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 <stdint.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "SFont.h"
  27
  28 #include "common.h"
  29 #include "config.h"
  30 #include "file.h"
  31 #include "score.h"
  32
  33 // High score table
  34 struct highscore g_scores[N_SCORES] = {
  35         {1*60*1000,"-"},
  36         {45*1000,"-"},
  37         {30*1000,"-"},
  38         {20*1000,"-"},
  39         {10*1000,"-"},
  40         {7*1000,"-"},
  41         {5*1000,"-"},
  42         {3*1000,"-"}
  43 };
  44
  45 extern SFont_Font *g_font;
  46
  47 int cur_score = -1; // which score we're currently entering.
  48
  49 void
  50 read_high_score_table()
  51 {
  52         FILE *f;
  53         int i;
  54
  55         f = open_score_file("r");
  56         if(f) {
  57                 // If the file exists, read from it
  58                 for(i = 0; i<N_SCORES; i++) {
  59                         fscanf(f, "%d %31[^\n]", &g_scores[i].score, g_scores[i].name);
  60                 }
  61                 fclose(f);
  62         }
  63 }
  64
  65 void
  66 write_high_score_table()
  67 {
  68         FILE *f;
  69         int i;
  70
  71         f = open_score_file("w");
  72         if(f) {
  73                 // If the file exists, write to it
  74                 for(i = 0; i<N_SCORES; i++) {
  75                         fprintf (f, "%d %.31s\n", g_scores[i].score, g_scores[i].name);
  76                 }
  77                 fclose(f);
  78         }
  79 }
  80
  81 int
  82 score_rank(int score)
  83 {
  84         int i;
  85
  86         for(i=0; i<N_SCORES; i++) {
  87                 if(score > g_scores[i].score) return i;
  88         }
  89         return -1;
  90 }
  91
  92 int
  93 new_high_score(int score)
  94 {
  95         int i;
  96
  97         cur_score = -1;  // assume not a new high score
  98         if(score <= g_scores[LOW_SCORE].score) return false;
  99         read_high_score_table();
 100         cur_score = score_rank(score);
 101         if(cur_score < 0) return false;
 102
 103         // Move all lower scores down a notch, losing lowest score forever.
 104         for(i=LOW_SCORE; i>cur_score; i--) g_scores[i] = g_scores[i-1];
 105
 106         // initialize new score entry.
 107         g_scores[cur_score].score = score;
 108         for(i=0; i<32; i++) g_scores[cur_score].name[i] = 0;
 109         return true;
 110 }
 111
 112 int
 113 snprintscore(char *s, size_t n, int score)
 114 {
 115         int min = score/60000;
 116         int sec = score/1000%60;
 117         int tenths = score%1000/100;
 118         if(min) {
 119                 return snprintf(s, n, "%2d:%.2d.%d", min, sec, tenths);
 120         } else {
 121                 return snprintf(s, n, "%2d.%d", sec, tenths);
 122         }
 123 }
 124
 125 int
 126 snprintscore_line(char *s, size_t n, int score)
 127 {
 128         int r = snprintf(s, n, "Time: ");
 129         return r + snprintscore(s+r, n-r, score);
 130 }
 131
 132 void
 133 display_scores(SDL_Surface *s, uint32_t x, uint32_t y)
 134 {
 135         char t[1024];
 136         int i,h = SFont_TextHeight(g_font);
 137
 138         SFont_Write(s,g_font,x+30,y,"High scores");
 139         y += h;
 140         for(i = 0; i<N_SCORES; i++) {
 141                 y += h;
 142                 snprintf(t, 1024, "#%1d",i+1);
 143                 SFont_Write(s, g_font, x, y, t);
 144                 snprintscore(t, 1024, g_scores[i].score);
 145                 SFont_Write(s, g_font, x+50, y, t);
 146                 if(i == cur_score) snprintf(t, 1024, "%s_", g_scores[i].name);
 147                 else snprintf(t, 1024, "%s", g_scores[i].name);
 148                 SFont_Write(s, g_font, x+180, y, t);
 149         }
 150 }
 151
 152 int
 153 process_score_input(void)
 154 {
 155         char *name;
 156         int c,k,n;
 157         SDL_Event e;
 158
 159         name = g_scores[cur_score].name;
 160         n = strlen(name);
 161
 162         while(SDL_PollEvent(&e) && e.type == SDL_KEYDOWN) {
 163                 c = e.key.keysym.unicode;
 164                 k = e.key.keysym.sym;
 165                 if(k == SDLK_BACKSPACE) {
 166                         if(n > 0) name[--n]=0;
 167                 } else {
 168                         if(k == SDLK_RETURN) {
 169                                 SDL_EnableUNICODE(0);
 170                                 cur_score = -1;
 171                                 return false;
 172                         } else name[n++] = c;
 173                 }
 174         }
 175         return true;
 176 }