Mouse Press on Image to Add Extra Lives

Kelsey

I have a scoreboard and life displayer in my program. I have a random object flying around the screen. I want the user to be able to press on the flying object and they will earn an extra life each time they click on it. What is the code I would need for this?

Kelsey

import processing.sound.*; //Import background music
SoundFile file;

//Arrays
DuckLine[] ducks = new DuckLine[0];
DuckLineLeft[] ducks2 = new DuckLineLeft[0];
Particle[] particles = new Particle[0]; //particles that appear when duck is shot //#creative

//Ints
int score = 0;
int lives=5;
boolean GameOver = false;

//Images
PImage duck; //bottom green ducks (originial duck images from Duck Hunt)
PImage BG; //origninal Nintendo Duck Hunt background
PImage ducksmall; //top purple ducks (originial duck images from Duck Hunt)
PImage MouseCursor; //use originial Duck Hunt gun that came with game
PImage bulletbill; //bulletbill is "ammo"! Click on him to earn an extra life

//Position for bulletbill
int siz = 30;
int posX = 5; //initial position
int posY = 100;
int velX = 4; 
int velY = 6;
int radius = 25;

void setup() {
  size(1020, 720);
  bulletbill = loadImage("bulletbill.png"); //load the image in the setup section
  smooth();

  // Load a soundfile from the /data folder of the sketch and play it back
  file = new SoundFile(this, "backgroundmusic.mp3"); //#creative
  file.play();

  MouseCursor = loadImage("MouseCursor.png"); //create gun cursor
  //#creative

  //Images
  BG = loadImage ("BG.png");
  duck = loadImage ("duck.png");
  ducksmall = loadImage ("ducksmall.png");
}

void draw() {

  {
    if (mouseX < 100) {
      cursor(MouseCursor, 0, 0);
    } else {
      cursor(MouseCursor);
    }
  }

  if (!GameOver) {  
    background(BG);

    //Particles
    while (particles.length>maxParticles) {
      particles = (Particle[]) subset(particles, 1);
    }
    for (int i=0; i<particles.length; i++) {  
      particles[i].update();
    }

    //Inset Bulletbill and move him around screen randomly
    posX = posX + velX; //these ones must be within the brackets but the initial variables must be at the top
    posY = posY + velY;

    //creates X and Y borders
    if (posX > width ||posX < 0) {
      velX = velX * -1;
    }
    if (posY > height ||posY < 0) {
      velY = velY * -1;
    }
    //point the bouncing elements
    //ellipse(posX, posY, 30, 30);
    image(bulletbill, posX-50, posY-22);

    //Add a new duck 
    if (frameCount % 40 == 0) {
      DuckLine duck = new DuckLine();
      ducks = (DuckLine[]) append(ducks, duck);
    }

    if (frameCount%40==0) {
      DuckLineLeft duck2 = new DuckLineLeft();
      ducks2 = (DuckLineLeft[]) append(ducks2, duck2);
    }
    //Remove Duck after 30 have been created
    if (ducks.length>30) {
      ducks = (DuckLine[]) subset(ducks, 1);
      ducks2 = (DuckLineLeft[]) subset(ducks2, 1);
    }
    //Move Duck
    for (int i = 0; i<ducks.length; i++) {
      ducks[i].update();
      ducks2[i].update();
    }
  } else {
    fill(255);
    textSize(26);
    text("GAME OVER", width/2-100, height/2); 
    text("Press any key to play again", width/2-100, height/2+100); 
    frameCount=0;
    if (keyPressed == true) {
      reset();
    }
  }
  //Check if duck has left the stage
  for (int i = 0; i<ducks.length; i++) {
    DuckLine duck = ducks[i];
    if ((duck.x<-20)&&(duck.x>-23)) {
      lives--;
    }
  }

  //Check if duck has left the stage
  for (int i = 0; i<ducks.length; i++) {
    DuckLineLeft duck2 = ducks2[i];
    if ((duck2.x>width+duck2.w) && (duck2.x<width+duck2.w+3)) {
      lives--;
    }
  }

  //println(mouseX + "." +  mouseY);
  // Game Over   
  if (lives<0) {
    GameOver =true; 
    lives=0;
  } 

  image(BG, 1020, 720);  //Background image size

  //Score 
  textSize(26);
  fill(255);
  stroke(0);
  rect(440, 559, 150, 80);
  fill(0);
  text("Score:" + score, 457, 569+20);
  text("Lives:" + lives, 457, 600+20);
} // End of Draw

void mousePressed() {
  {
    file = new SoundFile(this, "gunshot.mp3"); //Play gunshot sound when mouse pressed
    file.play();
    //#creative
  }

  for (int i = 0; i<ducks.length; i++) {
    DuckLine duck = ducks[i];
    if ((mouseX>duck.x) && (mouseX<duck.x + duck.w) && (mouseY>duck.y) && (mouseY<duck.y+duck.h)) {
      duck.alive = false;
      score++;
      for (int ii = 0; ii<30; ii++) {
        Particle p = new Particle(mouseX, mouseY);
        p.yVel = random(-2, 2);
        p.xVel = random(-5, 5);
        p.gravity = 0.1;
        p.shrink = 0.94;
        particles = (Particle[]) append(particles, p );
      }
    }
  }
  for (int i = 0; i<ducks2.length; i++) {
    DuckLineLeft duck2 = ducks2[i];
    if ((mouseX>duck2.x) && (mouseX<duck2.x + duck2.w) && (mouseY>duck2.y) && (mouseY<duck2.y+duck2.h)) {
      duck2.alive = false;
      score++;
      for (int ii = 0; ii<30; ii++) {
        Particle p = new Particle(mouseX, mouseY);
        p.yVel = random(-2, 2);
        p.xVel = random(-5, 5);
        p.gravity = 0.1;
        p.shrink = 0.94;
        particles = (Particle[]) append(particles, p );
      }
    }
  }
}

float maxParticles = 50; //Particles that appear when duck is shot
class Particle {

  float x;
  float y;
  float xVel;
  float yVel;
  float particleSize;
  float opacity;
  float gravity;
  float fadeSpeed;
  float shrink;

  Particle(float xpos, float ypos) {
    x = xpos;
    y = ypos;
    xVel = random(-5, 5);
    yVel = random(-5, 5);
    particleSize = random(1, 5);
    opacity = 255;
    gravity = 0;
    fadeSpeed = 1;
    shrink =2;
  }

  void update() { //Update game
    x+=xVel;
    y+=yVel;
    opacity*=fadeSpeed;
    yVel += gravity;
    particleSize*=shrink;

    //noStroke();
    fill(255, 0, 0, opacity); //Blood red particles when killed 
    ellipse(x, y, particleSize, particleSize);
  }
}

void reset() { //Reset game
  lives =5;
  score=0;
  GameOver = false;
  ducks = (DuckLine[]) new DuckLine[0];
  ducks2 = (DuckLineLeft[]) new DuckLineLeft[0];
}

//CLASS DUCKLINE
class DuckLine { //Purple duck line coming in at right
  float x;
  float y;
  float w;
  float h;
  float velX;
  float velY;
  float speed;
  boolean alive;
  DuckLine() {
    y = 200;
    w = 50;
    x = width+30;
    h = 50;
    velX = -2;
    velY = 0;
    alive = true;
    speed=-1;
  } 
  void update() {
    x+=velX;
    y+=velY*speed;     
    if (alive) {
      fill(255, 0, 0);
      stroke(255);
    } else {
      fill(0, 0, 0); 
      noStroke();
      velY-=1;
      velX=0;
      x=-1000;
    }
    image(ducksmall, x-50, y-20);
  }
}

CLASS DUCKLINE LEFT
class DuckLineLeft { //Green duckline coming in at left
  float x;
  float y;
  float w;
  float h;
  float velX;
  float velY;
  boolean alive;
  DuckLineLeft() {
    y = 400;
    w = 80;
    x = 0-w-50;
    h = 80;
    velX = -2;
    velY = 0;
    alive = true;
  } 
  void update() {
    x-=velX;
    y+=velY;     
    if (alive) {
      fill(255, 0, 0);
      stroke(255);
    } else {
      fill(0, 0, 0); 
      noStroke();
      velY+=1;
      velX=0;
      x=-1000;
    }

    image(duck, x-50, y-40);
 }
}

kfrajer

Please edit your post (gear icon in the top right corner of your post), select your code and hit ctrl+o to format your code. Make sure there is an empty line above and below your code.

Kf

jeremydouglass

You want an if check that is a "collision detection", based on the shape and location of your object compared to the location of the mouse when clicked.

http://www.jeffreythompson.org/collision-detection/table_of_contents.php

On click, IF a collision is detected THEN lives++

http://www.jeffreythompson.org/collision-detection/point-rect.php

For example, check out Point / Rectangle collision examples if your target hit box is rectangular.

Kelsey

Thank you but I'm still unsure how to correctly type the collision code to detect my image "bulletbill.png" that moves randomly across the screen. Can you show me the code for that and where to put it? I'm very new to coding.