Buttons in one form or another are used in most games. It is easy to implement a simple button solution using Cocos2d but creating one that supports multiple simultaneous button touches is more difficult. In this recipe, we will implement a simple but effective solution to this problem.
//TouchableSprite.h
@interface TouchableSprite : CCSprite
{
@public
bool pressed; //Is this sprite pressed
NSUInteger touchHash; //Used to identify individual touches
}
@end
@implementation TouchableSprite
- (bool)checkTouchWithPoint:(CGPoint)point {
if(pointIsInRect(point, [self rect])){
return YES;
}else{
return NO;
}
}
- (CGRect) rect {
//We set our scale mod to make sprite easier to press.
//This also lets us press 2 sprites with 1 touch if they are sufficiently close.
float scaleMod = 1.5f;
float w ...