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- blackhornet
- - Joined 28 May, 2012
  - 57 topics • 4,431 posts
- 1
- 10 Aug, 2019
- Quote
I've run into two issues:

1) how do I get blend modes to work? I have a drawing plugin, "world", supports-effect, pre-draw. I pass in sprites so I can suck out their textures, essentially for a custom particle mechanism. I've got things working nicely (spawming/movement), except I wan't the blend mode to be Additive. I've tried setting my plugin object to Additive, the layer to Additive, the base sprite to Additive, but nothing seems to make my quad call of the texture Additive.

2) how can I find out when an an object is destroyed? In C2 I had this:

this.myDestroyCallback = (function (self){

return function(inst){

self.onInstanceDestroyed(inst);

};

})(this);

this.runtime.addDestroyCallback(this.myDestroyCallback);

I can't find an equivalent.

Thanks.
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- Ashley Construct Team Founder
- Moderator
- - Joined 21 May, 2007
  - 669 topics • 30,357 posts
- 1
- 12 Aug, 2019
- Quote
1) how do I get blend modes to work?

The runtime sets the right blend mode before calling the Draw() method, so it should work automatically. If you change the blend mode in the draw method, you'll need to re-apply the one you want, or save the existing one at the start of the draw method and re-apply it at the end,

2) how can I find out when an an object is destroyed? In C2 I had this:

this.myDestroyCallback = (function (self){

return function(inst){

self.onInstanceDestroyed(inst);

};

})(this);

this.runtime.addDestroyCallback(this.myDestroyCallback);

I can't find an equivalent.

There's an "instancedestroy" event in the runtime. I added it to the docs here: https://www.construct.net/en/make-games/manuals/addon-sdk/runtime-reference/runtime