/************************************************************************
*                                                                       *
*             Star Traders: A Game of Interstellar Trading              *
*                Copyright (C) 1990-2011, John Zaitseff                 *
*                                                                       *
************************************************************************/

/*
  Author: John Zaitseff <J.Zaitseff@zap.org.au>
  $Id$

  This file, move.h, contains declarations for functions that make and
  process a game move in Star Traders.


  This program is free software: you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the
  Free Software Foundation, either version 3 of the License, or (at your
  option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see http://www.gnu.org/licenses/.
*/


#ifndef included_MOVE_H
#define included_MOVE_H 1


/************************************************************************
*                     Game move function prototypes                     *
************************************************************************/

/*
  Function:   select_moves - Select NUMBER_MOVES random moves
  Parameters: (none)
  Returns:    (nothing)

  This function selects NUMBER_MOVES random moves and stores them in the
  game_move[] array.  If there are less than NUMBER_MOVES empty spaces in
  the galaxy map, the game is automatically finished by setting
  quit_selected to true.
*/
extern void select_moves (void);


/*
  Function:   get_move    - Wait for the player to enter their move
  Parameters: (none)
  Returns:    selection_t - Choice selected by player

  This function displays the galaxy map and the current moves, then waits
  for the player to select one of the moves.  On entry, current_player
  contains the current player number; quit_selected and/or abort_game may
  be true (if so, get_move() justs returns SEL_QUIT without waiting for
  the player to select a move).  The return value is the choice made by
  the player.

  Note that two windows (the "Select move" window and the galaxy map
  window) are left on the screen: they are closed in process_move().
*/
extern selection_t get_move (void);


/*
  Function:   process_move - Process the move selected by the player
  Parameters: selection    - Selection made by current player
  Returns:    (nothing)

  This function processes the move in selection.  It assumes the "Select
  move" and galaxy map windows are still open.


*/
extern void process_move (selection_t selection);


/*
  Function:   next_player - Get the next player
  Parameters: (none)
  Returns:    (nothing)

  This function sets the global variable current_player to the next
  eligible player.  If no player is still in the game, quit_selected is
  set to true.  The variable turn_number is also incremented if required.
*/
extern void next_player (void);


#endif /* included_MOVE_H */