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85 lines
2 KiB
Haxe
85 lines
2 KiB
Haxe
package funkin.graphics.shaders;
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import flixel.addons.display.FlxRuntimeShader;
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import openfl.Assets;
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enum WiggleEffectType
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{
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DREAMY; // 0
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WAVY; // 1
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HEAT_WAVE_HORIZONTAL; // 2
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HEAT_WAVE_VERTICAL; // 3
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FLAG; // 4
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}
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/**
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* To use:
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* 1. Create an instance of the class, specifying speed, frequency, and amplitude.
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* 2. Call `sprite.shader = wiggleEffect` on the target sprite.
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* 3. Call the update() method on the instance every frame.
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*/
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class WiggleEffectRuntime extends FlxRuntimeShader
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{
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public static function getEffectTypeId(v:WiggleEffectType):Int
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{
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return WiggleEffectType.getConstructors().indexOf(Std.string(v));
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}
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public var effectType(default, set):WiggleEffectType = DREAMY;
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function set_effectType(v:WiggleEffectType):WiggleEffectType
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{
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this.setInt('effectType', getEffectTypeId(v));
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return effectType = v;
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}
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public var waveSpeed(default, set):Float = 0;
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function set_waveSpeed(v:Float):Float
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{
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this.setFloat('uSpeed', v);
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return waveSpeed = v;
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}
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public var waveFrequency(default, set):Float = 0;
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function set_waveFrequency(v:Float):Float
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{
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this.setFloat('uFrequency', v);
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return waveFrequency = v;
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}
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public var waveAmplitude(default, set):Float = 0;
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function set_waveAmplitude(v:Float):Float
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{
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this.setFloat('uWaveAmplitude', v);
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return waveAmplitude = v;
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}
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var time(default, set):Float = 0;
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function set_time(v:Float):Float
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{
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this.setFloat('uTime', v);
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return time = v;
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}
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public function new(speed:Float, freq:Float, amplitude:Float, ?effect:WiggleEffectType = DREAMY):Void
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{
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super(Assets.getText(Paths.frag('wiggle')));
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// These values may not propagate to the shader until later.
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this.waveSpeed = speed;
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this.waveFrequency = freq;
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this.waveAmplitude = amplitude;
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this.effectType = effect;
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}
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public function update(elapsed:Float)
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{
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// The setter tied to this value automatically propagates the value to the shader.
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this.time += elapsed;
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}
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}
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