Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Mods.Common/Graphics/ActorPreview.cs

@@ -0,0 +1,159 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * 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;
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Graphics
+{
+	public interface IActorPreview
+	{
+		void Tick();
+		IEnumerable<IRenderable> Render(WorldRenderer wr, WPos pos);
+		IEnumerable<IRenderable> RenderUI(WorldRenderer wr, int2 pos, float scale);
+		IEnumerable<Rectangle> ScreenBounds(WorldRenderer wr, WPos pos);
+	}
+
+	public class ActorPreviewInitializer : IActorInitializer
+	{
+		public readonly ActorInfo Actor;
+		public readonly WorldRenderer WorldRenderer;
+		public World World => WorldRenderer.World;
+
+		readonly ActorReference reference;
+
+		public ActorPreviewInitializer(ActorInfo actor, WorldRenderer worldRenderer, TypeDictionary dict)
+		{
+			Actor = actor;
+			WorldRenderer = worldRenderer;
+			reference = new ActorReference(actor.Name.ToLowerInvariant(), dict);
+		}
+
+		public ActorPreviewInitializer(ActorReference actor, WorldRenderer worldRenderer)
+		{
+			Actor = worldRenderer.World.Map.Rules.Actors[actor.Type.ToLowerInvariant()];
+			reference = actor;
+			WorldRenderer = worldRenderer;
+		}
+
+		// Forward IActorInitializer queries to the actor reference
+		// ActorReference can't reference a World instance, which prevents it from implementing this directly.
+		public T GetOrDefault<T>(TraitInfo info) where T : ActorInit { return reference.GetOrDefault<T>(info); }
+		public T Get<T>(TraitInfo info) where T : ActorInit { return reference.Get<T>(info); }
+		public U GetValue<T, U>(TraitInfo info) where T : ValueActorInit<U> { return reference.GetValue<T, U>(info); }
+		public U GetValue<T, U>(TraitInfo info, U fallback) where T : ValueActorInit<U> { return reference.GetValue<T, U>(info, fallback); }
+		public bool Contains<T>(TraitInfo info) where T : ActorInit { return reference.Contains<T>(info); }
+		public T GetOrDefault<T>() where T : ActorInit, ISingleInstanceInit { return reference.GetOrDefault<T>(); }
+		public T Get<T>() where T : ActorInit, ISingleInstanceInit { return reference.Get<T>(); }
+		public U GetValue<T, U>() where T : ValueActorInit<U>, ISingleInstanceInit { return reference.GetValue<T, U>(); }
+		public U GetValue<T, U>(U fallback) where T : ValueActorInit<U>, ISingleInstanceInit { return reference.GetValue<T, U>(fallback); }
+		public bool Contains<T>() where T : ActorInit, ISingleInstanceInit { return reference.Contains<T>(); }
+
+		public Func<WRot> GetOrientation()
+		{
+			var facingInfo = Actor.TraitInfoOrDefault<IFacingInfo>();
+			if (facingInfo == null)
+				return () => WRot.None;
+
+			WAngle facing;
+
+			var mobileInfo = Actor.TraitInfoOrDefault<MobileInfo>();
+			var location = reference.GetOrDefault<LocationInit>();
+			if (location == null || mobileInfo == null || mobileInfo.TerrainOrientationAdjustmentMargin.Length < 0)
+			{
+				// Dynamic facing takes priority.
+				var dynamicInit = reference.GetOrDefault<DynamicFacingInit>();
+				if (dynamicInit != null)
+				{
+					var getFacing = dynamicInit.Value;
+					return () => WRot.FromYaw(getFacing());
+				}
+				else
+				{
+					// Fall back to initial actor facing if an Init isn't available.
+					var facingInit = reference.GetOrDefault<FacingInit>();
+					facing = facingInit != null ? facingInit.Value : facingInfo.GetInitialFacing();
+					return () => WRot.FromYaw(facing);
+				}
+			}
+
+			var orientationInit = reference.GetOrDefault<TerrainOrientationInit>();
+			var terrainOrientation = orientationInit != null ? orientationInit.Value : World.Map.TerrainOrientation(location.Value);
+			var normalVector = new WVec(0, 0, 1024).Rotate(terrainOrientation);
+
+			// Duplicated as to make more efficient delegates.
+			{
+				// Dynamic facing takes priority.
+				var dynamicInit = reference.GetOrDefault<DynamicFacingInit>();
+				if (dynamicInit != null)
+				{
+					var getFacing = dynamicInit.Value;
+					return () => terrainOrientation + new WRot(normalVector, getFacing());
+				}
+				else
+				{
+					// Fall back to initial actor facing if an Init isn't available.
+					var facingInit = reference.GetOrDefault<FacingInit>();
+					facing = facingInit != null ? facingInit.Value : facingInfo.GetInitialFacing();
+					return () => terrainOrientation + new WRot(normalVector, facing);
+				}
+			}
+		}
+
+		public Func<WAngle> GetFacing()
+		{
+			var facingInfo = Actor.TraitInfoOrDefault<IFacingInfo>();
+			if (facingInfo == null)
+				return () => WAngle.Zero;
+
+			// Dynamic facing takes priority
+			var dynamicInit = reference.GetOrDefault<DynamicFacingInit>();
+			if (dynamicInit != null)
+				return dynamicInit.Value;
+
+			// Fall back to initial actor facing if an Init isn't available
+			var facingInit = reference.GetOrDefault<FacingInit>();
+			var facing = facingInit != null ? facingInit.Value : facingInfo.GetInitialFacing();
+			return () => facing;
+		}
+
+		public DamageState GetDamageState()
+		{
+			var health = reference.GetOrDefault<HealthInit>();
+
+			if (health == null)
+				return DamageState.Undamaged;
+
+			var hf = health.Value;
+
+			if (hf <= 0)
+				return DamageState.Dead;
+
+			if (hf < 25)
+				return DamageState.Critical;
+
+			if (hf < 50)
+				return DamageState.Heavy;
+
+			if (hf < 75)
+				return DamageState.Medium;
+
+			if (hf < 100)
+				return DamageState.Light;
+
+			return DamageState.Undamaged;
+		}
+	}
+}