From: Christian Heller <c.heller@plomlompom.de>
Date: Mon, 18 Nov 2013 03:22:17 +0000 (+0100)
Subject: Each map object action now take different numbers of turns to complete. Re-wrote... 
X-Git-Tag: tce~929
X-Git-Url: https://plomlompom.com/repos/process_descriptions?a=commitdiff_plain;h=2dccba703435158681552b8a8aefccab79eb13f3;p=plomrogue

Each map object action now take different numbers of turns to complete. Re-wrote large parts of map object actions system, player control and turn_over() for this.
---

diff --git a/config/map_object_actions b/config/map_object_actions
new file mode 100644
index 0000000..1ed03ea
--- /dev/null
+++ b/config/map_object_actions
@@ -0,0 +1,5 @@
+0 1 wait
+1 3 move
+2 10 pick_up
+3 3 drop
+4 30 use
diff --git a/src/command_db.c b/src/command_db.c
index 34db4dc..c0aa523 100644
--- a/src/command_db.c
+++ b/src/command_db.c
@@ -79,7 +79,7 @@ extern char * get_command_longdsc(char * dsc_short)
 extern void init_command_db()
 {
     char * f_name = "init_command_db()";
-    char * err_s = "Trouble in init_cmds() with textfile_sizes().";
+    char * err_s = "Trouble in init_command_db() with textfile_sizes().";
 
     char * path = "config/commands";
     FILE * file = try_fopen(path, "r", f_name);
diff --git a/src/control.c b/src/control.c
index cb5ed3b..502f84a 100644
--- a/src/control.c
+++ b/src/control.c
@@ -2,6 +2,7 @@
 
 #include "control.h"
 #include <stdint.h> /* for uint8_t */
+#include <string.h> /* for strcmp() */
 #include "windows.h" /* for cycle_active_win(), shift_active_win(), struct Win,
                       *  struct WinMeta
                       */
@@ -15,26 +16,35 @@
                          * growshrink_active_window(),toggle_winconfig(),
                          * toggle_win_height_type(), toggle_win_width_type()
                          */
-#include "map_object_actions.h" /* for player_wait(), move_player(),
-                                 * player_drop(), player_pick()
+#include "map_object_actions.h" /* for struct MapObjAct, actor_wait(),
+                                 * actor_move(), actor_drop(), actor_pick(),
+                                 * actor_pick()
                                  */
 #include "command_db.h" /* for is_command_id_shortdsc() */
 #include "misc.h" /* for reload_interface_conf(), save_interface_conf(),
-                   * nav_inventory()
+                   * nav_inventory(), turn_over()
                    */
+#include "map_objects.h" /* for get_player() */
 
 
 
-/* If "cmd" (either (type = "i") command or (type = "k") keybinding identifier)
- * matches "match" in is_cmd_id_shortdsc() or get_available_keycode_to_action(),
- * execute "f" with provided char arguments and return 1; else only return 0.
+/* If "cmd" matches "match" in get_available_keycode_to_action(), execute "f"
+ * with provided char arguments and return 1; else only return 0.
  */
-static uint8_t try_cmd_0args(char type, int cmd, char * match, void (* f) ());
-static uint8_t try_cmd_1args(char type, int cmd, char * match,
-                             void (* f) (char), char c);
-static uint8_t try_cmd_2args(char type, int cmd, char * match,
+static uint8_t try_cmd_0args(int cmd, char * match, void (* f) ());
+static uint8_t try_cmd_1args(int cmd, char * match, void (* f) (char), char c);
+static uint8_t try_cmd_2args(int cmd, char * match,
                              void (* f) (char, char), char c1, char c2);
 
+/* try_player_cmd() helper, returns world.map_obj_acts action id for "name". */
+static uint8_t get_moa_id_by_name(char * name);
+
+/* If "action" is id of command named "match", set player->arg, ->command and
+ * call turn_over().
+ */
+static uint8_t try_player_cmd(int action, char * match, char * command,
+                              uint8_t arg);
+
 /* Return pointer to global keybindings or to keybindings for wingeometry config
  * (c = "g") or winkeys config (c = "k") or active window's keybindings ("w").
  */
@@ -46,10 +56,9 @@ static void wrap_mv_kb_mod(char c1, char c2);
 
 
 
-static uint8_t try_cmd_0args(char type, int cmd, char * match, void (* f) ())
+static uint8_t try_cmd_0args(int cmd, char * match, void (* f) ())
 {
-    if (   ('k' == type && cmd == get_available_keycode_to_action(match))
-        || ('i' == type && is_command_id_shortdsc(cmd, match)))
+    if (cmd == get_available_keycode_to_action(match))
     {
         f();
         return 1;
@@ -59,11 +68,9 @@ static uint8_t try_cmd_0args(char type, int cmd, char * match, void (* f) ())
 
 
 
-static uint8_t try_cmd_1args(char type, int cmd, char * match,
-                             void (* f) (char), char c)
+static uint8_t try_cmd_1args(int cmd, char * match, void (* f) (char), char c)
 {
-    if (   ('k' == type && cmd == get_available_keycode_to_action(match))
-        || ('i' == type && is_command_id_shortdsc(cmd, match)))
+    if (cmd == get_available_keycode_to_action(match))
     {
         f(c);
         return 1;
@@ -73,11 +80,10 @@ static uint8_t try_cmd_1args(char type, int cmd, char * match,
 
 
 
-static uint8_t try_cmd_2args(char type, int cmd, char * match,
+static uint8_t try_cmd_2args(int cmd, char * match,
                              void (* f) (char, char), char c1, char c2)
 {
-    if (   ('k' == type && cmd == get_available_keycode_to_action(match))
-        || ('i' == type && is_command_id_shortdsc(cmd, match)))
+    if (cmd == get_available_keycode_to_action(match))
     {
         f(c1, c2);
         return 1;
@@ -87,6 +93,39 @@ static uint8_t try_cmd_2args(char type, int cmd, char * match,
 
 
 
+static uint8_t get_moa_id_by_name(char * name)
+{
+    struct MapObjAct * moa = world.map_obj_acts;
+    while (NULL != moa)
+    {
+        if (0 == strcmp(moa->name, name))
+        {
+            break;
+        }
+        moa = moa->next;
+    }
+    exit_err(NULL == moa, "get_moa_id_name() did not find map object action.");
+    return moa->id;
+}
+
+
+
+static uint8_t try_player_cmd(int action, char * match, char * command,
+                              uint8_t arg)
+{
+    if (is_command_id_shortdsc(action, match))
+    {
+        struct MapObj * player = get_player();
+        player->arg = arg;
+        player->command = get_moa_id_by_name(command);
+        turn_over(get_command_id(match));
+        return 1;
+    }
+    return 0;
+}
+
+
+
 static struct KeyBiData * select_keybidata_pointer(char c)
 {
     struct KeyBiData * kbd;
@@ -166,16 +205,17 @@ extern uint8_t player_control_by_key(int key)
 
 
 
+
 extern uint8_t player_control_by_id(int action)
 {
-    if (   try_cmd_0args('i', action, "wait", player_wait)
-        || try_cmd_0args('i', action, "drop", player_drop)
-        || try_cmd_0args('i', action, "pick", player_pick)
-        || try_cmd_0args('i', action, "use", player_use)
-        || try_cmd_1args('i', action, "player_u", move_player, 'N')
-        || try_cmd_1args('i', action, "player_d", move_player, 'S')
-        || try_cmd_1args('i', action, "player_r", move_player, 'E')
-        || try_cmd_1args('i', action, "player_l", move_player, 'W'))
+    if (   try_player_cmd(action, "wait", "wait", 0)
+        || try_player_cmd(action, "drop", "drop", world.inventory_select)
+        || try_player_cmd(action, "pick", "pick_up", 0)
+        || try_player_cmd(action, "use", "use", world.inventory_select)
+        || try_player_cmd(action, "player_u", "move", 'N')
+        || try_player_cmd(action, "player_d", "move", 'S')
+        || try_player_cmd(action, "player_r", "move", 'E')
+        || try_player_cmd(action, "player_l", "move", 'W'))
     {
         return 1;
     }
@@ -186,14 +226,14 @@ extern uint8_t player_control_by_id(int action)
 
 extern uint8_t wingeom_control(int key)
 {
-    if (   try_cmd_0args('k', key, "to_height_t", toggle_win_height_type)
-        || try_cmd_0args('k', key, "to_width_t", toggle_win_width_type)
-        || try_cmd_1args('k', key, "grow_h", growshrink_active_window, '*')
-        || try_cmd_1args('k', key, "shri_h", growshrink_active_window, '_')
-        || try_cmd_1args('k', key, "grow_v", growshrink_active_window, '+')
-        || try_cmd_1args('k', key, "shri_v", growshrink_active_window, '-')
-        || try_cmd_1args('k', key, "shift_f", shift_active_win, 'f')
-        || try_cmd_1args('k', key, "shift_b", shift_active_win, 'b'))
+    if (   try_cmd_0args(key, "to_height_t", toggle_win_height_type)
+        || try_cmd_0args(key, "to_width_t", toggle_win_width_type)
+        || try_cmd_1args(key, "grow_h", growshrink_active_window, '*')
+        || try_cmd_1args(key, "shri_h", growshrink_active_window, '_')
+        || try_cmd_1args(key, "grow_v", growshrink_active_window, '+')
+        || try_cmd_1args(key, "shri_v", growshrink_active_window, '-')
+        || try_cmd_1args(key, "shift_f", shift_active_win, 'f')
+        || try_cmd_1args(key, "shift_b", shift_active_win, 'b'))
     {
         return 1;
     }
@@ -204,9 +244,9 @@ extern uint8_t wingeom_control(int key)
 
 extern uint8_t winkeyb_control(int key)
 {
-    if (   try_cmd_1args('k', key, "w_keys_m", wrap_mod_selected_keyb, 'w')
-        || try_cmd_2args('k', key, "w_keys_u", wrap_mv_kb_mod, 'w', 'u')
-        || try_cmd_2args('k', key, "w_keys_d", wrap_mv_kb_mod, 'w', 'd'))
+    if (   try_cmd_1args(key, "w_keys_m", wrap_mod_selected_keyb, 'w')
+        || try_cmd_2args(key, "w_keys_u", wrap_mv_kb_mod, 'w', 'u')
+        || try_cmd_2args(key, "w_keys_d", wrap_mv_kb_mod, 'w', 'd'))
     {
         return 1;
     }
@@ -219,37 +259,37 @@ extern uint8_t meta_control(int key)
 {
     uint8_t ret = (key == get_available_keycode_to_action("quit"));
     if (   (0 == ret)
-        && (   try_cmd_0args('k', key, "winconf", toggle_winconfig)
-            || try_cmd_0args('k', key, "reload_conf", reload_interface_conf)
-            || try_cmd_0args('k', key, "save_conf", save_interface_conf)
-            || try_cmd_0args('k', key, "map_c", map_center)
-            || try_cmd_1args('k', key, "scrl_r", scroll_pad, '+')
-            || try_cmd_1args('k', key, "scrl_l", scroll_pad, '-')
-            || try_cmd_1args('k', key, "to_a_keywin", toggle_window, 'k')
-            || try_cmd_1args('k', key, "to_g_keywin", toggle_window, '0')
-            || try_cmd_1args('k', key, "to_wg_keywin", toggle_window, '1')
-            || try_cmd_1args('k', key, "to_wk_keywin", toggle_window, '2')
-            || try_cmd_1args('k', key, "to_mapwin", toggle_window, 'm')
-            || try_cmd_1args('k', key, "to_infowin", toggle_window, 'i')
-            || try_cmd_1args('k', key, "to_inv", toggle_window, 'c')
-            || try_cmd_1args('k', key, "to_logwin", toggle_window, 'l')
-            || try_cmd_1args('k', key, "cyc_win_f", cycle_active_win, 'f')
-            || try_cmd_1args('k', key, "cyc_win_b", cycle_active_win, 'b')
-            || try_cmd_1args('k', key, "g_keys_m", wrap_mod_selected_keyb, 'G')
-            || try_cmd_1args('k', key, "wg_keys_m", wrap_mod_selected_keyb, 'g')
-            || try_cmd_1args('k', key, "wk_keys_m", wrap_mod_selected_keyb, 'k')
-            || try_cmd_1args('k', key, "inv_u", nav_inventory, 'u')
-            || try_cmd_1args('k', key, "inv_d", nav_inventory, 'd')
-            || try_cmd_1args('k', key, "map_u", map_scroll, 'N')
-            || try_cmd_1args('k', key, "map_d", map_scroll, 'S')
-            || try_cmd_1args('k', key, "map_r", map_scroll, 'E')
-            || try_cmd_1args('k', key, "map_l", map_scroll, 'W')
-            || try_cmd_2args('k', key, "g_keys_u", wrap_mv_kb_mod, 'G', 'u')
-            || try_cmd_2args('k', key, "g_keys_d", wrap_mv_kb_mod, 'G', 'd')
-            || try_cmd_2args('k', key, "wg_keys_u", wrap_mv_kb_mod, 'g', 'u')
-            || try_cmd_2args('k', key, "wg_keys_d", wrap_mv_kb_mod, 'g', 'd')
-            || try_cmd_2args('k', key, "wk_keys_u", wrap_mv_kb_mod, 'k', 'u')
-            || try_cmd_2args('k', key, "wk_keys_d", wrap_mv_kb_mod, 'k', 'd')))
+        && (   try_cmd_0args(key, "winconf", toggle_winconfig)
+            || try_cmd_0args(key, "reload_conf", reload_interface_conf)
+            || try_cmd_0args(key, "save_conf", save_interface_conf)
+            || try_cmd_0args(key, "map_c", map_center)
+            || try_cmd_1args(key, "scrl_r", scroll_pad, '+')
+            || try_cmd_1args(key, "scrl_l", scroll_pad, '-')
+            || try_cmd_1args(key, "to_a_keywin", toggle_window, 'k')
+            || try_cmd_1args(key, "to_g_keywin", toggle_window, '0')
+            || try_cmd_1args(key, "to_wg_keywin", toggle_window, '1')
+            || try_cmd_1args(key, "to_wk_keywin", toggle_window, '2')
+            || try_cmd_1args(key, "to_mapwin", toggle_window, 'm')
+            || try_cmd_1args(key, "to_infowin", toggle_window, 'i')
+            || try_cmd_1args(key, "to_inv", toggle_window, 'c')
+            || try_cmd_1args(key, "to_logwin", toggle_window, 'l')
+            || try_cmd_1args(key, "cyc_win_f", cycle_active_win, 'f')
+            || try_cmd_1args(key, "cyc_win_b", cycle_active_win, 'b')
+            || try_cmd_1args(key, "g_keys_m", wrap_mod_selected_keyb, 'G')
+            || try_cmd_1args(key, "wg_keys_m", wrap_mod_selected_keyb, 'g')
+            || try_cmd_1args(key, "wk_keys_m", wrap_mod_selected_keyb, 'k')
+            || try_cmd_1args(key, "inv_u", nav_inventory, 'u')
+            || try_cmd_1args(key, "inv_d", nav_inventory, 'd')
+            || try_cmd_1args(key, "map_u", map_scroll, 'N')
+            || try_cmd_1args(key, "map_d", map_scroll, 'S')
+            || try_cmd_1args(key, "map_r", map_scroll, 'E')
+            || try_cmd_1args(key, "map_l", map_scroll, 'W')
+            || try_cmd_2args(key, "g_keys_u", wrap_mv_kb_mod, 'G', 'u')
+            || try_cmd_2args(key, "g_keys_d", wrap_mv_kb_mod, 'G', 'd')
+            || try_cmd_2args(key, "wg_keys_u", wrap_mv_kb_mod, 'g', 'u')
+            || try_cmd_2args(key, "wg_keys_d", wrap_mv_kb_mod, 'g', 'd')
+            || try_cmd_2args(key, "wk_keys_u", wrap_mv_kb_mod, 'k', 'u')
+            || try_cmd_2args(key, "wk_keys_d", wrap_mv_kb_mod, 'k', 'd')))
     {
         ;
     }
diff --git a/src/main.c b/src/main.c
index 88d90d2..86f8507 100644
--- a/src/main.c
+++ b/src/main.c
@@ -29,6 +29,7 @@
 #include "control.h" /* for control_by_id(), player_control(),
                       * get_available_keycode_to_action()
                       */
+#include "map_object_actions.h" /* for init_map_object_actions() */
 
 
 
@@ -37,8 +38,11 @@ int main(int argc, char *argv[])
     char * f_name = "main()";
     world.turn = 0;        /* Turns to 1 when map and objects are initalized. */
 
+    /* Initialize commands and map object actions. */
     init_command_db();
     set_cleanup_flag(CLEANUP_COMMAND_DB);
+    init_map_object_actions();
+    set_cleanup_flag(CLEANUP_MAPOBJACTS);
 
     /* Check for corrupted savefile / recordfile savings. */
     char * recordfile = "record";
diff --git a/src/main.h b/src/main.h
index e4d62e2..687dfc8 100644
--- a/src/main.h
+++ b/src/main.h
@@ -14,6 +14,7 @@ struct Win;
 struct Map;
 struct MapObjDef;
 struct MapObj;
+struct MapObjAct;
 
 
 
@@ -36,8 +37,8 @@ struct World
     struct MapObjDef * map_obj_defs;  /* Map object type definitions chain. */
     struct MapObj * map_objs;         /* Pointer to map objects chain start. */
     uint8_t inventory_select;         /* Player's inventory selection index. */
-    uint8_t old_inventory_select;     /* Temporarily stores for recordfile */
-} world;                              /* writing inventory selection index. */
+    struct MapObjAct * map_obj_acts;  /* Pointer to map object actions chain. */
+} world;
 
 
 
diff --git a/src/map.c b/src/map.c
index 45cd2e1..1615818 100644
--- a/src/map.c
+++ b/src/map.c
@@ -97,3 +97,15 @@ extern void map_center()
     struct Win * win_map   = get_win_by_id('m');
     win_map->center = player->pos;
 }
+
+
+
+extern uint8_t is_passable(struct Map * map, struct yx_uint16 pos)
+{
+    uint8_t passable = 0;
+    if (0 <= pos.x && pos.x < map->size.x && 0 <= pos.y && pos.y < map->size.y)
+    {
+        passable = (('.' == map->cells[pos.y * map->size.x + pos.x]));
+    }
+    return passable;
+}
diff --git a/src/map.h b/src/map.h
index 6a39e35..a1d607a 100644
--- a/src/map.h
+++ b/src/map.h
@@ -37,6 +37,11 @@ extern void map_scroll(char d);
 /* Center map on player. */
 extern void map_center();
 
+/* Check if coordinate pos on (or beyond) map is accessible to map object
+ * movement.
+ */
+extern uint8_t is_passable(struct Map * map, struct yx_uint16 pos);
+
 
 
 #endif
diff --git a/src/map_object_actions.c b/src/map_object_actions.c
index 9d1721e..1d3139f 100644
--- a/src/map_object_actions.c
+++ b/src/map_object_actions.c
@@ -1,25 +1,53 @@
 /* map_object_actions.c */
 
 #include "map_object_actions.h"
-#include <string.h> /* for strlen() */
+#include <stdint.h> /* for uint8_t */
+#include <string.h> /* for strlen(), strcmp() */
 #include "yx_uint16.h" /* for yx_uint16 struct, mv_yx_in_dir(),
                         * yx_uint16_cmp()
                         */
 #include "map_objects.h" /* for MapObj, MapObjDef structs, get_player(),
                           * set_object_position(), own_map_object()
                           */
-#include "misc.h" /* for update_log(), turn_over() */
-#include "map.h" /* for Map struct */
+#include "misc.h" /* for update_log(), try_malloc() */
+#include "map.h" /* for is_passable() */
 #include "main.h" /* for world global */
-#include "command_db.h" /* for get_command_id() */
+#include "readwrite.h" /* for try_fopen(), try_fclose(), get_linemax() */
+#include "rexit.h" /* for exit_err() */
 
 
 
+/* If "name" fits "moa"->name, set "moa"->func to "func". */
+static uint8_t try_func_name(struct MapObjAct * moa,
+                             char * name, void (* func) (struct MapObj *));
+
 /* One actor "wounds" another actor, decrementing his lifepoints and, if they
  * reach zero in the process, killing it. Generates appropriate log message.
  */
 static void actor_hits_actor(struct MapObj * hitter, struct MapObj * hitted);
 
+/* Bonus stuff to actor_*() to happen if actor==player. Mostly writing of log
+ * messages; _pick and _drop also decrement world.inventory_select by 1 if >0.
+ */
+static void playerbonus_wait();
+static void playerbonus_move(char d, uint8_t passable);
+static void playerbonus_drop(uint8_t owns_none);
+static void playerbonus_pick(uint8_t picked);
+static void playerbonus_use(uint8_t no_object, uint8_t wrong_object);
+
+
+
+static uint8_t try_func_name(struct MapObjAct * moa,
+                             char * name, void (* func) (struct MapObj *))
+{
+    if (0 == strcmp(moa->name, name))
+    {
+        moa->func = func;
+        return 1;
+    }
+    return 0;
+}
+
 
 
 static void actor_hits_actor(struct MapObj * hitter, struct MapObj * hitted)
@@ -64,189 +92,262 @@ static void actor_hits_actor(struct MapObj * hitter, struct MapObj * hitted)
 
 
 
-extern uint8_t move_actor(struct MapObj * actor, char d)
+static void playerbonus_wait()
 {
-    struct yx_uint16 target = mv_yx_in_dir(d, actor->pos);
-    struct MapObj * other_actor;
-    for (other_actor = world.map_objs;
-         other_actor != 0;
-         other_actor = other_actor->next)
-    {
-        if (0 == other_actor->lifepoints || other_actor == actor)
-        {
-            continue;
-        }
-        if (yx_uint16_cmp(&target, &other_actor->pos))
-        {
-            actor_hits_actor(actor, other_actor);
-            return 2;
-        }
-    }
-    if (is_passable(world.map, target))
-    {
-        set_object_position(actor, target);
-        return 0;
-    }
-    return 1;
+        update_log("\nYou wait.");
 }
 
 
 
-extern void move_player(char d)
+static void playerbonus_move(char d, uint8_t passable)
 {
-    char * dsc_dir;
-    char * action_dsc_prototype = "player_";
-    uint8_t len_action_dsc_prototype = strlen(action_dsc_prototype);
-    char action_dsc[len_action_dsc_prototype + 2];
-    memcpy(action_dsc, action_dsc_prototype, len_action_dsc_prototype);
-    if      ('N' == d)
-    {
-        dsc_dir = "north";
-        action_dsc[len_action_dsc_prototype] = 'u';
-    }
-    else if ('E' == d)
+    char * dsc_dir = "north";
+    if      ('E' == d)
     {
         dsc_dir = "east" ;
-        action_dsc[len_action_dsc_prototype] = 'r';
     }
     else if ('S' == d)
     {
         dsc_dir = "south";
-        action_dsc[len_action_dsc_prototype] = 'd';
     }
     else if ('W' == d)
     {
         dsc_dir = "west" ;
-        action_dsc[len_action_dsc_prototype] = 'l';
     }
-    action_dsc[len_action_dsc_prototype + 1] = '\0';
-    uint8_t res = move_actor(get_player(), d);
-    if (1 >= res)
+    char * dsc_move = "You move ";
+    if (0 == passable)
     {
-        char * dsc_move = "You fail to move ";
-        if   (0 == res)
-        {
-            dsc_move = "You move ";
-        }
-        char msg[strlen(dsc_move) + strlen (dsc_dir) + 3];
-        sprintf(msg, "\n%s%s.", dsc_move, dsc_dir);
-        update_log(msg);
+        dsc_move = "You fail to move ";
     }
-    turn_over(get_command_id(action_dsc));
+    char msg[strlen(dsc_move) + strlen (dsc_dir) + 3];
+    sprintf(msg, "\n%s%s.", dsc_move, dsc_dir);
+    update_log(msg);
 }
 
 
 
-extern void player_wait()
+static void playerbonus_drop(uint8_t owns_none)
 {
-    update_log("\nYou wait.");
-    turn_over(get_command_id("wait"));
+    if (0 != owns_none)
+    {
+        update_log("\nYou try to drop an object, but you own none.");
+    }
+    else
+    {
+        update_log("\nYou drop an object.");
+        if (0 < world.inventory_select)
+        {
+            world.inventory_select--;
+        }
+    }
 }
 
 
 
-extern char is_passable(struct Map * map, struct yx_uint16 pos)
+static void playerbonus_pick(uint8_t picked)
 {
-    uint8_t passable = 0;
-    if (0 <= pos.x && pos.x < map->size.x && 0 <= pos.y && pos.y < map->size.y)
+    if (picked)
     {
-        passable = (('.' == map->cells[pos.y * map->size.x + pos.x]));
+        update_log("\nYou pick up an object.");
+    }
+    else
+    {
+        update_log("\nYou try to pick up an object, but there is none.");
     }
-    return passable;
 }
 
 
 
-extern void player_drop()
+static void playerbonus_use(uint8_t no_object, uint8_t wrong_object)
 {
-    struct MapObj * player = get_player();
-    if (NULL == player->owns)
+    if      (no_object)
     {
-        update_log("\nYou try to drop an object, but you own none.");
-        world.old_inventory_select = 0;
+        update_log("\nYou try to use an object, but you own none.");
+    }
+    else if (wrong_object)
+    {
+        update_log("\nYou try to use this object, but fail.");
     }
     else
     {
-        world.old_inventory_select = world.inventory_select;
-        struct MapObj * owned = player->owns;
-        uint8_t i = 0;
-        for (; i != world.inventory_select; i++, owned = owned->next);
+        update_log("\nYou consume MAGIC MEAT.");
         if (0 < world.inventory_select)
         {
             world.inventory_select--;
         }
-        own_map_object(&world.map_objs, &player->owns, owned->id);
-        update_log("\nYou drop an object.");
     }
-    turn_over(get_command_id("drop"));
 }
 
 
 
-extern void player_pick()
+extern void init_map_object_actions()
 {
-    struct MapObj * player = get_player();
-    struct MapObj * picked;
-    for (picked = world.map_objs; NULL != picked; picked = picked->next)
+    char * f_name = "init_map_object_actions()";
+
+    char * path = "config/map_object_actions";
+    FILE * file = try_fopen(path, "r", f_name);
+    uint16_t linemax = get_linemax(file, f_name);
+    char line[linemax + 1];
+
+    struct MapObjAct ** moa_ptr_ptr = &world.map_obj_acts;
+    char * delim = " ";
+    while (fgets(line, linemax + 1, file))
     {
-        if (picked != player && yx_uint16_cmp(&picked->pos, &player->pos))
+        if ('\n' == line[0] || 0 == line[0])
         {
             break;
         }
+        struct MapObjAct * moa = try_malloc(sizeof(struct MapObjAct), f_name);
+        moa->id = atoi(strtok(line, delim));
+        moa->effort = atoi(strtok(NULL, delim));
+        char * funcname = strtok(NULL, "\n");
+        uint8_t len_name = strlen(funcname) + 1;
+        moa->name = try_malloc(len_name, f_name);
+        memcpy(moa->name, funcname, len_name);
+        if (!(   try_func_name(moa, "move", actor_move)
+              || try_func_name(moa, "pick_up", actor_pick)
+              || try_func_name(moa, "drop", actor_drop)
+              || try_func_name(moa, "use", actor_use)))
+        {
+            moa->func = actor_wait;
+        }
+        moa->next = NULL;
+        * moa_ptr_ptr = moa;
+        moa_ptr_ptr = &moa->next;
     }
-    if (NULL == picked)
+    try_fclose(file, f_name);
+}
+
+
+
+extern void free_map_object_actions(struct MapObjAct * moa)
+{
+    if (NULL == moa)
     {
-        update_log("\nYou try to pick up an object, but there is none.");
+        return;
     }
-    else
+    free(moa->name);
+    free_map_object_actions(moa->next);
+    free(moa);
+}
+
+
+
+extern void actor_wait(struct MapObj * mo)
+{
+    if (mo == get_player())
     {
-        own_map_object(&player->owns, &world.map_objs, picked->id);
-        set_object_position(picked, player->pos);
-        update_log("\nYou pick up an object.");
+        playerbonus_wait();
     }
-    turn_over(get_command_id("pick"));
 }
 
 
 
-extern void player_use()
+extern void actor_move(struct MapObj * mo)
 {
-    struct MapObj * player = get_player();
-    if (NULL == player->owns)
+    char d = mo->arg;
+    struct yx_uint16 target = mv_yx_in_dir(d, mo->pos);
+    struct MapObj * other_mo;
+    for (other_mo = world.map_objs; other_mo != 0; other_mo = other_mo->next)
     {
-        update_log("\nYou try to use an object, but you own none.");
-        world.old_inventory_select = 0;
+        if (0 == other_mo->lifepoints || other_mo == mo)
+        {
+            continue;
+        }
+        if (yx_uint16_cmp(&target, &other_mo->pos))
+        {
+            actor_hits_actor(mo, other_mo);
+            return;
+        }
     }
-    else
+    uint8_t passable = is_passable(world.map, target);
+    if (passable)
+    {
+        set_object_position(mo, target);
+    }
+    if (mo == get_player())
+    {
+        playerbonus_move(d, passable);
+    }
+}
+
+
+
+extern void actor_drop(struct MapObj * mo)
+{
+    uint8_t owns_none = (NULL == mo->owns);
+    if (!owns_none)
     {
+        uint8_t select = mo->arg;
+        struct MapObj * owned = mo->owns;
         uint8_t i = 0;
-        struct MapObj * selected = player->owns;
-        for (; i != world.inventory_select; i++, selected = selected->next);
+        for (; i != select; i++, owned = owned->next);
+        own_map_object(&world.map_objs, &mo->owns, owned->id);
+    }
+    if (mo == get_player())
+    {
+        playerbonus_drop(owns_none);
+    }
+}
+
+
+
+extern void actor_pick(struct MapObj * mo)
+{
+    struct MapObj * picked;
+    for (picked = world.map_objs; NULL != picked; picked = picked->next)
+    {
+        if (picked != mo && yx_uint16_cmp(&picked->pos, &mo->pos))
+        {
+            break;
+        }
+    }
+    if (NULL != picked)
+    {
+        own_map_object(&mo->owns, &world.map_objs, picked->id);
+        set_object_position(picked, mo->pos);
+    }
+    if (mo == get_player())
+    {
+        playerbonus_pick(NULL != picked);
+    }
+}
+
+
+
+extern void actor_use(struct MapObj * mo)
+{
+    uint8_t wrong_object = 1;
+    uint8_t no_object = (NULL == mo->owns);
+    if (!no_object)
+    {
+        uint8_t select = mo->arg;
+        uint8_t i = 0;
+        struct MapObj * selected = mo->owns;
+        for (; i != select; i++, selected = selected->next);
         struct MapObjDef * mod = get_map_object_def(selected->type);
         if (!strcmp("MAGIC MEAT", mod->name))
         {
+            wrong_object = 0;
             struct MapObj * next = selected->next;
             free(selected);
-            if (0 < world.inventory_select)
+            if (0 < select)
             {
-                world.old_inventory_select = world.inventory_select;
-                world.inventory_select--;
-                for (i = 0, selected = player->owns;
-                     i != world.inventory_select;
+                select--;
+                for (i = 0, selected = mo->owns;
+                     i != select;
                      i++, selected = selected->next);
                 selected->next = next;
             }
             else
             {
-                player->owns = next;
+                mo->owns = next;
             }
-            player->lifepoints++;
-            update_log("\nYou consume MAGIC MEAT.");
-            }
-        else
-        {
-            update_log("\nYou try to use this object, but fail.");
+            mo->lifepoints++;
         }
     }
-    turn_over(get_command_id("use"));
+    if (mo == get_player())
+    {
+        playerbonus_use(no_object, wrong_object);
+    }
 }
diff --git a/src/map_object_actions.h b/src/map_object_actions.h
index 7cc9843..e981228 100644
--- a/src/map_object_actions.h
+++ b/src/map_object_actions.h
@@ -1,48 +1,55 @@
 /* map_object_actions.h
  *
- * Routines for the actions available to map objects.
+ * Actions that can be performed my map objects / "actors". Note that apart
+ * from the consequences described below, each action may also trigger log
+ * messages and other minor stuff if the actor is equal to the player.
  */
 
 #ifndef MAP_OBJECT_ACTIONS_H
 #define MAP_OBJECT_ACTIONS_H
 
-#include "yx_uint16.h" /* for yx_uint16 coordinates */
-struct Map;
+#include <stdint.h> /* for uint8_t */
 struct MapObj;
 
 
 
-/* Try to move "actor" one step in direction "d" (where east is 'E', north 'N'
- * etc.) and handle the consequences: either the move succeeds, or another actor
- * is encountered and hit (which leads to its lifepoint decreasing by one and
- * potentially its death), or the target square is not passable, the move fails.
- */
-extern uint8_t move_actor(struct MapObj * actor, char d);
+struct MapObjAct
+{
+    struct MapObjAct * next;
+    uint8_t id;                      /* unique id of map object action */
+    char * name;                     /* human-readable identifier */
+    uint8_t effort;                  /* how many turn the action takes */
+    void (* func) (struct MapObj *); /* function called after .effort turns */
+};
 
-/* Wrapper for using move_actor() on the MapObj representing the player; updates
- * the game log with appropriate messages on the move attempt and its results;
- * turns over to turn_over() when finished.
- */
-extern void move_player(char d);
 
-/* Make player wait one turn, i.e. only update_log with a "you wait" message
- * and turn control over to the enemy.
- */
-extern void player_wait();
 
-/* Check if coordinate pos on (or beyond) map is accessible to map object
- * movement.
+/* Init MapObjAct chain at world.map_obj_acts from config/map_object_actions. */
+extern void init_map_object_actions();
+
+/* Free MapObjAct * chain starting at "moa". */
+extern void free_map_object_actions(struct MapObjAct * moa);
+
+/* Actor "mo" does nothing. */
+extern void actor_wait(struct MapObj * mo);
+
+/* Actor "mo" tries to move one step in direction described by char mo->arg
+ * (where east is 'E', north 'N') etc. Move either succeeds, or another actor is
+ * encountered and hit (which leads ot its lifepoint decreasing by one and
+ * eventually death), or the move fails due to an impassable target square.
  */
-extern char is_passable(struct Map * map, struct yx_uint16 pos);
+extern void actor_move(struct MapObj * mo);
 
-/* Make player drop to ground map ojbect indexed by world.inventory_select. */
-extern void player_drop();
+/* Actor "mo" tries to drop from inventory object indexed by number mo->args. */
+extern void actor_drop(struct MapObj * mo);
 
-/* Make player pick up map object from ground. */
-extern void player_pick();
+/* Actor "mo" tries to pick up object from ground into its inventory. */
+extern void actor_pick(struct MapObj * mo);
 
-/* Make player use object indexed by world.inventory_select. */
-extern void player_use();
+/* Actor "mo" tries to use inventory object indexed by number mo->args.
+ * (Currently the only valid use is consuming "MAGIC MEAT".
+ */
+extern void actor_use(struct MapObj * mo);
 
 
 
diff --git a/src/map_objects.c b/src/map_objects.c
index d114c5b..0107aff 100644
--- a/src/map_objects.c
+++ b/src/map_objects.c
@@ -31,8 +31,9 @@ static void write_map_object(FILE * file, struct MapObj * mo)
     for (; NULL != mo_ptr; mo_ptr = mo_ptr->next, i++);
     uint8_t size = 3+1 + 3+1 + 3+1 + 5+1 + 5 + ((1+3)*i) + 1 + 1;
     char line[size];
-    sprintf(line, "%d %d %d %d %d",
-                  mo->id, mo->type, mo->lifepoints, mo->pos.y, mo->pos.x);
+    sprintf(line, "%d %d %d %d %d %d %d %d",
+                  mo->id, mo->type, mo->lifepoints, mo->pos.y, mo->pos.x,
+                  mo->progress, mo->command, mo->arg);
     for (mo_ptr = mo->owns; NULL != mo_ptr; mo_ptr = mo_ptr->next)
     {
         sprintf(line + strlen(line), " %d", mo_ptr->id);
@@ -130,13 +131,16 @@ extern void read_map_objects(FILE * file, char * line, int linemax)
     exit_err(-1 == fgetpos(file, &pos), f_name);
     while (try_fgets(line, linemax + 1, file, f_name))
     {
-        mo = malloc(sizeof(struct MapObj));
+        mo = try_malloc(sizeof(struct MapObj), f_name);
         mo->next       = NULL;
         mo->id         = atoi(strtok(line, delim));
         mo->type       = atoi(strtok(NULL, delim));
         mo->lifepoints = atoi(strtok(NULL, delim));
         mo->pos.y      = atoi(strtok(NULL, delim));
         mo->pos.x      = atoi(strtok(NULL, delim));
+        mo->progress   = atoi(strtok(NULL, delim));;
+        mo->command    = atoi(strtok(NULL, delim));;
+        mo->arg        = atoi(strtok(NULL, delim));;
         mo->owns       = NULL;
         if (mo->id > world.map_obj_count)
         {
@@ -149,10 +153,11 @@ extern void read_map_objects(FILE * file, char * line, int linemax)
     while (try_fgets(line, linemax + 1, file, f_name))
     {
         uint8_t id = atoi(strtok(line, delim));
-        strtok(NULL, delim);
-        strtok(NULL, delim);
-        strtok(NULL, delim);
-        strtok(NULL, delim);
+        uint8_t i;
+        for (i = 0; i < 7; i++)
+        {
+            strtok(NULL, delim);
+        }
         char * owned = strtok(NULL, "\n");
         if (NULL != owned)
         {
@@ -199,6 +204,9 @@ extern void add_map_object(uint8_t type)
             break;
         }
     }
+    mo->progress = 0;
+    mo->command = 0;
+    mo->arg = 0;
     mo->owns = NULL;
     mo->next = NULL;
     struct MapObj ** last_ptr_ptr = &world.map_objs;
diff --git a/src/map_objects.h b/src/map_objects.h
index 6342f4b..2bd1bec 100644
--- a/src/map_objects.h
+++ b/src/map_objects.h
@@ -21,6 +21,9 @@ struct MapObj
     uint8_t type;                /* ID of appropriate map object definition */
     uint8_t lifepoints;          /* 0: object is inanimate; >0: hitpoints */
     struct yx_uint16 pos;        /* coordinate on map */
+    uint8_t command;             /* command map object tries to realize now*/
+    uint8_t arg;                 /* optional field for command argument */
+    uint8_t progress;            /* turns already passed to realize .command */
 };
 
 struct MapObjDef
diff --git a/src/misc.c b/src/misc.c
index 48ced07..4e6527d 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -12,8 +12,8 @@
 #include "map_objects.h" /* for struct MapObj, get_player(), read_map_objects(),
                           * write_map_objects()
                           */
-#include "map_object_actions.h" /* for is_passable(), move_actor() */
-#include "map.h" /* for Map struct */
+#include "map_object_actions.h" /* for struct MapObjAct */
+#include "map.h" /* for Map struct, is_passable() */
 #include "main.h" /* for world global */
 #include "yx_uint16.h" /* for yx_uint16 struct */
 #include "rrand.h" /* for rrand(), rrand_seed() */
@@ -225,21 +225,48 @@ extern void turn_over(char action)
         if (   is_command_id_shortdsc(action, "drop")
             || is_command_id_shortdsc(action, "use"))
         {
-            uint8_t inventory_select = world.old_inventory_select;
-            exit_err(write_uint8(inventory_select, file_new), err_write);
+            exit_err(write_uint8(world.inventory_select, file_new), err_write);
         }
         try_fclose_unlink_rename(file_new, recordfile_tmp, recordfile, f_name);
     }
-    world.turn++;
     rrand_seed(world.seed * world.turn);
-    struct MapObj * monster;
-    for (monster = world.map_objs; monster != 0; monster = monster->next)
+
+    struct MapObj * player = get_player();
+    struct MapObj * map_object = player;
+    uint8_t first_round = 1;
+    while (0 < player->lifepoints)
     {
-        if (0 < monster->lifepoints && 0 != monster->id)
+        if (NULL == map_object)
         {
-            char * sel = "\0NSEW";
-            move_actor(monster, sel[rrand() % 5]);
+            world.turn++;
+            map_object = world.map_objs;
+        }
+        if (0 < map_object->lifepoints)             /* map_object is animate. */
+        {
+            if (0 == first_round && 0 == map_object->progress)
+            {
+                if (map_object == player)
+                {
+                    break;
+                }
+                char * sel = "NSEW";
+                map_object->command = 1;
+                map_object->arg = sel[rrand() % 4];
+            }
+            first_round = 0;
+            map_object->progress++;
+            struct MapObjAct * moa = world.map_obj_acts;
+            while (moa->id != map_object->command)
+            {
+                moa = moa->next;
+            }
+            if (map_object->progress == moa->effort)
+            {
+                moa->func(map_object);
+                map_object->progress = 0;
+            }
         }
+        map_object = map_object->next;
     }
 }
 
diff --git a/src/rexit.c b/src/rexit.c
index 84664a8..0b673af 100644
--- a/src/rexit.c
+++ b/src/rexit.c
@@ -13,6 +13,7 @@
 #include "windows.h" /* for Win struct, free_win(), free_winmeta() */
 #include "map_objects.h" /* for free_map_objects, free_map_object_defs() */
 #include "misc.h" /* for unload_interface_conf() */
+#include "map_object_actions.h" /* for free_map_object_actions() */
 
 
 
@@ -44,13 +45,17 @@ static void cleanup()
     {
         free_command_db();
     }
+    if (cleanup_flags & CLEANUP_MAPOBJACTS)
+    {
+        free_map_object_actions(world.map_obj_acts);
+    }
     if (cleanup_flags & CLEANUP_MAP)
     {
         free(world.map->cells);
     }
     if (cleanup_flags & CLEANUP_INTERFACE_CONF)
     {
-        unload_interface_conf(/*&world*/);
+        unload_interface_conf();
     }
     if (cleanup_flags & CLEANUP_WIN_META)
     {
diff --git a/src/rexit.h b/src/rexit.h
index 47a9993..459fcb9 100644
--- a/src/rexit.h
+++ b/src/rexit.h
@@ -23,10 +23,11 @@ enum cleanup_flag
     CLEANUP_MAP             = 0x0002,
     CLEANUP_LOG             = 0x0004,
     CLEANUP_COMMAND_DB      = 0x0008,
-    CLEANUP_MAP_OBJECTS     = 0x0010,
-    CLEANUP_MAP_OBJECT_DEFS = 0x0020,
-    CLEANUP_WIN_META        = 0x0040,
-    CLEANUP_INTERFACE_CONF  = 0x0080
+    CLEANUP_MAPOBJACTS      = 0x0010,
+    CLEANUP_MAP_OBJECTS     = 0x0020,
+    CLEANUP_MAP_OBJECT_DEFS = 0x0040,
+    CLEANUP_WIN_META        = 0x0080,
+    CLEANUP_INTERFACE_CONF  = 0x0100
 };
 extern void set_cleanup_flag(enum cleanup_flag flag);