I am planning to make a little shooter game, but meet some problem. I draw a circle sprite and gave it 8 direction movement. And i create a sprite, when it collides with the shooter sprite, it gets bigger and disappear. It's some kind of effect but I plan to use event system to create it and learn the algorithm.
My event: when sprite1 collides with sprite 2, set xscale of sprite 1 to xscale of sprite1 + 2. (quality = 1）. By the way, not really understand the quality meaning =.=
It turns out like the sprite just increase it size, but not an effect like getting bigger.