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January 10, 2023 09:49
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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,178 @@ using UnityEngine; /// <summary> /// Camera controls like Unity Editor. /// </summary> public class SceneLikeCamera : MonoBehaviour { [Header("Focus Object")] [SerializeField, Tooltip("Enable double-click to focus on objects?")] private bool doFocus = false; [SerializeField] private float focusLimit = 100f; [SerializeField] private float minFocusDistance = 5.0f; private float doubleClickTime = .15f; private float cooldown = 0; [Header("Undo - Only undoes the Focus Object - The keys must be pressed in order.")] [SerializeField] private KeyCode firstUndoKey = KeyCode.LeftControl; [SerializeField] private KeyCode secondUndoKey = KeyCode.Z; [Header("Movement")] [SerializeField] private float moveSpeed = 1.0f; [SerializeField] private float panSpeed = 3.0f; [SerializeField] private float rotationSpeed = 10.0f; [SerializeField] private float zoomSpeed = 10.0f; //Cache last pos and rot be able to undo last focus object action. Quaternion prevRot = new Quaternion(); Vector3 prevPos = new Vector3(); [Header("Axes Names")] [SerializeField, Tooltip("Otherwise known as the vertical axis")] private string mouseY = "Mouse Y"; [SerializeField, Tooltip("AKA horizontal axis")] private string mouseX = "Mouse X"; [SerializeField, Tooltip("The axis you want to use for zoom.")] private string zoomAxis = "Mouse ScrollWheel"; [Header("Move Keys")] [SerializeField] private KeyCode forwardKey = KeyCode.W; [SerializeField] private KeyCode backKey = KeyCode.S; [SerializeField] private KeyCode leftKey = KeyCode.A; [SerializeField] private KeyCode rightKey = KeyCode.D; [SerializeField] private KeyCode upKey = KeyCode.E; [SerializeField] private KeyCode downKey = KeyCode.Q; [Header("Flat Move"), Tooltip("Instead of going where the camera is pointed, the camera moves only on the horizontal plane (Assuming you are working in 3D with default preferences).")] [SerializeField] private KeyCode flatMoveKey = KeyCode.LeftShift; [Header("Anchored Movement"), Tooltip("By default in scene-view, this is done by right-clicking for rotation or middle mouse clicking for up and down")] [SerializeField] private KeyCode anchoredMoveKey = KeyCode.Mouse2; [SerializeField] private KeyCode anchoredRotateKey = KeyCode.Mouse1; private void Start() { SavePosAndRot(); } void Update() { if (!doFocus) return; //Double click for focus if (cooldown > 0 && Input.GetKeyDown(KeyCode.Mouse0)) FocusObject(); if (Input.GetKeyDown(KeyCode.Mouse0)) cooldown = doubleClickTime; //--------UNDO FOCUS--------- if (Input.GetKey(firstUndoKey)) { if (Input.GetKeyDown(secondUndoKey)) GoBackToLastPosition(); } cooldown -= Time.deltaTime; } private void LateUpdate() { Vector3 move = Vector3.zero; //Move and rotate the camera if (Input.GetKey(anchoredRotateKey)) { if (Input.GetKey(forwardKey)) move += Vector3.forward * moveSpeed; if (Input.GetKey(backKey)) move += Vector3.back * moveSpeed; if (Input.GetKey(leftKey)) move += Vector3.left * moveSpeed; if (Input.GetKey(rightKey)) move += Vector3.right * moveSpeed; if (Input.GetKey(upKey)) move += Vector3.up * moveSpeed; if (Input.GetKey(downKey)) move += Vector3.down * moveSpeed; } //By far the simplest solution I could come up with for moving only on the Horizontal plane - no rotation, just cache y if (Input.GetKey(flatMoveKey)) { float origY = transform.position.y; transform.Translate(move); transform.position = new Vector3(transform.position.x, origY, transform.position.z); return; } float mouseMoveY = Input.GetAxis(mouseY); float mouseMoveX = Input.GetAxis(mouseX); //Move the camera when anchored if (Input.GetKey(anchoredMoveKey)) { move += Vector3.up * mouseMoveY * -panSpeed; move += Vector3.right * mouseMoveX * -panSpeed; } //Rotate the camera when anchored if (Input.GetKey(anchoredRotateKey)) { transform.RotateAround(transform.position, transform.right, mouseMoveY * -rotationSpeed); transform.RotateAround(transform.position, Vector3.up, mouseMoveX * rotationSpeed); } transform.Translate(move); //Scroll to zoom float mouseScroll = Input.GetAxis(zoomAxis); transform.Translate(Vector3.forward * mouseScroll * zoomSpeed); } public void FocusOnObject(Collider target) { // Save for undo SavePosAndRot(); // Debug.Log("collider" + target.gameObject.name); GameObject go = target.gameObject; Vector3 targetPos = go.transform.position; Vector3 targetSize = target.bounds.size; //transform.position = targetPos + GetOffset(targetPos, targetSize); transform.LookAt(go.transform); } private void FocusObject() { //If we double-clicked an object in the scene, go to its position Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition); RaycastHit hit; if (Physics.Raycast(ray, out hit, focusLimit)) FocusOnObject(hit.collider); } private void SavePosAndRot() { prevRot = transform.rotation; prevPos = transform.position; } private void GoBackToLastPosition() { transform.position = prevPos; transform.rotation = prevRot; } private Vector3 GetOffset(Vector3 targetPos, Vector3 targetSize) { Vector3 dirToTarget = targetPos - transform.position; float focusDistance = Mathf.Max(targetSize.x, targetSize.z); focusDistance = Mathf.Clamp(focusDistance, minFocusDistance, focusDistance); return -dirToTarget.normalized * focusDistance; } }