Thread: &reference operator folly

SeaCreature is a class (Contains XPos,YPos, and Sprite, where Sprite is an instance of a class with the listed values and more.)

PHP Code:


void SeaCreature::CheckPosition(const SeaCreature &enemy)
{
    SDL_Rect thisRect, enemyRect, colRect;
    
    thisRect.x = XPos;
    thisRect.y = YPos;
    thisRect.w = Sprite.SpriteWidth();
    thisRect.h = Sprite.SpriteHeight();

                   enemyRect.x = enemy.XPos;
    enemyRect.y = enemy.YPos;
    enemyRect.w = enemy.Sprite.SpriteWidth();
    enemyRect.h = enemy.Sprite.SpriteHeight();
                ...
}

the lines: 
    enemyRect.w = enemy.Sprite.SpriteWidth();
    enemyRect.h = enemy.Sprite.SpriteHeight();
gave me two compile-time errors. 


c:\usrsrc\cpp\cozSprite\SeaCreature.cpp(89) : error C2662: 'cozSprite::SpriteHeight' : cannot convert 'this' pointer from 'const cozSprite' to 'cozSprite &'


I need to be able to modify enemy (if at all possible, so i used the & symbol)

Thanks.. I've gotta get some rest

i've never seen any const values being passedinto a function through hook or crook. THat's an interesting practice, i guess it comes in handy when you are coding in a group and you don't want anyone to mess with the value of a variable that you passed through a function.