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Assets/Plugins/RootMotion/FinalIK/IK Components/IKExecutionOrder.cs

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+using UnityEngine;
+using System.Collections;
+
+namespace RootMotion.FinalIK {
+
+	/// <summary>
+	/// Manages the execution order of IK components.
+	/// </summary>
+	public class IKExecutionOrder : MonoBehaviour {
+
+		/// <summary>
+		/// The IK components, assign in the order in which you wish to update them.
+		/// </summary>
+		[Tooltip("The IK components, assign in the order in which you wish to update them.")]
+		public IK[] IKComponents;
+
+		[Tooltip("Optional. Assign it if you are using 'Animate Physics' as the Update Mode.")]
+		/// <summary>
+		/// Optional. Assign it if you are using 'Animate Physics' as the Update Mode.
+		/// </summary>
+		public Animator animator;
+
+		private bool fixedFrame;
+
+		private bool animatePhysics {
+			get {
+				if (animator == null) return false;
+				return animator.updateMode == AnimatorUpdateMode.AnimatePhysics;
+			}
+		}
+
+		// Disable the IK components
+		void Start() {
+			for (int i = 0; i < IKComponents.Length; i++) IKComponents[i].enabled = false;
+		}
+
+		// Fix Transforms in Normal update mode
+		void Update() {
+			if (animatePhysics) return;
+
+			FixTransforms ();
+		}
+
+		// Fix Transforms in Animate Physics update mode
+		void FixedUpdate() {
+			fixedFrame = true;
+
+			if (animatePhysics) FixTransforms ();
+		}
+
+		// Update the IK components in a specific order
+		void LateUpdate() {
+			if (!animatePhysics || fixedFrame) {
+				for (int i = 0; i < IKComponents.Length; i++) {
+					IKComponents [i].GetIKSolver ().Update ();
+				}
+
+				fixedFrame = false;
+			}
+		}
+
+		private void FixTransforms() {
+			for (int i = 0; i < IKComponents.Length; i++) {
+				if (IKComponents[i].fixTransforms) IKComponents[i].GetIKSolver().FixTransforms();
+			}
+		}
+	}
+}