Chapter 20 Assets and Code

Author: aegodbold

Chapter 20/Assets/Cat.png

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+public class ActionReferenceBasicCharacterController : MonoBehaviour
+{
+    private Rigidbody2D catRigidbody;
+    [SerializeField] private float speed;
+    [SerializeField] private float jumpHeight;
+    private bool grounded;
+    private Vector2 moveVector = new Vector2();
+
+    [SerializeField] private InputActionAsset actions;
+    private InputAction playerMoveAction;
+    
+    void Awake()
+    {
+        catRigidbody = GetComponent<Rigidbody2D>();
+    }
+
+    private void OnEnable() {
+        actions.FindActionMap("Player").Enable();
+        actions.FindActionMap("Player").FindAction("Jump").performed += OnJump; // subscribe to the "Jump" action
+        playerMoveAction = actions.FindActionMap("Player").FindAction("Move"); // find the "Move" action 
+    }
+
+    void Update() {
+        moveVector = playerMoveAction.ReadValue<Vector2>();
+        catRigidbody.velocity = new Vector2(speed * moveVector.x, catRigidbody.velocity.y);
+    }
+    
+    // called from Jump Event on Cat's Player Input component
+    public void OnJump(InputAction.CallbackContext context) {
+        if(grounded){
+            catRigidbody.AddForce(new Vector2(catRigidbody.velocity.x, jumpHeight));
+        }
+    }
+
+    private void OnCollisionEnter2D(Collision2D other) {
+        grounded = true;
+    }
+
+    private void OnCollisionExit2D(Collision2D other) {
+        grounded = false;
+    }
+
+    private void OnDisable() {
+        actions.FindActionMap("Player").FindAction("Jump").performed -= OnJump;
+        actions.FindActionMap("Player").Disable();
+    }
+}

Chapter 20/Scripts/ActionReferenceBasicCharacterController.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class InputManagerBasicCharacterController : MonoBehaviour
+{
+    private Rigidbody2D catRigidbody;
+    [SerializeField] private float speed;
+    [SerializeField] private float jumpHeight;
+    private float movement;
+    private bool grounded;
+
+    void Awake()
+    {
+        catRigidbody = GetComponent<Rigidbody2D>();
+    }
+    
+    void Update() {
+        movement = Input.GetAxis("Horizontal");
+        catRigidbody.velocity = new Vector2(speed * movement, catRigidbody.velocity.y);
+        
+        if(grounded && Input.GetButtonDown("Jump")){
+            catRigidbody.AddForce(new Vector2(catRigidbody.velocity.x, jumpHeight));
+        }
+    }
+
+    private void OnCollisionEnter2D(Collision2D other) {
+        grounded = true;
+    }
+
+    private void OnCollisionExit2D(Collision2D other) {
+        grounded = false;
+    }
+}

Chapter 20/Scripts/InputManagerBasicCharacterController.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+public class PlayerInputBasicCharacterController : MonoBehaviour
+{
+    private Rigidbody2D catRigidbody;
+    [SerializeField] private float speed;
+    [SerializeField] private float jumpHeight;
+    private bool grounded;
+    private Vector2 moveVector = new Vector2();
+
+    void Awake()
+    {
+        catRigidbody = GetComponent<Rigidbody2D>();
+    }
+    
+    void Update() {
+        catRigidbody.velocity = new Vector2(speed * moveVector.x, catRigidbody.velocity.y);
+    }
+    
+    // called from Jump Event on Cat's Player Input component
+    public void OnJump(InputAction.CallbackContext context) {
+        if(grounded){
+            catRigidbody.AddForce(new Vector2(catRigidbody.velocity.x, jumpHeight));
+        }
+    }
+
+    // called from Move Event on Cat's Player Input component
+    public void OnMove(InputAction.CallbackContext context) {
+        moveVector = context.ReadValue<Vector2>();
+    }
+    private void OnCollisionEnter2D(Collision2D other) {
+        grounded = true;
+    }
+
+    private void OnCollisionExit2D(Collision2D other) {
+        grounded = false;
+    }
+}