Had forgotten to actually add the new library.

diff --git a/src/map_object_actions.c b/src/map_object_actions.c
new file mode 100644 (file)
index 0000000..b016c0c
--- /dev/null
+++ b/src/map_object_actions.c
@@ -0,0 +1,89 @@
+#include "map_object_actions.h"
+#include <stdlib.h>
+#include "yx_uint16.h"
+#include "misc.h"
+#include "map.h"
+#include "main.h"
+#include "map_objects.h"
+
+extern char is_passable (struct Map * map, struct yx_uint16 pos) {
+// Check if coordinate on (or beyond) map is accessible to actor movement.
+  char passable = 0;
+  if (0 <= pos.x && pos.x < map->size.x && 0 <= pos.y && pos.y < map->size.y)
+    if ('.' == map->cells[pos.y * map->size.x + pos.x])
+      passable = 1;
+  return passable; }
+
+extern 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->map_obj.pos);
+  char * msg = malloc(100);
+  struct MapObjDef * mod = get_map_obj_def (world, monster->map_obj.type);
+  char * desc = mod->desc;
+  char * desc_other;
+  if (yx_uint16_cmp (t, world->player->pos)) {
+    sprintf(msg, "\nThe %s hits you.", desc);
+    update_log (world, msg);
+    world->player->hitpoints--;
+    if (0 == world->player->hitpoints)
+      update_log (world, "\nYou are dead.");
+    return; }
+  struct Monster * other_monster;
+  for (other_monster = world->monster; other_monster != 0; other_monster = other_monster->map_obj.next) {
+    if (other_monster == monster)
+      continue;
+    if (yx_uint16_cmp (t, other_monster->map_obj.pos)) {
+      mod = get_map_obj_def (world, monster->map_obj.type);
+      desc_other = mod->desc;
+      sprintf(msg, "\n%s bumps into %s.", desc, desc_other);
+      update_log (world, msg);
+      return; } }
+  free (msg);
+  if (is_passable(world->map, t))
+    monster->map_obj.pos = t; }
+
+extern void move_player (struct World * world, char d) {
+// Move player in direction d, update log and turn over to the enemy.
+  struct yx_uint16 t = mv_yx_in_dir (d, world->player->pos);
+  struct Monster * monster;
+  struct MapObjDef * mod;
+  char * msg = calloc(100, sizeof(char));
+  char * desc;
+  for (monster = world->monster; monster != 0; monster = monster->map_obj.next)
+    if (yx_uint16_cmp (t, monster->map_obj.pos)) {
+      mod = get_map_obj_def (world, monster->map_obj.type);
+      desc = mod->desc;
+      sprintf (msg, "\nYou hit the %s.", desc);
+      update_log (world, msg);
+      monster->hitpoints--;
+      if (0 == monster->hitpoints) {
+        sprintf (msg, "\nYou kill the %s.", desc);
+        update_log (world, msg);
+        if (world->monster == monster)
+          world->monster = world->monster->map_obj.next;
+        else {
+          struct Monster * m_prev;
+          for (m_prev = world->monster; m_prev->map_obj.next != monster; m_prev = m_prev->map_obj.next);
+          m_prev->map_obj.next = monster->map_obj.next; }
+        free(monster); }
+      turn_over (world, d);
+      return; }
+  char * msg_content = "You fail to move";
+  char * dir;
+  if      (NORTH == d) dir = "north";
+  else if (EAST  == d) dir = "east" ;
+  else if (SOUTH == d) dir = "south";
+  else if (WEST  == d) dir = "west" ;
+  if (is_passable(world->map, t)) {
+    msg_content = "You move";
+    world->player->pos = t; }
+  sprintf(msg, "\n%s %s.", msg_content, dir);
+  update_log (world, msg);
+  free(msg);
+  turn_over (world, d); }
+
+extern void player_wait (struct World * world) {
+// Make player wait one turn.
+  update_log (world, "\nYou wait.");
+  turn_over (world, 0); }

diff --git a/src/map_object_actions.h b/src/map_object_actions.h
new file mode 100644 (file)
index 0000000..d67e8bb
--- /dev/null
+++ b/src/map_object_actions.h
@@ -0,0 +1,15 @@
+#ifndef MAP_OBJECT_ACTIONS_H
+#define MAP_OBJECT_ACTIONS_H
+
+#include "yx_uint16.h"
+
+struct World;
+struct Map;
+struct Monster;
+
+extern char is_passable (struct Map *, struct yx_uint16);
+extern void move_monster (struct World *, struct Monster *);
+extern void move_player (struct World *, char);
+extern void player_wait(struct World *);
+
+#endif