ECM2

Assets/ECM2/Walkthrough/6 - Physics/6.2 - Physics Interactions/Scripts/ApplyLandingForce.cs

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+using UnityEngine;
+
+namespace ECM2.Walkthrough.Ex62
+{
+    /// <summary>
+    /// This example extends a Character (through composition) to apply a landing force
+    /// when it lands on a dynamic rigidbody.
+    ///
+    /// The landing force is calculated (characterMass * characterGravity * landingVelocity * landingForceMag)
+    /// and is applied along gravity direction.
+    /// </summary>
+    
+    public class ApplyLandingForce : MonoBehaviour
+    {
+        public float landingForceScale = 1.0f;
+        
+        private Character _character;
+
+        private void Awake()
+        {
+            _character = GetComponent<Character>();
+        }
+
+        private void OnEnable()
+        {
+            _character.Landed += OnLanded;
+        }
+
+        private void OnDisable()
+        {
+            _character.Landed -= OnLanded;
+        }
+
+        private void OnLanded(Vector3 landingVelocity)
+        {
+            Rigidbody groundRigidbody = _character.characterMovement.groundRigidbody;
+            if (!groundRigidbody)
+                return;
+            
+            Vector3 force = _character.GetGravityVector() *
+                            (_character.mass * landingVelocity.magnitude * landingForceScale);
+                
+            groundRigidbody.AddForceAtPosition(force, _character.position);
+        }
+    }
+}