Notes

float xRan; //random x of food
float yRan; //random y of food
float xPois; //random x of poison
float yPois; // random y of poison
float xPois2; //random x of 2nd poison
float yPois2; //random y of 2nd poison
float xPois3; //random x of 3rd pois
float yPois3; //random y of 3rd pois
PVector position; // Position of the ball
PVector position2; //position of poison
PVector pois2nd; //2nd position of poison
PVector pois3rd; //3rd pos of pois
PVector velocity; // starting velocity of the ball
PVector velocity2; //poison velocity
PVector velocity3; //2nd poison velocity
PVector velocity4; //3rd pois veloc
boolean upperBound;//upper bound boolean expression
boolean lowerBound; //lowerbound boolean expression
float targetSize=10; //diameter of ellipse
boolean poisonCollision1; //upper bound poison
boolean poisonCollision2; //lower bound poison
boolean poison2Collision1; //upper bound poison 2
boolean poison2Collision2; //lower bound poison 2
boolean poison3Collision1; //upper bound pois 3
boolean poison3Collision2; //lowe bound pois 3
void setup() {
size(1080, 720);
frameRate(60);
xRan=(int)random(10, width-10);
yRan= (int)random(10, height-10);
position = new PVector(width-60, height/2);
position2=new PVector(random(40,width),random(10,height));
pois2nd=new PVector(random(40,width),random(10,height));
pois3rd=new PVector(random(40,width),random(10,height));
velocity = new PVector(0, 0); //starting velocity of the snake going from left to right of the screen

}

void draw() {
color cool;
float R = random(255.0);
float G = random (255.0);
float B = random (255.0);
velocity2=new PVector(random(-10,10),random(-10,10)); //starting velocity of the poison
velocity3=new PVector(random(-10,10),random(-10,10));//starting velocity of the poison
velocity4=new PVector(random(-10,10),random(-10,10));
cool=color(R, G, B); //randomly generated colour for additional snake piece upon consuming ball
background(50, 200, 100);
fill(cool);
ellipse(position.x, position.y, targetSize, targetSize);
fill(207,255,4);
triangle(position2.x-50,position2.y,position2.x-30,position2.y,position2.x-40,position2.y-10); //poison piece #1
triangle(pois2nd.x-50,pois2nd.y,pois2nd.x-30,pois2nd.y,pois2nd.x-40,pois2nd.y-10); //poison piece #2
triangle(pois3rd.x-50,pois3rd.y,pois3rd.x-30,pois3rd.y,pois3rd.x-40,pois3rd.y-10); //poison piece #3
upperBound=(position.x-.5*targetSize<=xRan && position.x+.5*targetSize>=xRan);
lowerBound=(position.y-.5*targetSize<=yRan && position.y+.5*targetSize>=yRan);
poisonCollision1=(position.x-.5*targetSize<=position2.x-50 && position.x+.5*targetSize>=position2.x-50);
poisonCollision2=(position.y-.5*targetSize<=position2.y && position.y+.5*targetSize>=position2.y);
poison2Collision1=(position.x-.5*targetSize<=pois2nd.x-50 && position.x+.5*targetSize>=pois2nd.x-50);
poison2Collision2=(position.y-.5*targetSize<=pois2nd.y && position.y+.5*targetSize>=pois2nd.y);
poison3Collision1=(position.x-.5*targetSize<=pois3rd.x-50 && position.x+.5*targetSize>=pois3rd.x-50);
poison3Collision2=(position.y-.5*targetSize<=pois3rd.y && position.y+.5*targetSize>=pois3rd.y);

println(poisonCollision1,poisonCollision2);
println(targetSize);
if (upperBound==true && lowerBound==true) {
targetSize=targetSize+10;
xRan=random(0, width);
yRan=random(0, height);

}
if (poisonCollision1==true && poisonCollision2==true) {
targetSize=targetSize-10;
}
if (poison2Collision1==true && poison2Collision2==true) {
targetSize=targetSize-10;
}




position.x = position.x + velocity.x;
position.y = position.y + velocity.y;
position2.x = position2.x + velocity2.x;
position2.y = position2.y + velocity2.y;
pois2nd.x =pois2nd.x + velocity3.x;
pois2nd.y =pois2nd.y + velocity3.y;
pois3rd.x =pois3rd.x + velocity4.x;
pois3rd.y =pois3rd.y + velocity4.y;
fill(255, 0, 0);
ellipse(xRan, yRan, 10, 10);
if (position2.x<40){
position2.x=position2.x+10;}
if (position2.x>width-40){
position2.x=position2.x-10;}
if (position2.y<10){
position2.y=position2.y+10;}
if (position2.y>710){
position2.y=position2.y-10;}
if (pois2nd.x<40){
pois2nd.x=pois2nd.x+10;}
if (pois2nd.x>width-40){
pois2nd.x=pois2nd.x-10;}
if (pois2nd.y<10){
pois2nd.y=pois2nd.y+10;}
if (pois2nd.y>710){
pois2nd.y=pois2nd.y-10;}
if (pois2nd.x<40){
pois2nd.x=pois2nd.x+10;}
if (pois3rd.x>width-40){
pois3rd.x=pois3rd.x-10;}
if (pois3rd.y<10){
pois3rd.y=pois3rd.y+10;}
if (pois3rd.y>710){
pois3rd.y=pois3rd.y-10;}

if (position.x<0.5*targetSize ) {
fill(0);
textAlign(CENTER, CENTER);
textSize(100);
text("GAME OVER!", width/2, height/2);
frameRate(0);
}
if (position.y<0.5*targetSize ) {
fill(0);
textAlign(CENTER, CENTER);
textSize(100);
text("GAME OVER!", width/2, height/2);
frameRate(0);
}
if (position.x>1080-0.5*targetSize ) {
fill(0);
textAlign(CENTER, CENTER);
textSize(100);
text("GAME OVER!", width/2, height/2);
frameRate(0);
}
if (position.y>720-0.5*targetSize ) {
fill(0);
textAlign(CENTER, CENTER);
textSize(100);
text("GAME OVER!", width/2, height/2);
frameRate(0);
}
if (targetSize<5){
fill(0);
textAlign(CENTER, CENTER);
textSize(100);
text("GAME OVER!", width/2, height/2);
frameRate(0);}
}
void keyPressed() {
if (key=='d' && position.x<1080) {
position.x=position.x+10;
}

if (key=='a' && position.x>0) {
position.x=position.x-10;
}
if (key=='w' && position.y>0) {
position.y=position.y-10;
}
if (key=='s' && position.y<720) {
position.y=position.y+10;
}
}