My Sketch - OpenProcessing

mySketch
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  let ripplefade = 255;
  let swimup = 350
  let swimleft = 690
  let ripplegrow = 0
  let spin = 0
  let waterlevel = 200
  let goleft = 100
  let goup = 190
  let extraCanvas;
function setup() {
  
  createCanvas(700, 700);
   extraCanvas = createGraphics(700, 700)
  extraCanvas.clear();
  background(0,200,300)
  
}
function draw () {
​
  
  //tankbottom
  fill(237, 197, 88)
  rect(100,0,600,700)
  fill(200,200,130)
  quad(goup,goleft+6,goup,goleft-6,196,100,184,100)
    fill(237, 167, 58,150)
  rect(220,220,150,200)
  ellipse(195,560,55,50)
  ellipse(160,520,120,105)
  ellipse(610,30,200,160)
  ellipse(570,620,70,72)
  //snail shadow
  ellipse(goup-5, goleft+5,35,12)
  triangle(goup+11,goleft+5,goup+35,goleft-3,goup-1,goleft-1)
  triangle(goup+11,goleft+5,goup+35,goleft+13,goup-1,goleft+11)
  circle(goup+35,goleft-3,5)
  circle(goup+35,goleft+13,5)
  ellipse(goup,goleft+5,29,18)
  //fish shadow
  fill(237, 167, 58)
  swimup = swimup - 1/2;
  swimup = constrain(swimup,240,600)
  swimleft = swimleft - 3/2;
  swimleft = constrain(swimleft,250,800)
  ellipse(swimup+20,swimleft+20,20,50)
  triangle(swimup+20,swimleft,swimup+20,swimleft+20,swimup,swimleft+20)
  triangle(swimup+20,swimleft,swimup+20,swimleft+20,swimup+40,swimleft+20)
  triangle(swimup+20,swimleft+20,swimup+10,swimleft+50,swimup+30,swimleft+50)
  //crab shadow
  push();
  translate (505,305); 
  rotate(radians(spin)); 
  fill (237, 167, 58)
  ellipse (0,0,50,30);
  triangle(0,7,0,-7,random(20,30),-20)
  triangle(0,7,0,-7,random(-20,-30),-20)
  triangle(0,7,0,-7,random(30,40),5)
  triangle(0,7,0,-7,random(-30,-40),5)
  quad(5,-10,-5,-10,30,35,35,30)
  quad(-5,-10,5,-10,-30,35,-35,30)
  ellipse(30,35,15,15)
  ellipse(-30,35,15,15)
  fill(237, 197, 88)
  triangle(30,35,23,40,20,30)
  triangle(-30,35,-23,40,-20,30)
  spin = spin - 1;
  pop(); 
  
  //scuttle
    push();
  translate (-mouseX+605,-mouseY+605); 
  rotate(radians(spin)); 
  fill(237, 167, 58)
  ellipse(0,-0,20,20)
  stroke(237, 167, 58)
  strokeWeight(6)
  line(15,random(-2,2),-15,random(-2,2))
  line(random(-2,2),15,random(-2,2),-15)
  line(random(9,11),random(9,11),random(-9,-11),random(-9,-11))
  strokeWeight(0)
  ellipse(2,5,3,3)
  ellipse(-3,-2,3,3)
  spin = spin - 1/5;
  pop(); 
  
    push();
  translate (-mouseX+600,-mouseY+600); 
  rotate(radians(spin)); 
  fill(80,0,20)
  ellipse(0,-0,20,20)
  stroke(80,0,20)
  strokeWeight(6)
  line(15,random(-2,2),-15,random(-2,2))
  line(random(-2,2),15,random(-2,2),-15)
  line(random(9,11),random(9,11),random(-9,-11),random(-9,-11))
  fill(255,255,255)
  strokeWeight(0)
  ellipse(2,5,3,3)
  ellipse(-3,-2,3,3)
  spin = spin - 1/5;
  pop(); 
  
  //snail
  
  fill(250,250,255)
  goup = goup + 1/2
  goup = constrain(goup,190,560)
  ellipse(goup-10, goleft, 35,12)
  triangle(goup+6,goleft,goup+30,goleft-8,goup-6,goleft-6)
  triangle(goup+6,goleft,goup+30,goleft+8,goup-6,goleft+6)
  circle(goup+30,goleft-8,5)
  circle(goup+30,goleft+8,5)
  fill(145, 124, 60)
  ellipse(goup-5,goleft,29,18)
  
  //rocks n stuff
  fill(87, 143, 150)
  stroke(61, 92, 58)
  strokeWeight(6)
  ellipse(175,550,55,50)
  ellipse(150,500,100,105)
  ellipse(590,10,200,160)
  ellipse(550,600,70,72)
  rect(200,200,150,200)
  strokeWeight(0)
  fill(57, 95, 99)
  rect(220,220,110,160)
  fill(61, 92, 58)
  ellipse(120,460,60,60)
  ellipse(145,555,30,25)
  ellipse(100,700,100,100)
  ellipse(100,660,40,40)
  ellipse(90,620,50,50)
  ellipse(140,705,50,50)
  ellipse(165,705,20,20)
  ellipse(180,705,10,10)
  ellipse(100,0,150,150)
  ellipse(180,0,50,50)
  ellipse(210,0,20,20)
  ellipse(100,75,80,80)
  ellipse(100,110,30,30)
  ellipse(100,125,15,15)
  ellipse(600,700,70,70)
  ellipse(600,660,40,40)
  ellipse(600,630,15,15)
  ellipse(550,700,35,35)
  ellipse(530,700,20,20)
  
  
  
  //fish
  fill(255, 136, 0)
  swimup = swimup - 1/2;
  swimup = constrain(swimup,240,600)
  swimleft = swimleft - 3/2;
  swimleft = constrain(swimleft,250,800)
  ellipse(swimup,swimleft,20,50)
  triangle(swimup,swimleft-20,swimup,swimleft,swimup-20,swimleft)
  triangle(swimup,swimleft-20,swimup,swimleft,swimup+20,swimleft)
  triangle(swimup,swimleft,swimup-10,swimleft+30,swimup+10,swimleft+30)
  fill(0,0,0)
  ellipse(swimup-5,swimleft-10,3,7)
  ellipse(swimup+5,swimleft-10,3,7)
  
  
  //crab
  push();
  translate (500,300); 
  rotate(radians(spin)); 
  fill (255,80,0);
  ellipse (0,0,50,30);
  triangle(0,7,0,-7,random(20,30),-20)
  triangle(0,7,0,-7,random(-20,-30),-20)
  triangle(0,7,0,-7,random(30,40),5)
  triangle(0,7,0,-7,random(-30,-40),5)
  quad(5,-10,-5,-10,30,35,35,30)
  quad(-5,-10,5,-10,-30,35,-35,30)
  ellipse(30,35,15,15)
  ellipse(-30,35,15,15)
  fill(0,0,0)
  ellipse(10,10,3,7)
  ellipse(-10,10,3,7)
  fill(237, 197, 88)
  triangle(30,35,23,40,20,30)
  triangle(-30,35,-23,40,-20,30)
  spin = spin + 0;
  pop(); 
  
  
  //castle
​
  fill(87, 143, 150)
  stroke(61, 92, 58)
  strokeWeight(6)
  rect(200,200,150,200)
  strokeWeight(0)
  fill(57, 95, 99)
  rect(220,220,110,160)
  
  
  //water
  fill(0,200,300,waterlevel)
  rect(100,0,600,700)
  waterlevel = waterlevel - 1/2
  waterlevel = constrain(waterlevel,60,200)
  
  //buuble
  fill(300,300,300,random(waterlevel))
  ellipse(random(100,600),random(700),20,20)
  ellipse(random(100,600),random(700),50,50)
  ellipse(random(100,600),random(700),30,30)
  ellipse(random(100,600),random(700),20,20)
  ellipse(random(100,600),random(700),40,40)
  ellipse(random(100,600),random(700),20,20)
  ellipse(random(100,600),random(700),35,35)
  ellipse(random(100,600),random(700),15,15)
  ellipse(random(100,600),random(700),10,10)
  
  //ripple
  strokeWeight(10)
  stroke(255,255,255,ripplefade)
ripplefade = ripplefade - 1
ripplegrow = ripplegrow + 1
  fill(0,200,300,0)
  ellipse(mouseX,mouseY,ripplegrow+340,ripplegrow+340)
  stroke(255,255,255,ripplefade)
  ellipse(mouseX,mouseY,ripplegrow+170,ripplegrow+170)
  stroke(255,255,255,ripplefade+50)
  ellipse(mouseX,mouseY,ripplegrow+70,ripplegrow+70)
  stroke(255,255,255,ripplefade+125)
  ellipse(mouseX,mouseY,ripplegrow+20,ripplegrow+20)
  
  
  
  //tanksides
  strokeWeight(0)
  fill(0,200,300)
  rect(0,0,100,700)
  rect(600,0,100,700)
  
  
}