A fast, easy to use, free, and community supported 2D game engine
Hi All,
is there an easy way to mask the particle system to only show within the width and height of another object instead of the whole scene?
I've tried making the particle emitter a child of a sprite, a layer, etc and it always seems to ignore any boundaries of its parent object. It would seem to me that the particles shouldn't move past them (I may be misunderstanding the way the particle system works though).
Thanks!
I looked in the ParticlesExamples and ParticleTest files that come with Cocos2d but didn't find any properties that seemed to affect the whole emitter, just ones that affected the particles themselves.
bladnman
Member
So far I'm looking into glScissor(rect); This is definitely not what you're looking for as it sounds like you want the mask to be around the curves of a font. But I thought I'd drop this here in case someone else wanders by looking for ANY way to clip a particle effect.
Note that I have created a very simple CCNode (subclassed) and added an emitter to it then added the below "visit" method override.
-(void) visit {
glPushMatrix();
glEnable(GL_SCISSOR_TEST);
glScissor(CGRectMake(0,0, 150,150););
[super visit];
glDisable(GL_SCISSOR_TEST);
glPopMatrix();
}Well, you could use a CCRenderTexture, attached to the main scene, and render first the mask setting the destination/surface alpha and color and then render the particles into it. If the CCRenderTexture is a screenSized texture you do not even need to do anything about scaling and positioning of the particle system. Of course you would have to choose a blending mode for the CCRenderTexture "sprite" and the particles system consistent with the mask. It should work...
Posted our code for this. I think it's exactly what you want :)
You must log in to post.
