72 lines
1.7 KiB
C#
72 lines
1.7 KiB
C#
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using System;
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using OpenRa.Traits;
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using System.Collections.Generic;
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using OpenRa.FileFormats;
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namespace OpenRa.Traits
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{
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class ScreenShakerInfo : ITraitInfo
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{
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public object Create( Actor self ) { return new ScreenShaker( self ); }
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}
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public class ScreenShaker : ITick
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{
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int ticks = 0;
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static List<Tuple<int, float2, int>> shakeEffects = new List<Tuple<int, float2, int>>();
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public ScreenShaker (Actor self){}
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public void Tick (Actor self)
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{
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Game.viewport.Scroll(getScrollOffset());
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updateList();
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ticks++;
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}
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private void updateList()
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{
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var toRemove = new List<Tuple<int, float2, int>>();
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for (int i = 0; i < shakeEffects.Count; i++){
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var tuple = shakeEffects[i];
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tuple.a = tuple.a - 1;
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shakeEffects[i] = tuple;
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if (tuple.a == 0)
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toRemove.Add(tuple);
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}
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foreach(Tuple<int, float2, int> t in toRemove){
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shakeEffects.Remove(t);
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}
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}
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public static void registerShakeEffect(int time, float2 position, int intensity)
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{
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shakeEffects.Add(Tuple.New<int, float2, int>(time, position, intensity));
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}
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public float2 getScrollOffset()
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{
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int xFreq = 4;
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int yFreq = 5;
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return getIntensity() * new float2( (float) Math.Sin((ticks*2*Math.PI)/xFreq) , (float) Math.Cos((ticks*2*Math.PI)/yFreq));
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}
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public float getIntensity()
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{
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float intensity = 0;
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foreach(Tuple<int, float2, int> tuple in shakeEffects)
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{
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intensity += (24*24*100*tuple.c)/( (tuple.b.X - Game.viewport.Location.X) * (tuple.b.X - Game.viewport.Location.X)
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+ (tuple.b.Y - Game.viewport.Location.Y) * (tuple.b.Y - Game.viewport.Location.Y) );
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}
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return Math.Min(intensity, 10);
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}
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}
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}
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