67 lines
1.4 KiB
C#
67 lines
1.4 KiB
C#
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using System;
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using System.Linq;
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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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static 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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void UpdateList()
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{
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var toRemove = new List<Tuple<int, float2, int>>();
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shakeEffects.RemoveAll(t => t.a == ticks);
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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(ticks + 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(
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(float) Math.Sin((ticks*2*Math.PI)/xFreq) ,
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(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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var cp = Game.viewport.Location
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+ .5f * new float2(Game.viewport.Width, Game.viewport.Height);
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var intensity = 24 * 24 * 100 * shakeEffects.Sum(
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e => e.c / (e.b - cp).LengthSquared);
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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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