Introduce D2kBuilding

OpenRA.Mods.D2k/Traits/Buildings/D2kBuilding.cs

@@ -0,0 +1,100 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2020 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Linq;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.D2k.Traits.Buildings
+{
+	public class D2kBuildingInfo : BuildingInfo
+	{
+		[Desc("Amount of damage received per DamageInterval ticks.")]
+		public readonly int Damage = 500;
+
+		[Desc("Delay between receiving damage.")]
+		public readonly int DamageInterval = 100;
+
+		[Desc("Apply the damage using these damagetypes.")]
+		public readonly BitSet<DamageType> DamageTypes = default(BitSet<DamageType>);
+
+		[Desc("Terrain types where the actor will take damage.")]
+		public readonly string[] DamageTerrainTypes = { "Rock" };
+
+		[Desc("Percentage health below which the actor will not receive further damage.")]
+		public readonly int DamageThreshold = 50;
+
+		[Desc("Inflict damage down to the DamageThreshold when the actor gets created on damaging terrain.")]
+		public readonly bool StartOnThreshold = true;
+
+		public override object Create(ActorInitializer init) { return new D2kBuilding(init, this); }
+	}
+
+	public class D2kBuilding : Building, ITick, INotifyCreated
+	{
+		readonly D2kBuildingInfo info;
+		IHealth health;
+		int safeTiles;
+		int totalTiles;
+		int damageThreshold;
+		int damageTicks;
+
+		public D2kBuilding(ActorInitializer init, D2kBuildingInfo info)
+			: base(init, info)
+		{
+			this.info = info;
+		}
+
+		void INotifyCreated.Created(Actor self)
+		{
+			health = self.TraitOrDefault<IHealth>();
+		}
+
+		protected override void AddedToWorld(Actor self)
+		{
+			base.AddedToWorld(self);
+
+			if (health == null)
+				return;
+
+			foreach (var kv in self.OccupiesSpace.OccupiedCells())
+			{
+				totalTiles++;
+				if (!info.DamageTerrainTypes.Contains(self.World.Map.GetTerrainInfo(kv.Cell).Type))
+					safeTiles++;
+			}
+
+			if (totalTiles == 0 || totalTiles == safeTiles)
+				return;
+
+			// Cast to long to avoid overflow when multiplying by the health
+			damageThreshold = (int)((info.DamageThreshold * (long)health.MaxHP + (100 - info.DamageThreshold) * safeTiles * (long)health.MaxHP / totalTiles) / 100);
+
+			if (!info.StartOnThreshold)
+				return;
+
+			// Start with maximum damage applied
+			var delta = health.HP - damageThreshold;
+			if (delta > 0)
+				self.InflictDamage(self.World.WorldActor, new Damage(delta, info.DamageTypes));
+		}
+
+		void ITick.Tick(Actor self)
+		{
+			if (totalTiles == safeTiles || health.HP <= damageThreshold || --damageTicks > 0)
+				return;
+
+			self.InflictDamage(self.World.WorldActor, new Damage(info.Damage, info.DamageTypes));
+			damageTicks = info.DamageInterval;
+		}
+	}
+}

mods/d2k/rules/arrakis.yaml

@@ -134,17 +134,17 @@ sietch:
 	Inherits: ^Building
 	Tooltip:
 		Name: Fremen Sietch
-	Building:
+	D2kBuilding:
 		Footprint: xx xx
 		Dimensions: 2,2
 		TerrainTypes: Cliff
+		DamageTerrainTypes:
 	Health:
 		HP: 60000
 	Armor:
 		Type: wood
 	RevealsShroud:
 		Range: 10c0
-	-DamagedByTerrain:
 	-GivesBuildableArea:
 	-Sellable:
 	-Capturable:

mods/d2k/rules/defaults.yaml

@@ -404,7 +404,7 @@
 		Type: Rectangle
 			TopLeft: -512, -512
 			BottomRight: 512, 512
-	Building:
+	D2kBuilding:
 		Dimensions: 1,1
 		Footprint: x
 		TerrainTypes: Rock, Concrete
@@ -451,11 +451,6 @@
 	GrantConditionOnPrerequisite@AUTOCONCRETE:
 		Condition: auto-concrete
 		Prerequisites: global-auto-concrete
-	DamagedByTerrain:
-		RequiresCondition: !auto-concrete
-		Damage: 500
-		DamageInterval: 100
-		Terrain: Rock
 	LaysTerrain:
 		RequiresCondition: auto-concrete
 		TerrainTypes: Rock

mods/d2k/rules/structures.yaml

@@ -1,7 +1,7 @@
 ^concrete:
 	AlwaysVisible:
 	Interactable:
-	Building:
+	D2kBuilding:
 		TerrainTypes: Rock
 		BuildSounds: CHUNG.WAV
 		AllowInvalidPlacement: true
@@ -25,7 +25,7 @@
 
 concretea:
 	Inherits: ^concrete
-	Building:
+	D2kBuilding:
 		Footprint: xx xx
 		Dimensions: 2,2
 	Tooltip:
@@ -40,7 +40,7 @@ concretea:
 
 concreteb:
 	Inherits: ^concrete
-	Building:
+	D2kBuilding:
 		Footprint: xxx xxx xxx
 		Dimensions: 3,3
 	Tooltip:
@@ -59,8 +59,7 @@ construction_yard:
 	Inherits@UPGRADEABLE: ^Upgradeable
 	Buildable:
 		Description: Produces structures.
-	-DamagedByTerrain:
-	Building:
+	D2kBuilding:
 		Footprint: xxx xxx ===
 		Dimensions: 3,3
 		LocalCenterOffset: 0,-512,0
@@ -127,7 +126,7 @@ wind_trap:
 		Cost: 225
 	Tooltip:
 		Name: Wind Trap
-	Building:
+	D2kBuilding:
 		Footprint: xx xx ==
 		Dimensions: 2,3
 		LocalCenterOffset: 0,-512,0
@@ -176,7 +175,7 @@ barracks:
 		Cost: 225
 	Tooltip:
 		Name: Barracks
-	Building:
+	D2kBuilding:
 		Footprint: xx xx ==
 		Dimensions: 2,3
 		LocalCenterOffset: 0,-512,0
@@ -243,7 +242,7 @@ refinery:
 		Cost: 1500
 	Tooltip:
 		Name: Spice Refinery
-	Building:
+	D2kBuilding:
 		Footprint: =xx xx= ===
 		Dimensions: 3,3
 		LocalCenterOffset: 0,-512,0
@@ -367,7 +366,7 @@ light_factory:
 		Cost: 500
 	Tooltip:
 		Name: Light Factory
-	Building:
+	D2kBuilding:
 		Footprint: xxx xx= ===
 		Dimensions: 3,3
 		LocalCenterOffset: 0,-512,0
@@ -445,7 +444,7 @@ heavy_factory:
 		Cost: 1000
 	Tooltip:
 		Name: Heavy Factory
-	Building:
+	D2kBuilding:
 		Footprint: _x_ xxx =xX ===
 		Dimensions: 3,4
 		LocalCenterOffset: 0,-512,0
@@ -533,7 +532,7 @@ outpost:
 		Cost: 750
 	Tooltip:
 		Name: Outpost
-	Building:
+	D2kBuilding:
 		Footprint: xxx xxx ===
 		Dimensions: 3,3
 		LocalCenterOffset: 0,-512,0
@@ -581,7 +580,7 @@ starport:
 		Description: Dropzone for quick reinforcements, at a price.
 	Valued:
 		Cost: 1500
-	Building:
+	D2kBuilding:
 		Footprint: xxx x=x =x=
 		Dimensions: 3,3
 	Selectable:
@@ -672,7 +671,7 @@ wall:
 		Name: Concrete Wall
 		GenericName: Structure
 	AppearsOnRadar:
-	Building:
+	D2kBuilding:
 		BuildSounds: CHUNG.WAV
 		TerrainTypes: Rock, Concrete
 	FootprintPlaceBuildingPreview:
@@ -816,7 +815,7 @@ repair_pad:
 		Cost: 800
 	Tooltip:
 		Name: Repair Pad
-	Building:
+	D2kBuilding:
 		Footprint: +++ +++ +++
 		Dimensions: 3,3
 	Health:
@@ -883,7 +882,7 @@ high_tech_factory:
 	Exit:
 		SpawnOffset: 0,0,728
 		ExitCell: 0,0
-	Building:
+	D2kBuilding:
 		Footprint: _X_ xxx XXX ===
 		Dimensions: 3,4
 		LocalCenterOffset: 0,-512,0
@@ -953,7 +952,7 @@ research_centre:
 		Cost: 1000
 	Tooltip:
 		Name: IX Research Center
-	Building:
+	D2kBuilding:
 		Footprint: _X_ xxx XXX ===
 		Dimensions: 3,4
 		LocalCenterOffset: 0,-512,0
@@ -1005,7 +1004,7 @@ palace:
 		Cost: 1600
 	Tooltip:
 		Name: Palace
-	Building:
+	D2kBuilding:
 		Footprint: xx= xxx =xx
 		Dimensions: 3,3
 	Health: