10 #include "keybindings.h"
11 #include "readwrite.h"
12 #include "objects_on_map.h"
14 uint16_t rrand(char use_seed, uint32_t new_seed) {
15 // Pseudo-random number generator (LGC algorithm). Use instead of rand() to ensure portable predictability.
19 seed = ((seed * 1103515245) + 12345) % 2147483648; // Values as recommended by POSIX.1-2001 (see rand(3)).
20 return (seed / 65536); } // Ignore least significant 16 bits (they are less random).
22 void update_log (struct World * world, char * text) {
23 // Update log by appending text, or by appending a "." if text is the same as the last one.
24 static char * last_msg;
26 last_msg = calloc(1, sizeof(char));
28 uint16_t len_old = strlen(world->log);
29 if (0 == strcmp(last_msg, text)) {
30 uint16_t len_whole = len_old + 1;
31 new_text = calloc(len_whole + 1, sizeof(char));
32 memcpy(new_text, world->log, len_old);
33 memcpy(new_text + len_old, ".", 1); }
35 uint16_t len_new = strlen(text);
36 uint16_t len_whole = len_old + len_new + 1;
37 new_text = calloc(len_whole, sizeof(char));
38 memcpy(new_text, world->log, len_old);
39 memcpy(new_text + len_old, text, len_new);
40 last_msg = calloc(len_new + 1, sizeof(char));
41 memcpy(last_msg, text, len_new); }
43 world->log = new_text; }
45 struct Map init_map () {
46 // Initialize map with some experimental start values.
52 uint32_t size = map.size.x * map.size.y;
53 map.cells = malloc(size);
55 for (y = 0; y < map.size.y; y++)
56 for (x = 0; x < map.size.x; x++)
57 map.cells[(y * map.size.x) + x] = '~';
58 map.cells[size / 2 + (map.size.x / 2)] = '.';
61 y = rrand(0, 0) % map.size.y;
62 x = rrand(0, 0) % map.size.x;
63 curpos = y * map.size.x + x;
64 if ('~' == map.cells[curpos] &&
65 ( (curpos >= map.size.x && '.' == map.cells[curpos - map.size.x])
66 || (curpos < map.size.x * (map.size.y-1) && '.' == map.cells[curpos + map.size.x])
67 || (curpos > 0 && curpos % map.size.x != 0 && '.' == map.cells[curpos-1])
68 || (curpos < (map.size.x * map.size.y) && (curpos+1) % map.size.x != 0 && '.' == map.cells[curpos+1]))) {
69 if (y == 0 || y == map.size.y - 1 || x == 0 || x == map.size.x - 1)
71 map.cells[y * map.size.x + x] = '.'; } }
74 void map_scroll (struct Map * map, char dir, struct yx_uint16 win_size) {
75 // Scroll map into direction dir if possible by changing the offset.
76 if (NORTH == dir && map->offset.y > 0)
78 else if (WEST == dir && map->offset.x > 0)
80 else if (SOUTH == dir && map->offset.y + win_size.y < map->size.y)
82 else if (EAST == dir && map->offset.x + win_size.x < map->size.x)
85 uint16_t center_offset (uint16_t pos, uint16_t mapsize, uint16_t framesize) {
86 // Return the offset for display of a map inside a frame centered on pos.
88 if (mapsize > framesize) {
89 if (pos > framesize / 2) {
90 if (pos < mapsize - (framesize / 2))
91 offset = pos - (framesize / 2);
93 offset = mapsize - framesize; } }
96 void map_center_player (struct Map * map, struct Player * player, struct yx_uint16 frame_size) {
97 // Center map on player.
98 map->offset.y = center_offset (player->pos.y, map->size.y, frame_size.y);
99 map->offset.x = center_offset (player->pos.x, map->size.x, frame_size.x); }
101 void turn_over (struct World * world, char action) {
102 // Record action in game record file, increment turn and move enemy.
103 if (1 == world->interactive) {
104 FILE * file = fopen("record", "a");
108 rrand(1, world->seed * world->turn);
109 struct Monster * monster;
110 for (monster = world->monster; monster != 0; monster = monster->cmo.next)
111 move_monster(world, monster); }
113 void save_game(struct World * world) {
114 // Save game data to game file.
115 FILE * file = fopen("savefile", "w");
116 write_uint32_bigendian(world->seed, file);
117 write_uint32_bigendian(world->turn, file);
118 write_uint16_bigendian(world->player->pos.y + 1, file);
119 write_uint16_bigendian(world->player->pos.x + 1, file);
120 write_map_objects (world->monster, file, write_map_objects_monsterdata);
121 write_map_objects (world->item, file, readwrite_map_objects_dummy);
124 void toggle_window (struct WinMeta * win_meta, struct Win * win) {
125 // Toggle display of window win.
126 if (0 != win->frame.curses_win)
127 suspend_win(win_meta, win);
129 append_win(win_meta, win); }
131 void scroll_pad (struct WinMeta * win_meta, char dir) {
132 // Try to scroll pad left or right.
134 reset_pad_offset(win_meta, win_meta->pad_offset + 1);
136 reset_pad_offset(win_meta, win_meta->pad_offset - 1); }
138 void growshrink_active_window (struct WinMeta * win_meta, char change) {
139 // Grow or shrink active window horizontally or vertically by one cell size.
140 if (0 != win_meta->active) {
141 struct yx_uint16 size = win_meta->active->frame.size;
142 if (change == '-') size.y--;
143 else if (change == '+') size.y++;
144 else if (change == '_') size.x--;
145 else if (change == '*') size.x++;
146 resize_active_win (win_meta, size); } }
148 unsigned char meta_keys(int key, struct World * world, struct WinMeta * win_meta, struct Win * win_keys,
149 struct Win * win_map, struct Win * win_info, struct Win * win_log) {
150 // Call some meta program / window management actions dependent on key. Return 1 to signal quitting.
151 if (key == get_action_key(world->keybindings, "quit"))
153 else if (key == get_action_key(world->keybindings, "scroll pad right"))
154 scroll_pad (win_meta, '+');
155 else if (key == get_action_key(world->keybindings, "scroll pad left"))
156 scroll_pad (win_meta, '-');
157 else if (key == get_action_key(world->keybindings, "toggle keys window"))
158 toggle_window(win_meta, win_keys);
159 else if (key == get_action_key(world->keybindings, "toggle map window"))
160 toggle_window(win_meta, win_map);
161 else if (key == get_action_key(world->keybindings, "toggle info window"))
162 toggle_window(win_meta, win_info);
163 else if (key == get_action_key(world->keybindings, "toggle log window"))
164 toggle_window(win_meta, win_log);
165 else if (key == get_action_key(world->keybindings, "cycle forwards"))
166 cycle_active_win(win_meta, 'n');
167 else if (key == get_action_key(world->keybindings, "cycle backwards"))
168 cycle_active_win(win_meta, 'p');
169 else if (key == get_action_key(world->keybindings, "shift forwards"))
170 shift_active_win(win_meta, 'f');
171 else if (key == get_action_key(world->keybindings, "shift backwards"))
172 shift_active_win(win_meta, 'b');
173 else if (key == get_action_key(world->keybindings, "grow horizontally"))
174 growshrink_active_window(win_meta, '*');
175 else if (key == get_action_key(world->keybindings, "shrink horizontally"))
176 growshrink_active_window(win_meta, '_');
177 else if (key == get_action_key(world->keybindings, "grow vertically"))
178 growshrink_active_window(win_meta, '+');
179 else if (key == get_action_key(world->keybindings, "shrink vertically"))
180 growshrink_active_window(win_meta, '-');
181 else if (key == get_action_key(world->keybindings, "save keys"))
182 save_keybindings(world);
183 else if (key == get_action_key(world->keybindings, "keys nav up"))
184 keyswin_move_selection (world, 'u');
185 else if (key == get_action_key(world->keybindings, "keys nav down"))
186 keyswin_move_selection (world, 'd');
187 else if (key == get_action_key(world->keybindings, "keys mod"))
188 keyswin_mod_key (world, win_meta);
189 else if (key == get_action_key(world->keybindings, "map up"))
190 map_scroll (world->map, NORTH, win_map->frame.size);
191 else if (key == get_action_key(world->keybindings, "map down"))
192 map_scroll (world->map, SOUTH, win_map->frame.size);
193 else if (key == get_action_key(world->keybindings, "map right"))
194 map_scroll (world->map, EAST, win_map->frame.size);
195 else if (key == get_action_key(world->keybindings, "map left"))
196 map_scroll (world->map, WEST, win_map->frame.size);
197 else if (key == get_action_key(world->keybindings, "map center player"))
198 map_center_player (world->map, world->player, win_map->frame.size);
201 int main (int argc, char *argv[]) {
204 // Read in startup options (i.e. replay option and replay start turn).
207 world.interactive = 1;
208 while ((opt = getopt(argc, argv, "s::")) != -1) {
211 world.interactive = 0;
214 start_turn = atoi(optarg);
217 exit(EXIT_FAILURE); } }
219 // Initialize log, player, monsters and items.
220 world.log = calloc(1, sizeof(char));
221 update_log (&world, " ");
222 struct Player player;
223 player.hitpoints = 5;
224 world.player = &player;
228 // For interactive mode, try to load world state from savefile.
230 if (1 == world.interactive && 0 == access("savefile", F_OK)) {
231 file = fopen("savefile", "r");
232 world.seed = read_uint32_bigendian(file);
233 world.turn = read_uint32_bigendian(file);
234 player.pos.y = read_uint16_bigendian(file) - 1;
235 player.pos.x = read_uint16_bigendian(file) - 1;
236 read_map_objects (&world.monster, file, sizeof(struct Monster), read_map_objects_monsterdata);
237 read_map_objects (&world.item, file, sizeof(struct Item), readwrite_map_objects_dummy);
240 // For non-interactive mode, try to load world state from record file.
243 if (0 == world.interactive) {
244 file = fopen("record", "r");
245 world.seed = read_uint32_bigendian(file); }
247 // For interactive-mode in newly started world, generate a start seed from the current time.
249 file = fopen("record", "w");
250 world.seed = time(NULL);
251 write_uint32_bigendian(world.seed, file);
254 // Generate map from seed and, if newly generated world, start positions of actors.
255 rrand(1, world.seed);
256 struct Map map = init_map();
258 if (1 == world.turn) {
259 player.pos = find_passable_pos(&map);
260 unsigned char n_monsters = rrand(0, 0) % 16;
261 unsigned char n_items = rrand(0, 0) % 48;
262 build_map_objects (&world.monster, n_monsters, sizeof(struct Monster), build_map_objects_monsterdata, &map);
263 build_map_objects (&world.item, n_items, sizeof(struct Item), build_map_objects_itemdata, &map); }
265 // Initialize window system and windows.
266 WINDOW * screen = initscr();
269 keypad(screen, TRUE);
271 init_keybindings(&world);
272 struct WinMeta win_meta = init_win_meta(screen);
273 struct Win win_keys = init_win(&win_meta, "Keys", &world, draw_keys_win);
274 struct Win win_map = init_win(&win_meta, "Map", &world, draw_map_win);
275 struct Win win_info = init_win(&win_meta, "Info", &world, draw_info_win);
276 struct Win win_log = init_win(&win_meta, "Log", &world, draw_log_win);
277 win_keys.frame.size.x = 29;
278 win_map.frame.size.x = win_meta.pad.size.x - win_keys.frame.size.x - win_log.frame.size.x - 2;
279 win_info.frame.size.y = 2;
280 win_log.frame.size.y = win_meta.pad.size.y - (2 + win_info.frame.size.y);
281 toggle_window(&win_meta, &win_keys);
282 toggle_window(&win_meta, &win_map);
283 toggle_window(&win_meta, &win_info);
284 toggle_window(&win_meta, &win_log);
288 unsigned char quit_called = 0;
289 unsigned char await_actions = 1;
290 if (0 == world.interactive) {
293 if (start_turn == world.turn)
295 if (0 == start_turn) {
296 draw_all_wins (&win_meta);
298 if (1 == await_actions &&
299 (world.turn < start_turn || key == get_action_key(world.keybindings, "wait / next turn")) ) {
304 else if (0 == action)
305 player_wait (&world);
306 else if (NORTH == action)
307 move_player(&world, NORTH);
308 else if (EAST == action)
309 move_player(&world, EAST);
310 else if (SOUTH == action)
311 move_player(&world, SOUTH);
312 else if (WEST == action)
313 move_player(&world, WEST); }
315 quit_called = meta_keys(key, &world, &win_meta, &win_keys, &win_map, &win_info, &win_log);
316 if (1 == quit_called)
321 uint32_t last_turn = 0;
323 if (last_turn != world.turn) {
325 last_turn = world.turn; }
326 if (1 == await_actions && 0 == player.hitpoints)
328 draw_all_wins (&win_meta);
330 if (1 == await_actions && key == get_action_key(world.keybindings, "player up"))
331 move_player(&world, NORTH);
332 else if (1 == await_actions && key == get_action_key(world.keybindings, "player right"))
333 move_player(&world, EAST);
334 else if (1 == await_actions && key == get_action_key(world.keybindings, "player down"))
335 move_player(&world, SOUTH);
336 else if (1 == await_actions && key == get_action_key(world.keybindings, "player left"))
337 move_player(&world, WEST);
338 else if (1 == await_actions && key == get_action_key(world.keybindings, "wait / next turn"))
339 player_wait (&world);
341 quit_called = meta_keys(key, &world, &win_meta, &win_keys, &win_map, &win_info, &win_log);
342 if (1 == quit_called)
345 // Clean up and exit.
347 for (key = 0; key <= world.keyswindata->max; key++)
348 free(world.keybindings[key].name);
349 free(world.keybindings);
350 free(world.keyswindata);