# Game collision dection problem

**URL:** <https://discourse.processing.org/t/game-collision-dection-problem/24415>\
**Category:** Coding Questions\
**Created:** [October 7, 2020, 5:54pm UTC](https://discourse.processing.org/t/game-collision-dection-problem/24415 "2020-10-07T17:54:24Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![lupos](https://avatars.discourse-cdn.com/v4/letter/l/d9b06d/32.png) [@lupos](https://discourse.processing.org/u/lupos)\
**Post date:** [October 7, 2020, 5:54pm UTC](https://discourse.processing.org/t/game-collision-dection-problem/24415/1 "2020-10-07T17:54:25Z")

</div>

hi  
this is for a university project. on line 223 I am having trouble making so the player doesn’t go over the water. I cant figure out a way for the player to not move over the water without the player getting stuck could someone please help me

character c1 = new character();  
desertbackground bg = new desertbackground(750,500,1500, 1000);  
wbackground w1 = new wbackground(600,200,400,200);  
void setup() {  
size(1500, 1000);  
c1.values();  
bg.varable();  
frameRate(30);  
}

void draw() {  
background(100);

bg.display();  
w1.display();  
c1.move();

}

class character{  
float winner, hinner, xpos, ypos, xmove, ymove, xwpos, ywpos, fillVal, swordx, swordy, swordsx, swordsy, xrestrict, yrestrict,xwmove,ywmove,xscale,yscale;  
boolean sword, upface, downface, leftface, rightface;  
void values(){  
xpos=width/2;  
ypos=height/2;  
upface =false;  
downface = true;  
leftface=false;  
rightface =false;  
sword=false;  
xmove=7;//player movement in the x axis  
ymove=7;//player movement in the y axis  
xwmove=0;//world movement  
ywmove=0;//world movement  
xscale=50;//player scale  
yscale=70;//playerscale  
}

void move(){

winner=275;  
hinner=290;  
rectMode(CENTER);  
xrestrict =xpos+25;  
yrestrict =ypos+35;  
xwpos=xwpos+xwmove;  
ywpos=ywpos+ywmove;  
fill(255);

noFill();  
rect(width/2,height/2,1000,500);//this rectangle is for when the player reches the end of the rect the player will stop moving and the objects in the world will move  
fill(fillVal);

rect(xpos,ypos,xscale,yscale);  
xpos = constrain(xpos, winner, width - winner);  
ypos = constrain(ypos, hinner, height - hinner);  
if(xrestrict\<1255 && xrestrict\>295){  
xwmove=0;  
}  
if(yrestrict\<750 && yrestrict\>=325){  
ywmove=0;  
}  
if(xrestrict\<=295){  
xwmove=7;  
}  
if(xrestrict\>=1255){  
xwmove=-7;  
}  
if(yrestrict\<=320){  
ywmove=7;  
}  
if(yrestrict\>=750){  
ywmove=-7;  
}

if (keyPressed) {  
if(key == ‘w’ || key == ‘W’){  
ypos=ypos-ymove;  
upface=true;  
leftface=false;  
rightface=false;  
downface=false;  
fillVal=255;

```
}

if(key == 's' || key == 'S'){
  ypos=ypos+ymove;
  upface=false;
  leftface=false;
  rightface=false;
  downface=true;
  fillVal=0;
}
    if(key == 'a' || key == 'A'){
  xpos=xpos-xmove;
  upface=false;
  leftface=true;
  rightface=false;
  downface=false;
  fillVal=150;

```

}  
if(key == ‘d’ || key == ‘D’){

```
  xpos=xpos+xmove;
  upface=false;
  leftface=false;
  rightface=true;
  downface=false;
  fillVal=200;

```

}  
if(key == ’ '){  
sword=true;  
if(upface==true){  
swordx=xpos;  
swordy=ypos-50;  
swordsx=20;  
swordsy=50;  
rect(swordx,swordy,swordsx,swordsy);  
}  
if(downface==true){  
swordsx=20;  
swordsy=50;  
swordx=xpos;  
swordy=ypos+50;  
rect(swordx,swordy,swordsx,swordsy);  
}

```
if(leftface==true){
    swordsx=50;
    swordsy=20;
    swordx=xpos-50;
    swordy=ypos+5;
    rect(xpos-50,ypos+5,swordsx,swordsy);
}
      if(rightface==true){
      swordsx=50;
      swordsy=20;
      swordx=xpos+50;
      swordy=ypos+5;
    rect(xpos+50,ypos+5,swordsx,swordsy);
}

  else{
  sword=false;
}
}

```

}

}//end of move  
}//end to class

class desertbackground {  
float xrect,yrect,dx,dy,dsx,dsy;  
desertbackground(float basedx, float basedy, float basedsx, float basedsy){  
dx=basedx;  
dy=basedy;  
dsx=basedsx;  
dsy=basedsy;  
}

void varable(){  
xrect=dx;  
yrect=dy;  
}  
void display(){  
//noStroke();  
xrect=xrect+c1.xwmove;  
yrect=yrect+c1.ywmove;  
fill(170,109,50);  
rect(xrect,yrect,dsx,dsy);  
/_for(int dex;dex\<10;dex++ ){  
for(int dey;dey\<10;dey++){  
fill(170,129,50);  
rect(dx+dex_100-dx/2,dy+dey_100,20,20);  
}  
}_/  
}//end of display  
}//end of class

class wbackground{  
float wx,wy,wsx,wsy,wwxmove,wwymove,wchigh,wclow,wavesx,wavesy;  
float woff = 0.0;  
wbackground(float waterx, float watery, float watersx, float watersy){  
wx=waterx;  
wy=watery ;  
wsx=watersx;  
wsy=watersy;  
wavesx=watersx/2;  
wavesy =watersy/2;

}

void display(){

```
noStroke();
rectMode(CENTER);
	wyhigh=wy-(wsy/2);
wxhigh=wx-(wsx/2);
wxlow = wx+(wsx/2);
	wylow=wy+(wsy/2);

wwxmove=wwxmove+c1.xwmove;
wwymove=wwymove+c1.ywmove;
fill(173,200,250,150);
	rect(wx+wwxmove,wy+wwymove,wsx+10,wsy+10);
	fill(0,100,250);
rect(wx+wwxmove,wy+wwymove,wsx,wsy);
for(int wavex; wavex<wsx/100;wavex++){
  for(int wavey; wavey<wsy/100;wavey++){
			woff = woff + .005;
		float n = noise(woff)*10;
    fill(173,200,230,100);
  	rect(wx-50+wwxmove+wavesx+wavex*-100,wy-50+wwymove+wavesy+wavey*-100+n,50,10);//wave pixles
    rect(wx-50+wwxmove+wavesx+wavex*-100,wy-50+wwymove+wavesy+wavey*-100-10+n,20,10);//wave pixles
			fill(0,100,250);
			rect(wx-50+wwxmove+wavesx+wavex*-100,wy-50+wwymove+wavesy+wavey*-100+n,10,10);//wave pixles
  }//wavey end
}//wavex end

if( c1.xpos < wx+wwxmove + (wsx+10)/2 && c1.xpos > wx+wwxmove - (wsx+10)/2 && c1.ypos < wy+wwymove + (wsy+10)/2 && c1.ypos > wy+wwymove - (wsy+10)/2){
	/*print("bb");
	print(c1.xpos);			
	print(c1.ypos);*/
	//this is where i can figure out how to get the player to not move over the water
		
	}//end of if

```

}//end of display  
}// end of water