9 #include "keybindings.h"
10 #include "readwrite.h"
11 #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 uint16_t center_offset (uint16_t pos, uint16_t mapsize, uint16_t framesize) {
46 // Return the offset for display of a map inside a frame centered on pos.
48 if (mapsize > framesize) {
49 if (pos > framesize / 2) {
50 if (pos < mapsize - (framesize / 2))
51 offset = pos - (framesize / 2);
53 offset = mapsize - framesize; } }
56 void turn_over (struct World * world, char action) {
57 // Record action in game record file, increment turn and move enemy.
58 if (1 == world->interactive) {
59 FILE * file = fopen("record", "a");
63 rrand(1, world->seed * world->turn);
64 struct Monster * monster;
65 for (monster = world->monster; monster != 0; monster = monster->cmo.next)
66 move_monster(world, monster); }
68 void save_game(struct World * world) {
69 // Save game data to game file.
70 FILE * file = fopen("savefile", "w");
71 write_uint32_bigendian(world->seed, file);
72 write_uint32_bigendian(world->turn, file);
73 write_uint16_bigendian(world->player->pos.y + 1, file);
74 write_uint16_bigendian(world->player->pos.x + 1, file);
75 fputc(world->player->hitpoints, file);
76 write_map_objects (world->monster, file, write_map_objects_monsterdata);
77 write_map_objects (world->item, file, readwrite_map_objects_dummy);
80 void toggle_window (struct WinMeta * win_meta, struct Win * win) {
81 // Toggle display of window win.
82 if (0 != win->frame.curses_win)
83 suspend_win(win_meta, win);
85 append_win(win_meta, win); }
87 void scroll_pad (struct WinMeta * win_meta, char dir) {
88 // Try to scroll pad left or right.
90 reset_pad_offset(win_meta, win_meta->pad_offset + 1);
92 reset_pad_offset(win_meta, win_meta->pad_offset - 1); }
94 void growshrink_active_window (struct WinMeta * win_meta, char change) {
95 // Grow or shrink active window horizontally or vertically by one cell size.
96 if (0 != win_meta->active) {
97 struct yx_uint16 size = win_meta->active->frame.size;
98 if (change == '-') size.y--;
99 else if (change == '+') size.y++;
100 else if (change == '_') size.x--;
101 else if (change == '*') size.x++;
102 resize_active_win (win_meta, size); } }
104 unsigned char meta_keys(int key, struct World * world, struct WinMeta * win_meta, struct Win * win_keys,
105 struct Win * win_map, struct Win * win_info, struct Win * win_log) {
106 // Call some meta program / window management actions dependent on key. Return 1 to signal quitting.
107 if (key == get_action_key(world->keybindings, "quit"))
109 else if (key == get_action_key(world->keybindings, "scroll pad right"))
110 scroll_pad (win_meta, '+');
111 else if (key == get_action_key(world->keybindings, "scroll pad left"))
112 scroll_pad (win_meta, '-');
113 else if (key == get_action_key(world->keybindings, "toggle keys window"))
114 toggle_window(win_meta, win_keys);
115 else if (key == get_action_key(world->keybindings, "toggle map window"))
116 toggle_window(win_meta, win_map);
117 else if (key == get_action_key(world->keybindings, "toggle info window"))
118 toggle_window(win_meta, win_info);
119 else if (key == get_action_key(world->keybindings, "toggle log window"))
120 toggle_window(win_meta, win_log);
121 else if (key == get_action_key(world->keybindings, "cycle forwards"))
122 cycle_active_win(win_meta, 'n');
123 else if (key == get_action_key(world->keybindings, "cycle backwards"))
124 cycle_active_win(win_meta, 'p');
125 else if (key == get_action_key(world->keybindings, "shift forwards"))
126 shift_active_win(win_meta, 'f');
127 else if (key == get_action_key(world->keybindings, "shift backwards"))
128 shift_active_win(win_meta, 'b');
129 else if (key == get_action_key(world->keybindings, "grow horizontally"))
130 growshrink_active_window(win_meta, '*');
131 else if (key == get_action_key(world->keybindings, "shrink horizontally"))
132 growshrink_active_window(win_meta, '_');
133 else if (key == get_action_key(world->keybindings, "grow vertically"))
134 growshrink_active_window(win_meta, '+');
135 else if (key == get_action_key(world->keybindings, "shrink vertically"))
136 growshrink_active_window(win_meta, '-');
137 else if (key == get_action_key(world->keybindings, "save keys"))
138 save_keybindings(world);
139 else if (key == get_action_key(world->keybindings, "keys nav up"))
140 keyswin_move_selection (world, 'u');
141 else if (key == get_action_key(world->keybindings, "keys nav down"))
142 keyswin_move_selection (world, 'd');
143 else if (key == get_action_key(world->keybindings, "keys mod"))
144 keyswin_mod_key (world, win_meta);
145 else if (key == get_action_key(world->keybindings, "map up"))
146 map_scroll (world->map, NORTH, win_map->frame.size);
147 else if (key == get_action_key(world->keybindings, "map down"))
148 map_scroll (world->map, SOUTH, win_map->frame.size);
149 else if (key == get_action_key(world->keybindings, "map right"))
150 map_scroll (world->map, EAST, win_map->frame.size);
151 else if (key == get_action_key(world->keybindings, "map left"))
152 map_scroll (world->map, WEST, win_map->frame.size);
153 else if (key == get_action_key(world->keybindings, "map center player"))
154 map_center_player (world->map, world->player, win_map->frame.size);
157 int main (int argc, char *argv[]) {
160 // Read in startup options (i.e. replay option and replay start turn).
163 world.interactive = 1;
164 while ((opt = getopt(argc, argv, "s::")) != -1) {
167 world.interactive = 0;
170 start_turn = atoi(optarg);
173 exit(EXIT_FAILURE); } }
175 // Initialize log, player, monsters and items.
176 world.log = calloc(1, sizeof(char));
177 update_log (&world, " ");
178 struct Player player;
179 player.hitpoints = 5;
180 world.player = &player;
184 // For interactive mode, try to load world state from savefile.
186 if (1 == world.interactive && 0 == access("savefile", F_OK)) {
187 file = fopen("savefile", "r");
188 world.seed = read_uint32_bigendian(file);
189 world.turn = read_uint32_bigendian(file);
190 player.pos.y = read_uint16_bigendian(file) - 1;
191 player.pos.x = read_uint16_bigendian(file) - 1;
192 player.hitpoints = fgetc(file);
193 read_map_objects (&world.monster, file, sizeof(struct Monster), read_map_objects_monsterdata);
194 read_map_objects (&world.item, file, sizeof(struct Item), readwrite_map_objects_dummy);
197 // For non-interactive mode, try to load world state from record file.
200 if (0 == world.interactive) {
201 file = fopen("record", "r");
202 world.seed = read_uint32_bigendian(file); }
204 // For interactive-mode in newly started world, generate a start seed from the current time.
206 file = fopen("record", "w");
207 world.seed = time(NULL);
208 write_uint32_bigendian(world.seed, file);
211 // Generate map from seed and, if newly generated world, start positions of actors.
212 rrand(1, world.seed);
213 struct Map map = init_map();
215 if (1 == world.turn) {
216 player.pos = find_passable_pos(&map);
217 unsigned char n_monsters = rrand(0, 0) % 16;
218 unsigned char n_items = rrand(0, 0) % 48;
219 build_map_objects (&world.monster, n_monsters, sizeof(struct Monster), build_map_objects_monsterdata, &map);
220 build_map_objects (&world.item, n_items, sizeof(struct Item), build_map_objects_itemdata, &map); }
222 // Initialize window system and windows.
223 WINDOW * screen = initscr();
226 keypad(screen, TRUE);
228 init_keybindings(&world);
229 struct WinMeta win_meta = init_win_meta(screen);
230 struct Win win_keys = init_win(&win_meta, "Keys", &world, draw_keys_win);
231 struct Win win_map = init_win(&win_meta, "Map", &world, draw_map_win);
232 struct Win win_info = init_win(&win_meta, "Info", &world, draw_info_win);
233 struct Win win_log = init_win(&win_meta, "Log", &world, draw_log_win);
234 win_keys.frame.size.x = 29;
235 win_map.frame.size.x = win_meta.pad.size.x - win_keys.frame.size.x - win_log.frame.size.x - 2;
236 win_info.frame.size.y = 2;
237 win_log.frame.size.y = win_meta.pad.size.y - (2 + win_info.frame.size.y);
238 toggle_window(&win_meta, &win_keys);
239 toggle_window(&win_meta, &win_map);
240 toggle_window(&win_meta, &win_info);
241 toggle_window(&win_meta, &win_log);
245 unsigned char quit_called = 0;
246 unsigned char await_actions = 1;
247 if (0 == world.interactive) {
250 if (start_turn == world.turn)
252 if (0 == start_turn) {
253 draw_all_wins (&win_meta);
255 if (1 == await_actions &&
256 (world.turn < start_turn || key == get_action_key(world.keybindings, "wait / next turn")) ) {
261 else if (0 == action)
262 player_wait (&world);
263 else if (NORTH == action)
264 move_player(&world, NORTH);
265 else if (EAST == action)
266 move_player(&world, EAST);
267 else if (SOUTH == action)
268 move_player(&world, SOUTH);
269 else if (WEST == action)
270 move_player(&world, WEST); }
272 quit_called = meta_keys(key, &world, &win_meta, &win_keys, &win_map, &win_info, &win_log);
273 if (1 == quit_called)
278 uint32_t last_turn = 0;
280 if (last_turn != world.turn) {
282 last_turn = world.turn; }
283 if (1 == await_actions && 0 == player.hitpoints)
285 draw_all_wins (&win_meta);
287 if (1 == await_actions && key == get_action_key(world.keybindings, "player up"))
288 move_player(&world, NORTH);
289 else if (1 == await_actions && key == get_action_key(world.keybindings, "player right"))
290 move_player(&world, EAST);
291 else if (1 == await_actions && key == get_action_key(world.keybindings, "player down"))
292 move_player(&world, SOUTH);
293 else if (1 == await_actions && key == get_action_key(world.keybindings, "player left"))
294 move_player(&world, WEST);
295 else if (1 == await_actions && key == get_action_key(world.keybindings, "wait / next turn"))
296 player_wait (&world);
298 quit_called = meta_keys(key, &world, &win_meta, &win_keys, &win_map, &win_info, &win_log);
299 if (1 == quit_called)
302 // Clean up and exit.
304 for (key = 0; key <= world.keyswindata->max; key++)
305 free(world.keybindings[key].name);
306 free(world.keybindings);
307 free(world.keyswindata);