Unity - A计划（永久有效期） 扫二维码继续学习 二维码时效为半小时

地形拉低：按住shift

步移：按住ctrl用左键，旋转也可以，缩放也是

顶点吸附按住V

给你整理一个「Sprite Editor 删边框 / 删精灵」的极简结论版，下次直接照着做就行：

1. 选中你要处理的蓝色边框精灵
2. 按 Delete 键（Mac 用command+ fn + Delete）直接删除它
3. 点右下角 Apply 保存修改

创建2D场景

导入素材

纠错：

让物体如果移动  用xyzzhou

xyz上下左右是什么样子的 怎么用  代表的方向

pivot代表原点 center中心点 local本地坐标轴 global世界坐标轴（3D）前后左右上下

  在Assets创建一个Prefabs弄一个孩子（cude...） 然后放在Prefabs里面可以复制相对应的孩子 可以改变位置 长宽高 

插入

更新（修改）

shan'chu

创建表

查看表结构

删除表 drop table mytable

1、在Terrain中，选择Paint Texture

2、Terrain Layers中添加图层

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class GameManager : MonoBehaviour
{
    public static GameManager Instance { get; private set; }

    public Bird[] birdList;
    private int index = -1;

    private void Awake()
    {
        Instance = this;
    }

    // Start is called before the first frame update
    void Start()
    {
        birdList = FindObjectsByType<Bird>(FindObjectsSortMode.None);

        LoadNextBird();
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    public void LoadNextBird()
    {
        index++;
        birdList[index].GoStage(Slingshot.Instance.getCenterPositon());
    }
}
 

顶点吸附  v

bu'yi

小鸟移动时相机要跟着移动

1.在相机上挂脚本FollowTarget：

（1）设置目标变量Transform类型target

（2）在Update（）：因为只要改x轴，所以先获取相机坐标放在变量position中，再修改position.x，不要直接等于target.x,用v3.Lerp();

(3)测试：发现初始视图右侧漏背景外了。所以要限制相机x的范围。用Mathf.Clamp,限定相机x阀内在0-20之间。

（4）为防止小猪滚出边界。在场景后面加一个BgDown，用其碰撞体。在树桩部分，用BgDown做个细长条，不显示，用其碰撞体。

using System.Collections; using System.Collections.Generic; using UnityEngine; public enum BirdStart { Waiting, BeforeShoot, AfterShoot } public class Bird : MonoBehaviour { public BirdStart state = BirdStart.BeforeShoot; //等待 发射前 发射后 public bool isMouseDown = false; public float maxDistance = 2.4f; public float flySpeed = 5; private Rigidbody2D rgd; // Start is called before the first frame update void Start() { rgd = GetComponent(); rgd.bodyType = RigidbodyType2D.Static; } // Update is called once per frame void Update() { switch (state) { case BirdStart.Waiting: break; case BirdStart.BeforeShoot: MoveControl(); break; case BirdStart.AfterShoot: break; } } //OnMouseDown OnMouseUp private void OnMouseDown() { if(state == BirdStart.BeforeShoot) { isMouseDown = true; Slingshot.Instance.StartDraw(transform); } } private void OnMouseUp() { if (state == BirdStart.BeforeShoot) { isMouseDown = false; Slingshot.Instance.EndDraw(); Fly(); } } private void MoveControl() { if(isMouseDown) { transform.position = GetMousePosition(); } } private Vector3 GetMousePosition() { Vector3 centerPosition = Slingshot.Instance.getCenterPositon(); Vector3 mp = Camera.main.ScreenToWorldPoint(Input.mousePosition); mp.z = 0; Vector3 mouseDir = mp - centerPosition; float distance = mouseDir.magnitude; if (distance > maxDistance) { mp = mouseDir.normalized * maxDistance + centerPosition; } return mp; } private void Fly() { rgd.bodyType = RigidbodyType2D.Dynamic; rgd.velocity = (Slingshot.Instance.getCenterPositon() - transform.position).normalized * flySpeed; state = BirdStart.AfterShoot; } }

Server：

byte[] readBuff;

string receiveStr;

Main():

{

serverSocket.Bind(IPEndPoint("127.0.0.1",8888));

serverSocket.Listen(0);

==服务器启动成功==

serverSocket.BeginAccept(AcceptCallback, serverSocket);

Console.ReadLine();

}

AcceptCallback(IAsyncResult ar):

{

serverSocket = ar.AsyncState as Socket;

clientSocket=serverSocket.EndAccept(ar);

==有一个客户端Accept==

clientSocket.BeginReceive(readBuff, 0, 1024, 0, ReceiveCallback, clientSocket);

serverSocket.BeginAccept(AcceptCallback, serverSocket);

}

ReceiveCallback(IAsyncResult ar):

{

Socket clientSocket = ar.AsyncState as Socket;

int count = clientSocket.EndReceive(ar);
if (count == 0)
{
    clientSocket.Close();
    Console.WriteLine("客户端断开连接");
    return;
}

receiveStr=Encoding.UTF8.GetString(readBuff, 0, count);

=={receiveStr}==

clientSocket.BeginSend(Encoding.UTF8.GetBytes(receiveStr), 0, receiveStr.Length, 0, SendCallback, clientSocket);

clientSocket.BeginReceive(readBuff, 0, 1024, 0, ReceiveCallback, clientSocket);

}

SendCallback(IAsyncResult ar):

{

Socket clientSocket = ar.AsyncState as Socket;

clientSocket.EndSend(ar);

}

Client:

Socket socket;

byte[] readBuff;

string receiveStr;

Connect():

{

socket.BeginConnect("127.0.0.1",8888, ConnectCallback,socket);

}

ConnectCallback(IAsyncResult ar):

{

Socket socket = (Socket)ar.AsyncState;
socket.EndConnect(ar);

==连接成功==

socket.BeginReceive(readBuff, 0, 1024, 0, ReceiveCallback, socket);

}

ReceiveCallback(IAsyncResult ar):

{

Socket socket = ar.AsyncState as Socket;

int count = socket.EndReceive(ar);

receiveStr = Encoding.UTF8.GetString(readBuff, 0, count);

socket.BeginReceive(readBuff, 0, 1024, 0, ReceiveCallback, socket);

}

Send():

{

string sendStr = InputField.text;
byte[] sendBytes =Encoding.UTF8.GetBytes(sendStr);

socket.BeginSend(sendBytes, 0, sendBytes.Length, 0, SendCallback, socket);

}

SendCallback(IAsyncResult ar):

{

Socket socket = ar.AsyncState as Socket;
int count = socket.EndSend(ar);

==发送成功{count}==

}

TCP：确保数据准确无误的传递

UDP：确保数据实时传递，会产生数据丢失

新创建的Vector3 angle会正常有正负数显示

但是transform.eulerAngles的负值实际为360减去其绝对值（例如面板为10则实际为-10）

但在赋值给transform.eulerAngles会自动转换

但是由于需要每帧更新所以要进行       

angle = transform.eulerAngles;

当angle值为负时例如为-10，第一帧正常将transform.eulerAngles设置为-10（实际值为350）

但下一帧进行angle = transform.eulerAngles;时由于 transform.eulerAngles实际为350则angle也变成350，由于clamp的限制（例如限制为-40至40）变为40

所以如果不做处理下落过程中会一直抬头

Mesh Collider:

勾选convex可以简化模型，节省性能

windows-rendering-Linghting-env调整环境光亮度