By using a set of simple scripts, you can easily create two types of shockwaves on any surfaces, sprites or on fullscreen, and customize its appearance & behavior without interact with shader uniforms by yourself.
How to use
1) First of all, you'll need to run the initialization script [ sw_init() ] once, and this can be done from anywhere of your codes.
2) Then, you decide a target to apply the shader to - using [ sw_start() ]. The target can be either a sprite, surface or just fullscreen.
draw_surface(surf_main, 0, 0);
Notice that you'll have to put a [ sw_end() ] at the end. For a more detailed explanation, see in the [ sw_start() ] script.
3) To this part, all the preparations are completed. Now you can just use [ sw_linear_create() ] or [ sw_sphere_create() ] at anytime you want, from anywhere of your codes, to create a shockwave!
See in the script for its detailed explanation.
Version 1.1.1. Published December 31, 2018
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Low performance / bad optimisation
The assets itself works correctly and is really easy to setup. Unfortunately using this script or even just running the demo will drastically use most of your GPU. Running on a GTX 1060 6gb here, the demo were using 88% to 91% of my GPU. Will rate to 5 stars once an optimisation work will get done.
This review was left for a previous version of this asset.
Thank you for your feedback!
I've spent time to make the shader more reliable now in version 1.1.1.
Please try it out and feel free to send more feedbacks to me.