137 lines
3.7 KiB
C#
137 lines
3.7 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.Linq;
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using OpenRA.GameRules;
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using OpenRA.Mods.RA.Move;
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using OpenRA.Mods.RA.Render;
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using OpenRA.Traits;
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namespace OpenRA.Mods.D2k
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{
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public enum AttackState { Burrowed, EmergingAboveGround, ReturningUndergrown }
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class SwallowActor : Activity
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{
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readonly Actor target;
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readonly Mobile mobile;
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readonly Sandworm sandworm;
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readonly WeaponInfo weapon;
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int countdown;
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AttackState stance = AttackState.Burrowed;
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// TODO: random numbers to make it look ok
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[Desc("The number of ticks it takes to return underground.")]
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const int ReturnTime = 60;
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[Desc("The number of ticks it takes to get in place under the target to attack.")]
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const int AttackTime = 30;
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public SwallowActor(Actor self, Actor target, WeaponInfo weapon)
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{
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if (!target.HasTrait<Mobile>())
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throw new InvalidOperationException("SwallowActor requires a target actor with the Mobile trait");
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this.target = target;
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this.weapon = weapon;
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mobile = self.TraitOrDefault<Mobile>();
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sandworm = self.TraitOrDefault<Sandworm>();
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countdown = AttackTime;
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}
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bool WormAttack(Actor worm)
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{
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var targetLocation = target.Location;
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var lunch = worm.World.ActorMap.GetUnitsAt(targetLocation)
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.Except(new[] { worm })
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.Where(t => weapon.IsValidAgainst(t, worm));
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if (!lunch.Any())
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return false;
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stance = AttackState.EmergingAboveGround;
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lunch.Do(t => t.World.AddFrameEndTask(_ => { t.World.Remove(t); t.Kill(t); })); // dispose of the evidence (we don't want husks)
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mobile.SetPosition(worm, targetLocation);
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PlayAttackAnimation(worm);
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return true;
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}
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public bool PlayAttackAnimation(Actor self)
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{
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var renderUnit = self.Trait<RenderUnit>();
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renderUnit.PlayCustomAnim(self, "sand");
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renderUnit.PlayCustomAnim(self, "mouth");
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// TODO: Someone familiar with how the sounds work should fix this:
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//Sound.PlayNotification(self.Owner, "Speech", "WormAttack", self.Owner.Country.Race);
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return true;
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}
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public override Activity Tick(Actor self)
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{
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if (countdown > 0)
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{
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countdown--;
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return this;
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}
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if (stance == AttackState.ReturningUndergrown) // wait for the worm to get back underground
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{
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#region DisappearToMapEdge
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// More random numbers used for min and max bounds
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var rand = self.World.SharedRandom.Next(200, 400);
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if (rand % 2 == 0) // there is a 50-50 chance that the worm would just go away
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{
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self.CancelActivity();
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//self.World.WorldActor.QueueActivity(new DisappearToMapEdge(self, rand));
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self.World.AddFrameEndTask(w => w.Remove(self));
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var wormManager = self.World.WorldActor.TraitOrDefault<WormManager>();
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if (wormManager != null)
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wormManager.DecreaseWorms();
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}
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#endregion
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// TODO: if the worm did not disappear, make the animation reappear here
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return NextActivity;
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}
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if (stance == AttackState.Burrowed) // wait for the worm to get in position
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{
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// TODO: make the worm animation (currenty the lightning) disappear here
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// this is so that the worm cancels an attack against a target that has reached solid rock
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if (sandworm == null || !sandworm.CanAttackAtLocation(self, target.Location))
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{
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return NextActivity;
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}
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var success = WormAttack(self);
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if (!success)
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{
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return NextActivity;
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}
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countdown = ReturnTime;
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stance = AttackState.ReturningUndergrown;
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}
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return this;
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}
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}
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}
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