88 lines
2.1 KiB
C#
88 lines
2.1 KiB
C#
using System;
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using System.Linq;
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using OpenRa.Game.GameRules;
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namespace OpenRa.Game.Traits
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{
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class Helicopter : ITick, IOrder, IMovement
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{
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public int2 targetLocation;
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const int CruiseAltitude = 20;
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public Helicopter(Actor self)
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{
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targetLocation = self.Location;
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}
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public Order IssueOrder(Actor self, int2 xy, MouseInput mi, Actor underCursor)
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{
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if (mi.Button == MouseButton.Left) return null;
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if (underCursor == null)
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return new Order("Move", self, null, xy, null);
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return null;
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}
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public void ResolveOrder( Actor self, Order order )
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{
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if( order.OrderString == "Move" )
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{
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targetLocation = order.TargetLocation;
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var attackBase = self.traits.WithInterface<AttackBase>().FirstOrDefault();
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if( attackBase != null )
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attackBase.target = null; /* move cancels attack order */
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}
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}
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public void Tick(Actor self)
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{
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var unit = self.traits.Get<Unit>();
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if (self.Location != targetLocation)
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{
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var dist = Util.CenterOfCell(targetLocation) - self.CenterLocation;
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var desiredFacing = Util.GetFacing(dist, unit.Facing);
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Util.TickFacing(ref unit.Facing, desiredFacing,
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self.Info.ROT);
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var rawSpeed = .2f * Util.GetEffectiveSpeed(self);
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var angle = (unit.Facing - desiredFacing) / 128f * Math.PI;
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var scale = .4f + .6f * (float)Math.Cos(angle);
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if (unit.Altitude > CruiseAltitude / 2) // do some movement.
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{
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self.CenterLocation += (rawSpeed * scale / dist.Length) * dist;
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self.CenterLocation += (1f - scale) * rawSpeed
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* float2.FromAngle((float)angle);
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self.Location = ((1 / 24f) * self.CenterLocation).ToInt2();
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}
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if (unit.Altitude < CruiseAltitude)
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{
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++unit.Altitude;
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return;
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}
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}
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else if (unit.Altitude > 0 &&
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Game.IsCellBuildable( self.Location, UnitMovementType.Foot ))
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{
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--unit.Altitude;
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}
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/* todo: bob slightly when hovering */
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}
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public UnitMovementType GetMovementType()
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{
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return UnitMovementType.Fly;
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}
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public bool CanEnterCell(int2 location)
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{
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return true; // Planes can go anywhere (?)
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}
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}
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}
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