127 lines
4.2 KiB
C#
127 lines
4.2 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Events;
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using UnityEngine.PlayerLoop;
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namespace MoreMountains.Tools
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{
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/// <summary>
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/// Add this class to an object and it will automatically teleport to the other end of the screen when reaching the screen's edges
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/// </summary>
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public class MMViewportEdgeTeleporter : MonoBehaviour
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{
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[Header("Camera")]
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/// whether or not to grab the Camera.main and store it on init
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public bool AutoGrabMainCamera;
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/// the camera used to compute viewport positions
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public Camera MainCamera;
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[Header("Viewport Bounds")]
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/// the origin values of the viewport
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[MMVector("X","Y")]
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public Vector2 ViewportOrigin = new Vector2(0f, 0f);
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/// the dimensions of the viewport
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[MMVector("W","H")]
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public Vector2 ViewportDimensions = new Vector2(1f, 1f);
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[Header("Teleport Bounds")]
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/// the origin of the teleport destination zone
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[MMVector("X","Y")]
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public Vector2 TeleportOrigin = new Vector2(0f, 0f);
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/// the dimensions of the teleport destination zone
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[MMVector("W","H")]
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public Vector2 TeleportDimensions = new Vector2(1f, 1f);
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[Header("Events")]
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/// an event to trigger on teleport
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public UnityEvent OnTeleport;
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protected Vector3 _viewportPosition;
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protected Vector3 _newViewportPosition;
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/// <summary>
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/// On Awake we initialize our teleporter
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/// </summary>
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protected virtual void Awake()
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{
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Initialization();
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}
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/// <summary>
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/// Stores the main camera if needed
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/// </summary>
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protected virtual void Initialization()
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{
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if (AutoGrabMainCamera)
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{
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MainCamera = Camera.main;
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}
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}
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/// <summary>
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/// Sets a new camera
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/// </summary>
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/// <param name="newCamera"></param>
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public virtual void SetCamera(Camera newCamera)
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{
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MainCamera = newCamera;
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}
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/// <summary>
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/// On Update we check our position relative to the edges
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/// </summary>
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protected void Update()
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{
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DetectEdges();
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}
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/// <summary>
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/// Detects edges, compares with our object's position, and moves it if needed
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/// </summary>
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protected virtual void DetectEdges()
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{
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_viewportPosition = MainCamera.WorldToViewportPoint(this.transform.position);
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bool teleport = false;
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if (_viewportPosition.x < ViewportOrigin.x)
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{
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_newViewportPosition.x = TeleportDimensions.x;
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_newViewportPosition.y = _viewportPosition.y;
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_newViewportPosition.z = _viewportPosition.z;
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teleport = true;
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}
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else if (_viewportPosition.x >= ViewportDimensions.x)
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{
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_newViewportPosition.x = TeleportOrigin.x;
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_newViewportPosition.y = _viewportPosition.y;
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_newViewportPosition.z = _viewportPosition.z;
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teleport = true;
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}
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if (_viewportPosition.y < ViewportOrigin.y)
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{
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_newViewportPosition.x = _viewportPosition.x;
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_newViewportPosition.y = TeleportDimensions.y;
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_newViewportPosition.z = _viewportPosition.z;
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teleport = true;
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}
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else if (_viewportPosition.y >= ViewportDimensions.y)
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{
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_newViewportPosition.x = _viewportPosition.x;
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_newViewportPosition.y = TeleportOrigin.y;
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_newViewportPosition.z = _viewportPosition.z;
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teleport = true;
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}
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if (teleport)
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{
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OnTeleport?.Invoke();
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this.transform.position = MainCamera.ViewportToWorldPoint(_newViewportPosition);
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}
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}
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}
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}
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