score.c

   1 /* Variations on RockDodger
   2  * Copyright (C) 2004 Joshua Grams <josh@qualdan.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2 of the License, or (at your
   7  * option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  17  */
  18
  19 #include <SDL.h>
  20 #include <SDL_keysym.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "SFont.h"
  26
  27 #include "common.h"
  28 #include "config.h"
  29 #include "file.h"
  30 #include "score.h"
  31
  32 // High score table
  33 struct highscore g_scores[N_SCORES] = {
  34         {1*60*1000,"-"},
  35         {45*1000,"-"},
  36         {30*1000,"-"},
  37         {20*1000,"-"},
  38         {10*1000,"-"},
  39         {7*1000,"-"},
  40         {5*1000,"-"},
  41         {3*1000,"-"}
  42 };
  43
  44 extern SFont_Font *g_font;
  45
  46 int cur_score = -1; // which score we're currently entering.
  47
  48 void
  49 read_high_score_table()
  50 {
  51         FILE *f;
  52         int i;
  53
  54         f = open_score_file("r");
  55         if(f) {
  56                 // If the file exists, read from it
  57                 for(i = 0; i<N_SCORES; i++) {
  58                         fscanf(f, "%d %31[^\n]", &g_scores[i].score, g_scores[i].name);
  59                 }
  60                 fclose(f);
  61         }
  62 }
  63
  64 void
  65 write_high_score_table()
  66 {
  67         FILE *f;
  68         int i;
  69
  70         f = open_score_file("w");
  71         if(f) {
  72                 // If the file exists, write to it
  73                 for(i = 0; i<N_SCORES; i++) {
  74                         fprintf (f, "%d %.31s\n", g_scores[i].score, g_scores[i].name);
  75                 }
  76                 fclose(f);
  77         }
  78 }
  79
  80 int
  81 score_rank(int score)
  82 {
  83         int i;
  84
  85         for(i=0; i<N_SCORES; i++) {
  86                 if(score > g_scores[i].score) return i;
  87         }
  88         return -1;
  89 }
  90
  91 int
  92 new_high_score(int score)
  93 {
  94         int i;
  95
  96         cur_score = -1;  // assume not a new high score
  97         if(score <= g_scores[LOW_SCORE].score) return false;
  98         read_high_score_table();
  99         cur_score = score_rank(score);
 100         if(cur_score < 0) return false;
 101
 102         // Move all lower scores down a notch, losing lowest score forever.
 103         for(i=LOW_SCORE; i>cur_score; i--) g_scores[i] = g_scores[i-1];
 104
 105         // initialize new score entry.
 106         g_scores[cur_score].score = score;
 107         for(i=0; i<32; i++) g_scores[cur_score].name[i] = 0;
 108         return true;
 109 }
 110
 111 int
 112 snprintscore(char *s, size_t n, int score)
 113 {
 114         int min = score/60000;
 115         int sec = score/1000%60;
 116         int tenths = score%1000/100;
 117         if(min) {
 118                 return snprintf(s, n, "%2d:%.2d.%d", min, sec, tenths);
 119         } else {
 120                 return snprintf(s, n, "%2d.%d", sec, tenths);
 121         }
 122 }
 123
 124 int
 125 snprintscore_line(char *s, size_t n, int score)
 126 {
 127         int r = snprintf(s, n, "Time: ");
 128         return r + snprintscore(s+r, n-r, score);
 129 }
 130
 131 void
 132 display_scores(SDL_Surface *s, uint32_t x, uint32_t y)
 133 {
 134         char t[1024];
 135         int i,h = SFont_TextHeight(g_font);
 136
 137         SFont_Write(s,g_font,x+30,y,"High scores");
 138         y += h;
 139         for(i = 0; i<N_SCORES; i++) {
 140                 y += h;
 141                 snprintf(t, 1024, "#%1d",i+1);
 142                 SFont_Write(s, g_font, x, y, t);
 143                 snprintscore(t, 1024, g_scores[i].score);
 144                 SFont_Write(s, g_font, x+50, y, t);
 145                 if(i == cur_score) snprintf(t, 1024, "%s_", g_scores[i].name);
 146                 else snprintf(t, 1024, "%s", g_scores[i].name);
 147                 SFont_Write(s, g_font, x+180, y, t);
 148         }
 149 }
 150
 151 int
 152 process_score_input(void)
 153 {
 154         char *name;
 155         int c,k,n;
 156         SDL_Event e;
 157
 158         name = g_scores[cur_score].name;
 159         n = strlen(name);
 160
 161         while(SDL_PollEvent(&e) && e.type == SDL_KEYDOWN) {
 162                 c = e.key.keysym.unicode;
 163                 k = e.key.keysym.sym;
 164                 if(k == SDLK_BACKSPACE) {
 165                         if(n > 0) name[--n]=0;
 166                 } else {
 167                         if(k == SDLK_RETURN) {
 168                                 SDL_EnableUNICODE(0);
 169                                 cur_score = -1;
 170                                 return false;
 171                         } else name[n++] = c;
 172                 }
 173         }
 174         return true;
 175 }