144 lines
4.8 KiB
C#
144 lines
4.8 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
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* This file is part of OpenRA.
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*
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* OpenRA is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenRA is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenRA. If not, see <http://www.gnu.org/licenses/>.
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*/
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#endregion
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using System;
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using System.Linq;
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using OpenRA.Traits.Activities;
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using OpenRA.GameRules;
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using OpenRA.Traits;
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using OpenRA.Mods.RA.Activities;
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namespace OpenRA.Mods.RA
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{
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class HelicopterInfo : ITraitInfo
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{
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public readonly string[] RepairBuildings = { "fix" };
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public readonly string[] RearmBuildings = { "hpad" };
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public readonly int CruiseAltitude = 20;
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public readonly int IdealSeparation = 40;
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public readonly bool LandWhenIdle = true;
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public object Create(ActorInitializer init) { return new Helicopter(init.self); }
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}
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class Helicopter : ITick, IIssueOrder, IResolveOrder, IMovement
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{
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public IDisposable reservation;
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public Helicopter(Actor self) {}
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static bool HeliCanEnter(Actor self, Actor a)
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{
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if (self.Info.Traits.Get<HelicopterInfo>().RearmBuildings.Contains(a.Info.Name)) return true;
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if (self.Info.Traits.Get<HelicopterInfo>().RepairBuildings.Contains(a.Info.Name)) return true;
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return false;
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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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{
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if (self.traits.GetOrDefault<IMovement>().CanEnterCell(xy))
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return new Order("Move", self, xy);
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}
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if (HeliCanEnter(self, underCursor)
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&& underCursor.Owner == self.Owner
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&& !Reservable.IsReserved(underCursor))
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return new Order("Enter", self, underCursor);
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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 (reservation != null)
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{
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reservation.Dispose();
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reservation = null;
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}
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if (order.OrderString == "Move")
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{
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self.CancelActivity();
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self.QueueActivity(new HeliFly(Util.CenterOfCell(order.TargetLocation)));
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if (self.Info.Traits.Get<HelicopterInfo>().LandWhenIdle)
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{
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self.QueueActivity(new Turn(self.Info.Traits.GetOrDefault<UnitInfo>().InitialFacing));
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self.QueueActivity(new HeliLand(true));
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}
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}
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if (order.OrderString == "Enter")
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{
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if (Reservable.IsReserved(order.TargetActor)) return;
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var res = order.TargetActor.traits.GetOrDefault<Reservable>();
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if (res != null)
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reservation = res.Reserve(self);
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var productionInfo = order.TargetActor.Info.Traits.GetOrDefault<ProductionInfo>();
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var offset = productionInfo != null ? productionInfo.SpawnOffset : null;
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var offsetVec = offset != null ? new float2(offset[0], offset[1]) : float2.Zero;
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self.CancelActivity();
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self.QueueActivity(new HeliFly(order.TargetActor.CenterLocation + offsetVec));
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self.QueueActivity(new Turn(self.Info.Traits.GetOrDefault<UnitInfo>().InitialFacing));
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self.QueueActivity(new HeliLand(false));
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self.QueueActivity(self.Info.Traits.Get<HelicopterInfo>().RearmBuildings.Contains(order.TargetActor.Info.Name)
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? (IActivity)new Rearm() : new Repair(order.TargetActor));
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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 rawSpeed = .2f * Util.GetEffectiveSpeed(self, UnitMovementType.Fly);
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var otherHelis = self.World.FindUnitsInCircle(self.CenterLocation, self.Info.Traits.Get<HelicopterInfo>().IdealSeparation)
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.Where(a => a.traits.Contains<Helicopter>());
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var f = otherHelis
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.Select(h => self.traits.Get<Helicopter>().GetRepulseForce(self, h))
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.Aggregate(float2.Zero, (a, b) => a + b);
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self.CenterLocation += rawSpeed * f;
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self.Location = ((1 / 24f) * self.CenterLocation).ToInt2();
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}
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const float Epsilon = .5f;
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public float2 GetRepulseForce(Actor self, Actor h)
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{
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if (self == h)
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return float2.Zero;
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var d = self.CenterLocation - h.CenterLocation;
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if (d.Length > self.Info.Traits.Get<HelicopterInfo>().IdealSeparation)
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return float2.Zero;
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if (d.LengthSquared < Epsilon)
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return float2.FromAngle((float)self.World.SharedRandom.NextDouble() * 3.14f);
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return (5 / d.LengthSquared) * d;
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}
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public UnitMovementType GetMovementType() { return UnitMovementType.Fly; }
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public bool CanEnterCell(int2 location) { return true; }
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}
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}
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