Merge pull request #1 from Games-Academy-Student-Work-21-22/cannon-movement

Added cannon movement with constraints

Unity-Files/.erp

@@ -5,7 +5,7 @@
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Unity-Files/Assets/Scripts/Movement/MoveHorizontalConstrained.cs

@@ -0,0 +1,56 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+[RequireComponent(typeof(Rigidbody2D))]
+public class MoveHorizontalConstrained : Physics2DObject
+{
+    [Header("Input keys")]
+    public Enums.KeyGroups typeOfControl = Enums.KeyGroups.ArrowKeys;
+    [Header("Movement")]
+    [Tooltip("Speed of movement")]
+    public float speed = 5f;
+    [Header("Movement Constraint")]
+    [Tooltip("How Far Movement is Constrained")]
+    public float constrainedDistance = 5f;
+    private Vector2 movement;
+    private float moveHorizontal, initalPositionX, constraintOffsetXPosition;
+
+    //Is called once when object is created
+    void Start()
+    {
+        //Gets positional offset from current position
+        initalPositionX = this.transform.position.x;
+        constraintOffsetXPosition = initalPositionX + constrainedDistance;
+    }
+    // Update is called once per frame
+    void Update()
+    {
+        //Gets input from either the arrow keys or WASD
+        if (typeOfControl == Enums.KeyGroups.ArrowKeys)
+        {
+            moveHorizontal = Input.GetAxis("Horizontal");
+        }
+        else
+        {
+            moveHorizontal = Input.GetAxis("Horizontal2");
+        }
+        //Defines Horizontal Movement
+        movement = new Vector2(moveHorizontal, 0f);
+    }
+
+    //FixedUpdate is called every frame when the physics are calculated
+    void FixedUpdate()
+    {
+        //Sets the objects velocity to 0 if it hits the constrained bounds
+        if ((this.transform.position.x >= constraintOffsetXPosition && moveHorizontal >= 0f) || (this.transform.position.x <= (constraintOffsetXPosition * -1) && moveHorizontal <= 0f))
+        {
+            rigidbody2D.velocity = new Vector2(0f, 0f);
+        }
+        else
+        {
+            //Apply the force to the Rigidbody2d
+            rigidbody2D.AddForce(movement * speed * 5f);
+        }
+    }
+}

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