# Box just going off screen and then disappears. Please help

**URL:** <https://discourse.processing.org/t/box-just-going-off-screen-and-then-disappears-please-help/36697>\
**Category:** Coding Questions\
**Created:** [May 3, 2022, 4:29pm UTC](https://discourse.processing.org/t/box-just-going-off-screen-and-then-disappears-please-help/36697 "2022-05-03T16:29:55Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![king\_B99](https://avatars.discourse-cdn.com/v4/letter/k/258eb7/32.png) [@king\_B99](https://discourse.processing.org/u/king_B99)\
**Post date:** [May 3, 2022, 4:29pm UTC](https://discourse.processing.org/t/box-just-going-off-screen-and-then-disappears-please-help/36697/1 "2022-05-03T16:29:55Z")

</div>

So i have a box that goes across the screen and is is supposed to loop but it just does it once

> **Broken Part**
>
> if (boxX+10 ==(width)) {
> 
> ```
> boxX=width-width+1;
> 
> ```
> 
> }
> 
> boxX = boxX+10;  
> rect(boxX, boxY, 50, 50);  
> }

> **Full Code**
>
> int carX = 50;  
> int carY= 50;  
> color carRed = color(255, 0, 0);  
> color tires = color(0, 0, 0);  
> boolean vertical = false;//helps with drawing  
> int speed=30;  
> boolean vertical2 = false;  
> int carXX = 50;  
> int carYY= 50;  
> color carBlue = color(0, 0, 255);  
> int tireX=(50);  
> int tireY=(50);  
> int boxX=(100);  
> int boxY=(100);  
> void setup() {  
> //size(900,900);  
> fullScreen();  
> }
> 
> void draw() {  
> background(10, 225, 50) ;  
> if (vertical == true) {  
> fill(carRed);  
> rect(carX-10, carY-25, 20, 50);  
> fill(tires);  
> rect(carX+10, carY-15, 5, 10);  
> rect(carX-15, carY+10, 5, 10);  
> rect(carX+10, carY+10, 5, 10);  
> rect(carX-15, carY-15, 5, 10);  
> } else {  
> fill(carRed);  
> rect(carX-25, carY-10, 50, 20);  
> fill(tires);  
> rect(carX+10, carY-15, 10, 5);  
> rect(carX-15, carY+10, 10, 5);  
> rect(carX+10, carY+10, 10, 5);  
> rect(carX-15, carY-15, 10, 5);  
> }
> 
> if (vertical2 == true) {  
> fill(carBlue);  
> rect(carXX-10, carYY-25, 20, 50);  
> fill(tires);  
> rect(carXX+10, carYY-15, 5, 10);  
> rect(carXX-15, carYY+10, 5, 10);  
> rect(carXX+10, carYY+10, 5, 10);  
> rect(carXX-15, carYY-15, 5, 10);  
> } else {  
> fill(carBlue);  
> rect(carXX-25, carYY-10, 50, 20);  
> fill(tires);  
> rect(carXX+10, carYY-15, 10, 5);  
> rect(carXX-15, carYY+10, 10, 5);  
> rect(carXX+10, carYY+10, 10, 5);  
> rect(carXX-15, carYY-15, 10, 5);  
> }  
> if (carX\>=displayWidth) {
> 
> ```
> carX=displayWidth-displayWidth+1;
> 
> ```
> 
> }  
> if (carXX\>=displayWidth) {
> 
> ```
> carXX=displayWidth-displayWidth+1;
> 
> ```
> 
> }  
> if (carY\>=displayHeight) {
> 
> ```
> carY=displayHeight-displayHeight+1;
> 
> ```
> 
> }  
> if (carYY\>=displayHeight) {
> 
> ```
> carYY=displayHeight-displayHeight+1;
> 
> ```
> 
> }  
> if (carY\<=0) {
> 
> ```
> carY=displayHeight+0-1;
> 
> ```
> 
> }  
> if (carYY\<=0) {
> 
> ```
> carYY=displayHeight+0-1;
> 
> ```
> 
> }  
> if (carX\<=0) {
> 
> ```
> carX=displayWidth+0-1;
> 
> ```
> 
> }  
> if (carXX\<=0) {
> 
> ```
> carXX=displayWidth+0-1;
> 
> ```
> 
> }
> 
> if (boxX+10 ==(width)) {
> 
> ```
> boxX=width-width+1;
> 
> ```
> 
> }
> 
> boxX = boxX+10;  
> rect(boxX, boxY, 50, 50);  
> }
> 
> // if (boxX == carX);  
> // {  
> // if (boxY == carY);  
> // {
> 
> // speed = 0;  
> // }  
> // }
> 
> void keyPressed() {
> 
> if (keyCode==87) {//W  
> vertical=true;  
> carY -=speed;  
> } else if (keyCode==65) {//A  
> vertical=false;  
> carX-=speed;  
> } else if (keyCode==68) {//D  
> vertical=false;  
> carX+=speed;  
> } else if (keyCode==83) {//S  
> vertical=true;  
> carY+=speed;  
> }
> 
> if (keyCode==38) {//W  
> vertical2=true;  
> carYY -=speed;  
> } else if (keyCode==37) {//A  
> vertical2=false;  
> carXX-=speed;  
> } else if (keyCode==39) {//D  
> vertical2=false;  
> carXX+=speed;  
> } else if (keyCode==40) {//S  
> vertical2=true;  
> carYY+=speed;  
> } else if (keyCode==192) {//S  
> print(“Speed=”+speed);  
> }
> 
> if (carY==carYY && carX==carXX) {  
> if (carXX==carX && carYY==carY) {  
> rect(10, 10, 1000, 1000);  
> }  
> }
> 
> print("key: "+key+“code: “+keyCode+”\n”);  
> }

---

<div class="post-metadata">

**Author:** ![Divitiacus](https://avatars.discourse-cdn.com/v4/letter/d/848f3c/32.png) [@Divitiacus](https://discourse.processing.org/u/Divitiacus)\
**Post date:** [May 3, 2022, 6:46pm UTC](https://discourse.processing.org/t/box-just-going-off-screen-and-then-disappears-please-help/36697/2 "2022-05-03T18:46:47Z")

</div>

In the second round you start at 1 and add 10 each cycle. So boxX will never be exactly equal width.  
You want to check for equal or larger width of boxX.