//-------------------------------------------//
// This is the script for the tictactoe map. //
//-------------------------------------------//

//The following definitions section defines values for constants that will be used throughout this script.
#ifndef __TICTACTOE_DEFS__
#define __TICTACTOE_DEFS__

#define FALSE             0
#define TRUE              1
#define NULL              0
#define MAGIC_NUMBER     15
#define ONE               1
#define TWO               2
#define THREE             3
#define FOUR              4
#define FIVE              5
#define SIX               6
#define SEVEN             7
#define EIGHT             8
#define NINE              9
#define ZERO              0

#endif

//Predeclaration of needed functions.
float checkSpot(float spot);
void setPlacement(float button);

//Global Variables.
  float a = NULL;
  float x = NULL;
  float b = NULL;
  float y = NULL;
  float c = NULL;
  float z = NULL;
  float d = NULL;
  float w = NULL;
  float e = NULL;

//Functions
void interact()
{
  $interactive.show();
  sys.wait(0.1);
  $noninteractive.hide();
}

void noninteract()
{
  $noninteractive.show();
  sys.wait(0.1);
  $interactive.hide();
}

void moveBot()
{
  aiScriptedTetherMoveWait($aiBot, $tetherPlay);
  $aiBot.lookAt($aiLook);
  interact();
}

void spotTaken()
{
  sys.println("That spot is already occupied, please choose another.");
}

float checkForWin(float num1, float num2, float num3)
{
  //Sets the default state for winner to false.
  float winner = FALSE;

  //Adds up the numbers that have been passed in to determine whether the game has been won or not.
  float total = num1 + num2 + num3;

  //If the sum of the numbers is 15, then we have a winner and winner is set to true.
  if (total == MAGIC_NUMBER)
  {
    winner = TRUE;
  }

  //This returns winner, if it's true, then the game should end.
  return winner;
}

void placeMaiden(float spot)
{
  //Checks to see where the computer finally decided to place the maiden, places maiden there.
  if (spot == ONE)
    sys.trigger($enemySpawn1);
  else if (spot == TWO)
    sys.trigger($enemySpawn2);
  else if (spot == THREE)
    sys.trigger($enemySpawn3);
  else if (spot == FOUR)
    sys.trigger($enemySpawn4);
  else if (spot == FIVE)
    sys.trigger($enemySpawn5);
  else if (spot == SIX)
    sys.trigger($enemySpawn6);
  else if (spot == SEVEN)
    sys.trigger($enemySpawn7);
  else if (spot == EIGHT)
    sys.trigger($enemySpawn8);
  else if (spot == NINE)
    sys.trigger($enemySpawn9);
  else
    sys.println("Error within placeMaiden function: no value found.");
}

void aiChoose()
{
  //Makes a random integer between 1 and 9, assigns it to compChoice
  float compChoice = sys.randomInt(EIGHT) + ONE;

  //Makes a random wait time for the computer between 1 and 2
  float pretendWait = sys.random(ONE) + ONE;

  //Checks to see if compChoice is valid, if it is not valid then it calls the function again
  if (checkSpot(compChoice) == FALSE)
    {
      setPlacement(compChoice);
      sys.wait(pretendWait);
      aiScriptedAnimWait($aiBot, "point_forward", 16, 1);
      placeMaiden(compChoice);
    }
  else
    aiChoose();
}

void gameOver()
{
  sys.wait(THREE);
  sys.trigger($killAll);
}

void playGame()
{
  float playerWin = FALSE;
  float aiWin = FALSE;

  //If a, b, and c have been chosen, check to see if the player has won.
  if (a != NULL && b != NULL && c != NULL)
    {
      if (checkForWin(a, b, c) == TRUE)
        playerWin = TRUE;
    }

  //If a, b, c, and d have been chosen, check to see if the player has won.
  if (a != NULL && b != NULL && c != NULL && d != NULL)
    {
      if (checkForWin(a, b, d) == TRUE)
        playerWin = TRUE;
      else if (checkForWin(a, d, c) == TRUE)
        playerWin = TRUE;
      else if (checkForWin(d, b, c) == TRUE)
        playerWin = TRUE;
    }

  //If a, b, c, d, and e have been chosen, check to see if the player has won.
  if (a != NULL && b != NULL && c != NULL && d != NULL && e != NULL)
    {
      if (checkForWin(a, b, e) == TRUE)
        playerWin = TRUE;
      else if (checkForWin(a, e, c) == TRUE)
        playerWin = TRUE;
      else if (checkForWin(e, b, c) == TRUE)
        playerWin = TRUE;
      else if (checkForWin(a, d, e) == TRUE)
        playerWin = TRUE;
      else if (checkForWin(d, b, e) == TRUE)
        playerWin = TRUE;
      else if (checkForWin(d, c, e) == TRUE)
        playerWin = TRUE;
    }

 if (playerWin == TRUE)
   {
     sys.println("You have won the game!");
     gameOver();
   }
 else
   {
     //If all spots are taken and it gets here, then the cat got the game.
     if (a != NULL && b != NULL && c != NULL && d != NULL && e != NULL && x != NULL && y != NULL && z != NULL && w != NULL)
      {
        sys.println("It looks like the cat got this one!");
        gameOver();
      }
     else
       //Calls function for the computer to choose a spot.
       aiChoose();

     //If x, y, and z have been chosen, check to see if the computer has won.
     if (x != NULL && y != NULL && z != NULL)
       {
         if (checkForWin(x, y, z) == TRUE)
           aiWin = TRUE;
       }

     //If x, y, z, and w have been chosen, check to see if the computer has won.
     if (x != NULL && y != NULL && z != NULL && w != NULL)
       {
         if (checkForWin(x, y, w) == TRUE)
           aiWin = TRUE;
         else if (checkForWin(x, w, z) == TRUE)
           aiWin = TRUE;
         else if (checkForWin(w, y, z) == TRUE)
           aiWin = TRUE;
       }

    if (aiWin == TRUE)
      {
        sys.println("You have been defeated by the Strogg!");
        gameOver();
      }
   }
}


void setPlacement(float button)
{
  //This long if-else statement determines which variable should be set to the button number entered either by the player or the AI.
  if (a == NULL)
  {
    a = button;
  }
  else if (x == NULL)
  {
    x = button;
  }
  else if (b == NULL)
  {
    b = button;
  }
  else if (y == NULL)
  {
    y = button;
  }
  else if (c == NULL)
  {
    c = button;
  }
  else if (z == NULL)
  {
    z = button;
  }
  else if (d == NULL)
  {
    d = button;
  }
  else if (w == NULL)
  {
    w = button;
  }
  else if (e == NULL)
  {
    e = button;
  }
  else
  {
    sys.println("System error in setPlacement().");
  }

  /*
  //debug
  sys.println("A = " + a);
  sys.println("B = " + b);
  sys.println("C = " + c);
  sys.println("D = " + d);
  sys.println("E = " + e);
  sys.println("X = " + x);
  sys.println("Y = " + y);
  sys.println("Z = " + z);
  sys.println("W = " + w);
  */
}

float checkSpot(float spot)
{
    float isFull = FALSE;

    if (a == spot || b == spot || c == spot || d == spot || e == spot || w == spot || x == spot || y == spot || z == spot)
    {
      isFull = TRUE;
    }

    return isFull;
}

//These are the GUI functions...
void buttonOne()
{
  if (checkSpot(ONE) == FALSE)
  {
    noninteract();
    setPlacement(ONE);
    sys.trigger($playerSpawn1);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonTwo()
{
  if (checkSpot(TWO) == FALSE)
  {
    noninteract();
    setPlacement(TWO);
    sys.trigger($playerSpawn2);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonThree()
{
  if (checkSpot(THREE) == FALSE)
  {
    noninteract();
    setPlacement(THREE);
    sys.trigger($playerSpawn3);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonFour()
{
  if (checkSpot(FOUR) == FALSE)
  {
    noninteract();
    setPlacement(FOUR);
    sys.trigger($playerSpawn4);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonFive()
{
  if (checkSpot(FIVE) == FALSE)
  {
    noninteract();
    setPlacement(FIVE);
    sys.trigger($playerSpawn5);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonSix()
{
  if (checkSpot(SIX) == FALSE)
  {
    noninteract();
    setPlacement(SIX);
    sys.trigger($playerSpawn6);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonSeven()
{
  if (checkSpot(SEVEN) == FALSE)
  {
    noninteract();
    setPlacement(SEVEN);
    sys.trigger($playerSpawn7);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonEight()
{
  if (checkSpot(EIGHT) == FALSE)
  {
    noninteract();
    setPlacement(EIGHT);
    sys.trigger($playerSpawn8);
    playGame();
    interact();
  }
  else
    spotTaken();
}

void buttonNine()
{
  if (checkSpot(NINE) == FALSE)
  {
    noninteract();
    setPlacement(NINE);
    sys.trigger($playerSpawn9);
    playGame();
    interact();
  }
  else
    spotTaken();
}
//...this ends the GUI function section

void main()
{
  //Nothing to see here. Move along.
}