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Assets/Scripts/MovingPlatform.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class MovingPlatform : MonoBehaviour
+{
+
+    public float width;
+    public float height;
+    [Range(0.1f, 8)] [SerializeField] private float speed = 1;
+
+    private bool movingLeft = false;
+    private bool movingUp = false;
+
+    Vector3 vector;
+    Vector3 object_position;
+    Vector3 furthest_position;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        vector = transform.position;
+        object_position = transform.position;
+        furthest_position = object_position;
+        furthest_position[0] += width;
+        furthest_position[1] += height;
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if (width > 0) {
+            if (movingLeft) {
+                if (vector[0] > object_position[0]) {
+                    vector[0] -= speed * Time.deltaTime;
+                } else {
+                    movingLeft = !movingLeft;
+                    vector[0] += speed * Time.deltaTime;
+                }
+            } else {
+                if (vector[0] < furthest_position[0]) {
+                    vector[0] += speed * Time.deltaTime;
+                } else {
+                    movingLeft = !movingLeft;
+                    vector[0] -= speed * Time.deltaTime;
+                }
+            }
+        } else if (width < 0) {
+            if (movingLeft) {
+                if (vector[0] > furthest_position[0]) {
+                    vector[0] -= speed * Time.deltaTime;
+                } else {
+                    movingLeft = !movingLeft;
+                    vector[0] += speed * Time.deltaTime;
+                }
+            } else {
+                if (vector[0] < object_position[0]) {
+                    vector[0] += speed * Time.deltaTime;
+                } else {
+                    movingLeft = !movingLeft;
+                    vector[0] -= speed * Time.deltaTime;
+                }
+            }
+        }
+
+        if (height > 0) {
+            if  (movingUp) {
+                if (vector[1] < furthest_position[1]) {
+                    vector[1] += speed * Time.deltaTime;
+                } else {
+                    movingUp = !movingUp;
+                    vector[1] -= speed * Time.deltaTime;
+                }
+            } else {
+                if (vector[1] > object_position[1]) {
+                    vector[1] -= speed * Time.deltaTime;
+                } else {
+                    movingUp = !movingUp;
+                    vector[1] += speed * Time.deltaTime;
+                }
+            }
+        } else if (height < 0) {
+            if  (movingUp) {
+                if (vector[1] < object_position[1]) {
+                    vector[1] += speed * Time.deltaTime;
+                } else {
+                    movingUp = !movingUp;
+                    vector[1] -= speed * Time.deltaTime;
+                }
+            } else {
+                if (vector[1] > furthest_position[1]) {
+                    vector[1] -= speed * Time.deltaTime;
+                } else {
+                    movingUp = !movingUp;
+                    vector[1] += speed * Time.deltaTime;
+                }
+            }
+        }
+        
+        transform.position = vector;
+    }
+}

Assets/Scripts/MovingPlatform.cs.meta

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+guid: 20c0ecf95ac68c343bdf7b8295ff699c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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