viiper.h

   1 #ifndef __VIIPER_H__
   2 #define __VIIPER_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         "    -d(ec charset)\n" \
  11         "FIELDSIZE:\n" \
  12         "    WxH (width 'x' height)\n" \
  13         "    defaults to 30x20\n" \
  14         "\n" \
  15         "Keybindings:\n" \
  16         "    hjkl: move left/down/up/right\n" \
  17         "    p:    pause / unpause\n" \
  18         "    r:    start a new game\n" \
  19         "    q:    quit\n"
  20
  21 struct snake {
  22         int r; /* row */
  23         int c; /* column */
  24         struct snake* next; /* points to tail */
  25 };
  26 struct item {
  27         int r; /* row */
  28         int c; /* column */
  29         int t; /* type */
  30         int v; /* value */
  31         int s; /* spawn time (for bonus) */
  32         struct item* prev;
  33         struct item* next;
  34 };
  35 enum direction {
  36         NONE,
  37         NORTH,
  38         EAST,
  39         SOUTH,
  40         WEST,
  41 };
  42 enum item_type {
  43         NO_ITEM,
  44         FOOD,
  45         BONUS,
  46 };
  47 enum food_value {
  48         FOOD_5,
  49         FOOD_10,
  50         FOOD_20,
  51         NUM_FOODS,
  52 };
  53 enum bonus_value {
  54         BONUS_SNIP,
  55         BONUS_GROW,
  56         BONUS_SLOW,
  57         BONUS_FAST,
  58         BONUS_WRAP,
  59         NUM_BONI,
  60 };
  61 enum game_state {
  62         GAME_INIT,
  63         GAME_START,
  64         GAME_OVER,
  65         GAME_WON,
  66         GAME_EXIT,
  67 };
  68
  69 int viiper(void);
  70 void snake_advance (void);
  71 void spawn_item (int type, int value, struct item* p_item);
  72 void consume_item (struct item* i);
  73 void show_playfield (void);
  74 void draw_sprites (int erase_r, int erase_c);
  75 void pause_game (void);
  76 int end_screen(char* message);
  77 void snake_append (struct snake** s, int row, int col);
  78 void remove_bonus (struct item*  i);
  79 void init_snake();
  80 void quit (void);
  81 int getctrlseq (void);
  82 void append_movement (int d);
  83 void move_ph (int line, int col);
  84 void clamp_fieldsize (void);
  85 void timer_setup (int enable);
  86 void signal_setup (void);
  87 void signal_handler (int signum);
  88 void screen_setup (int enable);
  89 void raw_mode(int enable);
  90 enum event {
  91         /* for getctrlseq() */
  92         CTRSEQ_NULL    =  0,
  93         CTRSEQ_EOF     = -1,
  94         CTRSEQ_INVALID = -2,
  95         CTRSEQ_MOUSE   = -3,
  96         CTRSEQ_CURSOR_LEFT  = -7,
  97         CTRSEQ_CURSOR_DOWN  = -8,
  98         CTRSEQ_CURSOR_UP    = -9,
  99         CTRSEQ_CURSOR_RIGHT = -10,
 100 };
 101
 102 #endif