Question

I need to detect long touch in the game the game I am trying to make.How can I do so?
Other problem I am facing is to limit simultaneous touches. i.e the sprite won’t jump if user touches more than two times immedeatly one after other.
Also is their a way by which I can add touch duration factor to the height of jump the sprite makes?

Thanks

Answer 1

how do you grab your touches? I always use the following methods:

- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event

- (void)ccTouchMoved:(UITouch *)touchx withEvent:(UIEvent *)event

- (void)ccTouchEnded:(UITouch *)touchx withEvent:(UIEvent *)event

And in these methods you may take total control over all touches. For example remember the time the touch started:

self.startTime = [NSDate date];

for an instance variable startTime, or to check if a touch belongs to a certain object:

 CGRectContainsPoint(self.rect, [self convertTouchToNodeSpaceAR:touch]);

This way you can easily implement your touch logic the way you like it…

A good way to do this is – I find – to define all the required variables within the object of the game, like…

@interface Enemy : CCSprite <CCTargetedTouchDelegate> {

    EnemyState state;
    NSInteger enemyID;
    NSDate *startTime;
    NSDate *endTime;

    UITouch *lastTouch; 

ADDED TO SHOW CONCRETE EXAMPLE CODE FOR ccTouchBegan:

   - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
    {
        D_DBG (@"ENEMY ID %i",self.enemyID);

//implement your logic if a touch for this enemy is allowed or not
        if (![self.delegate touchIsAllowed: enemyID touch: touch]) return NO;

//if the enemy is untouched, then may be touched
        if ((state == kEnemyStateUngrabbed) &&  (![self containsTouchLocation:touch] )) return NO;

        state = kEnemyStateGrabbed;
        self.startTime = [NSDate date];
        [self.delegate  informAboutEnemyStarted: self.enemyID startTime: self.startTime atPoint: self.position];
    return YES;
    }