GameTankFull

float xtank = 600, ytank = 500, tankspeed = 5;
boolean isfire = false;
float xfire, yfire, firespeed = 10, firer = 10;
float xballG, yballG, rballG;
float xballR, yballR, rballR;
int score = 0;
int max = 0;
boolean gameover = false;

void setup(){
  size(1500, 900);
  yballG = 50;
  xballG = random(30, width);
  rballG = 30;
  yballR = 50;
  xballR = random(30, width);
  rballR = 30;
}

void draw(){
  if (gameover == false) {
    background(204, 216, 42);

    fill(0, 255, 0);
    ellipse(xballG, yballG, 2*rballG, 2*rballG);

    fill(255, 0, 0);
    ellipse(xballR, yballR, 2*rballR, 2*rballR);

    fill(50, 142, 30);
    rect(xtank, ytank, 120, 120);
    fill(140, 67, 155);
    ellipse(xtank + 60, ytank, 80, 80);
    fill(193, 66, 77);
    rect(xtank + 50, ytank - 100, 20, 100);

    if (keyPressed){
      if (keyCode == UP){
        ytank = ytank - tankspeed;
      } else if (keyCode == DOWN){
        ytank = ytank + tankspeed;
      } else if (keyCode == LEFT){
        xtank = xtank - tankspeed;
      } else if (keyCode == RIGHT){
        xtank = xtank + tankspeed;
      }
    }

    if (ytank < height / 2){
      ytank = height / 2;
    }
    if (ytank > height - 120){
      ytank = height - 120;
    }
    if (xtank < 0){
      xtank = 0;
    }
    if (xtank > width - 120){
      xtank = width - 120;
    }

    if (keyPressed && key == ' ' && !isfire){
      isfire = true;
      xfire = xtank + 60;
      yfire = ytank - 100;
    }

    if (isfire){
      fill(255, 0, 0);
      ellipse(xfire, yfire, 2*firer, 2*firer);
      yfire = yfire - firespeed;
      if (yfire < 0){
        isfire = false;
      }
    }

    if (dist(xfire, yfire, xballG, yballG) < firer + rballG){
      xballG = random(30, width - 50);
      xballR = random(30, width - 50);
      score++;
    }

    if (dist(xfire, yfire, xballR, yballR) < firer + rballR){
      gameover = true;
    }

    fill(0);
    textSize(50);
    text("Score: " + score, 150, 250);
  } else {
    background(255, 0, 0);
    fill(0);
    textSize(100);
    text("GAMEOVER!", 100, 100);
    text("Your score: " + score, 100, 250);
    text("Press R to continue...", 100, 500);
    if (score > max){
      max = score;
    }
    text("Max score: " + max, 100, 350);
    if (keyPressed && key == 'r'){
      gameover = false;
      isfire = false;
      xfire = -100;
      score = 0;
    }
  }
}