apps/plugins/dice.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Brandon Low
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include "plugin.h"
  23 #include "lib/pluginlib_actions.h"
  24 #include "lib/configfile.h"
  25
  26 #define MAX_DICES 12
  27 #define INITIAL_NB_DICES 1
  28 #define INITIAL_NB_SIDES 2 /* corresponds to 6 sides in the array */
  29
  30 #define DICE_QUIT PLA_QUIT
  31 #define DICE_ROLL PLA_START
  32
  33
  34 #define CFG_FILE "dice.cfg"
  35
  36 const struct button_mapping* plugin_contexts[]={generic_actions};
  37
  38 struct dices
  39 {
  40     int values[MAX_DICES];
  41     int total;
  42     int nb_dices;
  43     int nb_sides;
  44 };
  45
  46 #define PRINT_BUFFER_LENGTH MAX_DICES*4
  47 PLUGIN_HEADER
  48
  49 static struct dices dice;
  50 static int sides_index;
  51
  52 static struct opt_items nb_sides_option[8] = {
  53     { "3", -1 },
  54     { "4", -1 },
  55     { "6", -1 },
  56     { "8", -1 },
  57     { "10", -1 },
  58     { "12", -1 },
  59     { "20", -1 },
  60     { "100", -1 }
  61 };
  62 static int nb_sides_values[] = { 3, 4, 6, 8, 10, 12, 20, 100 };
  63 static char *sides_conf[] = {"3", "4", "6", "8", "10", "12", "20", "100" };
  64 static struct configdata config[] =
  65 {
  66     {TYPE_INT, 0, MAX_DICES, { .int_p = &dice.nb_dices}, "dice count", NULL},
  67     {TYPE_ENUM, 0, 8, { .int_p = &sides_index }, "side count", sides_conf}
  68 };
  69
  70 void dice_init(struct dices* dice);
  71 void dice_roll(struct dices* dice);
  72 void dice_print(struct dices* dice, struct screen* display);
  73 bool dice_menu(struct dices* dice);
  74
  75 /* plugin entry point */
  76 enum plugin_status plugin_start(const void* parameter) {
  77     (void)parameter;
  78     int i, action;
  79
  80     dice_init(&dice);
  81     rb->srand(*rb->current_tick);
  82
  83     configfile_load(CFG_FILE, config, 2, 0);
  84     dice.nb_sides = nb_sides_values[sides_index];
  85     if(!dice_menu(&dice))
  86     {
  87         configfile_save(CFG_FILE, config, 2, 0);
  88         return PLUGIN_OK;
  89     }
  90     configfile_save(CFG_FILE, config, 2, 0);
  91     dice_roll(&dice);
  92     FOR_NB_SCREENS(i)
  93         dice_print( &dice, rb->screens[i] );
  94     while(true) {
  95         action = pluginlib_getaction(TIMEOUT_BLOCK,
  96                                      plugin_contexts, 1);
  97         switch(action) {
  98             case DICE_ROLL:
  99                 dice_roll(&dice);
 100                 FOR_NB_SCREENS(i)
 101                     dice_print( &dice, rb->screens[i] );
 102                 break;
 103             case DICE_QUIT:
 104                 return PLUGIN_OK;
 105         }
 106     }
 107 }
 108
 109 void dice_init(struct dices* dice){
 110     dice->nb_dices=INITIAL_NB_DICES;
 111     sides_index=INITIAL_NB_SIDES;
 112
 113 }
 114
 115 void dice_roll(struct dices* dice) {
 116     int i;
 117     dice->total = 0;
 118     for (i=0; i<dice->nb_dices; i++) {
 119         dice->values[i] = rb->rand()%dice->nb_sides + 1;
 120         dice->total+=dice->values[i];
 121     }
 122 }
 123
 124 void dice_print_string_buffer(struct dices* dice, char* buffer,
 125                               int start, int end){
 126     int i, written;
 127     for (i=start; i<end; i++) {
 128         written=rb->snprintf(buffer, PRINT_BUFFER_LENGTH,
 129                              " %3d", dice->values[i]);
 130         buffer=&(buffer[written]);
 131     }
 132 }
 133
 134 void dice_print(struct dices* dice, struct screen* display){
 135     char buffer[PRINT_BUFFER_LENGTH];
 136     /* display characteristics */
 137     int char_height, char_width;
 138     display->getstringsize("M", &char_width, &char_height);
 139     int display_nb_row=display->getheight()/char_height;
 140     int display_nb_col=display->getwidth()/char_width;
 141
 142     int nb_dices_per_line=display_nb_col/4;/* 4 char per dice displayed*/
 143     int nb_lines_required=dice->nb_dices/nb_dices_per_line;
 144     int current_row=0;
 145     if(dice->nb_dices%nb_dices_per_line!=0)
 146         nb_lines_required++;
 147     display->clear_display();
 148     if(display_nb_row<nb_lines_required){
 149         /* Put everything on the same scrolling line */
 150         dice_print_string_buffer(dice, buffer, 0, dice->nb_dices);
 151         display->puts_scroll(0, current_row, buffer);
 152         current_row++;
 153     }else{
 154         int start=0;
 155         int end=0;
 156         for(;current_row<nb_lines_required;current_row++){
 157             end=start+nb_dices_per_line;
 158             if(end>dice->nb_dices)
 159                 end=dice->nb_dices;
 160             dice_print_string_buffer(dice, buffer, start, end);
 161             display->puts(0, current_row, buffer);
 162             start=end;
 163         }
 164     }
 165     rb->snprintf(buffer, PRINT_BUFFER_LENGTH, "Total: %d", dice->total);
 166     display->puts_scroll(0, current_row, buffer);
 167     display->update();
 168 }
 169
 170 bool dice_menu(struct dices * dice) {
 171     int selection;
 172     bool menu_quit = false, result = false;
 173
 174     MENUITEM_STRINGLIST(menu,"Dice Menu",NULL,"Roll Dice","Number of Dice",
 175                         "Number of Sides","Quit");
 176
 177
 178     while (!menu_quit) {
 179         switch(rb->do_menu(&menu, &selection, NULL, false)){
 180             case 0:
 181                 menu_quit = true;
 182                 result = true;
 183                 break;
 184
 185             case 1:
 186                 rb->set_int("Number of Dice", "", UNIT_INT, &(dice->nb_dices),
 187                             NULL, 1, 1, MAX_DICES, NULL );
 188                 break;
 189
 190             case 2:
 191                 rb->set_option("Number of Sides", &sides_index, INT,
 192                                nb_sides_option,
 193                                sizeof(nb_sides_values)/sizeof(int), NULL);
 194                 dice->nb_sides=nb_sides_values[sides_index];
 195                 break;
 196
 197             default:
 198                 menu_quit = true;
 199                 result = false;
 200                 break;
 201          }
 202     }
 203     return result;
 204 }