Question

I’m trying to compile some example code from the Cocos2d for iPhone 0.99 Beginner’s Guide.:

-(void)draw
{
    if(isSelected)
    {
        [self.mySprite setOpacity:100];
        glColor4f(255 / 255.0f, 0 / 255.0f, 0 / 255.0f, 255 / 255.0f);
        glPointSize( 30.0 );
        ccDrawPoint( self.mySprite.position);
    }
    [super draw];
}

Apart from this not actually drawing a rectangular highlight on top of the sprite when isSelected = YES, the gl functions are also giving me warnings:

• Implicit declaration of function ‘glPointSize’ is invalid in C99
• Implicit declaration of function ‘glColor4f’ is invalid in C99

Answer 1

Are you using Cocos2D 2.x? Try ccDrawColor4F instead of glColor4f and ccPointSize instead of glPointSize.