int [] data = new int[361];
int selected = 1;

PFont font;
PImage a;
PImage b;
PImage c;
PImage d;
PImage e;
PImage f;
PImage g;
PImage h;
PImage i;
PImage j;

void setup(){
 size(650,650);
 font = loadFont("Aparajita-20.vlw");
 a = loadImage("Erase.png");
 b = loadImage("Wall.png");
 c = loadImage("Door.png");
 d = loadImage("Pacman.png");
 e = loadImage("Blinky.png");
 f = loadImage("Clyde.png");
 g = loadImage("Inky.png");
 h = loadImage("Pinky.png");
 i = loadImage("Big-Fruit.png");
 j = loadImage("Small-Fruit.png");
}

void draw(){
 background(255);
 textFont(font, 20);
 // Draw the tiles.
 for(int i=0; i < 19; i++){
 for(int j=0; j < 19; j++){
    drawTile(i,j);
   }
 }
 
 // Draw the buttons.
 stroke(0);
 
 fill (255);
 if (selected == 1) {
   fill (100, 255, 100);
 }
 rect (20, 610, 32, 32);
 image (a, 20, 610);
 
 if (selected == 2) {
 fill (100, 255, 100);
 }
 rect (52, 610, 32, 32);
 image (b, 52, 610);
 
 if (selected == 3) {
 fill (100, 255, 100);
 }
 rect(84, 610, 32, 32 );
 image (c, 84, 610);
 
 if (selected == 4) {
 fill (100, 255, 100);
 }
 rect(116, 610, 32, 32 );
 image (d, 116, 610);
 
 if (selected == 5) {
 fill (100, 255, 100);
 }
 rect(148, 610, 32, 32 );
 image (e, 148, 610);
 
 if (selected == 6) {
 fill (100, 255, 100);
 }
 rect(180, 610, 32, 32 );
 image (f, 180, 610);
 
 if (selected == 7) {
 fill (100, 255, 100);
 }
 rect(212, 610, 32, 32 );
 image (g, 212, 610);
 
 if (selected == 8) {
 fill (100, 255, 100);
 }
 rect(244, 610, 32, 32 );
 image (h, 244, 610);
 
 if (selected == 9) {
 fill (100, 255, 100);
 }
 rect(276, 610, 32, 32 );
 image (i, 276, 610);
 
 if (selected == 10) {
 fill (100, 255, 100);
 }
 rect(308, 610, 32, 32 );
 image (j, 308, 610);
 
// Update tiles.
 if(mousePressed){
   if( mouseX > 30 && mouseX < 270 && mouseY > 30 && mouseY < 270 ){
     int tempi = (mouseX-30)/80;
     int tempj = (mouseY-30)/80;
     data[tempi+3*tempj] = selected;
   }
 }
}
   
 void drawTile(int i, int j){
drawBlank(i,j);
if( data[i+3*j] == 1 ){
  drawCross(i,j);
}
if( data[i+3*j] == 2 ){
  drawCircle(i,j);
}
}


void drawBlank(int i, int j){
stroke(0);
fill(200,255,200);
rect(30+30*i,30+30*j,30,30);
}

void drawCross(int i, int j){
noStroke();
fill(0,0,255);
rect(-10,-30,20,60);
rect(-30,-10,60,20);

}

void drawCircle(int i, int j){
noStroke();
fill(255,0,0);
ellipse(70+80*i,70+80*j, 60, 60 );
fill(200,255,200);
ellipse(70+80*i,70+80*j, 40, 40 );
}