X-Git-Url: https://plomlompom.com/repos/berlin_corona.txt?a=blobdiff_plain;f=src%2Froguelike.c;h=a1b7373bcc47ae1b2a27e29405a4fc1b1b27d3bc;hb=015ca9d3e02bfe4f8a18cdec43817e2521015c00;hp=206c0289243c1d152d56b1a53dd8e273c21f8501;hpb=ce023c819bd95ca0c42b7e759207dce1695216e2;p=plomrogue

diff --git a/src/roguelike.c b/src/roguelike.c
index 206c028..a1b7373 100644
--- a/src/roguelike.c
+++ b/src/roguelike.c
@@ -10,6 +10,11 @@
 #include "keybindings.h"
 #include "readwrite.h"
 
+#define NORTH 1
+#define EAST 2
+#define SOUTH 3
+#define WEST 4
+
 uint16_t rrand(char use_seed, uint32_t new_seed) {
 // Pseudo-random number generator (LGC algorithm). Use instead of rand() to ensure portable predictability.
   static uint32_t seed;
@@ -21,29 +26,29 @@ uint16_t rrand(char use_seed, uint32_t new_seed) {
 struct Map init_map () {
 // Initialize map with some experimental start values.
   struct Map map;
-  map.width = 64;
-  map.height = 64;
-  map.offset_x = 0;
-  map.offset_y = 0;
-  uint32_t size = map.width * map.height;
+  map.size.x = 64;
+  map.size.y = 64;
+  map.offset.x = 0;
+  map.offset.y = 0;
+  uint32_t size = map.size.x * map.size.y;
   map.cells = malloc(size);
   uint16_t y, x;
-  for (y = 0; y < map.height; y++)
-    for (x = 0; x < map.width; x++)
-      map.cells[(y * map.width) + x] = '~';
-  map.cells[size / 2 + (map.width / 2)] = '.';
+  for (y = 0; y < map.size.y; y++)
+    for (x = 0; x < map.size.x; x++)
+      map.cells[(y * map.size.x) + x] = '~';
+  map.cells[size / 2 + (map.size.x / 2)] = '.';
   uint32_t repeats, root, curpos;
   for (root = 0; root * root * root < size; root++);
   for (repeats = 0; repeats < size * root; repeats++) {
-    y = rrand(0, 0) % map.height;
-    x = rrand(0, 0) % map.width;
-    curpos = y * map.width + x;
+    y = rrand(0, 0) % map.size.y;
+    x = rrand(0, 0) % map.size.x;
+    curpos = y * map.size.x + x;
     if ('~' == map.cells[curpos] &&
-        (   (curpos >= map.width && '.' == map.cells[curpos - map.width])
-         || (curpos < map.width * (map.height-1) && '.' == map.cells[curpos + map.width])
-         || (curpos > 0 && curpos % map.width != 0 && '.' == map.cells[curpos-1])
-         || (curpos < (map.width * map.height) && (curpos+1) % map.width != 0 && '.' == map.cells[curpos+1])))
-      map.cells[y * map.width + x] = '.'; }
+        (   (curpos >= map.size.x && '.' == map.cells[curpos - map.size.x])
+         || (curpos < map.size.x * (map.size.y-1) && '.' == map.cells[curpos + map.size.x])
+         || (curpos > 0 && curpos % map.size.x != 0 && '.' == map.cells[curpos-1])
+         || (curpos < (map.size.x * map.size.y) && (curpos+1) % map.size.x != 0 && '.' == map.cells[curpos+1])))
+      map.cells[y * map.size.x + x] = '.'; }
   return map; }
 
 void save_game(struct World * world) {
@@ -51,14 +56,14 @@ void save_game(struct World * world) {
   FILE * file = fopen("savefile", "w");
   write_uint32_bigendian(world->seed, file);
   write_uint32_bigendian(world->turn, file);
-  write_uint16_bigendian(world->player->y, file);
-  write_uint16_bigendian(world->player->x, file);
-  write_uint16_bigendian(world->monster->y, file);
-  write_uint16_bigendian(world->monster->x, file);
-  write_uint16_bigendian(world->monster->next->y, file);
-  write_uint16_bigendian(world->monster->next->x, file);
-  write_uint16_bigendian(world->monster->next->next->y, file);
-  write_uint16_bigendian(world->monster->next->next->x, file);
+  write_uint16_bigendian(world->player->pos.y, file);
+  write_uint16_bigendian(world->player->pos.x, file);
+  write_uint16_bigendian(world->monster->pos.y, file);
+  write_uint16_bigendian(world->monster->pos.x, file);
+  write_uint16_bigendian(world->monster->next->pos.y, file);
+  write_uint16_bigendian(world->monster->next->pos.x, file);
+  write_uint16_bigendian(world->monster->next->next->pos.y, file);
+  write_uint16_bigendian(world->monster->next->next->pos.x, file);
   fclose(file); }
 
 void record_action (char action) {
@@ -67,30 +72,21 @@ void record_action (char action) {
   fputc(action, file);
   fclose(file); }
 
+struct yx_uint16 mv_yx_in_dir (char d, struct yx_uint16 yx) {
+// Return yx coordinates one step to the direction d of yx.
+  if      (d == NORTH) yx.y--;
+  else if (d == EAST)  yx.x++;
+  else if (d == SOUTH) yx.y++;
+  else if (d == WEST)  yx.x--;
+  return yx; }
+
 void next_turn (struct World * world) {
 // Increment turn and move enemy.
   world->turn++;
   rrand(1, world->seed * world->turn);
-  char d;
   struct Monster * monster;
-  uint16_t ty, tx;
-  for (monster = world->monster; monster != 0; monster = monster->next) {
-    d = rrand(0, 0) % 5;
-    ty = monster->y;
-    tx = monster->x;
-    if (1 == d)
-      ty++;
-    else if (2 == d)
-      ty--;
-    else if (3 == d)
-      tx++;
-    else if (4 == d)
-      tx--;
-    if (tx == world->player->x && ty == world->player->y)
-      update_log(world, "\nThe monster hits you.");
-    else if (is_passable(world->map, ty, tx)) {
-      monster->y = ty;
-      monster->x = tx; } } }
+  for (monster = world->monster; monster != 0; monster = monster->next)
+    move_monster(world, monster); }
 
 void update_log (struct World * world, char * text) {
 // Update log with new text to be appended.
@@ -104,40 +100,50 @@ void update_log (struct World * world, char * text) {
   free(world->log);
   world->log = new_text; }
 
+void move_monster (struct World * world, struct Monster * monster) {
+// Move monster in random direction, trigger fighting when hindered by player/monster.
+  char d = rrand(0, 0) % 5;
+  struct yx_uint16 t = mv_yx_in_dir (d, monster->pos);
+  if (yx_uint16_cmp (t, world->player->pos)) {
+    update_log (world, "\nThe monster hits you.");
+    return; }
+  char met_monster = 0;
+  struct Monster * other_monster;
+  for (other_monster = world->monster; other_monster != 0; other_monster = other_monster->next) {
+    if (other_monster == monster)
+      continue;
+    if (yx_uint16_cmp (t, other_monster->pos)) {
+      met_monster = 1;
+      break; } }
+  if (met_monster)
+    update_log (world, "\nMonster hits monster.");
+  else if (0 == met_monster && is_passable(world->map, t.y, t.x))
+    monster->pos = t; }
+
 void move_player (struct World * world, char d) {
 // Move player in direction d, increment turn counter and update log.
   static char prev = 0;
   char success = 0;
   char * dir;
-  uint16_t ty = world->player->y;
-  uint16_t tx = world->player->x;
-  if ('s' == d) {
-    dir = "south";
-    ty++; }
-  if ('n' == d) {
-    dir = "north";
-    ty--; }
-  if ('w' == d) {
-    dir = "west";
-    tx--; }
-  if ('e' == d) {
-    dir = "east";
-    tx++; }
+  struct yx_uint16 t = mv_yx_in_dir (d, world->player->pos);
   struct Monster * monster;
   for (monster = world->monster; monster != 0; monster = monster->next)
-    if (ty == monster->y && tx == monster->x) {
+    if (yx_uint16_cmp (t, monster->pos)) {
       success = 2;
       break; }
-  if (2 != success && is_passable(world->map, ty, tx)) {
+  if (2 != success && is_passable(world->map, t.y, t.x)) {
     success = 1;
-    world->player->y = ty;
-    world->player->x = tx; }
+    world->player->pos = t; }
   if (success * d == prev)
     update_log (world, ".");
   else {
     if (2 == success)
       update_log (world, "\nYou hit the monster.");
     else {
+      if      (NORTH == d) dir = "north";
+      else if (EAST  == d) dir = "east" ;
+      else if (SOUTH == d) dir = "south";
+      else if (WEST  == d) dir = "west" ;
       char * msg = calloc(25, sizeof(char));
       char * msg_content = "You fail to move";
       if (1 == success)
@@ -153,8 +159,8 @@ void move_player (struct World * world, char d) {
 char is_passable (struct Map * map, uint16_t y, uint16_t x) {
 // Check if coordinate on (or beyond) map is accessible to movement.
   char passable = 0;
-  if (0 <= x && x < map->width && 0 <= y && y < map->height)
-    if ('.' == map->cells[y * map->width + x])
+  if (0 <= x && x < map->size.x && 0 <= y && y < map->size.y)
+    if ('.' == map->cells[y * map->size.x + x])
       passable = 1;
   return passable; }
 
@@ -196,14 +202,10 @@ void growshrink_active_window (struct WinMeta * win_meta, char change) {
 
 void map_scroll (struct Map * map, char dir) {
 // Scroll map into direction dir if possible by changing the offset.
-  if      ('n' == dir && map->offset_y > 0)
-    map->offset_y--;
-  else if ('s' == dir)
-    map->offset_y++;
-  else if ('w' == dir && map->offset_x > 0)
-    map->offset_x--;
-  else if ('e' == dir)
-    map->offset_x++; }
+  if      (NORTH == dir && map->offset.y > 0) map->offset.y--;
+  else if (SOUTH == dir)                      map->offset.y++;
+  else if (WEST  == dir && map->offset.x > 0) map->offset.x--;
+  else if (EAST  == dir)                      map->offset.x++; }
 
 unsigned char meta_keys(int key, struct World * world, struct WinMeta * win_meta, struct Win * win_keys,
                         struct Win * win_map, struct Win * win_info, struct Win * win_log) {
@@ -247,13 +249,13 @@ unsigned char meta_keys(int key, struct World * world, struct WinMeta * win_meta
   else if (key == get_action_key(world->keybindings, "keys mod"))
     keyswin_mod_key (world, win_meta);
   else if (key == get_action_key(world->keybindings, "map up"))
-    map_scroll (world->map, 'n');
+    map_scroll (world->map, NORTH);
   else if (key == get_action_key(world->keybindings, "map down"))
-    map_scroll (world->map, 's');
+    map_scroll (world->map, SOUTH);
   else if (key == get_action_key(world->keybindings, "map right"))
-    map_scroll (world->map, 'e');
+    map_scroll (world->map, EAST);
   else if (key == get_action_key(world->keybindings, "map left"))
-    map_scroll (world->map, 'w');
+    map_scroll (world->map, WEST);
   return 0; }
 
 int main (int argc, char *argv[]) {
@@ -296,14 +298,14 @@ int main (int argc, char *argv[]) {
     file = fopen("savefile", "r");
     world.seed = read_uint32_bigendian(file);
     world.turn = read_uint32_bigendian(file);
-    player.y = read_uint16_bigendian(file);
-    player.x = read_uint16_bigendian(file);
-    monster1.y = read_uint16_bigendian(file);
-    monster1.x = read_uint16_bigendian(file);
-    monster2.y = read_uint16_bigendian(file);
-    monster2.x = read_uint16_bigendian(file);
-    monster3.y = read_uint16_bigendian(file);
-    monster3.x = read_uint16_bigendian(file);
+    player.pos.y = read_uint16_bigendian(file);
+    player.pos.x = read_uint16_bigendian(file);
+    monster1.pos.y = read_uint16_bigendian(file);
+    monster1.pos.x = read_uint16_bigendian(file);
+    monster2.pos.y = read_uint16_bigendian(file);
+    monster2.pos.x = read_uint16_bigendian(file);
+    monster3.pos.y = read_uint16_bigendian(file);
+    monster3.pos.x = read_uint16_bigendian(file);
     fclose(file); }
 
   // For non-interactive mode, try to load world state from frecord file.
@@ -325,14 +327,14 @@ int main (int argc, char *argv[]) {
   struct Map map = init_map();
   world.map = &map;
   if (1 == world.turn) {
-    for (player.y = player.x = 0; 0 == is_passable(&map, player.y, player.x);) {
-      player.y = rrand(0, 0) % map.height;
-      player.x = rrand(0, 0) % map.width; }
+    for (player.pos.y = player.pos.x = 0; 0 == is_passable(&map, player.pos.y, player.pos.x);) {
+      player.pos.y = rrand(0, 0) % map.size.y;
+      player.pos.x = rrand(0, 0) % map.size.x; }
     struct Monster * monster;
     for (monster = world.monster; monster != 0; monster = monster->next)
-      for (monster->y = monster->x = 0; 0 == is_passable(&map, monster->y, monster->x);) {
-        monster->y = rrand(0, 0) % map.height;
-        monster->x = rrand(0, 0) % map.width; } }
+      for (monster->pos.y = monster->pos.x = 0; 0 == is_passable(&map, monster->pos.y, monster->pos.x);) {
+        monster->pos.y = rrand(0, 0) % map.size.y;
+        monster->pos.x = rrand(0, 0) % map.size.x; } }
 
   // Initialize window system and windows.
   WINDOW * screen = initscr();
@@ -375,14 +377,14 @@ int main (int argc, char *argv[]) {
           still_reading_file = 0; }
         else if (0 == action)
           player_wait (&world);
-        else if ('s' == action)
-          move_player(&world, 's');
-        else if ('n' == action)
-          move_player(&world, 'n');
-        else if ('e' == action)
-          move_player(&world, 'e');
-        else if ('w' == action)
-          move_player(&world, 'w'); }
+        else if (NORTH == action)
+          move_player(&world, NORTH);
+        else if (EAST  == action)
+          move_player(&world, EAST);
+        else if (SOUTH == action)
+          move_player(&world, SOUTH);
+        else if (WEST == action)
+          move_player(&world, WEST); }
       else
         quit_called = meta_keys(key, &world, &win_meta, &win_keys, &win_map, &win_info, &win_log);
         if (1 == quit_called)
@@ -397,14 +399,14 @@ int main (int argc, char *argv[]) {
         last_turn = world.turn; }
       draw_all_wins (&win_meta);
       key = getch();
-      if      (key == get_action_key(world.keybindings, "player down"))
-        move_player(&world, 's');
-      else if (key == get_action_key(world.keybindings, "player up"))
-        move_player(&world, 'n');
+      if      (key == get_action_key(world.keybindings, "player up"))
+        move_player(&world, NORTH);
       else if (key == get_action_key(world.keybindings, "player right"))
-        move_player(&world, 'e');
+        move_player(&world, EAST);
+      else if (key == get_action_key(world.keybindings, "player down"))
+        move_player(&world, SOUTH);
       else if (key == get_action_key(world.keybindings, "player left"))
-        move_player(&world, 'w');
+        move_player(&world, WEST);
       else if (key == get_action_key(world.keybindings, "wait / next turn"))
         player_wait (&world);
       else