Unity game Development Math and Physics 2 (control the movement of objects through the keyboard)

Control the movement of an object through the keyboard

Implementation needs to be noted:

• Get keyboard-appropriate methods
• Boundary detection
• Velocity processing of the resultant force direction
• Pythagorean theorem

usingUnityengine;usingSystem.Collections;//Control the movement of the object through the keyboard Public classkeycontrolmotiontest:monobehaviour{//X position of Object    floatPosX =0;//Y position of Object    floatPosY =0;//speed of the object in the x direction    floatSpeedx =1;//speed of the object in the y direction    floatSpeedY =1;//The top right pixel of the screen in world space coordinatesVector3 Screenrighttoppos;//The left lower pixel of the screen in world space coordinatesVector3 Screenleftbottompos;half width of//box    floatBoxhalfwidth;ReadOnly floatSqrt2; Public keycontrolmotiontest()    {the root of//2Sqrt2 = Mathf.sqrt (2); }voidStart () {//Convert the pixel on the right of the screen to the coordinates of world spaceScreenrighttoppos = Camera.main.ScreenToWorldPoint (NewVector3 (Screen.width, Screen.height,0));//Convert the pixel at the bottom right of the screen to the coordinates of world spaceScreenleftbottompos = Camera.main.ScreenToWorldPoint (NewVector3 (0,0,0));//box half width, because box is squareBoxhalfwidth = transform.localscale.x *0.5F//Initial positionTransform.localposition =NewVector3 (PosX, PosY,0); }voidUpdate () {//Hold left button        if(Isleftkey ()) {//Hold left button and press the UP key            if(Isupkey ())                {PosX-= Speedx/sqrt2 * TIME.DELTATIME;            PosY + = Speedy/sqrt2 * TIME.DELTATIME; }//Hold left button and press and hold down key            Else if(Isdownkey ())                {PosX-= Speedx/sqrt2 * TIME.DELTATIME;            PosY-= Speedy/sqrt2 * TIME.DELTATIME; }Else{PosX-= Speedx * TIME.DELTATIME; }        }//Hold right button        Else if(Isrightkey ()) {//Hold right button and press the UP key            if(Isupkey ())                {PosX + = Speedx/sqrt2 * TIME.DELTATIME;            PosY + = Speedy/sqrt2 * TIME.DELTATIME; }//Right-click and hold down the key            Else if(Isdownkey ())                {PosX + = Speedx/sqrt2 * TIME.DELTATIME;            PosY-= Speedy/sqrt2 * TIME.DELTATIME; }Else{PosX + = Speedx * TIME.DELTATIME; }        }//press and hold the key        Else if(Isupkey ())        {PosY + = SpeedY * TIME.DELTATIME; }//press and hold down the key        Else if(Isdownkey ())        {PosY-= SpeedY * TIME.DELTATIME; }//Boundary detection right        if(PosX + boxhalfwidth >= screenrighttoppos.x)        {PosX = Screenrighttoppos.x-boxhalfwidth; }//boundary detection left        if(Posx-boxhalfwidth <= screenleftbottompos.x)        {PosX = screenleftbottompos.x + boxhalfwidth; }//boundary detection on        if(PosY + boxhalfwidth >= screenrighttoppos.y)        {PosY = Screenrighttoppos.y-boxhalfwidth; }//Boundary detection        if(Posy-boxhalfwidth <= Screenleftbottompos.y)        {PosY = Screenleftbottompos.y + boxhalfwidth; }//Set the position of the current objectTransform.localposition =NewVector3 (PosX, PosY,0); }BOOLIsleftkey () {//Hold left button or a key, all left        if(Input.getkey (keycode.leftarrow) | | Input.getkey (Keycode.a)) {return true; }Else{return false; }    }BOOLIsupkey () {//Hold up the key or W key, all upward        if(Input.getkey (keycode.uparrow) | | Input.getkey (KEYCODE.W)) {return true; }Else{return false; }    }BOOLIsdownkey () {//Hold down the key or the S key, all down        if(Input.getkey (keycode.downarrow) | | Input.getkey (KEYCODE.S)) {return true; }Else{return false; }    }BOOLIsrightkey () {//Hold right button or D key, all right        if(Input.getkey (keycode.rightarrow) | | Input.getkey (KEYCODE.D)) {return true; }Else{return false; }    }}

Unity game Development Math and Physics 2 (control the movement of objects through the keyboard)