A fast, easy to use, free, and community supported 2D game engine
Got it working... Just had to change the - (void) draw method inside RepeatableLayer.m to this:
- (void)draw {
glEnable(GL_TEXTURE_2D);
glColor4ub( color_.r, color_.g, color_.b, opacity_);
//Adjust the texture matrix
glMatrixMode(GL_TEXTURE);
glPushMatrix();
glLoadIdentity();
//We are just doing horizontal scrolling here so only adjusting x
glTranslatef(texOffset.x/self.contentSize.width, 0, 0);
//This is for scrolling on the Y axis
//glTranslatef(0, -texOffset.y/self.contentSize.height, 0);
//Draw the texture
[texture_ drawAtPoint:CGPointZero];
//Restore texture matrix and switch back to modelview matrix
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glColor4ub( 255, 255, 255, 255);
}I found the solution
here http://www.cocos2d-iphone.org/forum/topic/4883
change children to children_
in 0.99 all ivars have a following underscore
alexsavu
Member
Hello
Did anyone get to the bottom of this. My version of the code would put the scrolling background on top of everything I have in the game so far. Can't seem to make it work in any way. I've talked with rolando and he said it may have to do something with the gl modes in the draw method and that I have to update them for my current cocos2d version. I'm using 0.99.5. Anyone has this working for this version? Please please help. Thanks
Tapouillo
Member
here is what i did to have a repeatable layer, based on RepeatableLayer.m. it works with cocos2d 1.xx rc.
my repeatable layer is initialized with the gl_repeat parameters (like in the gffparallax classes), a rect size of (0,0,wins.width,wins.height) and texture size a of 128x128
in RepeatableLayer.m : replace the (void)draw {} by the draw function in cocos2d CCSprite.m.
you can run the project at this point, and see the texture repeated all over the screen, now we have to translate it ...
in the draw function, just before the glDrawArrays do this:
glMatrixMode(GL_TEXTURE); //switch to the texture matrix
glPushMatrix();
glTranslatef(youroffset.x,youroffsety,0); //translate the texture
glMatrixMode(GL_MODELVIEW); //go back to modelview for drawing
glDrawArrays(.........); //the glDrawArrays...
//and add this after:
glMatrixMode(GL_TEXTURE); //goback to the texture matrix
glPopMatrix(); //and pop the pushed one
glMatrixMode(GL_MODELVIEW); //go back again to the default modelview...
last step is important because we need to restore the texture matrix or it will up side down all the other textures after drawing your background.
i'm not an opengl expert, maybe there is points i am missing or doing badly, please feel free to improve the code.
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