Unity3d学习总汇

Posted by SixTeen on February 24, 2016

索引：
C#公有变量
C#的获取组件
C#用代码改变材质
Vector3
Transform.Translate和Transform.Rotate
Time,Random
单例模式
C# Collection使用
双击检测
foreach
unity3d 角色控制器 卡墙和弹飞问题





在C#代码中使用的公有变量可以在Inspector中直接更改

public_var public_var_inspector public_var_change

然而这个更改不会更改你的脚本中的变量的值，只改变挂载的那个的值，最终实际应用到游戏的值是inspector上的值（对应的挂载对象）：

public_var

C#的获取组件

获取对象

GameObject myGameObject = GameObject.Find("object_name");

myGameObject.GetComponent<component_name>()

C#用代码改变材质

获取材质：gameObject.renderer.material 给材质添加颜色： gameObject.renderer.material.color = Color.red

Vector3

Static variables Represent
back Shorthand for writing Vector3(0, 0, -1).
down Shorthand for writing Vector3(0, -1, 0).
forward Shorthand for writing Vector3(0, 0, 1).
left Shorthand for writing Vector3(-1, 0, 0).
one Shorthand for writing Vector3(1, 1, 1).
right Shorthand for writing Vector3(1, 0, 0).
up Shorthand for writing Vector3(0, 1, 0).
zero Shorthand for writing Vector3(0, 0, 0).

在unity3d中的坐标是:

vector3_position

vector3_object

vector3_position_1

one单位向量，zero是（0，0，0）

Vector3里的变量x,y,z分别代表x,y,z轴上的坐标。

transform.Translate和Transform.Rotate

向Vector3这个参数方向移动Vector3长度的距离:

transform.Translate(Vector3.forward * Time.deltaTime);

参数作为法向量，按左手法则决定旋转方向：

transform.Rotate(Vector3.right * Time.deltaTime);

选转的中心为父节点，如果没有父节点，就自转。

Time & Random

Time.deltaTime The time in seconds it took to complete the last frame (Read Only).

Range Returns a random float number between and min [inclusive] and max [inclusive] (Read Only).

Random.Range(0,10);//0-9

单例模式

单例模式

C# Collection使用

collection使用

双击检测

//double_click.cs
using UnityEngine;
using System.Collections;

public class double_click : MonoBehaviour {

    private float doubleClickStart = 0;
    private float doubleClickGap = 0.2f;
    //点击鼠标左键的时候，将doubleClickStart设为当前的时间，
    //如果再次点击的间隔少于doubleclickGap，返回true
    bool doubleClick(){
        if (Input.GetKeyUp (KeyCode.Mouse0)) {
            if (Time.time - doubleClickStart < doubleClickGap) {
                return true;
            }else{
                doubleClickStart = Time.time;
                return false;
            }
        }
        return false;
    }
    // Update is called once per frame
    void Update () {
        if (doubleClick ()) {
            print (1);
        }
    }
}

foreach

foreach 中不能进行元素的删减

角色控制器 卡墙和弹飞问题

卡墙的问题我们可以用到自带的角色控制器中的AdvanceSettings中的shellOffset来解决。设置为0.1或者以上就可以解决卡墙问题。

        [Serializable]
        public class AdvancedSettings
        {
            public float groundCheckDistance = 0.01f; // distance for checking if the controller is grounded ( 0.01f seems to work best for this )
            public float stickToGroundHelperDistance = 0.5f; // stops the character
            public float slowDownRate = 20f; // rate at which the controller comes to a stop when there is no input
            public bool airControl; // can the user control the direction that is being moved in the air
            [Tooltip("set it to 0.1 or more if you get stuck in wall")]
            public float shellOffset = 0.1f; //reduce the radius by that ratio to avoid getting stuck in wall (a value of 0.1f is nice)
        }

弹飞的问题是因为在碰撞后y位置发生改变，我们在rigidbody中锁定y，就可以不让物理效果改变我们的y坐标，锁定的坐标只能由代码来改变。

freeze_position