Examples

05A - Attach image

Let's attach images to the previously created bodies. Images should be in PNG format if you want to set transparency, and they should be located in the "data" folder of your Processing Sketch.

Applet

Code

//Import all Phys2D libraries
import pphys2d.bodies.*;
import pphys2d.joints.*;
import pphys2d.shapes.*;
import pphys2d.phys2d.raw.collide.*;
import pphys2d.phys2d.raw.strategies.*;
import pphys2d.phys2d.raw.forcesource.*;
import pphys2d.phys2d.util.*;
import pphys2d.phys2d.raw.shapes.*;
import pphys2d.*;

//Create a PPhys2D world
PPWorld world = new PPWorld();

//Create a PPhys2D Box
PPBox myBox;

//Create a PPhys2D Circle
PPCircle myCircle;

//Create an Array to hold keys
boolean[] keyIsPressed = new boolean[512];

void setup () {

  //Set size and framerate
  frameRate(30);
  size(500,500);

  //Set a standard world gravity
  world.setGravity(0, 200);

  //Add a box to the world
  myBox = new PPBox(65, 108);
  myBox.setPosition(250, 100);
  myBox.setStrokeWidth(1);
  myBox.setRotation(2*PI);
  //Attach "/data/spaceship.png" to the body
  myBox.attachImage(loadImage("spaceship.png"));
  world.add(myBox);

  //Add a static circle to the world
  myCircle = new PPCircle(75);
  myCircle.setPosition(220, 250);
  myCircle.setStaticBody(true);
  //Attach "/data/panet.png" to the body
  myCircle.attachImage(loadImage("planet.png"));
  world.add(myCircle);

  //Set world edges in dark gray
  world.setEdges(this, new Color (40, 40, 40));

}

void draw () {
  //Clear screen
  background(255);
  //Draw world
  world.draw(this);
  //Check if a key has been pressed add add force
  checkKey();
}

void keyPressed() {
  //Set presed key code
  keyIsPressed[keyCode] = true;
}

void keyReleased() {
  //Set presed key code
  keyIsPressed[keyCode] = false;
}

void checkKey() {
  if(keyIsPressed[38])myBox.addForce(0, -80000); //UP
  if(keyIsPressed[40])myBox.addForce(0, 80000); //DOWN
  if(keyIsPressed[37])myBox.addForce(-80000, 0); //LEFT
  if(keyIsPressed[39])myBox.addForce(80000, 0); //RIGHT
}