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heli separation

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This commit is contained in:
Chris Forbes
2010-05-02 13:18:13 +12:00
parent 63b150f3fd
commit 32c73fa72f
1 changed files with 29 additions and 7 deletions
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36
OpenRA.Game/Traits/Activities/HeliAttack.cs
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@@ -19,6 +19,7 @@
#endregion
using System;
using System.Linq;
using OpenRA.GameRules;
namespace OpenRA.Traits.Activities
@@ -27,6 +28,7 @@ namespace OpenRA.Traits.Activities
{
Actor target;
const int CruiseAltitude = 20;
const int AvoidDist = 80;
public HeliAttack( Actor target ) { this.target = target; }
public IActivity NextActivity { get; set; }
@@ -54,17 +56,37 @@ namespace OpenRA.Traits.Activities
var desiredFacing = Util.GetFacing(dist, unit.Facing);
Util.TickFacing(ref unit.Facing, desiredFacing, self.Info.Traits.Get<UnitInfo>().ROT);
if (!float2.WithinEpsilon(float2.Zero, dist, range * Game.CellSize))
{
var rawSpeed = .2f * Util.GetEffectiveSpeed(self, UnitMovementType.Fly);
self.CenterLocation += (rawSpeed / dist.Length) * dist;
self.Location = ((1 / 24f) * self.CenterLocation).ToInt2();
}
var rawSpeed = .2f * Util.GetEffectiveSpeed(self, UnitMovementType.Fly);
if (!float2.WithinEpsilon(float2.Zero, dist, range * Game.CellSize))
self.CenterLocation += (rawSpeed / dist.Length) * dist;
var otherHelis = self.World.FindUnitsInCircle(self.CenterLocation, AvoidDist)
.Where(a => a.traits.Contains<Helicopter>());
var f = otherHelis
.Select(h => GetRepulseForce(self, h))
.Aggregate(float2.Zero, (a, b) => a + b);
self.CenterLocation += rawSpeed * f;
self.Location = ((1 / 24f) * self.CenterLocation).ToInt2();
/* todo: maintain seperation wrt other helis */
return this;
}
const float Epsilon = .5f;
float2 GetRepulseForce(Actor self, Actor h)
{
if (self == h)
return float2.Zero;
var d = self.CenterLocation - h.CenterLocation;
if (d.LengthSquared < Epsilon)
return float2.FromAngle((float)self.World.SharedRandom.NextDouble() * 3.14f);
return (2 / d.LengthSquared) * d;
}
public void Cancel(Actor self) { target = null; NextActivity = null; }
}
}