5 #include "keybindings.h"
7 #include "map_objects.h"
8 #include "map_object_actions.h"
11 #include "yx_uint16.h"
13 extern void textfile_sizes (FILE * file, uint16_t * linemax_p, uint16_t * n_lines_p) {
14 // Learn largest line length (linemax_p) and (n_lines_p if not set to NULL) number of lines.
23 if (c_count > linemax)
24 linemax = c_count + 1;
28 fseek(file, 0, SEEK_SET);
29 * linemax_p = linemax;
31 * n_lines_p = n_lines; }
33 extern uint16_t rrand(char use_seed, uint32_t new_seed) {
34 // Pseudo-random number generator (LGC algorithm). Use instead of rand() to ensure portable predictability.
38 seed = ((seed * 1103515245) + 12345) % 2147483648; // Values as recommended by POSIX.1-2001 (see rand(3)).
39 return (seed / 65536); } // Ignore least significant 16 bits (they are less random).
41 extern void update_log (struct World * world, char * text) {
42 // Update log by appending text, or by appending a "." if text is the same as the last one.
43 static char * last_msg;
45 last_msg = calloc(1, sizeof(char));
47 uint16_t len_old = strlen(world->log);
48 if (0 == strcmp(last_msg, text)) {
49 uint16_t len_whole = len_old + 1;
50 new_text = calloc(len_whole + 1, sizeof(char));
51 memcpy(new_text, world->log, len_old);
52 memcpy(new_text + len_old, ".", 1); }
54 uint16_t len_new = strlen(text);
55 uint16_t len_whole = len_old + len_new + 1;
56 new_text = calloc(len_whole, sizeof(char));
57 memcpy(new_text, world->log, len_old);
58 memcpy(new_text + len_old, text, len_new);
59 last_msg = calloc(len_new + 1, sizeof(char));
60 memcpy(last_msg, text, len_new); }
62 world->log = new_text; }
64 extern uint16_t center_offset (uint16_t pos, uint16_t mapsize, uint16_t framesize) {
65 // Return the offset for display of a map inside a frame centered on pos.
67 if (mapsize > framesize) {
68 if (pos > framesize / 2) {
69 if (pos < mapsize - (framesize / 2))
70 offset = pos - (framesize / 2);
72 offset = mapsize - framesize; } }
75 extern void turn_over (struct World * world, char action) {
76 // Record action in game record file, increment turn and move enemy.
77 if (1 == world->interactive) {
78 FILE * file = fopen("record", "a");
82 rrand(1, world->seed * world->turn);
83 struct Monster * monster;
84 for (monster = world->monster; monster != 0; monster = monster->map_obj.next)
85 move_monster(world, monster); }
87 extern void save_game(struct World * world) {
88 // Save game data to game file.
89 FILE * file = fopen("savefile", "w");
90 write_uint32_bigendian(world->seed, file);
91 write_uint32_bigendian(world->turn, file);
92 write_uint16_bigendian(world->player->pos.y + 1, file);
93 write_uint16_bigendian(world->player->pos.x + 1, file);
94 fputc(world->player->hitpoints, file);
95 write_map_objects (world->monster, file, write_map_objects_monsterdata);
96 write_map_objects (world->item, file, NULL);
99 extern void toggle_window (struct WinMeta * win_meta, struct Win * win) {
100 // Toggle display of window win.
101 if (0 != win->frame.curses_win)
102 suspend_win(win_meta, win);
104 append_win(win_meta, win); }
106 extern void scroll_pad (struct WinMeta * win_meta, char dir) {
107 // Try to scroll pad left or right.
109 reset_pad_offset(win_meta, win_meta->pad_offset + 1);
111 reset_pad_offset(win_meta, win_meta->pad_offset - 1); }
113 extern void growshrink_active_window (struct WinMeta * win_meta, char change) {
114 // Grow or shrink active window horizontally or vertically by one cell size.
115 if (0 != win_meta->active) {
116 struct yx_uint16 size = win_meta->active->frame.size;
117 if (change == '-') size.y--;
118 else if (change == '+') size.y++;
119 else if (change == '_') size.x--;
120 else if (change == '*') size.x++;
121 resize_active_win (win_meta, size); } }
123 extern struct yx_uint16 find_passable_pos (struct Map * map) {
124 // Return a random passable position on map.
125 struct yx_uint16 pos;
126 for (pos.y = pos.x = 0; 0 == is_passable(map, pos);) {
127 pos.y = rrand(0, 0) % map->size.y;
128 pos.x = rrand(0, 0) % map->size.x; }
131 extern unsigned char meta_keys(int key, struct World * world, struct WinMeta * win_meta,
132 struct Win * win_keys, struct Win * win_map, struct Win * win_info,
133 struct Win * win_log) {
134 // Call some meta program / window management actions dependent on key. Return 1 to signal quitting.
135 if (key == get_action_key(world->keybindings, "quit"))
137 else if (key == get_action_key(world->keybindings, "scroll pad right"))
138 scroll_pad (win_meta, '+');
139 else if (key == get_action_key(world->keybindings, "scroll pad left"))
140 scroll_pad (win_meta, '-');
141 else if (key == get_action_key(world->keybindings, "toggle keys window"))
142 toggle_window(win_meta, win_keys);
143 else if (key == get_action_key(world->keybindings, "toggle map window"))
144 toggle_window(win_meta, win_map);
145 else if (key == get_action_key(world->keybindings, "toggle info window"))
146 toggle_window(win_meta, win_info);
147 else if (key == get_action_key(world->keybindings, "toggle log window"))
148 toggle_window(win_meta, win_log);
149 else if (key == get_action_key(world->keybindings, "cycle forwards"))
150 cycle_active_win(win_meta, 'n');
151 else if (key == get_action_key(world->keybindings, "cycle backwards"))
152 cycle_active_win(win_meta, 'p');
153 else if (key == get_action_key(world->keybindings, "shift forwards"))
154 shift_active_win(win_meta, 'f');
155 else if (key == get_action_key(world->keybindings, "shift backwards"))
156 shift_active_win(win_meta, 'b');
157 else if (key == get_action_key(world->keybindings, "grow horizontally"))
158 growshrink_active_window(win_meta, '*');
159 else if (key == get_action_key(world->keybindings, "shrink horizontally"))
160 growshrink_active_window(win_meta, '_');
161 else if (key == get_action_key(world->keybindings, "grow vertically"))
162 growshrink_active_window(win_meta, '+');
163 else if (key == get_action_key(world->keybindings, "shrink vertically"))
164 growshrink_active_window(win_meta, '-');
165 else if (key == get_action_key(world->keybindings, "save keys"))
166 save_keybindings(world);
167 else if (key == get_action_key(world->keybindings, "keys nav up"))
168 keyswin_move_selection (world, 'u');
169 else if (key == get_action_key(world->keybindings, "keys nav down"))
170 keyswin_move_selection (world, 'd');
171 else if (key == get_action_key(world->keybindings, "keys mod"))
172 keyswin_mod_key (world, win_meta);
173 else if (key == get_action_key(world->keybindings, "map up"))
174 map_scroll (world->map, NORTH, win_map->frame.size);
175 else if (key == get_action_key(world->keybindings, "map down"))
176 map_scroll (world->map, SOUTH, win_map->frame.size);
177 else if (key == get_action_key(world->keybindings, "map right"))
178 map_scroll (world->map, EAST, win_map->frame.size);
179 else if (key == get_action_key(world->keybindings, "map left"))
180 map_scroll (world->map, WEST, win_map->frame.size);
181 else if (key == get_action_key(world->keybindings, "map center player"))
182 map_center_player (world->map, world->player, win_map->frame.size);