multiple world wip

Assets/IsoTools/Examples/Scenes/Scene10.unity

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   m_IsPrefabParent: 0
+--- !u!4 &2135046319 stripped
+Transform:
+  m_PrefabParentObject: {fileID: 417424, guid: 185575a05f87743c0b2ddb83dd39c6cd, type: 2}
+  m_PrefabInternal: {fileID: 2135046318}

Assets/IsoTools/Scripts/Internal/Editor/IsoObjectEditor.cs

@@ -24,12 +24,10 @@ namespace IsoTools.Internal {
 			var iso_world = IsoWorld.Instance;
 			if ( iso_world ) {
 				_positions = targets
-					.Where(p => p is IsoObject)
+					.OfType<IsoObject>()
-					.Select(p => p as IsoObject)
 					.ToDictionary(p => p, p => p.transform.position);
 				_isoZPositions = targets
-					.Where(p => p is IsoObject)
+					.OfType<IsoObject>()
-					.Select(p => p as IsoObject)
 					.ToDictionary(p => p, p => p.position.z);
 				_center = _viewCenter = _positions.Aggregate(Vector3.zero, (AccIn, p) => {
 					return AccIn + IsoUtils.Vec3FromVec2(iso_world.IsoToScreen(p.Key.position + p.Key.size * 0.5f));
@@ -72,6 +70,18 @@ namespace IsoTools.Internal {
 			}
 		}
 
+		void DrawSelfInfoProperties() {
+			var iso_objects = targets.OfType<IsoObject>();
+			if ( iso_objects.Count() > 0 ) {
+				var mixed_world = iso_objects.GroupBy(p => p.isoWorld).Count() > 1;
+				IsoEditorUtils.DoWithEnabledGUI(false, () => {
+					IsoEditorUtils.DoWithMixedValue(mixed_world, () => {
+						EditorGUILayout.ObjectField("Current Object World", iso_objects.First().isoWorld, typeof(IsoWorld), true);
+					});
+				});
+			}
+		}
+
 		static bool SnappingProcess(ref float min_a, float size_a, float min_b, float size_b) {
 			var max_a  = min_a + size_a;
 			var max_b  = min_b + size_b;
@@ -350,6 +360,7 @@ namespace IsoTools.Internal {
 			GrabPositions();
 			DirtyTargetPosition();
 			DrawWorldEditorProperties();
+			DrawSelfInfoProperties();
 		}
 	}
 }

Assets/IsoTools/Scripts/Internal/Editor/IsoSnappingParentEditor.cs

@@ -17,8 +17,7 @@ namespace IsoTools.Internal {
 			var iso_world = IsoWorld.Instance;
 			if ( iso_world ) {
 				_parents = targets
-					.Where(p => p is IsoSnappingParent)
+					.OfType<IsoSnappingParent>()
-					.Select(p => p as IsoSnappingParent)
 					.ToDictionary(p => p, p => p.transform.position);
 				foreach ( var parent in _parents ) {
 					var iso_objects = parent.Key.GetComponentsInChildren<IsoObject>(true);

Assets/IsoTools/Scripts/Internal/IsoHolder.cs

@@ -0,0 +1,74 @@
+using UnityEngine;
+using System.Collections.Generic;
+
+namespace IsoTools.Internal {
+	public abstract class IsoHolder<THold, TInst> : MonoBehaviour
+		where THold : IsoHolder   <THold, TInst>
+		where TInst : IsoInstance <THold, TInst>
+	{
+		IsoAssocList<TInst> _instances     = new IsoAssocList<TInst>();
+		static List<TInst>  _tempInstances = new List<TInst>();
+
+		// ---------------------------------------------------------------------
+		//
+		// Private
+		//
+		// ---------------------------------------------------------------------
+
+		void RecacheChildrenHolders() {
+			GetComponentsInChildren<TInst>(false, _tempInstances);
+			for ( int i = 0, e = _tempInstances.Count; i < e; ++i ) {
+				_tempInstances[i].RecacheHolder();
+			}
+			_tempInstances.Clear();
+		}
+
+		// ---------------------------------------------------------------------
+		//
+		// Internal
+		//
+		// ---------------------------------------------------------------------
+
+		public bool IsActive() {
+			return isActiveAndEnabled && gameObject.activeInHierarchy;
+		}
+
+		public void AddInstance(TInst instance) {
+			if ( instance != null && instance.IsActive() ) {
+				_instances.Add(instance);
+				OnAddInstanceToHolder(instance);
+			}
+		}
+
+		public void RemoveInstance(TInst instance) {
+			if ( instance != null ) {
+				_instances.Remove(instance);
+				OnRemoveInstanceFromHolder(instance);
+			}
+		}
+
+		protected IsoAssocList<TInst> GetInstances() {
+			return _instances;
+		}
+
+		// ---------------------------------------------------------------------
+		//
+		// Virtual
+		//
+		// ---------------------------------------------------------------------
+
+		protected virtual void OnEnable() {
+			RecacheChildrenHolders();
+		}
+
+		protected virtual void OnDisable() {
+			RecacheChildrenHolders();
+		}
+
+		protected virtual void OnAddInstanceToHolder(TInst instance) {
+		}
+
+		protected virtual void OnRemoveInstanceFromHolder(TInst instance) {
+		}
+	}
+}

Assets/IsoTools/Scripts/Internal/IsoHolder.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 4963ce054813647fa8324abd50969d0a
+timeCreated: 1481918461
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/IsoTools/Scripts/Internal/IsoInstance.cs

@@ -0,0 +1,72 @@
+using UnityEngine;
+using System.Collections.Generic;
+
+namespace IsoTools.Internal {
+	public abstract class IsoInstance<THold, TInst> : MonoBehaviour
+		where THold : IsoHolder   <THold, TInst>
+		where TInst : IsoInstance <THold, TInst>
+	{
+		THold              _holder      = null;
+		static List<THold> _tempHolders = new List<THold>();
+
+		// ---------------------------------------------------------------------
+		//
+		// Internal
+		//
+		// ---------------------------------------------------------------------
+
+		public bool IsActive() {
+			return isActiveAndEnabled && gameObject.activeInHierarchy;
+		}
+
+		public void ResetHolder() {
+			if ( _holder ) {
+				_holder.RemoveInstance(this as TInst);
+				_holder = null;
+			}
+		}
+
+		public void RecacheHolder() {
+			ResetHolder();
+			if ( IsActive() ) {
+				GetComponentsInParent<THold>(false, _tempHolders);
+				for ( int i = 0, e = _tempHolders.Count; i < e; ++i ) {
+					var holder = _tempHolders[i];
+					if ( holder.IsActive() ) {
+						_holder = holder;
+						break;
+					}
+				}
+				_tempHolders.Clear();
+			}
+			if ( _holder ) {
+				_holder.AddInstance(this as TInst);
+			}
+		}
+
+		protected THold GetHolder() {
+			if ( !_holder ) {
+				RecacheHolder();
+			}
+			return _holder;
+		}
+
+		// ---------------------------------------------------------------------
+		//
+		// Messages
+		//
+		// ---------------------------------------------------------------------
+
+		protected virtual void OnEnable() {
+			RecacheHolder();
+		}
+
+		protected virtual void OnDisable() {
+			ResetHolder();
+		}
+
+		protected virtual void OnTransformParentChanged() {
+			RecacheHolder();
+		}
+	}
+}

Assets/IsoTools/Scripts/Internal/IsoInstance.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 999fb85120b0d4fafaf990b86d3eb23b
+timeCreated: 1481914140
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/IsoTools/Scripts/IsoObject.cs

@@ -9,7 +9,7 @@ using UnityEditor;
 namespace IsoTools {
 	[SelectionBase]
 	[ExecuteInEditMode, DisallowMultipleComponent]
-	public class IsoObject : MonoBehaviour {
+	public sealed class IsoObject : IsoInstance<IsoWorld, IsoObject> {
 
 		// ---------------------------------------------------------------------
 		//
@@ -214,13 +214,9 @@ namespace IsoTools {
 		//
 		// ---------------------------------------------------------------------
 
-		IsoWorld _isoWorld = null;
 		public IsoWorld isoWorld {
 			get {
-				if ( !_isoWorld && gameObject.activeInHierarchy ) {
+				return GetHolder();
-					_isoWorld = IsoWorld.Instance;
-				}
-				return _isoWorld;
 			}
 		}
 
@@ -261,6 +257,8 @@ namespace IsoTools {
 				var b = iso_world.IsoToScreen(position).y;
 				var t = iso_world.IsoToScreen(position + size).y;
 				Internal.ScreenBounds = new IsoRect(l, b, r, t);
+			} else {
+				Internal.ScreenBounds = IsoRect.zero;
 			}
 		}
 
@@ -294,19 +292,20 @@ namespace IsoTools {
 			FixIsoPosition();
 		}
 
-		void OnEnable() {
+		protected override void OnEnable() {
-			var iso_world = isoWorld;
+			base.OnEnable();
-			if ( iso_world ) {
-				iso_world.AddIsoObject(this);
-			}
 			MartDirtyIsoWorld();
 		}
 
-		void OnDisable() {
+		protected override void OnDisable() {
-			var iso_world = isoWorld;
+			base.OnDisable();
-			if ( iso_world ) {
+		}
-				iso_world.RemoveIsoObject(this);
+
-			}
+		protected override void OnTransformParentChanged() {
+			base.OnTransformParentChanged();
+			FixCachedProperties();
+			FixLastProperties();
+			FixTransform();
 		}
 
 	#if UNITY_EDITOR

Assets/IsoTools/Scripts/IsoWorld.cs

@@ -12,13 +12,12 @@ using UnityEngine.Profiling;
 
 namespace IsoTools {
 	[ExecuteInEditMode, DisallowMultipleComponent]
-	public class IsoWorld : MonoBehaviour {
+	public sealed class IsoWorld : IsoHolder<IsoWorld, IsoObject> {
 
 		static IsoWorld         _instance     = null;
 
 		bool                    _dirty        = false;
 		Vector2                 _minXY        = Vector2.zero;
-		IsoAssocList<IsoObject> _objects      = new IsoAssocList<IsoObject>();
 		IsoAssocList<IsoObject> _visibles     = new IsoAssocList<IsoObject>();
 		IsoAssocList<IsoObject> _oldVisibles  = new IsoAssocList<IsoObject>();
 
@@ -362,39 +361,6 @@ namespace IsoTools {
 			}
 		}
 
-		public void AddIsoObject(IsoObject iso_object) {
-			_objects.Add(iso_object);
-			if ( iso_object.cacheRenderers ) {
-				iso_object.UpdateCachedRenderers();
-			}
-		}
-
-		public void RemoveIsoObject(IsoObject iso_object) {
-			if ( iso_object.cacheRenderers ) {
-				iso_object.ClearCachedRenderers();
-			}
-			ClearIsoObjectDepends(iso_object);
-			_objects.Remove(iso_object);
-			_visibles.Remove(iso_object);
-			_oldVisibles.Remove(iso_object);
-		}
-
-		void GrabEnabledIsoObjects() {
-			var iso_objects = FindObjectsOfType<IsoObject>();
-			for ( int i = 0, e = iso_objects.Length; i < e; ++i ) {
-				var iso_object = iso_objects[i];
-				if ( iso_object.enabled ) {
-					AddIsoObject(iso_object);
-				}
-			}
-		}
-
-		void DropIsoObjects() {
-			while ( _objects.Count > 0 ) {
-				RemoveIsoObject(_objects.Peek());
-			}
-		}
-
 		// ---------------------------------------------------------------------
 		//
 		// Private
@@ -416,8 +382,9 @@ namespace IsoTools {
 		}
 
 		void FixAllTransforms() {
-			for ( int i = 0, e = _objects.Count; i < e; ++i ) {
+			var instances = GetInstances();
-				_objects[i].FixTransform();
+			for ( int i = 0, e = instances.Count; i < e; ++i ) {
+				instances[i].FixTransform();
 			}
 		}
 
@@ -442,15 +409,6 @@ namespace IsoTools {
 			return false;
 		}
 
-		List<Renderer> GetIsoObjectRenderers(IsoObject iso_object) {
-			if ( iso_object.cacheRenderers ) {
-				return iso_object.Internal.Renderers;
-			} else {
-				iso_object.GetComponentsInChildren<Renderer>(_tmpRenderers);
-				return _tmpRenderers;
-			}
-		}
-
 		IsoMinMax IsoObjectMinMax3D(IsoObject iso_object) {
 			bool inited    = false;
 			var  result    = IsoMinMax.zero;
@@ -478,6 +436,15 @@ namespace IsoTools {
 			return inited ? result : IsoMinMax.zero;
 		}
 
+		List<Renderer> GetIsoObjectRenderers(IsoObject iso_object) {
+			if ( iso_object.cacheRenderers ) {
+				return iso_object.Internal.Renderers;
+			} else {
+				iso_object.GetComponentsInChildren<Renderer>(_tmpRenderers);
+				return _tmpRenderers;
+			}
+		}
+
 		bool IsIsoObjectVisible(IsoObject iso_object) {
 			var renderers = GetIsoObjectRenderers(iso_object);
 			for ( int i = 0, e = renderers.Count; i < e; ++i ) {
@@ -495,15 +462,29 @@ namespace IsoTools {
 			if ( a_yesno ) {
 				var b_yesno = b_max.x > a_min.x && b_max.y > a_min.y && a_max.z > b_min.z;
 				if ( b_yesno ) {
-					var da_p = new Vector3(a_max.x - b_min.x, a_max.y - b_min.y, b_max.z - a_min.z);
+
-					var db_p = new Vector3(b_max.x - a_min.x, b_max.y - a_min.y, a_max.z - b_min.z);
+					//var da_p = new Vector3(a_max.x - b_min.x, a_max.y - b_min.y, b_max.z - a_min.z);
-					var dp_p = a_size + b_size - IsoUtils.Vec3Abs(da_p - db_p);
+					//var db_p = new Vector3(b_max.x - a_min.x, b_max.y - a_min.y, a_max.z - b_min.z);
-					if ( dp_p.x <= dp_p.y && dp_p.x <= dp_p.z ) {
+					//var dp_p = a_size + b_size - IsoUtils.Vec3Abs(da_p - db_p);
-						return da_p.x > db_p.x;
+
-					} else if ( dp_p.y <= dp_p.x && dp_p.y <= dp_p.z ) {
+					var dA_x = a_max.x - b_min.x;
-						return da_p.y > db_p.y;
+					var dA_y = a_max.y - b_min.y;
+					var dA_z = b_max.z - a_min.z;
+
+					var dB_x = b_max.x - a_min.x;
+					var dB_y = b_max.y - a_min.y;
+					var dB_z = a_max.z - b_min.z;
+
+					var dP_x = a_size.x + b_size.x - Mathf.Abs(dA_x - dB_x);
+					var dP_y = a_size.y + b_size.y - Mathf.Abs(dA_y - dB_y);
+					var dP_z = a_size.z + b_size.z - Mathf.Abs(dA_z - dB_z);
+
+					if ( dP_x <= dP_y && dP_x <= dP_z ) {
+						return dA_x > dB_x;
+					} else if ( dP_y <= dP_x && dP_y <= dP_z ) {
+						return dA_y > dB_y;
 					} else {
-						return da_p.z > db_p.z;
+						return dA_z > dB_z;
 					}
 				}
 			}
@@ -673,10 +654,11 @@ namespace IsoTools {
 
 		void CalculateNewVisibles() {
 			_oldVisibles.Clear();
-			if ( _objects.Count > 0 ) {
+			var instances = GetInstances();
+			if ( instances.Count > 0 ) {
 				_minXY.Set(float.MaxValue, float.MaxValue);
-				for ( int i = 0, e = _objects.Count; i < e; ++i ) {
+				for ( int i = 0, e = instances.Count; i < e; ++i ) {
-					var iso_object     = _objects[i];
+					var iso_object     = instances[i];
 					var iso_object_pos = iso_object.position;
 					if ( _minXY.x > iso_object_pos.x ) {
 						_minXY.x = iso_object_pos.x;
@@ -795,21 +777,38 @@ namespace IsoTools {
 			StepSort();
 		}
 
-		void OnEnable() {
+		protected override void OnEnable() {
-			GrabEnabledIsoObjects();
+			base.OnEnable();
 			_visibles.Clear();
 			_oldVisibles.Clear();
 			_sectors.Clear();
 			MarkDirty();
 		}
 
-		void OnDisable() {
+		protected override void OnDisable() {
-			DropIsoObjects();
+			base.OnDisable();
 			_visibles.Clear();
 			_oldVisibles.Clear();
 			_sectors.Clear();
 		}
 
+		protected override void OnAddInstanceToHolder(IsoObject instance) {
+			base.OnAddInstanceToHolder(instance);
+			if ( instance.cacheRenderers ) {
+				instance.UpdateCachedRenderers();
+			}
+		}
+
+		protected override void OnRemoveInstanceFromHolder(IsoObject instance) {
+			base.OnRemoveInstanceFromHolder(instance);
+			if ( instance.cacheRenderers ) {
+				instance.ClearCachedRenderers();
+			}
+			ClearIsoObjectDepends(instance);
+			_visibles.Remove(instance);
+			_oldVisibles.Remove(instance);
+		}
+
 	#if UNITY_EDITOR
 		void Reset() {
 			tileSize   = DefTileSize;