (playerMoveDown == TRUE) {
player.position = ccp(playerPositionX, playerPositionY - 1);
}
if (playerMoveLeft == TRUE) {
player.position = ccp(playerPositionX + 1, playerPositionY);
}
if (playerMoveRight == TRUE) {
player.position = ccp(playerPositionX - 1, playerPositionY);
}
}
我的問題是,當移動離開了我的球員是不可能添加上鍵的同時,讓玩家將向左和向上移動。達到此目的的最佳方法是什麼?