From 97da432c35b8c7aaf9dd2c39e2aa4b1f55f36065 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Wed, 27 Jan 2021 16:15:06 +0800
Subject: +behaviour designer

---
 .../Runtime/Composites/ParallelSelector.cs         | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 Client/Assets/Behavior Designer/Runtime/Composites/ParallelSelector.cs

(limited to 'Client/Assets/Behavior Designer/Runtime/Composites/ParallelSelector.cs')

diff --git a/Client/Assets/Behavior Designer/Runtime/Composites/ParallelSelector.cs b/Client/Assets/Behavior Designer/Runtime/Composites/ParallelSelector.cs
new file mode 100644
index 00000000..13e6624a
--- /dev/null
+++ b/Client/Assets/Behavior Designer/Runtime/Composites/ParallelSelector.cs	
@@ -0,0 +1,87 @@
+namespace BehaviorDesigner.Runtime.Tasks
+{
+    [TaskDescription("Similar to the selector task, the parallel selector task will return success as soon as a child task returns success. " +
+                     "The difference is that the parallel task will run all of its children tasks simultaneously versus running each task one at a time. " +
+                     "If one tasks returns success the parallel selector task will end all of the child tasks and return success. " +
+                     "If every child task returns failure then the parallel selector task will return failure.")]
+    [HelpURL("http://www.opsive.com/assets/BehaviorDesigner/documentation.php?id=28")]
+    [TaskIcon("{SkinColor}ParallelSelectorIcon.png")]
+    public class ParallelSelector : Composite
+    {
+        // The index of the child that is currently running or is about to run.
+        private int currentChildIndex;
+        // The task status of every child task.
+        private TaskStatus[] executionStatus;
+
+        public override void OnAwake()
+        {
+            // Create a new task status array that will hold the execution status of all of the children tasks.
+            executionStatus = new TaskStatus[children.Count];
+        }
+
+        public override void OnChildStarted(int childIndex)
+        {
+            // One of the children has started to run. Increment the child index and set the current task status of that child to running.
+            currentChildIndex++;
+            executionStatus[childIndex] = TaskStatus.Running;
+        }
+
+        public override bool CanRunParallelChildren()
+        {
+            // This task can run parallel children.
+            return true;
+        }
+
+        public override int CurrentChildIndex()
+        {
+            return currentChildIndex;
+        }
+
+        public override bool CanExecute()
+        {
+            // We can continue executing if we have more children that haven't been started yet.
+            return currentChildIndex < children.Count;
+        }
+
+        public override void OnChildExecuted(int childIndex, TaskStatus childStatus)
+        {
+            // One of the children has finished running. Set the task status.
+            executionStatus[childIndex] = childStatus;
+        }
+
+        public override void OnConditionalAbort(int childIndex)
+        {
+            // Start from the beginning on an abort
+            currentChildIndex = 0;
+            for (int i = 0; i < executionStatus.Length; ++i) {
+                executionStatus[i] = TaskStatus.Inactive;
+            }
+        }
+
+        public override TaskStatus OverrideStatus(TaskStatus status)
+        {
+            // Assume all of the children have finished executing. Loop through the execution status of every child and check to see if any tasks are currently running
+            // or succeeded. If a task is still running then all of the children are not done executing and the parallel selector task should continue to return a task status of running.
+            // If a task succeeded then return success. The Behavior Manager will stop all of the children tasks. If no child task is running or has succeeded then the parallel selector
+            // task failed and it will return failure.
+            bool childrenComplete = true;
+            for (int i = 0; i < executionStatus.Length; ++i) {
+                if (executionStatus[i] == TaskStatus.Running) {
+                    childrenComplete = false;
+                } else if (executionStatus[i] == TaskStatus.Success) {
+                    return TaskStatus.Success;
+                }
+            }
+            return (childrenComplete ? TaskStatus.Failure : TaskStatus.Running);
+        }
+
+        public override void OnEnd()
+        {
+            // Reset the execution status and the child index back to their starting values.
+            for (int i = 0; i < executionStatus.Length; ++i) {
+                executionStatus[i] = TaskStatus.Inactive;
+            }
+            currentChildIndex = 0;
+        }
+    }
+}
\ No newline at end of file
-- 
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