My Unity3d study diary -03 (Input,gameobject,vector3)

Although the previous tutorials were brief but too fragmented, the lessons were not organized. So we re-found a set of tutorials, skip the previous part of the basic knowledge of unity, the script part from the beginning to look at, the following is a little note.

Common methods in the input class

BOOL W=input.getkey (KEYCODE.W);//detect whether to press the keyboard W

Input.getkeydown (KEYCODE.W);//Indicates when the detection is pressed

Input.getkeyup (KEYCODE.W);//Indicates when the detection button bounces

Input.getmousebutton (0);//Parameter 0 for left key, 1 for right, 2 for middle key

The methods of Getmouseup and Getmousedown are similar to the principles of the keyboard

Some common methods on the gameobject itself

Gameobject.name= "Old Wang";

Gameobject.tag = "Player";

BOOL active = gameobject.activeself;//Gets the activation state of the game object

Gameobject.setactive (FALSE); Do not enable the current game object

Gameobj0 obj0 = gameobject.getcomponent<gameobj0> ();//Gets an additional component of the object itself

Print (obj0.age);

Light l=gameobject.addcomponent<light> (); Add a component to the current object

How to find another game object in one game object

Gameobject A;

A = Gameobject.findgameobjectwithtag ("Cube");

Print (a.name);//use tag to find the game object

Gameobject B = Gameobject.find ("Main Camera");

B.name = "Master camera";//Find Game objects by object name

Gameobject.destroy (A,2F); Destroy a Game object, 2f indicates the delay of destruction (2 seconds)

About Vector3

Vector3 v=new Vector3 ();//vector3 is a class used to represent a three-dimensional vector

float x= v.x;

float y= v.y;

Float z= v.z;//xyz in three directions respectively

v=vector3.up;//represents the unit vector of the positive y-axis in the world coordinate system

v = vector3.down;//represents the unit vector for the negative direction of the Y axis in the World coordinate system

v = vector3.right;//represents the unit vector of the positive x-axis in the world coordinate system

v = vector3.left;//represents the unit vector of the x-axis negative direction in the world coordinate system

Forward is the z-axis positive direction, back is the z-axis negative direction, zero indicates the origin.

V.normalize ();//the unit vector that changes V to V

v=v.normalized;//returns a unit vector in v direction, v itself unchanged

float L = v.magnitude;//Gets the length of V

float a = vector3.angle (v1, v2);//Find the angle of two vectors, the return value is not positive or negative

Float d=vector3.distance (V1,V2);//Find the distance between the end of two vectors

Vector3.dot (v1, v2);//dot multiply by two vectors

Vector3.cross (V1,V2);//fork by two vectors