Updated ECSSamples

Author: davidv-unity

ECSSamples/Assets/Advanced/Boids/Scripts/BoidConversion.cs

@@ -7,7 +7,7 @@
 namespace Samples.Boids
 {
     [UpdateInGroup(typeof(GameObjectConversionGroup))]
-    [ConverterVersion("macton", 4)]
+    [ConverterVersion("macton", 5)]
     public class BoidConversion : GameObjectConversionSystem
     {
         protected override void OnUpdate()
@@ -29,10 +29,6 @@ protected override void OnUpdate()
                 // Remove default transform system components
                 DstEntityManager.RemoveComponent<Translation>(entity);
                 DstEntityManager.RemoveComponent<Rotation>(entity);
-
-                // Add world render bounds components so they do not need to be added at initialization time.
-                DstEntityManager.AddComponent(entity, ComponentType.ChunkComponent<ChunkWorldRenderBounds>());
-                DstEntityManager.AddComponent<WorldRenderBounds>(entity);
             });
         }
     }

ECSSamples/Assets/Advanced/GridPath.Tests.meta

@@ -0,0 +1,222 @@
+using System;
+using NUnit.Framework;
+using Unity.Collections;
+using Unity.Collections.LowLevel.Unsafe;
+using Unity.Entities.Tests;
+using Unity.Mathematics;
+
+namespace Samples.GridPath.Tests
+{
+    [TestFixture]
+    unsafe class CartesianGridOnPlaneShortestPathTests : ECSTestsFixture
+    {
+        struct TestGrid : IDisposable
+        {
+            public int RowCount;
+            public int ColCount;
+            public byte* Walls;
+            public int WallRowStride => (ColCount + 1) / 2;
+
+            public TestGrid(int rowCount, int colCount)
+            {
+                RowCount = rowCount;
+                ColCount = colCount;
+                
+                int wallRowStride = (colCount + 1) / 2;
+                int wallsSize = rowCount * wallRowStride;
+
+                Walls = (byte*) UnsafeUtility.Malloc(wallsSize, 16, Allocator.Temp);
+                UnsafeUtility.MemClear(Walls, wallsSize);
+                
+                // Add outer boundary walls.
+                for (var x = 0; x < colCount; x++)
+                    AddWallNorth(new CartesianGridCoordinates {x = (short) x, y = (short) (rowCount - 1)});
+                for (var x = 0; x < colCount; x++)
+                    AddWallSouth(new CartesianGridCoordinates {x = (short) x, y = (short) 0});
+                for (var y = 0; y < rowCount; y++)
+                    AddWallWest(new CartesianGridCoordinates {x = (short) 0, y = (short) y});
+                for (var y = 0; y < rowCount; y++)
+                    AddWallEast(new CartesianGridCoordinates {x = (short) (colCount-1), y = (short) y});
+            }
+
+            public void Dispose()
+            {
+                if (Walls != null)
+                    UnsafeUtility.Free(Walls, Allocator.Temp);
+            }
+
+            public void SetWallBit(int x, int y, CartesianGridDirectionBit directionBit)
+            {
+                if (new CartesianGridCoordinates { x=(short)x, y=(short)y}.OnGrid(RowCount,ColCount))
+                    Walls[y * WallRowStride + (x >> 1)] |= (byte)((byte)directionBit << (4 * (x & 1)));
+            }
+            
+            public bool TestWallBit(int x, int y, CartesianGridDirectionBit directionBit)
+            {
+                if (!(new CartesianGridCoordinates {x = (short) x, y = (short) y}.OnGrid(RowCount, ColCount)))
+                    return false;
+                
+                return (((Walls[y * WallRowStride + (x >> 1)] >> (4 * (x&1))) & (byte)directionBit) == (byte)directionBit);
+            }
+                    
+            public void AddWallNorth(CartesianGridCoordinates cellPosition)
+            {
+                SetWallBit(cellPosition.x, cellPosition.y, CartesianGridDirectionBit.North);
+                SetWallBit(cellPosition.x, cellPosition.y+1, CartesianGridDirectionBit.South);
+            }
+            public void AddWallSouth(CartesianGridCoordinates cellPosition)
+            {
+                SetWallBit(cellPosition.x, cellPosition.y, CartesianGridDirectionBit.South);
+                SetWallBit(cellPosition.x, cellPosition.y-1, CartesianGridDirectionBit.North);
+            }
+            public void AddWallWest(CartesianGridCoordinates cellPosition)
+            {
+                SetWallBit(cellPosition.x, cellPosition.y, CartesianGridDirectionBit.West);
+                SetWallBit(cellPosition.x-1, cellPosition.y, CartesianGridDirectionBit.East);
+            }
+            public void AddWallEast(CartesianGridCoordinates cellPosition)
+            {
+                SetWallBit(cellPosition.x, cellPosition.y, CartesianGridDirectionBit.East);
+                SetWallBit(cellPosition.x+1, cellPosition.y, CartesianGridDirectionBit.West);
+            }
+
+            int WalkPath(CartesianGridCoordinates startPosition, NativeArray<byte> targetDirections, int pathOffset)
+            {
+                var validDirections = CartesianGridOnPlaneShortestPath.LookupDirectionToTarget(startPosition, RowCount, ColCount, targetDirections);
+                var direction = CartesianGridMovement.PathVariation[((pathOffset&3) * 16) + validDirections];
+                
+                if (direction == 0xff) // No path
+                    return 0;
+
+                var nextPosition = new CartesianGridCoordinates();
+                if (direction == 0)
+                    nextPosition = new CartesianGridCoordinates {x = startPosition.x, y = (short) (startPosition.y + 1)};
+                else if (direction == 1)
+                    nextPosition = new CartesianGridCoordinates {x = startPosition.x, y = (short) (startPosition.y - 1)};
+                else if (direction == 2)
+                    nextPosition = new CartesianGridCoordinates {x = (short)(startPosition.x-1), y = (short) startPosition.y};
+                else if (direction == 3)
+                    nextPosition = new CartesianGridCoordinates {x = (short)(startPosition.x+1), y = (short) startPosition.y};
+                else
+                    Assert.Fail();
+                
+                // Test no wall in the direction given
+                if (direction == 0)
+                    Assert.IsFalse(TestWallBit(startPosition.x, startPosition.y, CartesianGridDirectionBit.North));
+                else if (direction == 1)
+                    Assert.IsFalse(TestWallBit(startPosition.x, startPosition.y, CartesianGridDirectionBit.South));
+                else if (direction == 2)
+                    Assert.IsFalse(TestWallBit(startPosition.x, startPosition.y, CartesianGridDirectionBit.West));
+                else if (direction == 3)
+                    Assert.IsFalse(TestWallBit(startPosition.x, startPosition.y, CartesianGridDirectionBit.East));
+
+                return 1 + WalkPath(nextPosition, targetDirections, pathOffset);
+            }
+
+            public int WalkPathDistance(CartesianGridCoordinates sourcePosition, CartesianGridCoordinates targetPosition)
+            {
+                var directionsRowStride = (ColCount + 1) / 2;
+                var directionsSize = RowCount * directionsRowStride;
+                
+                var targetDirections = new NativeArray<byte>(directionsSize, Allocator.Temp);
+                var sourceDirections= new NativeArray<byte>(directionsSize, Allocator.Temp);
+                
+                // For testing purposes, recalculate paths every time.
+                CartesianGridOnPlaneShortestPath.CalculateShortestPathsToTarget(targetDirections, RowCount, ColCount, targetPosition, Walls);
+                CartesianGridOnPlaneShortestPath.CalculateShortestPathsToTarget(sourceDirections, RowCount, ColCount, sourcePosition, Walls);
+                
+                // Test distance form source->target is same as target->source
+                var sourceToTargetDistance = WalkPath(sourcePosition, targetDirections, 0);
+                var targetToSourceDistance = WalkPath(targetPosition, sourceDirections, 0);
+                Assert.AreEqual(sourceToTargetDistance, targetToSourceDistance);
+
+                var expectedDistance = sourceToTargetDistance;
+                    
+                // Sample path variations (not exhaustive, always follow the variation path option)
+                for (int i = 1; i < 4; i++)
+                {
+                    // Test distance form source->target is same as target->source
+                    // Test distance is same for all variations
+                    sourceToTargetDistance = WalkPath(sourcePosition, targetDirections, i);
+                    Assert.AreEqual(expectedDistance, sourceToTargetDistance);
+                    targetToSourceDistance = WalkPath(targetPosition, sourceDirections, i);
+                    Assert.AreEqual(expectedDistance, targetToSourceDistance);
+                }
+                
+                targetDirections.Dispose();
+                sourceDirections.Dispose();
+
+                return expectedDistance;
+            }
+        }
+
+        [Test]
+        public void PathOnEmptyGrid()
+        {
+            using (var grid = new TestGrid(16, 16))
+            {
+                var targetPosition = new CartesianGridCoordinates {x = 15, y = 15};
+                var dist = 0;
+
+                dist = grid.WalkPathDistance(new CartesianGridCoordinates {x = 0, y = 0}, targetPosition);
+                Assert.AreEqual(dist, 30 );
+                dist = grid.WalkPathDistance(new CartesianGridCoordinates {x = 8, y = 7}, targetPosition);
+                Assert.AreEqual(dist, 15 );
+            }
+        }
+        
+        [Test]
+        public void PathOnIsland()
+        {
+            using (var grid = new TestGrid(16, 16))
+            {
+                // create island left/right side
+                for (int y = 0; y < grid.RowCount; y++)
+                    grid.AddWallWest(new CartesianGridCoordinates {x = 8, y = (short)y});
+               
+                var targetPosition = new CartesianGridCoordinates {x = 15, y = 15};
+                var dist = 0;
+                
+                // right side has open path
+                dist = grid.WalkPathDistance(new CartesianGridCoordinates {x = 8, y = 8}, targetPosition);
+                Assert.AreEqual(dist, 14);
+                dist = grid.WalkPathDistance(new CartesianGridCoordinates {x = 8, y = 0}, targetPosition);
+                Assert.AreEqual(dist, 22);
+                
+                // left side blocked
+                dist = grid.WalkPathDistance(new CartesianGridCoordinates {x = 0, y = 8}, targetPosition);
+                Assert.AreEqual(dist, 0);
+                dist = grid.WalkPathDistance(new CartesianGridCoordinates {x = 0, y = 0}, targetPosition);
+                Assert.AreEqual(dist, 0);
+            }
+        }
+        
+        [Test]
+        public void PathRandomObstacles()
+        {
+            using (var grid = new TestGrid(32, 15))
+            {
+                int obstacleCount = 32;
+                var rand = new Unity.Mathematics.Random(0xF545AA3F);
+                for (int i = 0; i < obstacleCount; i++)
+                {
+                    var xy = rand.NextInt2(new int2(grid.ColCount, grid.RowCount));
+                    if (rand.NextBool())
+                        grid.AddWallWest(new CartesianGridCoordinates {x = (short)xy.x, y = (short)xy.y});
+                    else
+                        grid.AddWallSouth(new CartesianGridCoordinates {x = (short)xy.x, y = (short)xy.y});
+                }
+
+                int testCount = 64;
+                for (int i = 0; i < testCount; i++)
+                {
+                    var sourceXY = rand.NextInt2(new int2(grid.ColCount, grid.RowCount));
+                    var targetXY = rand.NextInt2(new int2(grid.ColCount, grid.RowCount));
+                    var sourcePosition = new CartesianGridCoordinates {x = (short)sourceXY.x, y = (short)sourceXY.y};
+                    var targetPosition = new CartesianGridCoordinates {x = (short)targetXY.x, y = (short)targetXY.y};
+                    grid.WalkPathDistance(sourcePosition, targetPosition);
+                }
+            }
+        }
+    }
+}

ECSSamples/Assets/Advanced/GridPath.Tests/CartesianGridOnCubeShortestPathTests.cs

@@ -0,0 +1,27 @@
+{
+    "name": "Samples.GridPath.Tests",
+    "references": [
+        "Unity.Entities",
+        "Unity.Collections",
+        "Unity.Jobs",
+        "Unity.Burst",
+        "Unity.Mathematics",
+        "Unity.Transforms",
+        "Unity.Entities.Tests",
+        "Samples.GridPath"
+    ],
+    "optionalUnityReferences": [
+        "TestAssemblies"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": true,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": []
+}
+

ECSSamples/Assets/Advanced/GridPath.Tests/CartesianGridOnCubeShortestPathTests.cs.meta

@@ -14,7 +14,7 @@ GameObject:
   - component: {fileID: 3139632156233265087}
   - component: {fileID: 8085697106929772112}
   m_Layer: 0
-  m_Name: BasicActor
+  m_Name: BasicActor0
   m_TagString: Untagged
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
@@ -106,5 +106,5 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: ede02fc5d83e4273ad9b2b008f644a5a, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  Version: 3-macton
   Speed: 1.53
+  Movement: 0

ECSSamples/Assets/Advanced/GridPath.Tests/CartesianGridOnPlaneShortestPathTests.cs

@@ -77,5 +77,10 @@ PrefabInstance:
       propertyPath: Speed
       value: 1.93
       objectReference: {fileID: 0}
+    - target: {fileID: 8085697106929772112, guid: 185fc72fe6b8347aa833fe241a0dd4de,
+        type: 3}
+      propertyPath: Movement
+      value: 0
+      objectReference: {fileID: 0}
     m_RemovedComponents: []
   m_SourcePrefab: {fileID: 100100000, guid: 185fc72fe6b8347aa833fe241a0dd4de, type: 3}