//variables
Ship ship = new Ship();

Meteor meteor = new Meteor();

Meteor meteor1 = new Meteor();

float backgroundOther = 255;


float meteorStartY;



float determineSpawn;

int projectileX;

//arrays and pvectors
PVector playerPosition = new PVector (mouseX, mouseY);
int [] projectilePosition = new int[2];
PVector meteorPosition = new PVector();

boolean isFire = false;


void setup() {
  size(800, 600);
}



void draw() {
  frameRate(400);
//the only background color that changes is red
  background(255, backgroundOther, backgroundOther);
  //this tells the enemy to randomly spawn along the Y axis
  determineSpawn = random(100);

  //this is how the player is moved
  playerPosition.x = mouseX;
  playerPosition.y = mouseY;


  //these are the object references
  meteor.StartY();
  meteor.Move();
  meteor1.StartY();
  meteor1.Move();
  ship.drawShip();
  keyPressed();
  ship.Update();


  //these are the hit conditions 
  if (dist(playerPosition.x, playerPosition.y, meteorPosition.x, meteorPosition.y) < 100) {
    backgroundOther = backgroundOther -0.3;
    print("shot");
  }
  //if the player hits the meteor
  if (dist(meteorPosition.x, meteorPosition.y, projectilePosition[0], projectilePosition[1]) < 100) {
    backgroundOther = backgroundOther + -1;
    print("hit");
  }
}

//these fire the projectile with W
void keyPressed() {
  if (keyCode == 87) {
    isFire = true;
    projectileX = projectileX - 10;
  }
  if (keyCode != 87) {
    isFire = false;
    projectileX = projectileX - 10;
  }
}

class Meteor {

  float meteorSpeed = -1;


  void StartY() {
    if (meteorSpeed < 0) {
      meteorStartY = random(0, 600);
    }
    if (meteorSpeed > width) {
      meteorSpeed = -10;
    }
  }


  void Move() {

    meteorSpeed = meteorSpeed + random(0, 5); //makes the meteor jerk around while moving
    fill(0); //colour

    ellipse(meteorSpeed, meteorStartY, 100, 100); //creates the meteors
  
  
    meteorPosition.x = meteorSpeed; //moves the meteor according to speed

}
}

class Ship {




  void drawShip() {

    fill(255, 0, 0);
    ellipse(mouseX, mouseY, 10, 10);
    if (isFire == false) {
      projectileX = mouseX;
    }
  }
  void Update() {
    rect(projectileX, mouseY, 10, 10);
    projectilePosition [0] = projectileX;
    projectilePosition [1] = mouseY;
  }
}