Tic-Tac-Toe against arduino

//look the previous post to get the code to use in arduino

import processing.serial.*;

short TOTAL_CELLS = 9;
short FIRST_CELL  = 25;
short CELL_LEN    = 50;
short CELL_SPACE  = 10;

short FIRST_TEXT_X = 35;
short FIRST_TEXT_Y = 70;
short TEXT_LEN     = 60;

short RED  = 1;
short BLUE = 2;

int bPos[][] = {
    {
        FIRST_CELL,
        FIRST_CELL
    },
    {
        FIRST_CELL + CELL_LEN + CELL_SPACE,
        FIRST_CELL
    },
    {
        FIRST_CELL + CELL_LEN*2 + CELL_SPACE*2,
        FIRST_CELL
    },
    {
        FIRST_CELL,
        FIRST_CELL + CELL_LEN + CELL_SPACE
    },
    {
        FIRST_CELL + CELL_LEN + CELL_SPACE,
        FIRST_CELL + CELL_LEN + CELL_SPACE
    },
    {
        FIRST_CELL + CELL_LEN*2 + CELL_SPACE*2,
        FIRST_CELL + CELL_LEN + CELL_SPACE
    },
    {
        FIRST_CELL,
        FIRST_CELL + CELL_LEN*2 + CELL_SPACE*2
    },
    {
        FIRST_CELL + CELL_LEN + CELL_SPACE,
        FIRST_CELL + CELL_LEN*2 + CELL_SPACE*2
    },
    {
        FIRST_CELL + CELL_LEN*2 + CELL_SPACE*2,
        FIRST_CELL + CELL_LEN*2 + CELL_SPACE*2
    }
};
int tPos[][] = {
    {
        FIRST_TEXT_X,
        FIRST_TEXT_Y,
        0
    },
    {
        FIRST_TEXT_X + TEXT_LEN,
        FIRST_TEXT_Y,
        0
    },
    {
        FIRST_TEXT_X + TEXT_LEN*2,
        FIRST_TEXT_Y,
        0
    },
    {
        FIRST_TEXT_X,
        FIRST_TEXT_Y + TEXT_LEN,
        0
    },
    {
        FIRST_TEXT_X + TEXT_LEN,
        FIRST_TEXT_Y + TEXT_LEN,
        0
    },
    {
        FIRST_TEXT_X + TEXT_LEN*2,
        FIRST_TEXT_Y + TEXT_LEN,
        0
    },
    {
        FIRST_TEXT_X,
        FIRST_TEXT_Y + TEXT_LEN*2,
        0
    },
    {
        FIRST_TEXT_X + TEXT_LEN,
        FIRST_TEXT_Y + TEXT_LEN*2,
        0
    },
    {
        FIRST_TEXT_X + TEXT_LEN*2,
        FIRST_TEXT_Y + TEXT_LEN*2,
        0
    }
};
Serial myPort;

void setup()
{
    size(220, 220);
    short x;
    short portIndex = 0;
    String portName = Serial.list()[portIndex];

    printArray(Serial.list());
    println("Connecting to -> " + Serial.list()[portIndex]);
    myPort = new Serial(this, portName, 9600);

    for(x = 0; x < TOTAL_CELLS; x++)
    {
        rect(bPos[x][0], bPos[x][1], CELL_LEN, CELL_LEN);
    }
    textSize(50);
}

void draw()
{
    short t;

    while(myPort.available() >= 1)
    {
        int pos = myPort.read();
        //debug
        print(pos + " ");
        //
        tPos[pos][2] = BLUE;
    }

    for(t = 0; t < TOTAL_CELLS; t++)
    {
        if(tPos[t][2] == RED)
        {
            fill(255, 0, 0);
            text("X", tPos[t][0], tPos[t][1]);
        }
        else if(tPos[t][2] == BLUE)
        {
            fill(0, 0, 255);
            text("0", tPos[t][0], tPos[t][1]);
        }
    }
}

void mouseClicked()
{
    int t = verifyCell(mouseX, mouseY);
    if(t != -1)
    {
        tPos[t][2] = RED;
        myPort.write(t);
        println("Clicked!");
        //the computer plays (received on draw)
    }
}

int verifyCell(int x, int y)
{
    int i;

    for(i = 0; i < TOTAL_CELLS; i++)
    {
        if( x >= bPos[i][0] && x <= bPos[i][0]+CELL_LEN &&
            y >= bPos[i][1] && y <= bPos[i][1]+CELL_LEN )
        {
            return i;
        }
    }

    return -1;
}