diff options
Diffstat (limited to 'src/map/magic-stmt.cpp')
| -rw-r--r-- | src/map/magic-stmt.cpp | 1592 |
1 files changed, 1592 insertions, 0 deletions
diff --git a/src/map/magic-stmt.cpp b/src/map/magic-stmt.cpp new file mode 100644 index 0000000..5dd51d7 --- /dev/null +++ b/src/map/magic-stmt.cpp @@ -0,0 +1,1592 @@ +#include "magic-interpreter.hpp" +#include "magic-expr.hpp" +#include "magic-expr-eval.hpp" +#include "magic-interpreter-aux.hpp" + +#define INVISIBLE_NPC 127 /* used for local spell effects */ + +//#define DEBUG + +#ifdef DEBUG +static void print_val (val_t * v) +{ + switch (v->ty) + { + case TY_UNDEF: + fprintf (stderr, "UNDEF"); + break; + case TY_INT: + fprintf (stderr, "%d", v->v.v_int); + break; + case TY_DIR: + fprintf (stderr, "dir%d", v->v.v_int); + break; + case TY_STRING: + fprintf (stderr, "`%s'", v->v.v_string); + break; + default: + fprintf (stderr, "ty%d", v->ty); + break; + } +} + +static void dump_env (env_t * env) +{ + int i; + for (i = 0; i < env->base_env->vars_nr; i++) + { + val_t *v = &env->vars[i]; + val_t *bv = &env->base_env->vars[i]; + + fprintf (stderr, "%02x %30s ", i, env->base_env->var_name[i]); + print_val (v); + fprintf (stderr, "\t("); + print_val (bv); + fprintf (stderr, ")\n"); + } +} +#endif + +static void clear_activation_record (cont_activation_record_t * ar) +{ + switch (ar->ty) + { + case CONT_STACK_FOREACH: + free (ar->c.c_foreach.entities); + break; + case CONT_STACK_PROC: + free (ar->c.c_proc.old_actuals); + break; + } +} + +static void +invocation_timer_callback (timer_id UNUSED, tick_t UNUSED, custom_id_t id, custom_data_t data) +{ + invocation_t *invocation = (invocation_t *) map_id2bl (id); + + if (invocation) + { + invocation->timer = 0; + spell_execute (invocation); + } +} + +static void clear_stack (invocation_t * invocation) +{ + int i; + + for (i = 0; i < invocation->stack_size; i++) + clear_activation_record (&invocation->stack[i]); + + invocation->stack_size = 0; +} + +void spell_free_invocation (invocation_t * invocation) +{ + if (invocation->status_change_refs) + { + free (invocation->status_change_refs); + /* The following cleanup shouldn't be necessary, but I've added it to help tracking a certain bug */ + invocation->status_change_refs = NULL; + invocation->status_change_refs_nr = 0; + } + + if (invocation->flags & INVOCATION_FLAG_BOUND) + { + entity_t *e = map_id2bl (invocation->subject); + if (e && e->type == BL_PC) + spell_unbind ((character_t *) e, invocation); + } + + clear_stack (invocation); + + if (invocation->timer) + delete_timer (invocation->timer, invocation_timer_callback); + + magic_free_env (invocation->env); + + map_delblock (&invocation->bl); + map_delobject (invocation->bl.id, BL_SPELL); // also frees the object +// free(invocation); +} + +static void +char_set_weapon_icon (character_t * subject, int count, int icon, int look) +{ + const int old_icon = subject->attack_spell_icon_override; + + subject->attack_spell_icon_override = icon; + subject->attack_spell_look_override = look; + + if (old_icon && old_icon != icon) + clif_status_change (&subject->bl, old_icon, 0); + + clif_fixpcpos (subject); + if (count) + { + clif_changelook (&subject->bl, LOOK_WEAPON, look); + if (icon) + clif_status_change (&subject->bl, icon, 1); + } + else + { + /* Set it to `normal' */ + clif_changelook (&subject->bl, LOOK_WEAPON, subject->status.weapon); + } +} + +static void char_set_attack_info (character_t * subject, int speed, int range) +{ + subject->attack_spell_delay = speed; + subject->attack_spell_range = range; + + if (speed == 0) + { + pc_calcstatus (subject, 1); + clif_updatestatus (subject, SP_ASPD); + clif_updatestatus (subject, SP_ATTACKRANGE); + } + else + { + subject->aspd = speed; + clif_updatestatus (subject, SP_ASPD); + clif_updatestatus (subject, SP_ATTACKRANGE); + } +} + +void magic_stop_completely (character_t * c) +{ + int i; + // Zap all status change references to spells + for (i = 0; i < MAX_STATUSCHANGE; i++) + c->sc_data[i].spell_invocation = 0; + + while (c->active_spells) + spell_free_invocation (c->active_spells); + + if (c->attack_spell_override) + { + invocation_t *attack_spell = + (invocation_t *) map_id2bl (c->attack_spell_override); + if (attack_spell) + spell_free_invocation (attack_spell); + c->attack_spell_override = 0; + char_set_weapon_icon (c, 0, 0, 0); + char_set_attack_info (c, 0, 0); + } +} + +/* Spell execution has finished normally or we have been notified by a finished skill timer */ +static void try_to_finish_invocation (invocation_t * invocation) +{ + if (invocation->status_change_refs_nr == 0 && !invocation->current_effect) + { + if (invocation->end_effect) + { + clear_stack (invocation); + invocation->current_effect = invocation->end_effect; + invocation->end_effect = NULL; + spell_execute (invocation); + } + else + spell_free_invocation (invocation); + } +} + +static int trigger_spell (int subject, int spell) +{ + invocation_t *invocation = (invocation_t *) map_id2bl (spell); + + if (!invocation) + return 0; + + invocation = spell_clone_effect (invocation); + + spell_bind ((character_t *) map_id2bl (subject), invocation); + magic_clear_var (&invocation->env->vars[VAR_CASTER]); + invocation->env->vars[VAR_CASTER].ty = TY_ENTITY; + invocation->env->vars[VAR_CASTER].v.v_int = subject; + + return invocation->bl.id; +} + +static void entity_warp (entity_t * target, int destm, int destx, int desty); + +static void char_update (character_t * character) +{ + entity_warp ((entity_t *) character, character->bl.m, character->bl.x, + character->bl.y); +} + +static void timer_callback_effect (timer_id UNUSED, tick_t UNUSED, custom_id_t id, custom_data_t data) +{ + entity_t *target = map_id2bl (id); + if (target) + clif_misceffect (target, data); +} + +static void entity_effect (entity_t * entity, int effect_nr, int delay) +{ + add_timer (gettick () + delay, + &timer_callback_effect, entity->id, effect_nr); +} + +void magic_unshroud (character_t * other_char) +{ + other_char->state.shroud_active = 0; + // Now warp the caster out of and back into here to refresh everyone's display + char_update (other_char); + clif_displaymessage (other_char->fd, "Your shroud has been dispelled!"); +// entity_effect(&other_char->bl, MAGIC_EFFECT_REVEAL); +} + +static void +timer_callback_effect_npc_delete (timer_id UNUSED, tick_t odelay, + custom_id_t npc_id, custom_data_t UNUSED) +{ + struct npc_data *effect_npc = (struct npc_data *) map_id2bl (npc_id); + npc_free (effect_npc); +} + +static struct npc_data *local_spell_effect (int m, int x, int y, int effect, + int tdelay) +{ + int delay = 30000; /* 1 minute should be enough for all interesting spell effects, I hope */ + struct npc_data *effect_npc = npc_spawn_text (m, x, y, + INVISIBLE_NPC, "", "?"); + int effect_npc_id = effect_npc->bl.id; + + entity_effect (&effect_npc->bl, effect, tdelay); + add_timer (gettick () + delay, + timer_callback_effect_npc_delete, effect_npc_id, 0); + + return effect_npc; +} + +static int op_sfx (env_t * env, int args_nr, val_t * args) +{ + int delay = ARGINT (2); + + if (TY (0) == TY_ENTITY) + { + entity_effect (ARGENTITY (0), ARGINT (1), delay); + } + else if (TY (0) == TY_LOCATION) + { + local_spell_effect (ARGLOCATION (0).m, + ARGLOCATION (0).x, + ARGLOCATION (0).y, ARGINT (1), delay); + } + else + return 1; + + return 0; +} + +static int op_instaheal (env_t * env, int args_nr, val_t * args) +{ + entity_t *caster = (VAR (VAR_CASTER).ty == TY_ENTITY) + ? map_id2bl (VAR (VAR_CASTER).v.v_int) : NULL; + entity_t *subject = ARGENTITY (0); + if (!caster) + caster = subject; + + if (caster->type == BL_PC && subject->type == BL_PC) + { + character_t *caster_pc = (character_t *) caster; + character_t *subject_pc = (character_t *) subject; + MAP_LOG_PC (caster_pc, "SPELLHEAL-INSTA PC%d FOR %d", + subject_pc->status.char_id, ARGINT (1)); + } + + battle_heal (caster, subject, ARGINT (1), ARGINT (2), 0); + return 0; +} + +static int op_itemheal (env_t * env, int args_nr, val_t * args) +{ + entity_t *subject = ARGENTITY (0); + if (subject->type == BL_PC) + { + pc_itemheal ((struct map_session_data *) subject, + ARGINT (1), ARGINT (2)); + } + else + return op_instaheal (env, args_nr, args); + + return 0; +} + +#define SHROUD_HIDE_NAME_TALKING_FLAG (1 << 0) +#define SHROUD_DISAPPEAR_ON_PICKUP_FLAG (1 << 1) +#define SHROUD_DISAPPEAR_ON_TALK_FLAG (1 << 2) + +#define ARGCHAR(n) (ARGENTITY(n)->type == BL_PC) ? (character_t *)(ARGENTITY(n)) : NULL + +static int op_shroud (env_t * env, int args_nr, val_t * args) +{ + character_t *subject = ARGCHAR (0); + int arg = ARGINT (1); + + if (!subject) + return 0; + + subject->state.shroud_active = 1; + subject->state.shroud_hides_name_talking = + (arg & SHROUD_HIDE_NAME_TALKING_FLAG) != 0; + subject->state.shroud_disappears_on_pickup = + (arg & SHROUD_DISAPPEAR_ON_PICKUP_FLAG) != 0; + subject->state.shroud_disappears_on_talk = + (arg & SHROUD_DISAPPEAR_ON_TALK_FLAG) != 0; + return 0; +} + +static int op_reveal (env_t * env, int args_nr, val_t * args) +{ + character_t *subject = ARGCHAR (0); + + if (subject && subject->state.shroud_active) + magic_unshroud (subject); + + return 0; +} + +static int op_message (env_t * env, int args_nr, val_t * args) +{ + character_t *subject = ARGCHAR (0); + + if (subject) + clif_displaymessage (subject->fd, ARGSTR (1)); + + return 0; +} + +static void +timer_callback_kill_npc (timer_id UNUSED, tick_t odelay, custom_id_t npc_id, + custom_data_t data) +{ + struct npc_data *npc = (struct npc_data *) map_id2bl (npc_id); + if (npc) + npc_free (npc); +} + +static int op_messenger_npc (env_t * env, int args_nr, val_t * args) +{ + struct npc_data *npc; + location_t *loc = &ARGLOCATION (0); + + npc = npc_spawn_text (loc->m, loc->x, loc->y, + ARGINT (1), ARGSTR (2), ARGSTR (3)); + + add_timer (gettick () + ARGINT (4), + &timer_callback_kill_npc, npc->bl.id, 0); + + return 0; +} + +static void entity_warp (entity_t * target, int destm, int destx, int desty) +{ + if (target->type == BL_PC || target->type == BL_MOB) + { + + switch (target->type) + { + case BL_PC: + { + character_t *character = (character_t *) target; + char *map_name; + clif_clearchar_area (&character->bl, 3); + map_delblock (&character->bl); + character->bl.x = destx; + character->bl.y = desty; + character->bl.m = destm; + + pc_touch_all_relevant_npcs (character); + + // Note that touching NPCs may have triggered warping and thereby updated x and y: + map_name = map[character->bl.m].name; + + // Warp part #1: update relevant data, interrupt trading etc.: + pc_setpos (character, map_name, character->bl.x, character->bl.y, 0); + // Warp part #2: now notify the client + clif_changemap (character, map_name, + character->bl.x, character->bl.y); + break; + } + case BL_MOB: + target->x = destx; + target->y = desty; + target->m = destm; + clif_fixmobpos ((struct mob_data *) target); + break; + } + } +} + +static int op_move (env_t * env, int args_nr, val_t * args) +{ + entity_t *subject = ARGENTITY (0); + int dir = ARGDIR (1); + + int newx = subject->x + heading_x[dir]; + int newy = subject->y + heading_y[dir]; + + if (!map_is_solid (subject->m, newx, newy)) + entity_warp (subject, subject->m, newx, newy); + + return 0; +} + +static int op_warp (env_t * env, int args_nr, val_t * args) +{ + entity_t *subject = ARGENTITY (0); + location_t *loc = &ARGLOCATION (1); + + entity_warp (subject, loc->m, loc->x, loc->y); + + return 0; +} + +static int op_banish (env_t * env, int args_nr, val_t * args) +{ + entity_t *subject = ARGENTITY (0); + + if (subject->type == BL_MOB) + { + struct mob_data *mob = (struct mob_data *) subject; + + if (mob->mode & MOB_MODE_SUMMONED) + mob_catch_delete (mob, 3); + } + + return 0; +} + +static void +record_status_change (invocation_t * invocation, int bl_id, int sc_id) +{ + int index = invocation->status_change_refs_nr++; + status_change_ref_t *cr; + + RECREATE (invocation->status_change_refs, status_change_ref_t, invocation->status_change_refs_nr); + + cr = &invocation->status_change_refs[index]; + + cr->sc_type = sc_id; + cr->bl_id = bl_id; +} + +static int op_status_change (env_t * env, int args_nr, val_t * args) +{ + entity_t *subject = ARGENTITY (0); + int invocation_id = VAR (VAR_INVOCATION).ty == TY_INVOCATION + ? VAR (VAR_INVOCATION).v.v_int : 0; + invocation_t *invocation = (invocation_t *) map_id2bl (invocation_id); + + skill_status_effect (subject, ARGINT (1), ARGINT (2), ARGINT (3), + ARGINT (4), ARGINT (5), ARGINT (6), 0, + invocation_id); + + if (invocation && subject->type == BL_PC) + record_status_change (invocation, subject->id, ARGINT (1)); + + return 0; +} + +static int op_stop_status_change (env_t * env, int args_nr, val_t * args) +{ + entity_t *subject = ARGENTITY (0); + + skill_status_change_end (subject, ARGINT (1), -1); + + return 0; +} + +static int op_override_attack (env_t * env, int args_nr, val_t * args) +{ + entity_t *psubject = ARGENTITY (0); + int charges = ARGINT (1); + int attack_delay = ARGINT (2); + int attack_range = ARGINT (3); + int icon = ARGINT (4); + int look = ARGINT (5); + int stopattack = ARGINT (6); + character_t *subject; + + if (psubject->type != BL_PC) + return 0; + + subject = (character_t *) psubject; + + if (subject->attack_spell_override) + { + invocation_t *old_invocation = + (invocation_t *) map_id2bl (subject->attack_spell_override); + if (old_invocation) + spell_free_invocation (old_invocation); + } + + subject->attack_spell_override = + trigger_spell (subject->bl.id, VAR (VAR_INVOCATION).v.v_int); + subject->attack_spell_charges = charges; + + if (subject->attack_spell_override) + { + invocation_t *attack_spell = + (invocation_t *) map_id2bl (subject->attack_spell_override); + if (attack_spell && stopattack) + attack_spell->flags |= INVOCATION_FLAG_STOPATTACK; + + char_set_weapon_icon (subject, charges, icon, look); + char_set_attack_info (subject, attack_delay, attack_range); + } + + return 0; +} + +static int op_create_item (env_t * env, int args_nr, val_t * args) +{ + struct item item; + entity_t *entity = ARGENTITY (0); + character_t *subject; + int stackable; + int count = ARGINT (2); + if (count <= 0) + return 0; + + if (entity->type == BL_PC) + subject = (character_t *) entity; + else + return 0; + + GET_ARG_ITEM (1, item, stackable); + + if (!stackable) + while (count--) + pc_additem (subject, &item, 1); + else + pc_additem (subject, &item, count); + + return 0; +} + +#define AGGRAVATION_MODE_ATTACKS_CASTER(n) ((n) == 0 || (n) == 2) +#define AGGRAVATION_MODE_MAKES_AGGRESSIVE(n) ((n) > 0) + +static int op_aggravate (env_t * env, int args_nr, val_t * args) +{ + entity_t *victim = ARGENTITY (2); + int mode = ARGINT (1); + entity_t *target = ARGENTITY (0); + struct mob_data *other; + + if (target->type == BL_MOB) + other = (struct mob_data *) target; + else + return 0; + + mob_target (other, victim, battle_get_range (victim)); + + if (AGGRAVATION_MODE_MAKES_AGGRESSIVE (mode)) + other->mode = 0x85 | (other->mode & MOB_SENSIBLE_MASK); /* war */ + + if (AGGRAVATION_MODE_ATTACKS_CASTER (mode)) + { + other->target_id = victim->id; + other->attacked_id = victim->id; + } + + return 0; +} + +#define MONSTER_ATTITUDE_HOSTILE 0 +#define MONSTER_ATTITUDE_FRIENDLY 1 +#define MONSTER_ATTITUDE_SERVANT 2 +#define MONSTER_ATTITUDE_FROZEN 3 + +static int op_spawn (env_t * env, int args_nr, val_t * args) +{ + area_t *area = ARGAREA (0); + entity_t *owner_e = ARGENTITY (1); + int monster_id = ARGINT (2); + int monster_attitude = ARGINT (3); + int monster_count = ARGINT (4); + int monster_lifetime = ARGINT (5); + int i; + + character_t *owner = (monster_attitude == MONSTER_ATTITUDE_SERVANT + && owner_e->type == + BL_PC) ? (character_t *) owner_e : NULL; + + for (i = 0; i < monster_count; i++) + { + location_t loc; + magic_random_location (&loc, area); + + int mob_id; + struct mob_data *mob; + + mob_id = mob_once_spawn (owner, map[loc.m].name, loc.x, loc.y, "--ja--", // Is that needed? + monster_id, 1, ""); + + mob = (struct mob_data *) map_id2bl (mob_id); + + if (mob) + { + mob->mode = mob_db[monster_id].mode; + + switch (monster_attitude) + { + + case MONSTER_ATTITUDE_SERVANT: + mob->state.special_mob_ai = 1; + mob->mode |= 0x04; + break; + + case MONSTER_ATTITUDE_FRIENDLY: + mob->mode = 0x80 | (mob->mode & 1); + break; + + case MONSTER_ATTITUDE_HOSTILE: + mob->mode = 0x84 | (mob->mode & 1); + if (owner) + { + mob->target_id = owner->bl.id; + mob->attacked_id = owner->bl.id; + } + break; + + case MONSTER_ATTITUDE_FROZEN: + mob->mode = 0; + break; + } + + mob->mode |= + MOB_MODE_SUMMONED | MOB_MODE_TURNS_AGAINST_BAD_MASTER; + + mob->deletetimer = add_timer (gettick () + monster_lifetime, + mob_timer_delete, mob_id, 0); + + if (owner) + { + mob->master_id = owner->bl.id; + mob->master_dist = 6; + } + } + } + + return 0; +} + +static +const char *get_invocation_name (env_t * env) +{ + invocation_t *invocation; + + if (VAR (VAR_INVOCATION).ty != TY_INVOCATION) + return "?"; + invocation = (invocation_t *) map_id2bl (VAR (VAR_INVOCATION).v.v_int); + + if (invocation) + return invocation->spell->name; + else + return "??"; +} + +static int op_injure (env_t * env, int args_nr, val_t * args) +{ + entity_t *caster = ARGENTITY (0); + entity_t *target = ARGENTITY (1); + int damage_caused = ARGINT (2); + int mp_damage = ARGINT (3); + int target_hp = battle_get_hp (target); + int mdef = battle_get_mdef (target); + + if (target->type == BL_PC && !map[target->m].flag.pvp && !((character_t *) target)->special_state.killable && (caster->type != BL_PC || !((character_t *) caster)->special_state.killer)) + return 0; /* Cannot damage other players outside of pvp */ + + if (target != caster) + { + /* Not protected against own spells */ + damage_caused = (damage_caused * (100 - mdef)) / 100; + mp_damage = (mp_damage * (100 - mdef)) / 100; + } + + damage_caused = (damage_caused > target_hp) ? target_hp : damage_caused; + + if (damage_caused < 0) + damage_caused = 0; + + // display damage first, because dealing damage may deallocate the target. + clif_damage (caster, target, gettick (), 0, 0, damage_caused, 0, 0, 0); + + if (caster->type == BL_PC) + { + character_t *caster_pc = (character_t *) caster; + if (target->type == BL_MOB) + { + struct mob_data *mob = (struct mob_data *) target; + + MAP_LOG_PC (caster_pc, "SPELLDMG MOB%d %d FOR %d BY %s", + mob->bl.id, mob->mob_class, damage_caused, + get_invocation_name (env)); + } + } + battle_damage (caster, target, damage_caused, mp_damage); + + return 0; +} + +static int op_emote (env_t * env, int args_nr, val_t * args) +{ + entity_t *victim = ARGENTITY (0); + int emotion = ARGINT (1); + clif_emotion (victim, emotion); + + return 0; +} + +static int op_set_script_variable (env_t * env, int args_nr, val_t * args) +{ + character_t *c = (ETY (0) == BL_PC) ? ARGPC (0) : NULL; + + if (!c) + return 1; + + pc_setglobalreg (c, ARGSTR (1), ARGINT (2)); + + return 0; +} + +static int op_set_hair_colour (env_t * env, int args_nr, val_t * args) +{ + character_t *c = (ETY (0) == BL_PC) ? ARGPC (0) : NULL; + + if (!c) + return 1; + + pc_changelook (c, LOOK_HAIR_COLOR, ARGINT (1)); + + return 0; +} + +static int op_set_hair_style (env_t * env, int args_nr, val_t * args) +{ + character_t *c = (ETY (0) == BL_PC) ? ARGPC (0) : NULL; + + if (!c) + return 1; + + pc_changelook (c, LOOK_HAIR, ARGINT (1)); + + return 0; +} + +static int op_drop_item_for (env_t * env, int args_nr, val_t * args) +{ + struct item item; + int stackable; + location_t *loc = &ARGLOCATION (0); + int count = ARGINT (2); + int time = ARGINT (3); + character_t *c = ((args_nr > 4) && (ETY (4) == BL_PC)) ? ARGPC (4) : NULL; + int delay = (args_nr > 5) ? ARGINT (5) : 0; + int delaytime[3] = { delay, delay, delay }; + character_t *owners[3] = { c, NULL, NULL }; + + GET_ARG_ITEM (1, item, stackable); + + if (stackable) + map_addflooritem_any (&item, count, loc->m, loc->x, loc->y, + owners, delaytime, time, 0); + else + while (count-- > 0) + map_addflooritem_any (&item, 1, loc->m, loc->x, loc->y, + owners, delaytime, time, 0); + + return 0; +} + +static int op_gain_exp (env_t * env, int args_nr, val_t * args) +{ + character_t *c = (ETY (0) == BL_PC) ? ARGPC (0) : NULL; + + if (!c) + return 1; + + pc_gainexp_reason (c, ARGINT (1), ARGINT (2), ARGINT (3)); + return 0; +} + +static op_t operations[] = { + {"sfx", ".ii", op_sfx}, + {"instaheal", "eii", op_instaheal}, + {"itemheal", "eii", op_itemheal}, + {"shroud", "ei", op_shroud}, + {"unshroud", "e", op_reveal}, + {"message", "es", op_message}, + {"messenger_npc", "lissi", op_messenger_npc}, + {"move", "ed", op_move}, + {"warp", "el", op_warp}, + {"banish", "e", op_banish}, + {"status_change", "eiiiiii", op_status_change}, + {"stop_status_change", "ei", op_stop_status_change}, + {"override_attack", "eiiiiii", op_override_attack}, + {"create_item", "e.i", op_create_item}, + {"aggravate", "eie", op_aggravate}, + {"spawn", "aeiiii", op_spawn}, + {"injure", "eeii", op_injure}, + {"emote", "ei", op_emote}, + {"set_script_variable", "esi", op_set_script_variable}, + {"set_hair_colour", "ei", op_set_hair_colour}, + {"set_hair_style", "ei", op_set_hair_style}, + {"drop_item", "l.ii", op_drop_item_for}, + {"drop_item_for", "l.iiei", op_drop_item_for}, + {"gain_experience", "eiii", op_gain_exp}, + {NULL, NULL, NULL} +}; + +static int operations_sorted = 0; +static int operation_count; + +static +int compare_operations (const void *lhs, const void *rhs) +{ + return strcmp (((op_t *) lhs)->name, ((op_t *) rhs)->name); +} + +op_t *magic_get_op (char *name, int *index) +{ + op_t key; + + if (!operations_sorted) + { + op_t *opc = operations; + + while (opc->name) + ++opc; + + operation_count = opc - operations; + + qsort (operations, operation_count, sizeof (op_t), + compare_operations); + operations_sorted = 1; + } + + key.name = name; + op_t *op = (op_t *)bsearch (&key, operations, operation_count, sizeof (op_t), + compare_operations); + + if (op && index) + *index = op - operations; + + return op; +} + +void +spell_effect_report_termination (int invocation_id, int bl_id, int sc_id, + int supplanted) +{ + int i; + int index = -1; + invocation_t *invocation = (invocation_t *) map_id2bl (invocation_id); + + if (!invocation || invocation->bl.type != BL_SPELL) + return; + + for (i = 0; i < invocation->status_change_refs_nr; i++) + { + status_change_ref_t *cr = &invocation->status_change_refs[i]; + if (cr->sc_type == sc_id && cr->bl_id == bl_id) + { + index = i; + break; + } + } + + if (index == -1) + { + entity_t *entity = map_id2bl (bl_id); + if (entity->type == BL_PC) + fprintf (stderr, + "[magic] INTERNAL ERROR: spell-effect-report-termination: tried to terminate on unexpected bl %d, sc %d\n", + bl_id, sc_id); + return; + } + + if (index == invocation->status_change_refs_nr - 1) + invocation->status_change_refs_nr--; + else /* Copy last change ref to the one we are deleting */ + invocation->status_change_refs[index] = + invocation-> + status_change_refs[--invocation->status_change_refs_nr]; + + try_to_finish_invocation (invocation); +} + +static effect_t *return_to_stack (invocation_t * invocation) +{ + if (!invocation->stack_size) + return NULL; + else + { + cont_activation_record_t *ar = + invocation->stack + (invocation->stack_size - 1); + switch (ar->ty) + { + + case CONT_STACK_PROC: + { + effect_t *ret = ar->return_location; + int i; + + for (i = 0; i < ar->c.c_proc.args_nr; i++) + { + val_t *var = + &invocation->env->vars[ar->c.c_proc.formals[i]]; + magic_clear_var (var); + *var = ar->c.c_proc.old_actuals[i]; + } + + clear_activation_record (ar); + --invocation->stack_size; + + return ret; + } + + case CONT_STACK_FOREACH: + { + int entity_id; + val_t *var = &invocation->env->vars[ar->c.c_foreach.id]; + + do + { + if (ar->c.c_foreach.index >= ar->c.c_foreach.entities_nr) + { + effect_t *ret = ar->return_location; + clear_activation_record (ar); + --invocation->stack_size; + return ret; + } + + entity_id = + ar->c.c_foreach.entities[ar->c.c_foreach.index++]; + } + while (!entity_id || !map_id2bl (entity_id)); + + magic_clear_var (var); + var->ty = ar->c.c_foreach.ty; + var->v.v_int = entity_id; + + return ar->c.c_foreach.body; + } + + case CONT_STACK_FOR: + if (ar->c.c_for.current > ar->c.c_for.stop) + { + effect_t *ret = ar->return_location; + clear_activation_record (ar); + --invocation->stack_size; + return ret; + } + + magic_clear_var (&invocation->env->vars[ar->c.c_for.id]); + invocation->env->vars[ar->c.c_for.id].ty = TY_INT; + invocation->env->vars[ar->c.c_for.id].v.v_int = + ar->c.c_for.current++; + + return ar->c.c_for.body; + + default: + fprintf (stderr, + "[magic] INTERNAL ERROR: While executing spell `%s': stack corruption\n", + invocation->spell->name); + return NULL; + } + } +} + +static cont_activation_record_t *add_stack_entry (invocation_t * invocation, + int ty, + effect_t * return_location) +{ + cont_activation_record_t *ar = + invocation->stack + invocation->stack_size++; + if (invocation->stack_size >= MAX_STACK_SIZE) + { + fprintf (stderr, + "[magic] Execution stack size exceeded in spell `%s'; truncating effect\n", + invocation->spell->name); + invocation->stack_size--; + return NULL; + } + + ar->ty = ty; + ar->return_location = return_location; + return ar; +} + +static int find_entities_in_area_c (entity_t * target, va_list va) +{ + int *entities_allocd_p = va_arg (va, int *); + int *entities_nr_p = va_arg (va, int *); + int **entities_p = va_arg (va, int **); + int filter = va_arg (va, int); + +/* The following macro adds an entity to the result list: */ +#define ADD_ENTITY(e) \ + if (*entities_nr_p == *entities_allocd_p) { \ + /* Need more space */ \ + (*entities_allocd_p) += 32; \ + RECREATE (*entities_p, int, *entities_allocd_p); \ + } \ + (*entities_p)[(*entities_nr_p)++] = e; + + switch (target->type) + { + + case BL_PC: + if (filter == FOREACH_FILTER_PC + || filter == FOREACH_FILTER_ENTITY + || (filter == FOREACH_FILTER_TARGET + && map[target->m].flag.pvp)) + break; + else if (filter == FOREACH_FILTER_SPELL) + { /* Check all spells bound to the caster */ + invocation_t *invoc = ((character_t *) target)->active_spells; + /* Add all spells locked onto thie PC */ + + while (invoc) + { + ADD_ENTITY (invoc->bl.id); + invoc = invoc->next_invocation; + } + } + return 0; + + case BL_MOB: + if (filter == FOREACH_FILTER_MOB + || filter == FOREACH_FILTER_ENTITY + || filter == FOREACH_FILTER_TARGET) + break; + else + return 0; + + case BL_SPELL: + if (filter == FOREACH_FILTER_SPELL) + { + invocation_t *invocation = (invocation_t *) target; + + /* Check whether the spell is `bound'-- if so, we'll consider it iff we see the caster (case BL_PC). */ + if (invocation->flags & INVOCATION_FLAG_BOUND) + return 0; + else + break; /* Add the spell */ + } + else + return 0; + + case BL_NPC: + if (filter == FOREACH_FILTER_NPC) + break; + else + return 0; + + default: + return 0; + } + + ADD_ENTITY (target->id); +#undef ADD_ENTITY + return 0; +} + +static void +find_entities_in_area (area_t * area, int *entities_allocd_p, + int *entities_nr_p, int **entities_p, int filter) +{ + switch (area->ty) + { + case AREA_UNION: + find_entities_in_area (area->a.a_union[0], entities_allocd_p, + entities_nr_p, entities_p, filter); + find_entities_in_area (area->a.a_union[1], entities_allocd_p, + entities_nr_p, entities_p, filter); + break; + + default: + { + int m, x, y, width, height; + magic_area_rect (&m, &x, &y, &width, &height, area); + map_foreachinarea (find_entities_in_area_c, + m, x, y, x + width, y + height, + 0 /* filter elsewhere */ , + entities_allocd_p, entities_nr_p, entities_p, + filter); + } + } +} + +static effect_t *run_foreach (invocation_t * invocation, effect_t * foreach, + effect_t * return_location) +{ + val_t area; + int filter = foreach->e.e_foreach.filter; + int id = foreach->e.e_foreach.id; + effect_t *body = foreach->e.e_foreach.body; + + magic_eval (invocation->env, &area, foreach->e.e_foreach.area); + + if (area.ty != TY_AREA) + { + magic_clear_var (&area); + fprintf (stderr, + "[magic] Error in spell `%s': FOREACH loop over non-area\n", + invocation->spell->name); + return return_location; + } + else + { + cont_activation_record_t *ar = + add_stack_entry (invocation, CONT_STACK_FOREACH, return_location); + int entities_allocd = 64; + int *entities_collect; + int *entities; + int *shuffle_board; + int entities_nr = 0; + int i; + + if (!ar) + return return_location; + + CREATE (entities_collect, int, entities_allocd); + + find_entities_in_area (area.v.v_area, &entities_allocd, &entities_nr, + &entities_collect, filter); + + /* Now shuffle */ + CREATE (shuffle_board, int, entities_nr); + CREATE (entities, int, entities_nr); + for (i = 0; i < entities_nr; i++) + shuffle_board[i] = i; + + for (i = entities_nr - 1; i >= 0; i--) + { + int random_index = rand () % (i + 1); + entities[i] = entities_collect[shuffle_board[random_index]]; + shuffle_board[random_index] = shuffle_board[i]; // thus, we are guaranteed only to use unused indices + } + + free (entities_collect); + free (shuffle_board); + /* Done shuffling */ + + ar->c.c_foreach.id = id; + ar->c.c_foreach.body = body; + ar->c.c_foreach.index = 0; + ar->c.c_foreach.entities_nr = entities_nr; + ar->c.c_foreach.entities = entities; + ar->c.c_foreach.ty = + (filter == FOREACH_FILTER_SPELL) ? TY_INVOCATION : TY_ENTITY; + + magic_clear_var (&area); + + return return_to_stack (invocation); + } +} + +static effect_t *run_for (invocation_t * invocation, effect_t * for_, + effect_t * return_location) +{ + cont_activation_record_t *ar; + int id = for_->e.e_for.id; + val_t start; + val_t stop; + + magic_eval (invocation->env, &start, for_->e.e_for.start); + magic_eval (invocation->env, &stop, for_->e.e_for.stop); + + if (start.ty != TY_INT || stop.ty != TY_INT) + { + magic_clear_var (&start); + magic_clear_var (&stop); + fprintf (stderr, + "[magic] Error in spell `%s': FOR loop start or stop point is not an integer\n", + invocation->spell->name); + return return_location; + } + + ar = add_stack_entry (invocation, CONT_STACK_FOR, return_location); + + if (!ar) + return return_location; + + ar->c.c_for.id = id; + ar->c.c_for.current = start.v.v_int; + ar->c.c_for.stop = stop.v.v_int; + ar->c.c_for.body = for_->e.e_for.body; + + return return_to_stack (invocation); +} + +static effect_t *run_call (invocation_t * invocation, + effect_t * return_location) +{ + effect_t *current = invocation->current_effect; + cont_activation_record_t *ar; + int args_nr = current->e.e_call.args_nr; + int *formals = current->e.e_call.formals; + val_t *old_actuals; + CREATE (old_actuals, val_t, args_nr); + int i; + + ar = add_stack_entry (invocation, CONT_STACK_PROC, return_location); + ar->c.c_proc.args_nr = args_nr; + ar->c.c_proc.formals = formals; + ar->c.c_proc.old_actuals = old_actuals; + for (i = 0; i < args_nr; i++) + { + val_t *env_val = &invocation->env->vars[formals[i]]; + val_t result; + magic_copy_var (&old_actuals[i], env_val); + magic_eval (invocation->env, &result, current->e.e_call.actuals[i]); + *env_val = result; + } + + return current->e.e_call.body; +} + +#ifdef DEBUG +static void print_cfg (int i, effect_t * e) +{ + int j; + for (j = 0; j < i; j++) + printf (" "); + + printf ("%p: ", e); + + if (!e) + { + puts (" -- end --"); + return; + } + + switch (e->ty) + { + case EFFECT_SKIP: + puts ("SKIP"); + break; + case EFFECT_END: + puts ("END"); + break; + case EFFECT_ABORT: + puts ("ABORT"); + break; + case EFFECT_ASSIGN: + puts ("ASSIGN"); + break; + case EFFECT_FOREACH: + puts ("FOREACH"); + print_cfg (i + 1, e->e.e_foreach.body); + break; + case EFFECT_FOR: + puts ("FOR"); + print_cfg (i + 1, e->e.e_for.body); + break; + case EFFECT_IF: + puts ("IF"); + for (j = 0; j < i; j++) + printf (" "); + puts ("THEN"); + print_cfg (i + 1, e->e.e_if.true_branch); + for (j = 0; j < i; j++) + printf (" "); + puts ("ELSE"); + print_cfg (i + 1, e->e.e_if.false_branch); + break; + case EFFECT_SLEEP: + puts ("SLEEP"); + break; + case EFFECT_SCRIPT: + puts ("SCRIPT"); + break; + case EFFECT_BREAK: + puts ("BREAK"); + break; + case EFFECT_OP: + puts ("OP"); + break; + } + print_cfg (i, e->next); +} +#endif + +/** + * Execute a spell invocation until we abort, finish, or hit the next `sleep'. + * + * Use spell_execute() to automate handling of timers + * + * Returns: 0 if finished (all memory is freed implicitly) + * >1 if we hit `sleep'; the result is the number of ticks we should sleep for. + * -1 if we paused to wait for a user action (via script interaction) + */ +static int spell_run (invocation_t * invocation, int allow_delete) +{ + const int invocation_id = invocation->bl.id; +#define REFRESH_INVOCATION invocation = (invocation_t *) map_id2bl(invocation_id); if (!invocation) return 0; + +#ifdef DEBUG + fprintf (stderr, "Resuming execution: invocation of `%s'\n", + invocation->spell->name); + print_cfg (1, invocation->current_effect); +#endif + while (invocation->current_effect) + { + effect_t *e = invocation->current_effect; + effect_t *next = e->next; + int i; + +#ifdef DEBUG + fprintf (stderr, "Next step of type %d\n", e->ty); + dump_env (invocation->env); +#endif + + switch (e->ty) + { + case EFFECT_SKIP: + break; + + case EFFECT_ABORT: + invocation->flags |= INVOCATION_FLAG_ABORTED; + invocation->end_effect = NULL; + case EFFECT_END: + clear_stack (invocation); + next = NULL; + break; + + case EFFECT_ASSIGN: + magic_eval (invocation->env, + &invocation->env->vars[e->e.e_assign.id], + e->e.e_assign.expr); + break; + + case EFFECT_FOREACH: + next = run_foreach (invocation, e, next); + break; + + case EFFECT_FOR: + next = run_for (invocation, e, next); + break; + + case EFFECT_IF: + if (magic_eval_int (invocation->env, e->e.e_if.cond)) + next = e->e.e_if.true_branch; + else + next = e->e.e_if.false_branch; + break; + + case EFFECT_SLEEP: + { + int sleeptime = + magic_eval_int (invocation->env, e->e.e_sleep); + invocation->current_effect = next; + if (sleeptime > 0) + return sleeptime; + break; + } + + case EFFECT_SCRIPT: + { + character_t *caster = + (character_t *) map_id2bl (invocation->caster); + if (caster) + { + env_t *env = invocation->env; + argrec_t arg[] = { {"@target", + VAR (VAR_TARGET).ty == + TY_ENTITY ? 0 : VAR (VAR_TARGET). + v.v_int} + , + {"@caster", invocation->caster} + , + {"@caster_name$", caster ? caster->status.name : ""} + }; + int message_recipient = + VAR (VAR_SCRIPTTARGET).ty == + TY_ENTITY ? VAR (VAR_SCRIPTTARGET). + v.v_int : invocation->caster; + character_t *recipient = + (character_t *) map_id2bl (message_recipient); + + if (recipient->npc_id + && recipient->npc_id != invocation->bl.id) + break; /* Don't send multiple message boxes at once */ + + if (!invocation->script_pos) // first time running this script? + clif_spawn_fake_npc_for_player (recipient, + invocation->bl.id); + // We have to do this or otherwise the client won't think that it's + // dealing with an NPC + + int newpos = run_script_l (e->e.e_script, + invocation->script_pos, + message_recipient, + invocation->bl.id, + 3, arg); + /* Returns the new script position, or -1 once the script is finished */ + if (newpos != -1) + { + /* Must set up for continuation */ + recipient->npc_id = invocation->bl.id; + recipient->npc_pos = invocation->script_pos = newpos; + return -1; /* Signal `wait for script' */ + } + else + invocation->script_pos = 0; + clif_clearchar_id (invocation->bl.id, 1, caster->fd); + } + REFRESH_INVOCATION; // Script may have killed the caster + break; + } + + case EFFECT_BREAK: + next = return_to_stack (invocation); + break; + + case EFFECT_OP: + { + op_t *op = &operations[e->e.e_op.id]; + val_t args[MAX_ARGS]; + + for (i = 0; i < e->e.e_op.args_nr; i++) + magic_eval (invocation->env, &args[i], e->e.e_op.args[i]); + + if (!magic_signature_check ("effect", op->name, op->signature, + e->e.e_op.args_nr, args, + e->e.e_op.line_nr, + e->e.e_op.column)) + op->op (invocation->env, e->e.e_op.args_nr, args); + + for (i = 0; i < e->e.e_op.args_nr; i++) + magic_clear_var (&args[i]); + + REFRESH_INVOCATION; // Effect may have killed the caster + break; + } + + case EFFECT_CALL: + next = run_call (invocation, next); + break; + + default: + fprintf (stderr, + "[magic] INTERNAL ERROR: Unknown effect %d\n", + e->ty); + } + + if (!next) + next = return_to_stack (invocation); + + invocation->current_effect = next; + } + + if (allow_delete) + try_to_finish_invocation (invocation); + return 0; +#undef REFRESH_INVOCATION +} + +static +void spell_execute_d (invocation_t * invocation, int allow_deletion) +{ + int delta; + + spell_update_location (invocation); + delta = spell_run (invocation, allow_deletion); + + if (delta > 0) + { + if (invocation->timer) + { + fprintf (stderr, + "[magic] FATAL ERROR: Trying to add multiple timers to the same spell! Already had timer: %d\n", + invocation->timer); + /* *((int *)0x0) = 0; */ + } + invocation->timer = add_timer (gettick () + delta, + &invocation_timer_callback, + invocation->bl.id, 0); + } + + /* If 0, the script cleaned itself. If -1 (wait-for-script), we must wait for the user. */ +} + +void spell_execute (invocation_t * invocation) +{ + spell_execute_d (invocation, 1); +} + +void spell_execute_script (invocation_t * invocation) +{ + if (invocation->script_pos) + spell_execute_d (invocation, 1); + /* Otherwise the script-within-the-spell has been terminated by some other means. + * In practice this happens when the script doesn't wait for user input: the client + * may still notify the server that it's done. Without the above check, we'd be + * running the same spell twice! */ +} + +int spell_attack (int caster_id, int target_id) +{ + character_t *caster = (character_t *) map_id2bl (caster_id); + invocation_t *invocation; + int stop_attack = 0; + + if (!caster) + return 0; + + invocation = (invocation_t *) map_id2bl (caster->attack_spell_override); + + if (invocation && invocation->flags & INVOCATION_FLAG_STOPATTACK) + stop_attack = 1; + + if (invocation && caster->attack_spell_charges > 0) + { + magic_clear_var (&invocation->env->vars[VAR_TARGET]); + invocation->env->vars[VAR_TARGET].ty = TY_ENTITY; + invocation->env->vars[VAR_TARGET].v.v_int = target_id; + + invocation->current_effect = invocation->trigger_effect; + invocation->flags &= ~INVOCATION_FLAG_ABORTED; + spell_execute_d (invocation, + 0 /* don't delete the invocation if done */ ); + + // If the caster died, we need to refresh here: + invocation = + (invocation_t *) map_id2bl (caster->attack_spell_override); + + if (invocation && !(invocation->flags & INVOCATION_FLAG_ABORTED)) // If we didn't abort: + caster->attack_spell_charges--; + } + + if (invocation && caster->attack_spell_override != invocation->bl.id) + { + /* Attack spell changed / was refreshed */ + // spell_free_invocation(invocation); // [Fate] This would be a double free. + } + else if (!invocation || caster->attack_spell_charges <= 0) + { + caster->attack_spell_override = 0; + char_set_weapon_icon (caster, 0, 0, 0); + char_set_attack_info (caster, 0, 0); + + if (stop_attack) + pc_stopattack (caster); + + if (invocation) + spell_free_invocation (invocation); + } + + return 1; +} |