The Bird Script

版本检查: 5.5


难度: 新手

In this beginner friendly live training we will look at creating a simple 2D Flappy Bird style game. We'll cover best practices for infinite or endless games, basic object pooling and creating cartoon physics effects.

The Bird Script

新手 2D Game Creation


Code snippet

using UnityEngine;
using System.Collections;

public class Bird : MonoBehaviour 
    public float upForce;                   //Upward force of the "flap".
    private bool isDead = false;            //Has the player collided with a wall?

    private Animator anim;                  //Reference to the Animator component.
    private Rigidbody2D rb2d;               //Holds a reference to the Rigidbody2D component of the bird.

    void Start()
        //Get reference to the Animator component attached to this GameObject.
        anim = GetComponent<Animator> ();
        //Get and store a reference to the Rigidbody2D attached to this GameObject.
        rb2d = GetComponent<Rigidbody2D>();

    void Update()
        //Don't allow control if the bird has died.
        if (isDead == false) 
            //Look for input to trigger a "flap".
            if (Input.GetMouseButtonDown(0)) 
                //...tell the animator about it and then...
                // out the birds current y velocity before...
                rb2d.velocity =;
                //  new Vector2(rb2d.velocity.x, 0);
                // the bird some upward force.
                rb2d.AddForce(new Vector2(0, upForce));

    void OnCollisionEnter2D(Collision2D other)
        // Zero out the bird's velocity
        rb2d.velocity =;
        // If the bird collides with something set it to dead...
        isDead = true;
        //...tell the Animator about it...
        anim.SetTrigger ("Die");
        //...and tell the game control about it.
        GameControl.instance.BirdDied ();

2D Game Creation

  1. 2D Game Development Walkthrough
  2. 2D Mode
  3. The Sprite Type
  4. Sprite Renderer
  5. The Sprite Editor
  6. Sorting Layers
  1. 2D Physics Overview
  2. Rigidbody 2D
  3. Collider 2D
  4. Hinge Joint 2D
  5. Area Effector 2D
  6. Distance Joint 2D
  7. Point Effector 2D
  8. Bouncing & Sliding in 2D
  1. Introduction to Unity from a 2D perspective
  2. 2D Character Controllers
  3. 2D Catch Game - Pt 1
  4. 2D Catch Game - Pt 2
  5. 2D Catch Game - Pt 3
  6. 2D Catch Game - Q&A / AMA
  7. 2D Scrolling Backgrounds
  8. Top Down 2D Game Basics
  9. 2D Physics: Fun with Effectors
  10. Making an "Angry Birds" style game - Part 1
  11. Making an "Angry Birds" style game - Part 2
  12. 2D Games for Non-Programmers
  1. Project Goals
  2. Adding Sprites
  3. The Bird Script
  4. Animating The Bird
  5. Score and GameOver UI Setup
  6. Adding The Game Controller
  7. Scrolling Repeating Backgrounds
  8. Adding Column Obstacles
  9. Recycling Obstacles With Object Pooling
  10. Questions and Answers
  1. Intro and Session Goals
  2. Scripting Gravity
  3. Detecting Overlaps
  4. Scripting Collision
  5. Horizontal Movement
  6. Player Controller Script
  7. Adding Player Animation
  8. Questions and Answers
  1. Introduction and Goals
  2. Sorting Layers and 9-Slice Sprites
  3. 2D Composite and Capsule Colliders
  4. Sorting Groups and Transparency Sort Axis
  5. 2D Physics Reference Project
  6. Questions and Answers
  1. Introduction to 2D Essentials
  2. 2D Character Setup with Corgi Engine
  3. 2D Follow Camera w/ Cinemachine
  4. Adding Enemies with Corgi Engine
  5. 2D Lighting with 2DDL Pro
  6. Tween Effects with DOTween Pro
  7. Easy UI with Doozy UI
  8. Questions and Answers for 2D Essentials
  1. Intro to 2D World building w/ Tilemap
  2. Core Tilemap Concepts
  3. Tilemap Collider 2D and Composite Collider 2D
  4. Confined Follow Camera with Cinemachine For 2D
  5. Using Rule Tiles With Tilemap
  6. Random and Animated Tilemap Tiles
  7. Custom Tilemap Brush To Spawn Prefabs
  8. Questions and Answers for 2D Worldbuilding
  1. Getting Started with SVG Importer