10 #include "keybindings.h"
11 #include "readwrite.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)] = '.';
59 uint32_t repeats, root, curpos;
60 for (root = 0; root * root * root < size; root++);
61 for (repeats = 0; repeats < size * root; repeats++) {
62 y = rrand(0, 0) % map.size.y;
63 x = rrand(0, 0) % map.size.x;
64 curpos = y * map.size.x + x;
65 if ('~' == map.cells[curpos] &&
66 ( (curpos >= map.size.x && '.' == map.cells[curpos - map.size.x])
67 || (curpos < map.size.x * (map.size.y-1) && '.' == map.cells[curpos + map.size.x])
68 || (curpos > 0 && curpos % map.size.x != 0 && '.' == map.cells[curpos-1])
69 || (curpos < (map.size.x * map.size.y) && (curpos+1) % map.size.x != 0 && '.' == map.cells[curpos+1])))
70 map.cells[y * map.size.x + x] = '.'; }
73 void map_scroll (struct Map * map, char dir) {
74 // Scroll map into direction dir if possible by changing the offset.
75 if (NORTH == dir && map->offset.y > 0) map->offset.y--;
76 else if (SOUTH == dir) map->offset.y++;
77 else if (WEST == dir && map->offset.x > 0) map->offset.x--;
78 else if (EAST == dir) map->offset.x++; }
80 void turn_over (struct World * world, char action) {
81 // Record action in game record file, increment turn and move enemy.
82 if (1 == world->interactive) {
83 FILE * file = fopen("record", "a");
87 rrand(1, world->seed * world->turn);
88 struct Monster * monster;
89 for (monster = world->monster; monster != 0; monster = monster->next)
90 move_monster(world, monster); }
92 void save_game(struct World * world) {
93 // Save game data to game file.
94 FILE * file = fopen("savefile", "w");
95 write_uint32_bigendian(world->seed, file);
96 write_uint32_bigendian(world->turn, file);
97 write_uint16_bigendian(world->player->pos.y, file);
98 write_uint16_bigendian(world->player->pos.x, file);
99 write_uint16_bigendian(world->monster->pos.y, file);
100 write_uint16_bigendian(world->monster->pos.x, file);
101 write_uint16_bigendian(world->monster->next->pos.y, file);
102 write_uint16_bigendian(world->monster->next->pos.x, file);
103 write_uint16_bigendian(world->monster->next->next->pos.y, file);
104 write_uint16_bigendian(world->monster->next->next->pos.x, file);
107 void toggle_window (struct WinMeta * win_meta, struct Win * win) {
108 // Toggle display of window win.
109 if (0 != win->frame.curses_win)
110 suspend_win(win_meta, win);
112 append_win(win_meta, win); }
114 void scroll_pad (struct WinMeta * win_meta, char dir) {
115 // Try to scroll pad left or right.
117 reset_pad_offset(win_meta, win_meta->pad_offset + 1);
119 reset_pad_offset(win_meta, win_meta->pad_offset - 1); }
121 void growshrink_active_window (struct WinMeta * win_meta, char change) {
122 // Grow or shrink active window horizontally or vertically by one cell size.
123 if (0 != win_meta->active) {
124 struct yx_uint16 size = win_meta->active->frame.size;
125 if (change == '-') size.y--;
126 else if (change == '+') size.y++;
127 else if (change == '_') size.x--;
128 else if (change == '*') size.x++;
129 resize_active_win (win_meta, size); } }
131 unsigned char meta_keys(int key, struct World * world, struct WinMeta * win_meta, struct Win * win_keys,
132 struct Win * win_map, struct Win * win_info, struct Win * win_log) {
133 // Call some meta program / window management actions dependent on key. Return 1 to signal quitting.
134 if (key == get_action_key(world->keybindings, "quit"))
136 else if (key == get_action_key(world->keybindings, "scroll pad right"))
137 scroll_pad (win_meta, '+');
138 else if (key == get_action_key(world->keybindings, "scroll pad left"))
139 scroll_pad (win_meta, '-');
140 else if (key == get_action_key(world->keybindings, "toggle keys window"))
141 toggle_window(win_meta, win_keys);
142 else if (key == get_action_key(world->keybindings, "toggle map window"))
143 toggle_window(win_meta, win_map);
144 else if (key == get_action_key(world->keybindings, "toggle info window"))
145 toggle_window(win_meta, win_info);
146 else if (key == get_action_key(world->keybindings, "toggle log window"))
147 toggle_window(win_meta, win_log);
148 else if (key == get_action_key(world->keybindings, "cycle forwards"))
149 cycle_active_win(win_meta, 'n');
150 else if (key == get_action_key(world->keybindings, "cycle backwards"))
151 cycle_active_win(win_meta, 'p');
152 else if (key == get_action_key(world->keybindings, "shift forwards"))
153 shift_active_win(win_meta, 'f');
154 else if (key == get_action_key(world->keybindings, "shift backwards"))
155 shift_active_win(win_meta, 'b');
156 else if (key == get_action_key(world->keybindings, "grow horizontally"))
157 growshrink_active_window(win_meta, '*');
158 else if (key == get_action_key(world->keybindings, "shrink horizontally"))
159 growshrink_active_window(win_meta, '_');
160 else if (key == get_action_key(world->keybindings, "grow vertically"))
161 growshrink_active_window(win_meta, '+');
162 else if (key == get_action_key(world->keybindings, "shrink vertically"))
163 growshrink_active_window(win_meta, '-');
164 else if (key == get_action_key(world->keybindings, "save keys"))
165 save_keybindings(world);
166 else if (key == get_action_key(world->keybindings, "keys nav up"))
167 keyswin_move_selection (world, 'u');
168 else if (key == get_action_key(world->keybindings, "keys nav down"))
169 keyswin_move_selection (world, 'd');
170 else if (key == get_action_key(world->keybindings, "keys mod"))
171 keyswin_mod_key (world, win_meta);
172 else if (key == get_action_key(world->keybindings, "map up"))
173 map_scroll (world->map, NORTH);
174 else if (key == get_action_key(world->keybindings, "map down"))
175 map_scroll (world->map, SOUTH);
176 else if (key == get_action_key(world->keybindings, "map right"))
177 map_scroll (world->map, EAST);
178 else if (key == get_action_key(world->keybindings, "map left"))
179 map_scroll (world->map, WEST);
182 int main (int argc, char *argv[]) {
185 // Read in startup options (i.e. replay option and replay start turn).
188 world.interactive = 1;
189 while ((opt = getopt(argc, argv, "s::")) != -1) {
192 world.interactive = 0;
195 start_turn = atoi(optarg);
198 exit(EXIT_FAILURE); } }
200 // Initialize log, player and monsters.
201 world.log = calloc(1, sizeof(char));
202 update_log (&world, " ");
203 struct Player player;
204 world.player = &player;
205 struct Monster monster1;
206 struct Monster monster2;
207 struct Monster monster3;
208 world.monster = &monster1;
209 monster1.next = &monster2;
210 monster2.next = &monster3;
216 // For interactive mode, try to load world state from savefile.
218 if (1 == world.interactive && 0 == access("savefile", F_OK)) {
219 file = fopen("savefile", "r");
220 world.seed = read_uint32_bigendian(file);
221 world.turn = read_uint32_bigendian(file);
222 player.pos.y = read_uint16_bigendian(file);
223 player.pos.x = read_uint16_bigendian(file);
224 monster1.pos.y = read_uint16_bigendian(file);
225 monster1.pos.x = read_uint16_bigendian(file);
226 monster2.pos.y = read_uint16_bigendian(file);
227 monster2.pos.x = read_uint16_bigendian(file);
228 monster3.pos.y = read_uint16_bigendian(file);
229 monster3.pos.x = read_uint16_bigendian(file);
232 // For non-interactive mode, try to load world state from frecord file.
235 if (0 == world.interactive) {
236 file = fopen("record", "r");
237 world.seed = read_uint32_bigendian(file); }
239 // For interactive-mode in newly started world, generate a start seed from the current time.
241 file = fopen("record", "w");
242 world.seed = time(NULL);
243 write_uint32_bigendian(world.seed, file);
246 // Generate map from seed and, if newly generated world, start positions of actors.
247 rrand(1, world.seed);
248 struct Map map = init_map();
250 if (1 == world.turn) {
251 for (player.pos.y = player.pos.x = 0; 0 == is_passable(&map, player.pos);) {
252 player.pos.y = rrand(0, 0) % map.size.y;
253 player.pos.x = rrand(0, 0) % map.size.x; }
254 struct Monster * monster;
255 for (monster = world.monster; monster != 0; monster = monster->next)
256 for (monster->pos.y = monster->pos.x = 0; 0 == is_passable(&map, monster->pos);) {
257 monster->pos.y = rrand(0, 0) % map.size.y;
258 monster->pos.x = rrand(0, 0) % map.size.x; } }
260 // Initialize window system and windows.
261 WINDOW * screen = initscr();
264 keypad(screen, TRUE);
266 init_keybindings(&world);
267 struct WinMeta win_meta = init_win_meta(screen);
268 struct Win win_keys = init_win(&win_meta, "Keys", &world, draw_keys_win);
269 struct Win win_map = init_win(&win_meta, "Map", &world, draw_map_win);
270 struct Win win_info = init_win(&win_meta, "Info", &world, draw_info_win);
271 struct Win win_log = init_win(&win_meta, "Log", &world, draw_log_win);
272 win_keys.frame.size.x = 29;
273 win_map.frame.size.x = win_meta.pad.size.x - win_keys.frame.size.x - win_log.frame.size.x - 2;
274 win_info.frame.size.y = 1;
275 win_log.frame.size.y = win_meta.pad.size.y - 3;
276 toggle_window(&win_meta, &win_keys);
277 toggle_window(&win_meta, &win_map);
278 toggle_window(&win_meta, &win_info);
279 toggle_window(&win_meta, &win_log);
283 unsigned char quit_called = 0;
284 if (0 == world.interactive) {
285 unsigned char still_reading_file = 1;
288 if (start_turn == world.turn)
290 if (0 == start_turn) {
291 draw_all_wins (&win_meta);
293 if (1 == still_reading_file &&
294 (world.turn < start_turn || key == get_action_key(world.keybindings, "wait / next turn")) ) {
298 still_reading_file = 0; }
299 else if (0 == action)
300 player_wait (&world);
301 else if (NORTH == action)
302 move_player(&world, NORTH);
303 else if (EAST == action)
304 move_player(&world, EAST);
305 else if (SOUTH == action)
306 move_player(&world, SOUTH);
307 else if (WEST == action)
308 move_player(&world, WEST); }
310 quit_called = meta_keys(key, &world, &win_meta, &win_keys, &win_map, &win_info, &win_log);
311 if (1 == quit_called)
316 uint32_t last_turn = 0;
318 if (last_turn != world.turn) {
320 last_turn = world.turn; }
321 draw_all_wins (&win_meta);
323 if (key == get_action_key(world.keybindings, "player up"))
324 move_player(&world, NORTH);
325 else if (key == get_action_key(world.keybindings, "player right"))
326 move_player(&world, EAST);
327 else if (key == get_action_key(world.keybindings, "player down"))
328 move_player(&world, SOUTH);
329 else if (key == get_action_key(world.keybindings, "player left"))
330 move_player(&world, WEST);
331 else if (key == get_action_key(world.keybindings, "wait / next turn"))
332 player_wait (&world);
334 quit_called = meta_keys(key, &world, &win_meta, &win_keys, &win_map, &win_info, &win_log);
335 if (1 == quit_called)
338 // Clean up and exit.
340 for (key = 0; key <= world.keyswindata->max; key++)
341 free(world.keybindings[key].name);
342 free(world.keybindings);
343 free(world.keyswindata);