mirror of
https://code.videolan.org/videolan/vlc
synced 2024-07-25 09:41:30 +02:00
457 lines
14 KiB
C
457 lines
14 KiB
C
/*****************************************************************************
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* puzzle.c : Puzzle game
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*****************************************************************************
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* Copyright (C) 2005-2009 the VideoLAN team
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* $Id$
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*
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* Authors: Antoine Cellerier <dionoea -at- videolan -dot- org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <math.h>
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_filter.h>
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#include <vlc_rand.h>
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#include "filter_picture.h"
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define ROWS_TEXT N_("Number of puzzle rows")
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#define ROWS_LONGTEXT N_("Number of puzzle rows")
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#define COLS_TEXT N_("Number of puzzle columns")
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#define COLS_LONGTEXT N_("Number of puzzle columns")
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#define BLACKSLOT_TEXT N_("Make one tile a black slot")
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#define BLACKSLOT_LONGTEXT N_("Make one slot black. Other tiles can only be swapped with the black slot.")
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#define CFG_PREFIX "puzzle-"
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static int Open ( vlc_object_t * );
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static void Close( vlc_object_t * );
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vlc_module_begin()
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set_description( N_("Puzzle interactive game video filter") )
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set_shortname( N_( "Puzzle" ))
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set_capability( "video filter2", 0 )
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set_category( CAT_VIDEO )
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set_subcategory( SUBCAT_VIDEO_VFILTER )
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add_integer_with_range( CFG_PREFIX "rows", 4, 2, 16,
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ROWS_TEXT, ROWS_LONGTEXT, false )
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add_integer_with_range( CFG_PREFIX "cols", 4, 2, 16,
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COLS_TEXT, COLS_LONGTEXT, false )
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add_bool( CFG_PREFIX "black-slot", false,
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BLACKSLOT_TEXT, BLACKSLOT_LONGTEXT, false )
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set_callbacks( Open, Close )
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vlc_module_end()
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static const char *const ppsz_filter_options[] = {
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"rows", "cols", "black-slot", NULL
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};
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static picture_t *Filter( filter_t *, picture_t * );
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static int Mouse( filter_t *, vlc_mouse_t *, const vlc_mouse_t *, const vlc_mouse_t * );
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static bool IsFinished( filter_sys_t * );
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static void Shuffle( filter_sys_t * );
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static int PuzzleCallback( vlc_object_t *, char const *,
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vlc_value_t, vlc_value_t, void * );
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struct filter_sys_t
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{
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/* */
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int i_cols;
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int i_rows;
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bool b_blackslot;
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int *pi_order;
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int i_selected;
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bool b_finished;
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/* */
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vlc_mutex_t lock;
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bool b_change;
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struct
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{
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int i_cols;
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int i_rows;
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bool b_blackslot;
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} change;
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};
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#define SHUFFLE_WIDTH 81
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#define SHUFFLE_HEIGHT 13
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static const char *shuffle_button[] =
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{
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".................................................................................",
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".............. ............................ ........ ...... ...............",
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".............. ........................... ......... ........ ...............",
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".............. ........................... ......... ........ ...............",
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".. ....... . ....... .... ...... ...... ...... ........ ...",
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". .... ...... ... ...... .... ....... ......... ........ ....... .. ..",
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". ........... .... ...... .... ....... ......... ........ ...... .... .",
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". ....... .... ...... .... ....... ......... ........ ...... .",
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".. ...... .... ...... .... ....... ......... ........ ...... .......",
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"...... ...... .... ...... .... ....... ......... ........ ...... .......",
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". .... ...... .... ...... ... ....... ......... ........ ....... .... .",
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".. ....... .... ....... . ....... ......... ........ ........ ..",
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"................................................................................."
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};
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/**
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* Open the filter
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*/
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static int Open( vlc_object_t *p_this )
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{
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filter_t *p_filter = (filter_t *)p_this;
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filter_sys_t *p_sys;
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/* */
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if( !es_format_IsSimilar( &p_filter->fmt_in, &p_filter->fmt_out ) )
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{
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msg_Err( p_filter, "Input and output format does not match" );
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return VLC_EGENERIC;
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}
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/* Allocate structure */
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p_filter->p_sys = p_sys = malloc( sizeof( *p_sys ) );
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if( !p_sys )
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return VLC_ENOMEM;
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config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
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p_filter->p_cfg );
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p_sys->pi_order = NULL;
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vlc_mutex_init( &p_sys->lock );
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p_sys->change.i_rows =
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var_CreateGetIntegerCommand( p_filter, CFG_PREFIX "rows" );
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p_sys->change.i_cols =
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var_CreateGetIntegerCommand( p_filter, CFG_PREFIX "cols" );
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p_sys->change.b_blackslot =
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var_CreateGetBoolCommand( p_filter, CFG_PREFIX "black-slot" );
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p_sys->b_change = true;
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var_AddCallback( p_filter, CFG_PREFIX "rows", PuzzleCallback, p_sys );
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var_AddCallback( p_filter, CFG_PREFIX "cols", PuzzleCallback, p_sys );
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var_AddCallback( p_filter, CFG_PREFIX "black-slot", PuzzleCallback, p_sys );
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p_filter->pf_video_filter = Filter;
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p_filter->pf_video_mouse = Mouse;
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return VLC_SUCCESS;
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}
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/**
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* Close the filter
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*/
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static void Close( vlc_object_t *p_this )
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{
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filter_t *p_filter = (filter_t *)p_this;
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filter_sys_t *p_sys = p_filter->p_sys;
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var_DelCallback( p_filter, CFG_PREFIX "rows", PuzzleCallback, p_sys );
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var_DelCallback( p_filter, CFG_PREFIX "cols", PuzzleCallback, p_sys );
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var_DelCallback( p_filter, CFG_PREFIX "black-slot", PuzzleCallback, p_sys );
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vlc_mutex_destroy( &p_sys->lock );
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free( p_sys->pi_order );
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free( p_sys );
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}
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/**
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* Filter a picture
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*/
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static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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picture_t *p_outpic = filter_NewPicture( p_filter );
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if( !p_outpic )
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{
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picture_Release( p_pic );
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return NULL;
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}
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/* */
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vlc_mutex_lock( &p_sys->lock );
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if( p_sys->b_change )
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{
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p_sys->i_rows = p_sys->change.i_rows;
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p_sys->i_cols = p_sys->change.i_cols;
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p_sys->b_blackslot = p_sys->change.b_blackslot;
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p_sys->b_change = false;
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Shuffle( p_sys );
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}
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vlc_mutex_unlock( &p_sys->lock );
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/* */
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const int i_rows = p_sys->i_rows;
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const int i_cols = p_sys->i_cols;
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/* Draw each piece of the puzzle at the right place */
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for( int i_plane = 0; i_plane < p_outpic->i_planes; i_plane++ )
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{
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const plane_t *p_in = &p_pic->p[i_plane];
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plane_t *p_out = &p_outpic->p[i_plane];
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for( int i = 0; i < i_cols * i_rows; i++ )
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{
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int i_piece_height = p_out->i_visible_lines / i_rows;
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int i_piece_width = p_out->i_visible_pitch / i_cols;
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int i_col = (i % i_cols) * i_piece_width;
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int i_row = (i / i_cols) * i_piece_height;
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int i_last_row = i_row + i_piece_height;
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int i_ocol = (p_sys->pi_order[i] % i_cols) * i_piece_width;
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int i_orow = (p_sys->pi_order[i] / i_cols) * i_piece_height;
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if( p_sys->b_blackslot && !p_sys->b_finished && i == p_sys->i_selected )
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{
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uint8_t color = ( i_plane == Y_PLANE ? 0x0 : 0x80 );
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for( int r = i_row; r < i_last_row; r++ )
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{
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memset( p_out->p_pixels + r * p_out->i_pitch + i_col,
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color, i_piece_width );
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}
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}
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else
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{
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for( int r = i_row, or = i_orow; r < i_last_row; r++, or++ )
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{
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memcpy( p_out->p_pixels + r * p_out->i_pitch + i_col,
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p_in->p_pixels + or * p_in->i_pitch + i_ocol,
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i_piece_width );
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}
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}
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/* Draw the borders of the selected slot */
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if( i_plane == 0 && !p_sys->b_blackslot && p_sys->i_selected == i )
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{
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memset( p_out->p_pixels + i_row * p_out->i_pitch + i_col,
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0xff, i_piece_width );
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for( int r = i_row; r < i_last_row; r++ )
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{
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p_out->p_pixels[r * p_out->i_pitch + i_col + 0 + 0 ] = 0xff;
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p_out->p_pixels[r * p_out->i_pitch + i_col + i_piece_width - 1 ] = 0xff;
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}
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memset( p_out->p_pixels + (i_last_row - 1) * p_out->i_pitch + i_col,
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0xff, i_piece_width );
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}
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}
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}
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/* Draw the 'Shuffle' button if the puzzle is finished */
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if( p_sys->b_finished )
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{
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plane_t *p_out = &p_outpic->p[Y_PLANE];
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for( int i = 0; i < SHUFFLE_HEIGHT; i++ )
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{
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for( int j = 0; j < SHUFFLE_WIDTH; j++ )
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{
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if( shuffle_button[i][j] == '.' )
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p_out->p_pixels[ i * p_out->i_pitch + j ] = 0xff;
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}
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}
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}
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return CopyInfoAndRelease( p_outpic, p_pic );
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}
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static int Mouse( filter_t *p_filter, vlc_mouse_t *p_mouse,
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const vlc_mouse_t *p_old, const vlc_mouse_t *p_new )
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{
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filter_sys_t *p_sys = p_filter->p_sys;
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const video_format_t *p_fmt = &p_filter->fmt_in.video;
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/* Only take events inside the puzzle erea */
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if( p_new->i_x < 0 || p_new->i_x >= (int)p_fmt->i_width ||
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p_new->i_y < 0 || p_new->i_y >= (int)p_fmt->i_height )
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return VLC_EGENERIC;
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/* */
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const bool b_clicked = vlc_mouse_HasPressed( p_old, p_new, MOUSE_BUTTON_LEFT );
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/* If the puzzle is finished, shuffle it if needed */
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if( p_sys->b_finished )
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{
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if( b_clicked &&
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p_new->i_x < SHUFFLE_WIDTH && p_new->i_y < SHUFFLE_HEIGHT )
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{
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p_sys->b_change = true;
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return VLC_EGENERIC;
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}
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else
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{
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/* This is the only case where we can forward the mouse */
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*p_mouse = *p_new;
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return VLC_SUCCESS;
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}
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}
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if( !b_clicked )
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return VLC_EGENERIC;
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/* */
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const int i_pos_x = p_new->i_x * p_sys->i_cols / p_fmt->i_width;
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const int i_pos_y = p_new->i_y * p_sys->i_rows / p_fmt->i_height;
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const int i_pos = i_pos_y * p_sys->i_cols + i_pos_x;
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if( p_sys->i_selected == -1 )
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{
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p_sys->i_selected = i_pos;
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}
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else if( p_sys->i_selected == i_pos && !p_sys->b_blackslot )
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{
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p_sys->i_selected = -1;
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}
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else if( ( p_sys->i_selected == i_pos + 1 && p_sys->i_selected%p_sys->i_cols != 0 )
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|| ( p_sys->i_selected == i_pos - 1 && i_pos % p_sys->i_cols != 0 )
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|| p_sys->i_selected == i_pos + p_sys->i_cols
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|| p_sys->i_selected == i_pos - p_sys->i_cols )
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{
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/* Swap two pieces */
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int a = p_sys->pi_order[ p_sys->i_selected ];
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p_sys->pi_order[ p_sys->i_selected ] = p_sys->pi_order[ i_pos ];
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p_sys->pi_order[ i_pos ] = a;
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p_sys->i_selected = p_sys->b_blackslot ? i_pos : -1;
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p_sys->b_finished = IsFinished( p_sys );
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}
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return VLC_EGENERIC;
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}
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/*****************************************************************************
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* Misc stuff...
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*****************************************************************************/
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static int PuzzleCallback( vlc_object_t *p_this, char const *psz_var,
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vlc_value_t oldval, vlc_value_t newval,
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void *p_data )
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{
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VLC_UNUSED(p_this); VLC_UNUSED(oldval);
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filter_sys_t *p_sys = (filter_sys_t *)p_data;
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vlc_mutex_lock( &p_sys->lock );
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if( !strcmp( psz_var, CFG_PREFIX "rows" ) )
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{
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p_sys->change.i_rows = __MAX( 1, newval.i_int );
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}
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else if( !strcmp( psz_var, CFG_PREFIX "cols" ) )
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{
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p_sys->change.i_cols = __MAX( 1, newval.i_int );
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}
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else if( !strcmp( psz_var, CFG_PREFIX "black-slot" ) )
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{
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p_sys->change.b_blackslot = newval.b_bool;
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}
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p_sys->b_change = true;
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vlc_mutex_unlock( &p_sys->lock );
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return VLC_SUCCESS;
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}
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static bool IsFinished( filter_sys_t *p_sys )
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{
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for( int i = 0; i < p_sys->i_cols * p_sys->i_rows; i++ )
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{
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if( i != p_sys->pi_order[i] )
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return false;
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}
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return true;
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}
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static bool IsValid( filter_sys_t *p_sys )
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{
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const int i_count = p_sys->i_cols * p_sys->i_rows;
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if( !p_sys->b_blackslot )
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return true;
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int d = 0;
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for( int i = 0; i < i_count; i++ )
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{
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if( p_sys->pi_order[i] == i_count - 1 )
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{
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d += i / p_sys->i_cols + 1;
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continue;
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}
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for( int j = i+1; j < i_count; j++ )
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{
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if( p_sys->pi_order[j] == i_count - 1 )
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continue;
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if( p_sys->pi_order[i] > p_sys->pi_order[j] )
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d++;
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}
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}
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return (d%2) == 0;
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}
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static void Shuffle( filter_sys_t *p_sys )
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{
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const unsigned i_count = p_sys->i_cols * p_sys->i_rows;
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free( p_sys->pi_order );
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p_sys->pi_order = calloc( i_count, sizeof(*p_sys->pi_order) );
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do
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{
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for( unsigned i = 0; i < i_count; i++ )
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p_sys->pi_order[i] = -1;
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for( unsigned c = 0; c < i_count; )
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{
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unsigned i = ((unsigned)vlc_mrand48()) % i_count;
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if( p_sys->pi_order[i] == -1 )
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p_sys->pi_order[i] = c++;
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}
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p_sys->b_finished = IsFinished( p_sys );
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} while( p_sys->b_finished || !IsValid( p_sys ) );
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if( p_sys->b_blackslot )
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{
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for( unsigned i = 0; i < i_count; i++ )
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{
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if( p_sys->pi_order[i] == (int)i_count - 1 )
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{
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p_sys->i_selected = i;
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break;
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}
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}
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}
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else
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{
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p_sys->i_selected = -1;
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}
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}
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