viper.h

   1 #ifndef __VIPER_H__
   2 #define __VIPER_H__
   3
   4 #define SHORTHELP "%s [OPTIONS] [FIELDSIZE]\n"
   5 #define LONGHELP \
   6         "OPTIONS:\n" \
   7         "    -s(peed) N\n" \
   8         "    -l(ength) N\n" \
   9         "    -h(elp)\n" \
  10         "FIELDSIZE:\n" \
  11         "    WxH (width 'x' height)\n" \
  12         "    defaults to 30x20\n" \
  13         "\n" \
  14         "Keybindings:\n" \
  15         "    hjkl: move left/down/up/right\n" \
  16         "    p:    pause / unpause\n" \
  17         "    r:    start a new game\n" \
  18         "    q:    quit\n"
  19
  20 struct snake {
  21         int r; /* row */
  22         int c; /* column */
  23         struct snake* next; /* points to tail */
  24 };
  25 struct item {
  26         int r; /* row */
  27         int c; /* column */
  28         int t; /* type */
  29         int v; /* value */
  30         int s; /* spawn time (for bonus) */
  31         struct item* prev;
  32         struct item* next;
  33 };
  34 enum direction {
  35         NONE,
  36         NORTH,
  37         EAST,
  38         SOUTH,
  39         WEST,
  40 };
  41 enum item_type {
  42         NO_ITEM,
  43         FOOD,
  44         BONUS,
  45 };
  46 enum food_value {
  47         FOOD_PEAR,
  48         FOOD_WMELON,
  49         FOOD_BANANA,
  50         FOOD_KIWI,
  51
  52         FOOD_APPLER,
  53         FOOD_CHERRY,
  54
  55         FOOD_AVOCADO,
  56         NUM_FOODS,
  57 };
  58 enum bonus_value {
  59         BONUS_SNIP,
  60         BONUS_GROW,
  61         BONUS_SLOW,
  62         BONUS_FAST,
  63         BONUS_WRAP,
  64         BONUS_STOP,
  65         NUM_BONI,
  66 };
  67 enum game_state {
  68         GAME_INIT,
  69         GAME_START,
  70         GAME_OVER,
  71         GAME_WON,
  72         GAME_EXIT,
  73 };
  74
  75 int viper(void);
  76 void snake_advance (void);
  77 void spawn_item (int type, int value, struct item* p_item);
  78 void consume_item (struct item* i);
  79 void show_playfield (void);
  80 void draw_sprites (int erase_r, int erase_c);
  81 void pause_game (void);
  82 int end_screen(char* message);
  83 void snake_append (struct snake** s, int row, int col);
  84 void remove_bonus (struct item*  i);
  85 void init_snake();
  86 void quit (void);
  87 int getctrlseq (void);
  88 void append_movement (int d);
  89 void move_ph (int line, int col);
  90 void clamp_fieldsize (void);
  91 void timer_setup (int enable);
  92 void signal_setup (void);
  93 void signal_handler (int signum);
  94 void screen_setup (int enable);
  95 void raw_mode(int enable);
  96 enum event {
  97         /* for getctrlseq() */
  98         CTRSEQ_NULL    =  0,
  99         CTRSEQ_EOF     = -1,
 100         CTRSEQ_INVALID = -2,
 101         CTRSEQ_MOUSE   = -3,
 102         CTRSEQ_CURSOR_LEFT  = -7,
 103         CTRSEQ_CURSOR_DOWN  = -8,
 104         CTRSEQ_CURSOR_UP    = -9,
 105         CTRSEQ_CURSOR_RIGHT = -10,
 106 };
 107
 108 #endif