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 "config.h"
  20
  21 #include "SFont.h"
  22 #include "file.h"
  23 #include "score.h"
  24
  25 #include <SDL.h>
  26 #include <SDL_keysym.h>
  27 #include <stdint.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.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; // 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                         g_scores[i].score = 0;
  59                         g_scores[i].name[0] = 0;
  60                         fscanf(f, "%d %31[^\n]", &g_scores[i].score, g_scores[i].name);
  61                 }
  62                 fclose(f);
  63         }
  64 }
  65
  66 void
  67 write_high_score_table()
  68 {
  69         FILE *f;
  70         int i;
  71
  72         f = open_score_file("w");
  73         if(f) {
  74                 // If the file exists, write to it
  75                 for(i = 0; i<N_SCORES; i++) {
  76                         fprintf (f, "%d %.31s\n", g_scores[i].score, g_scores[i].name);
  77                 }
  78                 fclose(f);
  79         }
  80 }
  81
  82 int
  83 score_rank(int score)
  84 {
  85         int i;
  86
  87         for(i=0; i<N_SCORES; i++) {
  88                 if(score > g_scores[i].score) return i;
  89         }
  90         return -1;
  91 }
  92
  93 int
  94 new_high_score(int score)
  95 {
  96         int i;
  97
  98         cur_score = -1;  // assume not a new high score
  99         if(score <= g_scores[LOW_SCORE].score) return false;
 100         read_high_score_table();
 101         cur_score = score_rank(score);
 102         if(cur_score < 0) return false;
 103
 104         // Move all lower scores down a notch, losing lowest score forever.
 105         for(i=LOW_SCORE; i>cur_score; i--) g_scores[i] = g_scores[i-1];
 106
 107         // initialize new score entry.
 108         g_scores[cur_score].score = score;
 109         for(i=0; i<32; i++) g_scores[cur_score].name[i] = 0;
 110         return true;
 111 }
 112
 113 int
 114 snprintscore(char *s, size_t n, int score)
 115 {
 116         int min = score/60000;
 117         int sec = score/1000%60;
 118         int tenths = score%1000/100;
 119         if(min) {
 120                 return snprintf(s, n, "%2d:%.2d.%d", min, sec, tenths);
 121         } else {
 122                 return snprintf(s, n, "%2d.%d", sec, tenths);
 123         }
 124 }
 125
 126 int
 127 snprintscore_line(char *s, size_t n, int score)
 128 {
 129         int r = snprintf(s, n, "Time: ");
 130         return r + snprintscore(s+r, n-r, score);
 131 }
 132
 133 void
 134 display_scores(SDL_Surface *s, uint32_t x, uint32_t y)
 135 {
 136         char t[1024];
 137         int i,h = SFont_TextHeight(g_font);
 138
 139         SFont_Write(s,g_font,x+30,y,"High scores");
 140         y += h;
 141         for(i = 0; i<N_SCORES; i++) {
 142                 y += h;
 143                 snprintf(t, 1024, "#%1d",i+1);
 144                 SFont_Write(s, g_font, x, y, t);
 145                 snprintscore(t, 1024, g_scores[i].score);
 146                 SFont_Write(s, g_font, x+50, y, t);
 147                 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 && n > 0) name[n--]=0;
 166                 else if(e.key.keysym.sym == SDLK_RETURN) {
 167                         SDL_EnableUNICODE(0);
 168                         return false;
 169                 }
 170                 else name[n++] = c;
 171         }
 172         return true;
 173 }