From 0a822dcd79803cc89c29b6ad979c527af1551644 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20L=C3=BCbe=C3=9F?= <simon.luebess@gmail.com>
Date: Mon, 19 Feb 2024 21:39:07 +0100
Subject: [PATCH] ScriptCore: Added Transform.WorldTransform

---
 GlitchyEngine/src/Scripting/ScriptGlue.bf | 37 +++++++++++++++++++++++
 ScriptCore/Core/Transform.cs              | 13 ++++++++
 ScriptCore/ScriptGlue.cs                  |  6 ++++
 3 files changed, 56 insertions(+)

diff --git a/GlitchyEngine/src/Scripting/ScriptGlue.bf b/GlitchyEngine/src/Scripting/ScriptGlue.bf
index 1dfbbe6..992a05a 100644
--- a/GlitchyEngine/src/Scripting/ScriptGlue.bf
+++ b/GlitchyEngine/src/Scripting/ScriptGlue.bf
@@ -506,6 +506,43 @@ static class ScriptGlue
 		}
 		// TODO: we need to handle repositioning of colliders that are children of the entity with rigidbody...
 	}
+
+	[RegisterCall("ScriptGlue::Transform_GetWorldTranslation")]
+	static void Transform_GetWorldTranslation(UUID entityId, out float3 translationWorld)
+	{
+		Entity entity = GetEntitySafe(entityId);
+
+		TransformComponent* transform = entity.Transform;
+
+		translationWorld = transform.WorldTransform.Translation; //(float4(entity.Transform.Position, 1.0f) * entity.Transform.WorldTransform).XYZ;
+	}
+
+	[RegisterCall("ScriptGlue::Transform_SetWorldTranslation")]
+	static void Transform_SetWorldTranslation(UUID entityId, in float3 translation)
+	{
+		Log.ClientLogger.Warning("Transform_SetWorldTranslation is not implemented!");
+
+		// Entity entity = GetEntitySafe(entityId);
+
+		// entity.Transform.Position = translation;
+
+		// // if necessary reposition Rigidbody2D
+		// if (entity.TryGetComponent<Rigidbody2DComponent>(let rigidbody2D))
+		// {
+		// 	rigidbody2D.SetPosition(translation.XY);
+		// }
+		// TODO: we need to handle repositioning of colliders that are children of the entity with rigidbody...
+	}
+
+	[RegisterCall("ScriptGlue::Transform_TransformPointToWorld")]
+	static void Transform_TransformPointToWorld(UUID entityId, float3 point, out float3 pointWorld)
+	{
+		Entity entity = GetEntitySafe(entityId);
+
+		float3 localPoint = entity.Transform.Position;
+
+		pointWorld = (float4(localPoint, 1.0f) * entity.Transform.WorldTransform).XYZ;
+	}
 	
 	[RegisterCall("ScriptGlue::Transform_GetRotation")]
 	static void Transform_GetRotation(UUID entityId, out Quaternion rotation)
diff --git a/ScriptCore/Core/Transform.cs b/ScriptCore/Core/Transform.cs
index 68c12b5..12ede09 100644
--- a/ScriptCore/Core/Transform.cs
+++ b/ScriptCore/Core/Transform.cs
@@ -36,6 +36,19 @@ public class Transform : Component
         }
         set => ScriptGlue.Transform_SetTranslation(Entity.UUID, in value);
     }
+    
+    /// <summary>
+    /// Gets or sets the translation (position) of the entity in global space.
+    /// </summary>
+    public float3 WorldTranslation
+    {
+        get
+        {
+            ScriptGlue.Transform_GetWorldTranslation(Entity.UUID, out float3 translation);
+            return translation;
+        }
+        set => ScriptGlue.Transform_SetWorldTranslation(Entity.UUID, in value);
+    }
 
     /// <summary>
     /// Gets or sets the rotation of the entity.
diff --git a/ScriptCore/ScriptGlue.cs b/ScriptCore/ScriptGlue.cs
index bb59e1f..c7a67a6 100644
--- a/ScriptCore/ScriptGlue.cs
+++ b/ScriptCore/ScriptGlue.cs
@@ -81,6 +81,12 @@ internal static class ScriptGlue
     [MethodImpl(MethodImplOptions.InternalCall)]
     internal static extern void Transform_SetTranslation(UUID entityId, in float3 translation);
     
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    internal static extern void Transform_GetWorldTranslation(UUID entityId, out float3 translation);
+
+    [MethodImpl(MethodImplOptions.InternalCall)]
+    internal static extern void Transform_SetWorldTranslation(UUID entityId, in float3 translation);
+    
     [MethodImpl(MethodImplOptions.InternalCall)]
     internal static extern void Transform_GetRotation(UUID entityId, out Quaternion rotation);