Simon O'Shea
117 lines
3.9 KiB
C#
117 lines
3.9 KiB
C#
/*
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------------------- Code Monkey -------------------
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Thank you for downloading the Code Monkey Utilities
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I hope you find them useful in your projects
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If you have any questions use the contact form
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Cheers!
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unitycodemonkey.com
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--------------------------------------------------
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*/
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using System;
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using System.Collections.Generic;
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using UnityEngine;
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namespace CodeMonkey.MonoBehaviours {
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/*
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* Script to handle Camera Movement and Zoom
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* Place on Camera GameObject
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* */
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public class CameraFollow : MonoBehaviour {
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public static CameraFollow Instance { get; private set; }
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private Camera myCamera;
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private Func<Vector3> GetCameraFollowPositionFunc;
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private Func<float> GetCameraZoomFunc;
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public void Setup(Func<Vector3> GetCameraFollowPositionFunc, Func<float> GetCameraZoomFunc, bool teleportToFollowPosition, bool instantZoom) {
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this.GetCameraFollowPositionFunc = GetCameraFollowPositionFunc;
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this.GetCameraZoomFunc = GetCameraZoomFunc;
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if (teleportToFollowPosition) {
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Vector3 cameraFollowPosition = GetCameraFollowPositionFunc();
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cameraFollowPosition.z = transform.position.z;
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transform.position = cameraFollowPosition;
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}
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if (instantZoom) {
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myCamera.orthographicSize = GetCameraZoomFunc();
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}
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}
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private void Awake() {
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Instance = this;
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myCamera = transform.GetComponent<Camera>();
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}
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public void SetCameraFollowPosition(Vector3 cameraFollowPosition) {
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SetGetCameraFollowPositionFunc(() => cameraFollowPosition);
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}
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public void SetGetCameraFollowPositionFunc(Func<Vector3> GetCameraFollowPositionFunc) {
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this.GetCameraFollowPositionFunc = GetCameraFollowPositionFunc;
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}
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public void SetCameraZoom(float cameraZoom) {
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SetGetCameraZoomFunc(() => cameraZoom);
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}
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public void SetGetCameraZoomFunc(Func<float> GetCameraZoomFunc) {
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this.GetCameraZoomFunc = GetCameraZoomFunc;
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}
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private void Update() {
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HandleMovement();
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HandleZoom();
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}
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private void HandleMovement() {
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if (GetCameraFollowPositionFunc == null) return;
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Vector3 cameraFollowPosition = GetCameraFollowPositionFunc();
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cameraFollowPosition.z = transform.position.z;
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Vector3 cameraMoveDir = (cameraFollowPosition - transform.position).normalized;
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float distance = Vector3.Distance(cameraFollowPosition, transform.position);
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float cameraMoveSpeed = 3f;
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if (distance > 0) {
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Vector3 newCameraPosition = transform.position + cameraMoveDir * distance * cameraMoveSpeed * Time.deltaTime;
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float distanceAfterMoving = Vector3.Distance(newCameraPosition, cameraFollowPosition);
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if (distanceAfterMoving > distance) {
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// Overshot the target
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newCameraPosition = cameraFollowPosition;
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}
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transform.position = newCameraPosition;
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}
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}
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private void HandleZoom() {
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if (GetCameraZoomFunc == null) return;
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float cameraZoom = GetCameraZoomFunc();
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float cameraZoomDifference = cameraZoom - myCamera.orthographicSize;
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float cameraZoomSpeed = 1f;
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myCamera.orthographicSize += cameraZoomDifference * cameraZoomSpeed * Time.deltaTime;
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if (cameraZoomDifference > 0) {
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if (myCamera.orthographicSize > cameraZoom) {
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myCamera.orthographicSize = cameraZoom;
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}
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} else {
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if (myCamera.orthographicSize < cameraZoom) {
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myCamera.orthographicSize = cameraZoom;
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}
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}
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}
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}
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} |