CODEWITHSUNDEEP
objective-cloops
user3623891
user3623891

Reputation: 45

Run loop once per event

How do i run a loop once per event? Consider the following code:

-(void)didloadFromCCB {
    BOOL add = YES;
    if (bought_coins && add)
    {
        coins = coins + 5;
        add = NO;
    }
}

The problem with this code is that coins are added to the player every time the game restarts after the player bought the coins ONCE. I want the coins to be added ONLY when the player buys the coins each time and not every time the game loads from CCB. How should i change the code to make it work?

Upvotes: 0

Views: 126

Answers (1)

Paul R
Paul R

Reputation: 212979

You need to make add a static variable, so that its value persists across calls to didLoadFromCCB:

-(void)didloadFromCCB {
    static BOOL add = TRUE;
//  ^^^^^^
    if (bought_coins && add)
    {
        coins = coins + 5;
        add = FALSE;
    }
}

If you need to subsequently reset add (e.g. when coins are purchased again) then you could move it outside of the function, e.g.

static BOOL add = TRUE;

-(void)didloadFromCCB {
    if (bought_coins && add)
    {
        coins = coins + 5;
        add = FALSE;
    }
}

Upvotes: 1

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