114 lines
2.6 KiB
C#
114 lines
2.6 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using OpenRA.Traits;
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namespace OpenRA.Mods.Common.Traits
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{
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public class RadarPingsInfo : ITraitInfo
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{
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public readonly int FromRadius = 200;
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public readonly int ToRadius = 15;
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public readonly int ShrinkSpeed = 4;
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public readonly float RotationSpeed = 0.12f;
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public object Create(ActorInitializer init) { return new RadarPings(this); }
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}
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public class RadarPings : ITick
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{
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public readonly List<RadarPing> Pings = new List<RadarPing>();
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readonly RadarPingsInfo info;
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public WPos? LastPingPosition;
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public RadarPings(RadarPingsInfo info)
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{
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this.info = info;
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}
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public void Tick(Actor self)
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{
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foreach (var ping in Pings.ToArray())
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if (!ping.Tick())
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Pings.Remove(ping);
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}
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public RadarPing Add(Func<bool> isVisible, WPos position, Color color, int duration)
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{
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var ping = new RadarPing(isVisible, position, color, duration,
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info.FromRadius, info.ToRadius, info.ShrinkSpeed, info.RotationSpeed);
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if (ping.IsVisible())
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LastPingPosition = ping.Position;
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Pings.Add(ping);
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return ping;
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}
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public void Remove(RadarPing ping)
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{
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Pings.Remove(ping);
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}
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}
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public class RadarPing
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{
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public Func<bool> IsVisible;
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public WPos Position;
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public Color Color;
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public int Duration;
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public int FromRadius;
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public int ToRadius;
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public int ShrinkSpeed;
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public float RotationSpeed;
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int radius;
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float angle;
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int tick;
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public RadarPing(Func<bool> isVisible, WPos position, Color color, int duration,
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int fromRadius, int toRadius, int shrinkSpeed, float rotationSpeed)
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{
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IsVisible = isVisible;
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Position = position;
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Color = color;
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Duration = duration;
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FromRadius = fromRadius;
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ToRadius = toRadius;
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ShrinkSpeed = shrinkSpeed;
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RotationSpeed = rotationSpeed;
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radius = fromRadius;
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}
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public bool Tick()
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{
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if (++tick == Duration)
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return false;
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radius = Math.Max(radius - ShrinkSpeed, ToRadius);
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angle -= RotationSpeed;
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return true;
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}
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public IEnumerable<float2> Points(float2 center)
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{
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yield return center + radius * float2.FromAngle(angle);
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yield return center + radius * float2.FromAngle((float)(angle + 2 * Math.PI / 3));
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yield return center + radius * float2.FromAngle((float)(angle + 4 * Math.PI / 3));
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}
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}
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}
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