add unity behavior tree package & examples

add start of own implementation of a behavior tree
2025-04-23 12:33:28 +02:00
parent 8a01366c35
commit d9fb5ee7bc
19 changed files with 232 additions and 17 deletions
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 2c6bdc0b9db0433e939c2e77844106f1
+timeCreated: 1745402938
@@ -0,0 +1,9 @@
+namespace DefaultNamespace.BehaviorTree
+{
+    public abstract class Action : Node
+    {
+        public Action()
+        {
+        }
+    }
+}
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: d658db48a0944051aa2a4a2fa02e089c
+timeCreated: 1745403146
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+using System.Collections.Generic;
+
+namespace DefaultNamespace.BehaviorTree
+{
+    public class Composite : Node
+    {
+        public Composite(List<Node> nodes)
+        {
+            _nodes.AddRange(nodes);
+        }
+
+        public Composite(params Node[] nodes)
+        {
+            _nodes.AddRange(nodes);
+        }
+    }
+}
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 975b1d6c26eb459d9a8cdd3e042b6674
+timeCreated: 1745403206
@@ -0,0 +1,7 @@
+namespace DefaultNamespace.BehaviorTree
+{
+    public abstract class Condition : Action
+    {
+        
+    }
+}
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: a2d064fe5d964df7aa50ae36e8551561
+timeCreated: 1745403415
@@ -0,0 +1,19 @@
+namespace DefaultNamespace.BehaviorTree
+{
+    public class Decorator : Node
+    {
+        public Node Node
+        {
+            get
+            {
+                if (_nodes != null && _nodes.Count > 0) return _nodes[0];
+                return null;
+            }
+        }
+
+        public Decorator(Node node)
+        {
+            _nodes.Add(node);
+        }
+    }
+}
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: f064dd30dc4940009b32f253d2f6ec34
+timeCreated: 1745403277
@@ -0,0 +1,31 @@
+using System.Collections.Generic;
+
+namespace DefaultNamespace.BehaviorTree
+{
+    public abstract class Node
+    {
+        protected List<Node> _nodes = new();
+
+        public virtual void Start()
+        {
+            
+        }
+
+        public virtual Status Update()
+        {
+            return Status.Success;
+        }
+
+        public virtual void End()
+        {
+            
+        }
+    }
+
+    public enum Status
+    {
+        Success,
+        Failure,
+        Running,
+    }
+}
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: bb191187e8a246b29358c9eca60e18ea
+timeCreated: 1745403053
@@ -0,0 +1,42 @@
+using System;
+
+namespace DefaultNamespace.BehaviorTree
+{
+    public class Sequence : Composite
+    {
+        protected int _currentIndex;
+        protected Node _currentNode;
+
+        public override void Start()
+        {
+            _currentIndex = 0;
+            _currentNode = _currentIndex >= _nodes.Count ? null : _nodes[_currentIndex];
+            _currentNode?.Start();
+        }
+
+        public override Status Update()
+        {
+            if (_currentNode == null) return Status.Failure;
+            
+            Status status = _currentNode.Update();
+
+            switch (status)
+            {
+                case Status.Success:
+                    _currentNode.End();
+                    _currentIndex++;
+                    if (_currentIndex >= _nodes.Count) return Status.Success;
+                    _currentNode = _nodes[_currentIndex];
+                    _currentNode.Start();
+                    return Status.Running;
+                case Status.Failure:
+                    _currentNode.End();
+                    return Status.Failure;
+                case Status.Running:
+                    return Status.Running;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+    }
+}
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 39476da0e0a54e429221ed45a8c2cf0f
+timeCreated: 1745403452
@@ -0,0 +1,28 @@
+using System;
+using UnityEngine;
+
+namespace DefaultNamespace.BehaviorTree
+{
+    public class Tree : MonoBehaviour
+    {
+        private Node _rootNode;
+
+        private void OnEnable()
+        {
+            if (_rootNode == null) return;
+            _rootNode.Start();
+        }
+
+        private void Update()
+        {
+            if (_rootNode == null) return;
+            _rootNode.Update();
+        }
+
+        private void OnDisable()
+        {
+            if (_rootNode == null) return;
+            _rootNode.End();
+        }
+    }
+}
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 1de9a2c205bb40fb9770d0639fb89abe
+timeCreated: 1745402959