src/score.c

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/* {{{
 * CalcRogue, a roguelike game for PCs, calculators and PDAs
 * Copyright (C) 2003 Jim Babcock
 * 
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 * }}} */
// score.c

#include "crogue.h"
#include "export.h"

static ulong checksum_scores(high_scores *scores);

static const uchar scoreScreenNumTabStops = 3;
#ifdef IS_CALCULATOR
#   define SCORESCREEN_LEFT 2
#   define SCORESCREEN_HEADER_LEFT 40
#   define SCORESCREEN_ARROW_SPACE 18
#   define SCORESCREEN_SCORE_SPACE 45
#else
#   define SCORESCREEN_LEFT 11
#   define SCORESCREEN_HEADER_LEFT 30
#   define SCORESCREEN_ARROW_SPACE 5
#   define SCORESCREEN_SCORE_SPACE 13
#endif

//{{{
void load_options(void)
{
    FILE *scorefile;
    high_scores table;
    
#ifdef REALCOMPUTER
    char full_filename[256];
    snprintf(full_filename, 256, "%s" SCOREFILENAME, file_prefix);
    scorefile = fopen(full_filename, "rb");
#else
    scorefile = fopen(SCOREFILENAME, "rb");
#endif
    if(scorefile)
    {
        fread(&table, sizeof(high_scores), 1, scorefile);
        fread(&w->options, NUM_OPTIONS, 1, scorefile);
        fclose(scorefile);
    }
}
//}}}
//{{{
void display_scores(ulong score)
{
    FILE *scorefile;
    high_scores table;
    int i;
    int score_highlighted = 0;
    char buf[64];
    draw_string_info state = {0, 0};
    
#ifdef REALCOMPUTER
    char full_filename[256];
    snprintf(full_filename, 256, "%s" SCOREFILENAME, file_prefix);
    scorefile = fopen(full_filename, "rb");
#else
    scorefile = fopen(SCOREFILENAME, "rb");
#endif
    if(!scorefile)
        return;
    if(fread(&table, sizeof(high_scores), 1, scorefile)<1)
        return;
    fclose(scorefile);
    
    Graph_ClrScr();
#ifdef IS_CALCULATOR
    SetFont(OPTION_FONT_SMALL);
#endif
    setTabStops(3, 0, SCORESCREEN_ARROW_SPACE, SCORESCREEN_SCORE_SPACE);
    draw_string(gettext("\nHIGH SCORES\n\n"), &state, SCORESCREEN_HEADER_LEFT, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 1);
    for(i=0; i < min(table.num_games, NUM_SCORES); i++)
    {
        if(table.scores[i].points==score && !score_highlighted)
        {
            score_highlighted=1;
            strcpy(buf, "--->");
        } else {
            strcpy(buf, "");
        }
        catprintf(buf, "\t%li\t%s\n", table.scores[i].points, table.scores[i].cause_of_death);

        draw_string(buf, &state, SCORESCREEN_LEFT, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 1);
    }
    for(; i < NUM_SCORES; i++)
        draw_string("\n", &state, SCORESCREEN_LEFT, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 1);
    
    sprintf(buf, gettext("\n%li games played"), table.num_games);
    if(score != -1)
        catprintf(buf, gettext("\nYour score was %li"), score);
    draw_string(buf, &state, SCORESCREEN_LEFT+SCORESCREEN_ARROW_SPACE, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 1);
    
    read_char();
}
//}}}
//{{{
void award_high_score(ulong score, const char *cause_of_death)
{
    FILE *scorefile;
    high_scores table;
    int pos, i;
#ifdef REALCOMPUTER
    char full_filename[256];
#endif
    memset(&table, 0, sizeof(table));
    
    // Read old scores
#ifdef REALCOMPUTER
    snprintf(full_filename, 256, "%s" SCOREFILENAME, file_prefix);
    scorefile = fopen(full_filename, "rb");
#else
    scorefile = fopen(SCOREFILENAME, "rb");
#endif
    if(scorefile)
    {
        fread(&table, sizeof(high_scores), 1, scorefile);
        fclose(scorefile);
        
        if(table.checksum != checksum_scores(&table))
        {
            message(gettext("My scores file has been tampered with...\n"
                    "Did you think I wouldn't notice?"));
            read_char();
            remove(SCOREFILENAME);
            return;
        }
    }
    
    // Add a game
    table.num_games++;
    if(table.num_games==1)
    {
        table.scores[0].points = score;
#       ifdef SHARED_SCORES
            sprintf(table.scores[0].cause_of_death, "%s. %s", getlogin(), cause_of_death);
#       else
            strcpy(table.scores[0].cause_of_death, cause_of_death);
#       endif
    } else {
        for(pos=0; pos<NUM_SCORES; pos++)
        {
            if(table.scores[pos].points <= score)
            {
                for(i=NUM_SCORES-1; i>pos; i--)
                    table.scores[i] = table.scores[i-1];
                table.scores[pos].points = score;
#               ifdef SHARED_SCORES
                    sprintf(table.scores[pos].cause_of_death, "%s. %s", getlogin(), cause_of_death);
#               else
                    strcpy(table.scores[pos].cause_of_death, cause_of_death);
#               endif
                break;
            }
        }
    }
    table.checksum = checksum_scores(&table);
    
#   ifdef IS_CALCULATOR
    EM_moveSymFromExtMem(SYMSTR(SCOREFILENAME), HS_NULL);
#   endif
    
    // Write the scores
#ifdef REALCOMPUTER
    scorefile = fopen(full_filename, "wb");
#else
    scorefile = fopen(SCOREFILENAME, "wb");
#endif
    if(scorefile)
    {
        fwrite(&table, sizeof(high_scores), 1, scorefile);
        fwrite(w->options, NUM_OPTIONS, 1, scorefile);
        fclose(scorefile);
    } else {
        message(gettext("Error writing score file."));
    }
#ifdef IS_CALCULATOR
    if(w->options[OPTION_ARCHIVESCORES] == OPTION_ARCHIVE_YES)
        archive_file(SCOREFILENAME, sizeof(scorefile));
#endif
}
//}}}
//{{{
static ulong checksum_scores(high_scores *scores)
{
    return checksum_bytes(scores, sizeof(*scores) - sizeof(scores->checksum));
}
//}}}

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