Created
October 20, 2020 19:06
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Object shaker utilising a coroutine. Suitable for shaking all kinds of objects, but also VERY suitable for camera shake effect.
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| using System.Collections; | |
| using UnityEngine; | |
| // Taken from: https://stackoverflow.com/questions/39380901/shake-an-object-back-and-forth-with-easing-at-the-end | |
| public class ObjectShaker : MonoBehaviour | |
| { | |
| public GameObject GameObjectToShake; | |
| bool shaking = false; | |
| IEnumerator shakeGameObjectCOR(GameObject objectToShake, float totalShakeDuration, float decreasePoint, bool objectIs2D = false) | |
| { | |
| if (decreasePoint >= totalShakeDuration) | |
| { | |
| Debug.LogError("decreasePoint must be less than totalShakeDuration...Exiting"); | |
| yield break; //Exit! | |
| } | |
| //Get Original Pos and rot | |
| Transform objTransform = objectToShake.transform; | |
| Vector3 defaultPos = objTransform.position; | |
| Quaternion defaultRot = objTransform.rotation; | |
| float counter = 0f; | |
| //Shake Speed | |
| const float speed = 0.1f; | |
| //Angle Rotation(Optional) | |
| const float angleRot = 4; | |
| //Do the actual shaking | |
| while (counter < totalShakeDuration) | |
| { | |
| counter += Time.deltaTime; | |
| float decreaseSpeed = speed; | |
| float decreaseAngle = angleRot; | |
| //Shake GameObject | |
| if (objectIs2D) | |
| { | |
| //Don't Translate the Z Axis if 2D Object | |
| Vector3 tempPos = defaultPos + UnityEngine.Random.insideUnitSphere * decreaseSpeed; | |
| tempPos.z = defaultPos.z; | |
| objTransform.position = tempPos; | |
| //Only Rotate the Z axis if 2D | |
| objTransform.rotation = defaultRot * Quaternion.AngleAxis(UnityEngine.Random.Range(-angleRot, angleRot), new Vector3(0f, 0f, 1f)); | |
| } | |
| else | |
| { | |
| objTransform.position = defaultPos + UnityEngine.Random.insideUnitSphere * decreaseSpeed; | |
| objTransform.rotation = defaultRot * Quaternion.AngleAxis(UnityEngine.Random.Range(-angleRot, angleRot), new Vector3(1f, 1f, 1f)); | |
| } | |
| yield return null; | |
| //Check if we have reached the decreasePoint then start decreasing decreaseSpeed value | |
| if (counter >= decreasePoint) | |
| { | |
| Debug.Log("Decreasing shake"); | |
| //Reset counter to 0 | |
| counter = 0f; | |
| while (counter <= decreasePoint) | |
| { | |
| counter += Time.deltaTime; | |
| decreaseSpeed = Mathf.Lerp(speed, 0, counter / decreasePoint); | |
| decreaseAngle = Mathf.Lerp(angleRot, 0, counter / decreasePoint); | |
| Debug.Log("Decrease Value: " + decreaseSpeed); | |
| //Shake GameObject | |
| if (objectIs2D) | |
| { | |
| //Don't Translate the Z Axis if 2D Object | |
| Vector3 tempPos = defaultPos + UnityEngine.Random.insideUnitSphere * decreaseSpeed; | |
| tempPos.z = defaultPos.z; | |
| objTransform.position = tempPos; | |
| //Only Rotate the Z axis if 2D | |
| objTransform.rotation = defaultRot * Quaternion.AngleAxis(UnityEngine.Random.Range(-decreaseAngle, decreaseAngle), new Vector3(0f, 0f, 1f)); | |
| } | |
| else | |
| { | |
| objTransform.position = defaultPos + UnityEngine.Random.insideUnitSphere * decreaseSpeed; | |
| objTransform.rotation = defaultRot * Quaternion.AngleAxis(UnityEngine.Random.Range(-decreaseAngle, decreaseAngle), new Vector3(1f, 1f, 1f)); | |
| } | |
| yield return null; | |
| } | |
| //Break from the outer loop | |
| break; | |
| } | |
| } | |
| objTransform.position = defaultPos; //Reset to original postion | |
| objTransform.rotation = defaultRot;//Reset to original rotation | |
| shaking = false; //So that we can call this function next time | |
| Debug.Log("Done!"); | |
| } | |
| void shakeGameObject(GameObject objectToShake, float shakeDuration, float decreasePoint, bool objectIs2D = false) | |
| { | |
| if (shaking) | |
| { | |
| return; | |
| } | |
| shaking = true; | |
| StartCoroutine(shakeGameObjectCOR(objectToShake, shakeDuration, decreasePoint, objectIs2D)); | |
| } | |
| void Start() | |
| { | |
| shakeGameObject(GameObjectToShake, 5, 3f, true); | |
| } | |
| } |
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