101 lines
2.9 KiB
C#
101 lines
2.9 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2020 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, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System.Linq;
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using OpenRA.Mods.Common.Traits;
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using OpenRA.Primitives;
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using OpenRA.Traits;
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namespace OpenRA.Mods.D2k.Traits.Buildings
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{
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public class D2kBuildingInfo : BuildingInfo
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{
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[Desc("Amount of damage received per DamageInterval ticks.")]
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public readonly int Damage = 500;
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[Desc("Delay between receiving damage.")]
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public readonly int DamageInterval = 100;
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[Desc("Apply the damage using these damagetypes.")]
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public readonly BitSet<DamageType> DamageTypes = default(BitSet<DamageType>);
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[Desc("Terrain types where the actor will take damage.")]
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public readonly string[] DamageTerrainTypes = { "Rock" };
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[Desc("Percentage health below which the actor will not receive further damage.")]
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public readonly int DamageThreshold = 50;
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[Desc("Inflict damage down to the DamageThreshold when the actor gets created on damaging terrain.")]
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public readonly bool StartOnThreshold = true;
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public override object Create(ActorInitializer init) { return new D2kBuilding(init, this); }
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}
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public class D2kBuilding : Building, ITick, INotifyCreated
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{
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readonly D2kBuildingInfo info;
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IHealth health;
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int safeTiles;
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int totalTiles;
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int damageThreshold;
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int damageTicks;
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public D2kBuilding(ActorInitializer init, D2kBuildingInfo info)
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: base(init, info)
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{
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this.info = info;
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}
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void INotifyCreated.Created(Actor self)
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{
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health = self.TraitOrDefault<IHealth>();
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}
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protected override void AddedToWorld(Actor self)
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{
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base.AddedToWorld(self);
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if (health == null)
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return;
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foreach (var kv in self.OccupiesSpace.OccupiedCells())
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{
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totalTiles++;
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if (!info.DamageTerrainTypes.Contains(self.World.Map.GetTerrainInfo(kv.Cell).Type))
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safeTiles++;
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}
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if (totalTiles == 0 || totalTiles == safeTiles)
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return;
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// Cast to long to avoid overflow when multiplying by the health
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damageThreshold = (int)((info.DamageThreshold * (long)health.MaxHP + (100 - info.DamageThreshold) * safeTiles * (long)health.MaxHP / totalTiles) / 100);
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if (!info.StartOnThreshold)
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return;
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// Start with maximum damage applied
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var delta = health.HP - damageThreshold;
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if (delta > 0)
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self.InflictDamage(self.World.WorldActor, new Damage(delta, info.DamageTypes));
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}
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void ITick.Tick(Actor self)
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{
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if (totalTiles == safeTiles || health.HP <= damageThreshold || --damageTicks > 0)
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return;
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self.InflictDamage(self.World.WorldActor, new Damage(info.Damage, info.DamageTypes));
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damageTicks = info.DamageInterval;
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}
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}
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}
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