+++ /dev/null
-/* map_object_actions.c */
-
-#include "map_object_actions.h"
-#include <stdint.h> /* for uint8_t, uint16_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(), try_malloc() */
-#include "map.h" /* for is_passable() */
-#include "main.h" /* for world global */
-#include "readwrite.h" /* for try_fopen(), try_fclose(), textfile_sizes() */
-#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_sel 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)
-{
- struct MapObjDef * mod_hitter = get_map_object_def(hitter->type);
- struct MapObjDef * mod_hitted = get_map_object_def(hitted->type);
- struct MapObj * player = get_player();
- char * msg1 = "You";
- char * msg2 = "wound";
- char * msg3 = "you";
- if (player != hitter)
- {
- msg1 = mod_hitter->name;
- msg2 = "wounds";
- }
- if (player != hitted)
- {
- msg3 = mod_hitted->name;
- }
- uint8_t len = 1 + strlen(msg1) + 1 + strlen(msg2) + 1 + strlen(msg3) + 2;
- char msg[len];
- sprintf(msg, "\n%s %s %s.", msg1, msg2, msg3);
- update_log(msg);
- hitted->lifepoints--;
- if (0 == hitted->lifepoints)
- {
- hitted->type = mod_hitted->corpse_id;
- if (player == hitted)
- {
- update_log(" You die.");
- return;
- }
- update_log(" It dies.");
- if (player == hitter)
- {
- world.score = world.score + mod_hitted->lifepoints;
- }
- }
-}
-
-
-
-static void playerbonus_wait()
-{
- update_log("\nYou wait.");
-}
-
-
-
-static void playerbonus_move(char d, uint8_t passable)
-{
- char * dsc_dir = "north";
- if ('E' == d)
- {
- dsc_dir = "east" ;
- }
- else if ('S' == d)
- {
- dsc_dir = "south";
- }
- else if ('W' == d)
- {
- dsc_dir = "west" ;
- }
- char * dsc_move = "You move ";
- if (0 == passable)
- {
- dsc_move = "You fail to move ";
- }
- char msg[strlen(dsc_move) + strlen (dsc_dir) + 3];
- sprintf(msg, "\n%s%s.", dsc_move, dsc_dir);
- update_log(msg);
-}
-
-
-
-static void playerbonus_drop(uint8_t owns_none)
-{
- if (0 != owns_none)
- {
- update_log("\nYou try to drop an object, but you own none.");
- return;
- }
- update_log("\nYou drop an object.");
- world.inventory_sel = world.inventory_sel - (0 < world.inventory_sel);
-}
-
-
-
-static void playerbonus_pick(uint8_t picked)
-{
- if (picked)
- {
- update_log("\nYou pick up an object.");
- return;
- }
- update_log("\nYou try to pick up an object, but there is none.");
-}
-
-
-
-static void playerbonus_use(uint8_t no_object, uint8_t wrong_object)
-{
- if (no_object)
- {
- update_log("\nYou try to use an object, but you own none.");
- return;
- }
- else if (wrong_object)
- {
- update_log("\nYou try to use this object, but fail.");
- return;
- }
- update_log("\nYou consume MAGIC MEAT.");
- world.inventory_sel = world.inventory_sel - (0 < world.inventory_sel);
-}
-
-
-
-extern void init_map_object_actions()
-{
- char * f_name = "init_map_object_actions()";
- char * path = "config/map_object_actions";
- FILE * file = try_fopen(path, "r", f_name);
- uint16_t linemax = textfile_sizes(file, NULL);
- char line[linemax + 1];
- struct MapObjAct ** moa_ptr_ptr = &world.map_obj_acts;
- char * delim = " ";
- while (fgets(line, linemax + 1, file))
- {
- 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;
- }
- try_fclose(file, f_name);
-}
-
-
-
-extern void free_map_object_actions(struct MapObjAct * moa)
-{
- if (NULL == moa)
- {
- return;
- }
- free(moa->name);
- free_map_object_actions(moa->next);
- free(moa);
-}
-
-
-
-extern 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;
-}
-
-
-
-extern void actor_wait(struct MapObj * mo)
-{
- if (mo == get_player())
- {
- playerbonus_wait();
- }
-}
-
-
-
-extern void actor_move(struct MapObj * mo)
-{
- 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)
- {
- if (0 == other_mo->lifepoints || other_mo == mo)
- {
- continue;
- }
- if (yx_uint16_cmp(&target, &other_mo->pos))
- {
- actor_hits_actor(mo, other_mo);
- return;
- }
- }
- 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;
- 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 < select)
- {
- select--;
- selected = mo->owns;
- for (i = 0; i != select; i++, selected = selected->next);
- selected->next = next;
- }
- else
- {
- mo->owns = next;
- }
- mo->lifepoints++;
- }
- }
- if (mo == get_player())
- {
- playerbonus_use(no_object, wrong_object);
- }
-}