//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.*;

int frame = 0;
int numFrames = 50;
PImage[] monsterAnimation = new PImage[numFrames*2];
PFont fontVerdana10;

PPWorld world = new PPWorld();
PPBox outlineMonster;

boolean[] keyIsPressed = new boolean[512];

int goingRight = 0;

void setup () {

  frameRate(30);
  size(800,400);
  background(0);

  fontVerdana10 = loadFont("Verdana-10.vlw"); 
  textFont(fontVerdana10); 

  world.setGravity(0, 0);

  
  //Add a box to the world
  outlineMonster = new PPBox(150, 313);
  outlineMonster.setPosition(width/2,200);
  outlineMonster.setStrokeWidth(0);
  outlineMonster.setRotatable(false);
  world.add(outlineMonster);

  world.setEdges(this, new Color (0));
  world.setEdgesRestitution(300f);
  //world.setDamping(0.2f); 
  
  //Load images
  for (int i = 0; i<numFrames; i++) {
    PImage img = loadImage("MonsterRun"+nf(i,5)+".png");
    monsterAnimation[i] = img;
  }

  //Reverse images
  for (int i = numFrames; i<numFrames*2; i++) {
    PImage img = loadImage("MonsterRun"+nf(i-numFrames,5)+".png");

    // Begin loop for width
    for (int i2 = 0; i2 < monsterAnimation[i-numFrames].width; i2++) {
      // Begin loop for height
      for (int j = 0; j < monsterAnimation[i-numFrames].height; j++) {    
        img.pixels[j*monsterAnimation[i-numFrames].width+i2] = monsterAnimation[i-numFrames].pixels[(monsterAnimation[i-numFrames].width - i2 - 1) + j*monsterAnimation[i-numFrames].width]; // Reversing x to mirror the image
      }
    }

    monsterAnimation[i] = img;    
  }
}


void draw () {

  //text
  fill(120);
  text("Press left or right arrow to move the monster", 280, height-13);

  fill(0,80);
  rect(width/2,height/2,width,height);

  

  frame = (frame+1) % numFrames;

  outlineMonster.attachImage( monsterAnimation [(int)(frame/2 + goingRight*numFrames)] );

  world.draw(this);  
  checkKey();
}

void keyPressed() {
  keyIsPressed[keyCode] = true;
}


void keyReleased() {
  keyIsPressed[keyCode] = false;
}


void checkKey() {     
  if(keyIsPressed[37]) {
    //LEFT
    outlineMonster.addForce(-80000, 0); 
    goingRight = 0;
  }    
  if(keyIsPressed[39]) {
    //RIGHT
    outlineMonster.addForce(80000.0f, 0);
    goingRight = 1;
  } 
}