first commit

Assets/Materials/com.gleechi.unity.virtualgrasp/Samples/Onboarding/Scripts/SimpleImpact.cs

@@ -0,0 +1,50 @@
+// Copyright (C) 2014-2024 Gleechi Technology AB. All rights reserved.
+
+using UnityEngine;
+
+namespace VirtualGrasp.Onboarding
+{
+    public class SimpleImpact : MonoBehaviour
+    {
+        public AudioSource collisionEffect;
+
+        private float unityVelocityThreshold = 1.0F;
+        private float calculatedVelocityThreshold = .1F;
+
+        ArticulationBody ownAB = null;
+        Rigidbody ownRB = null;
+
+        private void Start()
+        {
+            gameObject.TryGetComponent<Rigidbody>(out ownRB);
+            gameObject.TryGetComponent<ArticulationBody>(out ownAB);
+        }
+
+        private void OnCollisionEnter(Collision collision)
+        {
+            if (collision.relativeVelocity.magnitude > 0) // sometimes we're lucky. unity calculates speed for us
+            {
+                if (collision.relativeVelocity.magnitude > unityVelocityThreshold)
+                    collisionEffect.Play();
+            }
+            else if (
+#if UNITY_2020_3_16_OR_NEWER
+            collision.body != null &&
+#endif
+                (ownRB != null || ownAB != null))
+            { // sometimes we're not lucky, have to calculate
+                Vector3 ownSpeed = ownRB != null ? ownRB.velocity : ownAB.velocity;
+                Vector3 colliderSpeed = Vector3.zero;
+#if UNITY_2020_3_16_OR_NEWER
+            if (collision.rigidbody != null) colliderSpeed = collision.rigidbody.velocity;
+            else if (collision.articulationBody != null) colliderSpeed = collision.articulationBody.velocity;
+#else
+                if (collision.rigidbody != null) colliderSpeed = collision.rigidbody.velocity;
+#endif
+
+                if ((ownSpeed - colliderSpeed).magnitude > calculatedVelocityThreshold)
+                    collisionEffect.Play();
+            }
+        }
+    }
+}