1 files changed, 46 insertions, 0 deletions
diff --git a/Client/Assets/Behavior Designer/Runtime/Composites/Sequence.cs b/Client/Assets/Behavior Designer/Runtime/Composites/Sequence.cs
new file mode 100644
index 00000000..c82ce730
--- /dev/null
+++ b/Client/Assets/Behavior Designer/Runtime/Composites/Sequence.cs
@@ -0,0 +1,46 @@
+namespace BehaviorDesigner.Runtime.Tasks
+{
+    [TaskDescription("The sequence task is similar to an \"and\" operation. It will return failure as soon as one of its child tasks return failure. " +
+                     "If a child task returns success then it will sequentially run the next task. If all child tasks return success then it will return success.")]
+    [HelpURL("http://www.opsive.com/assets/BehaviorDesigner/documentation.php?id=25")]
+    [TaskIcon("{SkinColor}SequenceIcon.png")]
+    public class Sequence : Composite
+    {
+        // The index of the child that is currently running or is about to run.
+        private int currentChildIndex = 0;
+        // The task status of the last child ran.
+        private TaskStatus executionStatus = TaskStatus.Inactive;
+
+        public override int CurrentChildIndex()
+        {
+            return currentChildIndex;
+        }
+
+        public override bool CanExecute()
+        {
+            // We can continue to execuate as long as we have children that haven't been executed and no child has returned failure.
+            return currentChildIndex < children.Count && executionStatus != TaskStatus.Failure;
+        }
+
+        public override void OnChildExecuted(TaskStatus childStatus)
+        {
+            // Increase the child index and update the execution status after a child has finished running.
+            currentChildIndex++;
+            executionStatus = childStatus;
+        }
+
+        public override void OnConditionalAbort(int childIndex)
+        {
+            // Set the current child index to the index that caused the abort
+            currentChildIndex = childIndex;
+            executionStatus = TaskStatus.Inactive;
+        }
+
+        public override void OnEnd()
+        {
+            // All of the children have run. Reset the variables back to their starting values.
+            executionStatus = TaskStatus.Inactive;
+            currentChildIndex = 0;
+        }
+    }
+}
+\ No newline at end of file