Setup Tiberian Sun forest fires.

OpenRA.Mods.Common/Traits/Conditions/SpreadsCondition.cs

@@ -0,0 +1,72 @@
+#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.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Any actor with this trait enabled has a chance to affect others with this trait.")]
+	public class SpreadsConditionInfo : ConditionalTraitInfo
+	{
+		[Desc("The chance this actor is going to affect an adjacent actor.")]
+		public readonly int Probability = 5;
+
+		[Desc("How far the condition can spread from one actor to another.")]
+		public readonly WDist Range = WDist.FromCells(3);
+
+		[GrantedConditionReference]
+		[Desc("Condition to grant onto another actor in range with the same trait.")]
+		public readonly string SpreadCondition = "spreading";
+
+		[Desc("Time in ticks to wait between spreading further.")]
+		public int Delay = 5;
+
+		public override object Create(ActorInitializer init) { return new SpreadsCondition(this); }
+	}
+
+	public class SpreadsCondition : ConditionalTrait<SpreadsConditionInfo>, ITick
+	{
+		readonly SpreadsConditionInfo info;
+
+		int delay;
+
+		public SpreadsCondition(SpreadsConditionInfo info)
+			: base(info)
+		{
+			this.info = info;
+			delay = info.Delay;
+		}
+
+		void ITick.Tick(Actor self)
+		{
+			if (IsTraitDisabled)
+				return;
+
+			if (delay-- > 0)
+				return;
+
+			delay = info.Delay;
+
+			if (self.World.SharedRandom.Next(100) <= info.Probability)
+			{
+				var actorsInRange = self.World.FindActorsInCircle(self.CenterPosition, info.Range)
+					.Where(a => a.TraitOrDefault<SpreadsCondition>() != null);
+
+				if (!actorsInRange.Any())
+					return;
+
+				var target = actorsInRange.Random(self.World.SharedRandom);
+				target.GrantCondition(info.SpreadCondition);
+			}
+		}
+	}
+}

mods/ts/rules/defaults.yaml

@@ -1034,8 +1034,9 @@
 
 ^Tree:
 	Inherits@1: ^SpriteActor
+	Inherits@2: ^ExistsInWorld
 	Interactable:
-	HiddenUnderShroud:
+	FrozenUnderFog:
 	RenderSprites:
 		Palette: terraindecoration
 	WithSpriteBody:
@@ -1048,6 +1049,34 @@
 		Categories: Tree
 	RequiresSpecificOwners:
 		ValidOwnerNames: Neutral
+	HitShape:
+	Health:
+		HP: 200000
+	Armor:
+		Type: Wood
+	Targetable:
+		TargetTypes: Trees, NoAutoTarget
+	GrantConditionOnDamageState@Small:
+		Condition: small-fire
+		ValidDamageStates: Medium
+	GrantConditionOnDamageState@Large:
+		Condition: large-fire
+		ValidDamageStates: Heavy, Critical
+	WithIdleOverlay@SmallFire:
+		Image: fire2
+		Palette: effect
+		RequiresCondition: small-fire
+	WithIdleOverlay@LargeFire:
+		Image: fire1
+		Palette: effect
+		RequiresCondition: large-fire
+	SpreadsCondition@Fire:
+		RequiresCondition: small-fire || large-fire
+		SpreadCondition: burning
+	ChangesHealth:
+		StartIfBelow: 101
+		Step: -500
+		RequiresCondition: small-fire || large-fire || burning
 
 ^Rock:
 	Inherits@1: ^SpriteActor

mods/ts/sequences/misc.yaml

@@ -709,3 +709,17 @@ podring:
 		Frames: 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
 		Length: *
 		AlphaFade: True
+
+fire1:
+	idle-overlay:
+		Length: 17
+		BlendMode: Translucent
+		Offset: 0, -24, 24
+		ZOffset: 1023
+
+fire2:
+	idle-overlay:
+		Length: 17
+		BlendMode: Translucent
+		Offset: 0, -18, 18
+		ZOffset: 1023

mods/ts/weapons/ballisticweapons.yaml

@@ -134,6 +134,7 @@ Grenade:
 	ReloadDelay: 60
 	Range: 4c512
 	-Report:
+	ValidTargets: Ground, Trees
 	Projectile: Bullet
 		Speed: 226
 		Blockable: true
@@ -150,6 +151,7 @@ Grenade:
 			Light: 70
 			Concrete: 28
 		DamageTypes: Prone70Percent, TriggerProne, ExplosionDeath
+		ValidTargets: Ground, Trees
 	Warhead@2Eff: CreateEffect
 		Explosions: small_grey_explosion
 		ImpactSounds: expnew13.aud

mods/ts/weapons/energyweapons.yaml

@@ -57,6 +57,7 @@ SonicZap:
 	ReloadDelay: 180
 	Range: 6c0
 	Report: sonic4.aud
+	ValidTargets: Ground, Trees
 	Projectile: AreaBeam
 		Speed: 0c128
 		Duration: 90
@@ -85,6 +86,7 @@ SonicZap:
 		InvalidTargets: Disruptor # Does not affect friendly disruptors at all
 		AffectsParent: false
 		ValidRelationships: Ally
+		ValidTargets: Ground, Trees
 		Versus:
 			Heavy: 80
 			Concrete: 60
@@ -124,6 +126,7 @@ CyCannon:
 		RangeLimit: 8c0
 		TerrainHeightAware: true
 	Warhead@1Dam: SpreadDamage
+		ValidTargets: Ground, Trees
 		Spread: 43
 		Damage: 12000
 		Versus:

mods/ts/weapons/otherweapons.yaml

@@ -1,4 +1,5 @@
 FireballLauncher:
+	ValidTargets: Ground, Trees
 	ReloadDelay: 50
 	Range: 4c256
 	Report: flamtnk1.aud
@@ -11,6 +12,7 @@ FireballLauncher:
 	Warhead@1Dam: SpreadDamage
 		Spread: 288
 		Falloff: 100, 50, 25, 12, 6, 3, 0
+		ValidTargets: Ground, Trees
 		Damage: 2500
 		Versus:
 			None: 600
@@ -29,6 +31,7 @@ Bomb:
 	BurstDelays: 6
 	Range: 2c512
 	TargetActorCenter: true
+	ValidTargets: Ground, Trees
 	Projectile: GravityBomb
 		Velocity: 72, 0, -90
 		Acceleration: 0, 0, -8
@@ -46,6 +49,7 @@ Bomb:
 			Heavy: 32
 			Concrete: 100
 		DamageTypes: Prone100Percent, TriggerProne, ExplosionDeath
+		ValidTargets: Ground, Trees
 	Warhead@2Eff: CreateEffect
 		Explosions: large_explosion
 		ImpactSounds: expnew09.aud

mods/ts/weapons/superweapons.yaml

@@ -1,6 +1,6 @@
 MultiCluster:
 	Inherits: ^DefaultMissile
-	ValidTargets: Ground, Water, Air
+	ValidTargets: Ground, Water, Air, Trees
 	Projectile: Missile
 		MaximumLaunchSpeed: 120
 		Inaccuracy: 1c0
@@ -14,7 +14,7 @@ MultiCluster:
 	Warhead@1Dam: SpreadDamage
 		Spread: 216
 		Damage: 13000
-		ValidTargets: Ground, Water, Air
+		ValidTargets: Ground, Water, Air, Trees
 		Versus:
 			None: 100
 			Wood: 85
@@ -34,7 +34,7 @@ ClusterMissile:
 		Spread: 512
 		Falloff: 100, 100, 0
 		Damage: 26000
-		ValidTargets: Ground, Water, Air
+		ValidTargets: Ground, Water, Air, Trees
 		Versus:
 			None: 100
 			Wood: 85
@@ -69,7 +69,7 @@ SuicideBomb:
 		ValidTargets: Vehicle, Building, Defense, Infantry
 
 IonCannon:
-	ValidTargets: Ground, Water, Air
+	ValidTargets: Ground, Water, Air, Trees
 	Warhead@1Dam_impact: SpreadDamage
 		Spread: 1c0
 		Damage: 10000
@@ -81,7 +81,7 @@ IonCannon:
 		Damage: 25000
 		Falloff: 100, 50, 25, 0
 		Delay: 3
-		ValidTargets: Ground, Water, Air
+		ValidTargets: Ground, Water, Air, Trees
 		DamageTypes: Prone50Percent, TriggerProne, EnergyDeath
 	Warhead@3Smu_area: LeaveSmudge
 		SmudgeType: SmallScorch