44 lines
1.9 KiB
Plaintext
44 lines
1.9 KiB
Plaintext
// original wind shader from https://github.com/Maujoe/godot-simple-wind-shader-2d/tree/master/assets/maujoe.simple_wind_shader_2d
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// original script modified by HungryProton so that the assets are moving differently : https://pastebin.com/VL3AfV8D
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//
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// speed - The speed of the wind movement.
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// minStrength - The minimal strength of the wind movement.
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// maxStrength - The maximal strength of the wind movement.
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// strengthScale - Scalefactor for the wind strength.
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// interval - The time between minimal and maximal strength changes.
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// detail - The detail (number of waves) of the wind movement.
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// distortion - The strength of geometry distortion.
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// heightOffset - The height where the wind begins to move. By default 0.0.
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shader_type canvas_item;
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render_mode blend_mix;
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// Wind settings.
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uniform float speed = 1.0;
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uniform float minStrength : hint_range(0.0, 1.0) = 0.05;
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uniform float maxStrength : hint_range(0.0, 1.0) = 0.01;
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uniform float strengthScale = 100.0;
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uniform float interval = 3.5;
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uniform float detail = 1.0;
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uniform float distortion : hint_range(0.0, 1.0);
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uniform float heightOffset : hint_range(0.0, 1.0);
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// With the offset value, you can if you want different moves for each asset. Just put a random value (1, 2, 3) in the editor. Don't forget to mark the material as unique if you use this
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uniform float offset = 0;
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float getWind(vec2 vertex, vec2 uv, float time){
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float diff = pow(maxStrength - minStrength, 2.0);
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float strength = clamp(minStrength + diff + sin(time / interval) * diff, minStrength, maxStrength) * strengthScale;
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float wind = (sin(time) + cos(time * detail)) * strength * max(0.0, (1.0-uv.y) - heightOffset);
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return wind;
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}
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void vertex() {
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vec4 pos = MODEL_MATRIX * vec4(0.0, 0.0, 0.0, 1.0);
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float time = TIME * speed + offset;
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//float time = TIME * speed + pos.x * pos.y ; not working when moving...
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VERTEX.x += getWind(VERTEX.xy, UV, time);
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}
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