From 41974ae5265fbc23a06f276f9e008d5dad020e0b Mon Sep 17 00:00:00 2001 From: Ben Longbons Date: Thu, 30 Aug 2012 16:16:25 -0700 Subject: Rename files for C++ conversion. Does not compile. After updating, you can remove these files, as shown in 'git status': Untracked files: (use "git add ..." to include in what will be committed) src/map/magic-interpreter-lexer.c src/map/magic-interpreter-parser.c src/map/magic-interpreter-parser.h --- src/map/magic-interpreter-base.cpp | 562 +++++++++++++++++++++++++++++++++++++ 1 file changed, 562 insertions(+) create mode 100644 src/map/magic-interpreter-base.cpp (limited to 'src/map/magic-interpreter-base.cpp') diff --git a/src/map/magic-interpreter-base.cpp b/src/map/magic-interpreter-base.cpp new file mode 100644 index 0000000..1dc90a5 --- /dev/null +++ b/src/map/magic-interpreter-base.cpp @@ -0,0 +1,562 @@ +#include "magic.hpp" +#include "magic-interpreter.hpp" +#include "magic-expr.hpp" +#include "magic-interpreter-aux.hpp" + +static void set_int_p (val_t * v, int i, int t) +{ + v->ty = t; + v->v.v_int = i; +} + +#define set_int(v, i) set_int_p(v, i, TY_INT) +#define set_dir(v, i) set_int_p(v, i, TY_DIR) + +#define SETTER(tty, dyn_ty, field) (val_t *v, tty x) { v->ty = dyn_ty; v->v.field = x; } + +static void set_string SETTER (char *, TY_STRING, v_string); + +static void set_entity (val_t * v, entity_t * e) +{ + v->ty = TY_ENTITY; + v->v.v_int = e->id; +} + +static void set_invocation (val_t * v, invocation_t * i) +{ + v->ty = TY_INVOCATION; + v->v.v_int = i->bl.id; +} + +static void set_spell SETTER (spell_t *, TY_SPELL, v_spell); + +#define setenv(f, v, x) f(&(env->vars[v]), x) + +#define set_env_int(v, x) setenv(set_int, v, x) +#define set_env_dir(v, x) setenv(set_dir, v, x) +#define set_env_string(v, x) setenv(set_string, v, x) +#define set_env_entity(v, x) setenv(set_entity, v, x) +#define set_env_location(v, x) setenv(set_location, v, x) +#define set_env_area(v, x) setenv(set_area, v, x) +#define set_env_invocation(v, x) setenv(set_invocation, v, x) +#define set_env_spell(v, x) setenv(set_spell, v, x) + +magic_conf_t magic_conf; /* Global magic conf */ +env_t magic_default_env = { &magic_conf, NULL }; + +static int spells_sorted = 0; + +char *magic_find_invocation (char *spellname) +{ + int i; + + for (i = 0; i < abs (magic_conf.spells_nr); i++) + if (!strcmp (magic_conf.spells[i]->name, spellname)) + return magic_conf.spells[i]->invocation; + + return NULL; +} + +static int spell_compare (const void *lhs, const void *rhs) +{ + return strcmp ((*((spell_t **) lhs))->invocation, + (*((spell_t **) rhs))->invocation); +} + +spell_t *magic_find_spell (char *invocation) +{ + spell_t key; + spell_t *keyp = &key; + spell_t **retval; + + if (!spells_sorted) + { + qsort (magic_conf.spells, magic_conf.spells_nr, sizeof (spell_t *), + spell_compare); + spells_sorted = 1; + } + + key.invocation = invocation; + + retval = + ((spell_t **) + bsearch (&keyp, magic_conf.spells, magic_conf.spells_nr, + sizeof (spell_t *), spell_compare)); + + if (!retval) + return NULL; + else + return *retval; +} + +/* -------------------------------------------------------------------------------- */ +/* Spell anchors */ +/* -------------------------------------------------------------------------------- */ + +static int compare_teleport_anchor (const void *lhs, const void *rhs) +{ + return strcmp ((*((teleport_anchor_t **) lhs))->invocation, + (*((teleport_anchor_t **) rhs))->invocation); +} + +char *magic_find_anchor_invocation (char *anchor_name) +{ + int i; + + for (i = 0; i < abs (magic_conf.anchors_nr); i++) + if (!strcmp (magic_conf.anchors[i]->name, anchor_name)) + return magic_conf.anchors[i]->invocation; + + return NULL; +} + +teleport_anchor_t *magic_find_anchor (char *name) +{ + teleport_anchor_t key; + teleport_anchor_t *keyp = &key; + teleport_anchor_t **retval; + + if (magic_conf.anchors_nr > 0) + { /* unsorted */ + qsort (magic_conf.anchors, magic_conf.anchors_nr, + sizeof (teleport_anchor_t *), compare_teleport_anchor); + magic_conf.anchors_nr = -magic_conf.anchors_nr; + } + + key.invocation = name; + + retval = (teleport_anchor_t **) bsearch (&keyp, + magic_conf.anchors, + -magic_conf.anchors_nr, + sizeof (teleport_anchor_t *), + compare_teleport_anchor); + + if (!retval) + return NULL; + else + return *retval; +} + +/* -------------------------------------------------------------------------------- */ +/* Spell guard checks */ +/* -------------------------------------------------------------------------------- */ + +static env_t *alloc_env (magic_conf_t * conf) +{ + env_t *env; + CREATE (env, env_t, 1); + CREATE (env->vars, val_t, conf->vars_nr); + env->base_env = conf; + return env; +} + +static env_t *clone_env (env_t * src) +{ + env_t *retval = alloc_env (src->base_env); + int i; + + for (i = 0; i < src->base_env->vars_nr; i++) + magic_copy_var (&retval->vars[i], &src->vars[i]); + + return retval; +} + +void magic_free_env (env_t * env) +{ + int i; + for (i = 0; i < env->base_env->vars_nr; i++) + magic_clear_var (&env->vars[i]); + free (env); +} + +env_t *spell_create_env (magic_conf_t * conf, spell_t * spell, + character_t * caster, int spellpower, char *param) +{ + env_t *env = alloc_env (conf); + + switch (spell->spellarg_ty) + { + + case SPELLARG_STRING: + set_env_string (spell->arg, param); + break; + + case SPELLARG_PC: + { + character_t *subject = map_nick2sd (param); + if (!subject) + subject = caster; + set_env_entity (spell->arg, &subject->bl); + free (param); + break; + } + + case SPELLARG_NONE: + free (param); + break; + + default: + free (param); + fprintf (stderr, "Unexpected spellarg type %d\n", + spell->spellarg_ty); + } + + set_env_entity (VAR_CASTER, &caster->bl); + set_env_int (VAR_SPELLPOWER, spellpower); + set_env_spell (VAR_SPELL, spell); + + return env; +} + +static void free_components (component_t ** component_holder) +{ + if (*component_holder == NULL) + return; + free_components (&(*component_holder)->next); + free (*component_holder); + *component_holder = NULL; +} + +void magic_add_component (component_t ** component_holder, int id, int count) +{ + if (count <= 0) + return; + + if (*component_holder == NULL) + { + component_t *component = + (component_t *) malloc (sizeof (component_t)); + component->next = NULL; + component->item_id = id; + component->count = count; + *component_holder = component; + } + else + { + component_t *component = *component_holder; + if (component->item_id == id) + { + component->count += count; + return; + } + else + magic_add_component (&component->next, id, count); + /* Tail-recurse; gcc can optimise this. Not that it matters. */ + } +} + +static void +copy_components (component_t ** component_holder, component_t * component) +{ + if (component == NULL) + return; + + magic_add_component (component_holder, component->item_id, + component->count); + copy_components (component_holder, component->next); +} + +typedef struct spellguard_check +{ + component_t *catalysts, *components; + int mana, casttime; +} spellguard_check_t; + +static int check_prerequisites (character_t * caster, component_t * component) +{ + while (component) + { + if (pc_count_all_items (caster, component->item_id) + < component->count) + return 0; /* insufficient */ + + component = component->next; + } + + return 1; +} + +static void consume_components (character_t * caster, component_t * component) +{ + while (component) + { + pc_remove_items (caster, component->item_id, component->count); + component = component->next; + } +} + +static int +spellguard_can_satisfy (spellguard_check_t * check, character_t * caster, + env_t * env, int *near_miss) +{ + unsigned int tick = gettick (); + + int retval = check_prerequisites (caster, check->catalysts); + +/* + fprintf(stderr, "MC(%d/%s)? %d%d%d%d (%u <= %u)\n", + caster->bl.id, caster->status.name, + retval, + caster->cast_tick <= tick, + check->mana <= caster->status.sp, + check_prerequisites(caster, check->components), + caster->cast_tick, tick); +*/ + + if (retval && near_miss) + *near_miss = 1; // close enough! + + retval = retval && caster->cast_tick <= tick /* Hasn't cast a spell too recently */ + && check->mana <= caster->status.sp + && check_prerequisites (caster, check->components); + + if (retval) + { + unsigned int casttime = (unsigned int) check->casttime; + + if (VAR (VAR_MIN_CASTTIME).ty == TY_INT) + casttime = MAX (casttime, VAR (VAR_MIN_CASTTIME).v.v_int); + + caster->cast_tick = tick + casttime; /* Make sure not to cast too frequently */ + + consume_components (caster, check->components); + pc_heal (caster, 0, -check->mana); + } + + return retval; +} + +static effect_set_t *spellguard_check_sub (spellguard_check_t * check, + spellguard_t * guard, + character_t * caster, env_t * env, + int *near_miss) +{ + if (guard == NULL) + return NULL; + + switch (guard->ty) + { + case SPELLGUARD_CONDITION: + if (!magic_eval_int (env, guard->s.s_condition)) + return NULL; + break; + + case SPELLGUARD_COMPONENTS: + copy_components (&check->components, guard->s.s_components); + break; + + case SPELLGUARD_CATALYSTS: + copy_components (&check->catalysts, guard->s.s_catalysts); + break; + + case SPELLGUARD_CHOICE: + { + spellguard_check_t altcheck = *check; + effect_set_t *retval; + + altcheck.components = NULL; + altcheck.catalysts = NULL; + + copy_components (&altcheck.catalysts, check->catalysts); + copy_components (&altcheck.components, check->components); + + retval = + spellguard_check_sub (&altcheck, guard->next, caster, env, + near_miss); + free_components (&altcheck.catalysts); + free_components (&altcheck.components); + if (retval) + return retval; + else + return spellguard_check_sub (check, guard->s.s_alt, caster, + env, near_miss); + } + + case SPELLGUARD_MANA: + check->mana += magic_eval_int (env, guard->s.s_mana); + break; + + case SPELLGUARD_CASTTIME: + check->casttime += magic_eval_int (env, guard->s.s_mana); + break; + + case SPELLGUARD_EFFECT: + if (spellguard_can_satisfy (check, caster, env, near_miss)) + return &guard->s.s_effect; + else + return NULL; + + default: + fprintf (stderr, "Unexpected spellguard type %d\n", guard->ty); + return NULL; + } + + return spellguard_check_sub (check, guard->next, caster, env, near_miss); +} + +static effect_set_t *check_spellguard (spellguard_t * guard, + character_t * caster, env_t * env, + int *near_miss) +{ + spellguard_check_t check; + effect_set_t *retval; + check.catalysts = NULL; + check.components = NULL; + check.mana = check.casttime = 0; + + retval = spellguard_check_sub (&check, guard, caster, env, near_miss); + + free_components (&check.catalysts); + free_components (&check.components); + + return retval; +} + +/* -------------------------------------------------------------------------------- */ +/* Public API */ +/* -------------------------------------------------------------------------------- */ + +effect_set_t *spell_trigger (spell_t * spell, character_t * caster, + env_t * env, int *near_miss) +{ + int i; + spellguard_t *guard = spell->spellguard; + + if (near_miss) + *near_miss = 0; + + for (i = 0; i < spell->letdefs_nr; i++) + magic_eval (env, + &env->vars[spell->letdefs[i].id], spell->letdefs[i].expr); + + return check_spellguard (guard, caster, env, near_miss); +} + +static void spell_set_location (invocation_t * invocation, entity_t * entity) +{ + magic_clear_var (&invocation->env->vars[VAR_LOCATION]); + invocation->env->vars[VAR_LOCATION].ty = TY_LOCATION; + invocation->env->vars[VAR_LOCATION].v.v_location.m = entity->m; + invocation->env->vars[VAR_LOCATION].v.v_location.x = entity->x; + invocation->env->vars[VAR_LOCATION].v.v_location.y = entity->y; +} + +void spell_update_location (invocation_t * invocation) +{ + if (invocation->spell->flags & SPELL_FLAG_LOCAL) + return; + else + { + character_t *owner = (character_t *) map_id2bl (invocation->subject); + if (!owner) + return; + + spell_set_location (invocation, (entity_t *) owner); + } +} + +invocation_t *spell_instantiate (effect_set_t * effect_set, env_t * env) +{ + invocation_t *retval; + CREATE (retval, invocation_t, 1); + entity_t *caster; + + retval->env = env; + + retval->caster = VAR (VAR_CASTER).v.v_int; + retval->spell = VAR (VAR_SPELL).v.v_spell; + retval->stack_size = 0; + retval->current_effect = effect_set->effect; + retval->trigger_effect = effect_set->at_trigger; + retval->end_effect = effect_set->at_end; + + caster = map_id2bl (retval->caster); // must still exist + retval->bl.id = map_addobject (&retval->bl); + retval->bl.type = BL_SPELL; + retval->bl.m = caster->m; + retval->bl.x = caster->x; + retval->bl.y = caster->y; + + map_addblock (&retval->bl); + set_env_invocation (VAR_INVOCATION, retval); + + return retval; +} + +invocation_t *spell_clone_effect (invocation_t * base) +{ + invocation_t *retval = (invocation_t *) malloc (sizeof (invocation_t)); + env_t *env; + + memcpy (retval, base, sizeof (invocation_t)); + + retval->env = clone_env (retval->env); + env = retval->env; + retval->current_effect = retval->trigger_effect; + retval->next_invocation = NULL; + retval->end_effect = NULL; + retval->script_pos = 0; + retval->stack_size = 0; + retval->timer = 0; + retval->subject = 0; + retval->status_change_refs_nr = 0; + retval->status_change_refs = NULL; + retval->flags = 0; + + retval->bl.id = 0; + retval->bl.prev = NULL; + retval->bl.next = NULL; + + retval->bl.id = map_addobject (&retval->bl); + set_env_invocation (VAR_INVOCATION, retval); + + return retval; +} + +void spell_bind (character_t * subject, invocation_t * invocation) +{ + /* Only bind nonlocal spells */ + + if (!(invocation->spell->flags & SPELL_FLAG_LOCAL)) + { + if (invocation->flags & INVOCATION_FLAG_BOUND + || invocation->subject || invocation->next_invocation) + { + int *i = NULL; + fprintf (stderr, + "[magic] INTERNAL ERROR: Attempt to re-bind spell invocation `%s'\n", + invocation->spell->name); + *i = 1; + return; + } + + invocation->next_invocation = subject->active_spells; + subject->active_spells = invocation; + invocation->flags |= INVOCATION_FLAG_BOUND; + invocation->subject = subject->bl.id; + } + + spell_set_location (invocation, (entity_t *) subject); +} + +int spell_unbind (character_t * subject, invocation_t * invocation) +{ + invocation_t **seeker = &subject->active_spells; + + while (*seeker) + { + if (*seeker == invocation) + { + *seeker = invocation->next_invocation; + + invocation->flags &= ~INVOCATION_FLAG_BOUND; + invocation->next_invocation = NULL; + invocation->subject = 0; + + return 0; + } + seeker = &((*seeker)->next_invocation); + } + + return 1; +} -- cgit v1.2.3-70-g09d2