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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "sci/engine/message.h"
#include "sci/tools.h"
namespace Sci {
#if 0
// Unreferenced - removed
static int get_talker_trivial(index_record_cursor_t *cursor) {
return -1;
}
#endif
/* Version 2.101 and later code ahead */
#if 0
// Unreferenced - removed
static void index_record_parse_2101(index_record_cursor_t *cursor, message_tuple_t *t) {
int noun = *(cursor->index_record + 0);
int verb = *(cursor->index_record + 1);
t->noun = noun;
t->verb = verb;
t->cond = t->seq = 0;
}
#endif
#if 0
// Unreferenced - removed
static void index_record_get_text_2101(index_record_cursor_t *cursor, char *buffer, int buffer_size) {
int offset = getUInt16(cursor->index_record + 2);
char *stringptr = (char *)cursor->resource_beginning + offset;
strncpy(buffer, stringptr, buffer_size);
}
#endif
#if 0
// Unreferenced - removed
static int header_get_index_record_count_2101(byte *header) {
return getUInt16(header + 4);
}
#endif
// Version 3.411 and later code ahead
static void index_record_parse_3411(index_record_cursor_t *cursor, message_tuple_t *t) {
int noun = *(cursor->index_record + 0);
int verb = *(cursor->index_record + 1);
int cond = *(cursor->index_record + 2);
int seq = *(cursor->index_record + 3);
t->noun = noun;
t->verb = verb;
t->cond = cond;
t->seq = seq;
}
static int index_record_get_talker_3411(index_record_cursor_t *cursor) {
return *(cursor->index_record + 4);
}
static void index_record_get_text_3411(index_record_cursor_t *cursor, char *buffer, int buffer_size) {
int offset = getUInt16(cursor->index_record + 5);
char *stringptr = (char *)cursor->resource_beginning + offset;
strncpy(buffer, stringptr, buffer_size);
}
static int header_get_index_record_count_3411(byte *header) {
return getUInt16(header + 8);
}
// Generic code from here on
static int four_tuple_match(message_tuple_t *t1, message_tuple_t *t2) {
return t1->noun == t2->noun && t1->verb == t2->verb && t1->cond == t2->cond && t1->seq == t2->seq;
}
static void index_record_cursor_initialize(message_state_t *state, index_record_cursor_t *cursor) {
cursor->resource_beginning = state->current_res->data;
cursor->index_record = state->index_records;
cursor->index = 1;
}
static int index_record_next(message_state_t *state, index_record_cursor_t *cursor) {
if (cursor->index == state->record_count)
return 0;
cursor->index_record += state->handler->index_record_size;
cursor->index ++;
return 1;
}
static int index_record_find(message_state_t *state, message_tuple_t *t, index_record_cursor_t *cursor) {
message_tuple_t looking_at;
int found = 0;
index_record_cursor_initialize(state, cursor);
do {
state->handler->parse(cursor, &looking_at);
if (four_tuple_match(t, &looking_at))
found = 1;
} while (!found && index_record_next(state, cursor));
// FIXME: Recursion not handled yet
return found;
}
int message_get_specific(message_state_t *state, message_tuple_t *t) {
return index_record_find(state, t, &state->engine_cursor);
}
int message_get_next(message_state_t *state) {
return index_record_next(state, &state->engine_cursor);
}
int message_get_talker(message_state_t *state) {
return state->handler->get_talker(&state->engine_cursor);
}
int message_get_text(message_state_t *state, char *buffer, int length) {
state->handler->get_text(&state->engine_cursor, buffer, length);
return strlen(buffer);
}
int message_get_length(message_state_t *state) {
char buffer[500];
state->handler->get_text(&state->engine_cursor, buffer, sizeof(buffer));
return strlen(buffer);
}
int message_state_load_res(message_state_t *state, int module) {
if (state->module == module)
return 1;
state->module = module;
state->current_res = scir_find_resource(state->resmgr, sci_message, module, 0);
if (state->current_res == NULL || state->current_res->data == NULL) {
sciprintf("Message subsystem: Failed to load %d.MSG\n", module);
return 0;
}
state->record_count = state->handler->index_record_count(state->current_res->data);
state->index_records = state->current_res->data + state->handler->header_size;
index_record_cursor_initialize(state, &state->engine_cursor);
return 1;
}
static message_handler_t fixed_handler = {
3411,
index_record_parse_3411,
index_record_get_talker_3411,
index_record_get_text_3411,
header_get_index_record_count_3411,
10,
11
};
void message_state_initialize(ResourceManager *resmgr, message_state_t *state) {
//resource_t *tester = scir_find_resource(resmgr, sci_message, 0, 0);
//int version;
//if (tester == NULL)
// return;
//version = getUInt16(tester->data);
state->initialized = 1;
state->module = -1;
state->resmgr = resmgr;
state->current_res = NULL;
state->record_count = 0;
state->handler = &fixed_handler;
}
} // End of namespace Sci
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