Roll-a-Ball教程学习笔记（未整理）

Roll-a-Ball教程学习笔记（未整理）


环境：Unity3D5 5.1.1f1
作者：kagula


简介
  资料资料[1]学习Unity3D基本概念，并做了笔记。


注意事项
[1]
FixedUpdate事件，响应物理动作，同帧率无关。


[2]
关键词（函数名）后面跟上Ctrl+'，打开Help document.


[3]
关于空间
Vector3（LeftOrRight, UpOrDown, ForwardOrBackward)


[4]添加了“Rigidbody”component的游戏对象可以接受外力和扭矩力，
并且像真实的物体一样接受摩擦力和重力。


[5]LastUpdate事件，所有item运算完成后,就激发这个事件。


[6]prefab的概念就像个“原始模板”，对它的修改会影响它的所有实例。


[7]静态对象不要移动它，否则会导致刷新静态对象cache，性能会降低，
   所以会动的东西，要加上RigidBody component，这样就不是“静态对象”了，改进了效率.


[8]Collider的Is Trigger属性，是不是意思说，其它对象碰到它，会触发OnTriggerEnter事件？


教程中用到的源代码

PlayController.cs源码清单

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class PlayerController : MonoBehaviour {
	public float speed;
	public Text countText;
	public Text winText;

	private Rigidbody rb;
	private int count;

	void Start()
	{
		rb = GetComponent<Rigidbody> ();
		count = 0;
		countText.text = "Count:" + count.ToString ();
		winText.text = "";
		SetCountText();
	}

	void FixedUpdate()
	{
		float moveHorizontal = Input.GetAxis ("Horizontal");
		float moveVertical = Input.GetAxis ("Vertical");

		Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
		rb.AddForce (movement * speed);
	}

	void OnTriggerEnter(Collider other)
	{
		if (other.gameObject.CompareTag ("Pick Up")) {
			other.gameObject.SetActive(false);
			count = count + 1;
			SetCountText();
		}
	}

	void SetCountText()
	{
		countText.text = "Count:" + count.ToString ();
		if (count >= 10) {
			winText.text = "You Win";
		}
	}
}

CameraController.cs源码清单

using UnityEngine;
using System.Collections;

public class CameraController : MonoBehaviour {
	public GameObject player;
	private Vector3 offset;
	// Use this for initialization
	void Start () {
		offset = transform.position - player.transform.position;	
	}
	
	// Update is called once per frame
	void Update () {
		transform.position = player.transform.position + offset;
	}
}

Rotator.cs源码清单

using UnityEngine;
using System.Collections;

public class Rotator : MonoBehaviour {
	// Update is called once per frame
	void Update () {
		transform.Rotate (new Vector3 (13, 30, 45) * Time.deltaTime);
	}
}

参考资料
[1]Roll-a-Ball教程地址
https://unity3d.com/learn/tutorials/projects/roll-a-ball/creating-collectables