1 files changed, 117 insertions, 0 deletions
diff --git a/Pathfinding Visualizer/Assets/CodeMonkey/MonoBehaviours/CameraFollow.cs b/Pathfinding Visualizer/Assets/CodeMonkey/MonoBehaviours/CameraFollow.cs
new file mode 100644
index 0000000..b52597d
--- /dev/null
+++ b/Pathfinding Visualizer/Assets/CodeMonkey/MonoBehaviours/CameraFollow.cs
@@ -0,0 +1,117 @@
+/* 
+    ------------------- Code Monkey -------------------
+    
+    Thank you for downloading the Code Monkey Utilities
+    I hope you find them useful in your projects
+    If you have any questions use the contact form
+    Cheers!
+
+               unitycodemonkey.com
+    --------------------------------------------------
+ */
+ 
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace CodeMonkey.MonoBehaviours {
+
+    /*
+     * Script to handle Camera Movement and Zoom
+     * Place on Camera GameObject
+     * */
+    public class CameraFollow : MonoBehaviour {
+
+        public static CameraFollow Instance { get; private set; }
+
+        private Camera myCamera;
+        private Func<Vector3> GetCameraFollowPositionFunc;
+        private Func<float> GetCameraZoomFunc;
+
+        public void Setup(Func<Vector3> GetCameraFollowPositionFunc, Func<float> GetCameraZoomFunc, bool teleportToFollowPosition, bool instantZoom) {
+            this.GetCameraFollowPositionFunc = GetCameraFollowPositionFunc;
+            this.GetCameraZoomFunc = GetCameraZoomFunc;
+
+            if (teleportToFollowPosition) {
+                Vector3 cameraFollowPosition = GetCameraFollowPositionFunc();
+                cameraFollowPosition.z = transform.position.z;
+                transform.position = cameraFollowPosition;
+            }
+
+            if (instantZoom) {
+                myCamera.orthographicSize = GetCameraZoomFunc();
+            }
+        }
+
+        private void Awake() {
+            Instance = this;
+            myCamera = transform.GetComponent<Camera>();
+        }
+
+        public void SetCameraFollowPosition(Vector3 cameraFollowPosition) {
+            SetGetCameraFollowPositionFunc(() => cameraFollowPosition);
+        }
+
+        public void SetGetCameraFollowPositionFunc(Func<Vector3> GetCameraFollowPositionFunc) {
+            this.GetCameraFollowPositionFunc = GetCameraFollowPositionFunc;
+        }
+
+        public void SetCameraZoom(float cameraZoom) {
+            SetGetCameraZoomFunc(() => cameraZoom);
+        }
+
+        public void SetGetCameraZoomFunc(Func<float> GetCameraZoomFunc) {
+            this.GetCameraZoomFunc = GetCameraZoomFunc;
+        }
+
+
+        private void Update() {
+            HandleMovement();
+            HandleZoom();
+        }
+
+        private void HandleMovement() {
+            if (GetCameraFollowPositionFunc == null) return;
+            Vector3 cameraFollowPosition = GetCameraFollowPositionFunc();
+            cameraFollowPosition.z = transform.position.z;
+
+            Vector3 cameraMoveDir = (cameraFollowPosition - transform.position).normalized;
+            float distance = Vector3.Distance(cameraFollowPosition, transform.position);
+            float cameraMoveSpeed = 3f;
+
+            if (distance > 0) {
+                Vector3 newCameraPosition = transform.position + cameraMoveDir * distance * cameraMoveSpeed * Time.deltaTime;
+
+                float distanceAfterMoving = Vector3.Distance(newCameraPosition, cameraFollowPosition);
+
+                if (distanceAfterMoving > distance) {
+                    // Overshot the target
+                    newCameraPosition = cameraFollowPosition;
+                }
+
+                transform.position = newCameraPosition;
+            }
+        }
+
+        private void HandleZoom() {
+            if (GetCameraZoomFunc == null) return;
+            float cameraZoom = GetCameraZoomFunc();
+
+            float cameraZoomDifference = cameraZoom - myCamera.orthographicSize;
+            float cameraZoomSpeed = 1f;
+
+            myCamera.orthographicSize += cameraZoomDifference * cameraZoomSpeed * Time.deltaTime;
+
+            if (cameraZoomDifference > 0) {
+                if (myCamera.orthographicSize > cameraZoom) {
+                    myCamera.orthographicSize = cameraZoom;
+                }
+            } else {
+                if (myCamera.orthographicSize < cameraZoom) {
+                    myCamera.orthographicSize = cameraZoom;
+                }
+            }
+        }
+    }
+
+}
+\ No newline at end of file