//textBoxOne variables
PFont fontA;
int textBoxOneX = 600;

//Window settings
int windowWidth = 1920;
int windowHeight = 1200;

//Image settings
PImage a; //Temporary holder
PImage[][] mapHolder; //Array holder
int mapImageWidth = 256;
int mapImageHeight = 256;
String mapImagePath;

//Map settings
String mapType = "Map"; //Currently two modes (Map/Sat)
//Starting position
int xPos = 71195; 
int yPos = 39185;
//This is the allowed space to move in
int xPosMin = 70195;
int xPosMax = 72213;
int yPosMin = 38185;
int yPosMax = 40211;

/*This is the space which contains images
int xPosMin = 71195;
int xPosMax = 71213;
int yPosMin = 39185;
int yPosMax = 39211;
*/

//The xSpan and ySpan is the number of images which will be loaded simultaneously 
//((number of images to cover up the window) times three so that one can look around with mouse without the need to load more images)
int xSpan = (windowWidth/mapImageWidth) + 1;
int ySpan = (windowHeight/mapImageHeight) + 1;

void setup(){
  size(windowWidth,windowHeight);
  background(200);
  noLoop();
  
  //Text
  fontA = loadFont("CourierNew36.vlw");
  textFont(fontA, 20);  
  textMode(MODEL);
  println(xSpan*ySpan);
}

void keyPressed(){
  if (key != CODED) {
    switch (key) {
      case 'x': mapType = "Map"; redraw(); break;
      case 'c': mapType = "Sat"; redraw(); break;
    }
  } else {
    switch (keyCode) {
      case UP: moveMap(1,2); break;
      case DOWN: moveMap(1,3); break;
      case LEFT: moveMap(1,1); break;
      case RIGHT: moveMap(1,4); break;
    }
  }
  
}

void draw(){
  mapHolder = new PImage[xSpan + 1][ySpan + 1];
  getMaps();
  showTextBox();
}

PImage getMapImage(int xPos, int yPos, int zoom, String type){ 
  mapImagePath = "map/" + type + "_x=" + xPos + "y=" + yPos + "zoom=" + zoom + ".png";
  return loadImage(mapImagePath);
}

void getMaps(){  
  for (int x = 0; x <= xSpan; x++){
    for (int y = 0; y <= ySpan; y++){
      mapHolder[x][y] = getMapImage (xPos + x, yPos + y, 17, mapType);
      try {
        image(mapHolder[x][y], x*256, y*256); 
      } catch (Exception e) {
        image(loadImage("map/unavailable.png"), x*256, y*256); 
      }
    }
  }
}

void showTextBox(){
  fill(0);
  text("xPos: " + xPos, textBoxOneX, 60);
  text("yPos: " + yPos, textBoxOneX, 90);
}

void moveMap(int step, int direction){
  if (direction == 1 && xPos - step >= xPosMin){
    xPos -= step;
  }
  if (direction == 2 && yPos - step >= yPosMin){
    yPos -= step;
  }
  if (direction == 3 && yPos + step + ySpan <= yPosMax){
    yPos += step;
  }
  if (direction == 4 && xPos + step + xSpan <= xPosMax){
    xPos += step;
  }
  redraw();
}