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-rw-r--r--engines/sci/engine/kstring.cpp4
-rw-r--r--engines/sci/engine/message.cpp187
-rw-r--r--engines/sci/engine/message.h35
3 files changed, 87 insertions, 139 deletions
diff --git a/engines/sci/engine/kstring.cpp b/engines/sci/engine/kstring.cpp
index ca5cd09a39..36a3f992f3 100644
--- a/engines/sci/engine/kstring.cpp
+++ b/engines/sci/engine/kstring.cpp
@@ -727,7 +727,7 @@ reg_t kGetFarText(EngineState *s, int funct_nr, int argc, reg_t *argv) {
static MessageState state;
reg_t kMessage(EngineState *s, int funct_nr, int argc, reg_t *argv) {
- if (!state.initialized)
+ if (!state.isInitialized())
message_state_initialize(s->resmgr, &state);
switch (UKPV(0)) {
@@ -782,7 +782,7 @@ reg_t kMessage(EngineState *s, int funct_nr, int argc, reg_t *argv) {
}
reg_t kGetMessage(EngineState *s, int funct_nr, int argc, reg_t *argv) {
- if (!state.initialized)
+ if (!state.isInitialized())
message_state_initialize(s->resmgr, &state);
char *buffer = kernel_dereference_char_pointer(s, argv[3], 0);
diff --git a/engines/sci/engine/message.cpp b/engines/sci/engine/message.cpp
index fac6260f90..6766224247 100644
--- a/engines/sci/engine/message.cpp
+++ b/engines/sci/engine/message.cpp
@@ -28,120 +28,87 @@
namespace Sci {
-static int get_talker_trivial(IndexRecordCursor *cursor) {
- return -1;
+void MessageState::initIndexRecordCursor() {
+ _engineCursor.resource_beginning = _currentResource->data;
+ _engineCursor.index_record = _indexRecords;
+ _engineCursor.index = 1;
}
-/* Version 2.101 and later code ahead */
+void MessageState::setVersion(int version) {
+ _version = version;
-static void index_record_parse_2101(IndexRecordCursor *cursor, MessageTuple *t) {
- int noun = *(cursor->index_record + 0);
- int verb = *(cursor->index_record + 1);
-
- t->noun = noun;
- t->verb = verb;
- t->cond = t->seq = 0;
-}
-
-static void index_record_get_text_2101(IndexRecordCursor *cursor, char *buffer, int buffer_size) {
- int offset = READ_LE_UINT16(cursor->index_record + 2);
- char *stringptr = (char *)cursor->resource_beginning + offset;
-
- strncpy(buffer, stringptr, buffer_size);
-}
-
-static int header_get_index_record_count_2101(byte *header) {
- return READ_LE_UINT16(header + 4);
-}
-
-// Version 3.411 and later code ahead
-
-static void index_record_parse_3411(IndexRecordCursor *cursor, MessageTuple *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(IndexRecordCursor *cursor) {
- return *(cursor->index_record + 4);
-}
-
-static void index_record_get_text_3411(IndexRecordCursor *cursor, char *buffer, int buffer_size) {
- int offset = READ_LE_UINT16(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 READ_LE_UINT16(header + 8);
-}
-
-// Generic code from here on
-
-static int four_tuple_match(MessageTuple *t1, MessageTuple *t2) {
- return t1->noun == t2->noun && t1->verb == t2->verb && t1->cond == t2->cond && t1->seq == t2->seq;
-}
-
-static void index_record_cursor_initialize(MessageState *state, IndexRecordCursor *cursor) {
- cursor->resource_beginning = state->current_res->data;
- cursor->index_record = state->index_records;
- cursor->index = 1;
+ if (version == 2101) {
+ _headerSize = 6;
+ _indexRecordSize = 4;
+ } else {
+ _headerSize = 10;
+ _indexRecordSize = 11;
+ }
}
-static int index_record_next(MessageState *state, IndexRecordCursor *cursor) {
- if (cursor->index == state->record_count)
- return 0;
- cursor->index_record += state->handler->index_record_size;
- cursor->index ++;
- return 1;
+void MessageState::parse(IndexRecordCursor *cursor, MessageTuple *t) {
+ t->noun = *(cursor->index_record + 0);
+ t->verb = *(cursor->index_record + 1);
+ if (_version == 2101) {
+ t->cond = 0;
+ t->seq = 0;
+ } else {
+ t->cond = *(cursor->index_record + 2);
+ t->seq = *(cursor->index_record + 3);
+ }
}
-static int index_record_find(MessageState *state, MessageTuple *t, IndexRecordCursor *cursor) {
+int MessageState::getSpecific(MessageTuple *t) {
MessageTuple looking_at;
int found = 0;
- index_record_cursor_initialize(state, cursor);
+ initIndexRecordCursor();
do {
- state->handler->parse(cursor, &looking_at);
- if (four_tuple_match(t, &looking_at))
+ parse(&_engineCursor, &looking_at);
+ if (t->noun == looking_at.noun &&
+ t->verb == looking_at.verb &&
+ t->cond == looking_at.cond &&
+ t->seq == looking_at.seq)
found = 1;
- } while (!found && index_record_next(state, cursor));
+ } while (!found && getNext());
// FIXME: Recursion not handled yet
return found;
}
-int MessageState::getSpecific(MessageTuple *t) {
- return index_record_find(this, t, &engine_cursor);
-}
-
int MessageState::getNext() {
- return index_record_next(this, &engine_cursor);
+ if (_engineCursor.index == _recordCount)
+ return 0;
+ _engineCursor.index_record += _indexRecordSize;
+ _engineCursor.index ++;
+ return 1;
}
int MessageState::getTalker() {
- return handler->get_talker(&engine_cursor);
+ if (_version == 2101)
+ return -1;
+ else
+ return *(_engineCursor.index_record + 4);
}
int MessageState::getText(char *buffer, int length) {
- handler->get_text(&engine_cursor, buffer, length);
+ int offset;
+ if (_version == 2101)
+ offset = READ_LE_UINT16(_engineCursor.index_record + 2);
+ else
+ offset = READ_LE_UINT16(_engineCursor.index_record + 5);
+
+ char *stringptr = (char *)_engineCursor.resource_beginning + offset;
+ strncpy(buffer, stringptr, length);
+
return strlen(buffer);
}
int MessageState::getLength() {
char buffer[500];
-
- handler->get_text(&engine_cursor, buffer, sizeof(buffer));
- return strlen(buffer);
+ return getText(buffer, sizeof(buffer));
}
int MessageState::loadRes(int module) {
@@ -150,43 +117,35 @@ int MessageState::loadRes(int module) {
// Unlock old resource
if (_module != -1)
- resmgr->unlockResource(current_res, _module, kResourceTypeMessage);
+ _resmgr->unlockResource(_currentResource, _module, kResourceTypeMessage);
_module = module;
- current_res = resmgr->findResource(kResourceTypeMessage, module, 1);
+ _currentResource = _resmgr->findResource(kResourceTypeMessage, module, 1);
- if (current_res == NULL || current_res->data == NULL) {
+ if (_currentResource == NULL || _currentResource->data == NULL) {
sciprintf("Message subsystem: Failed to load %d.MSG\n", module);
_module = -1;
return 0;
}
- record_count = handler->index_record_count(current_res->data);
- index_records = current_res->data + handler->header_size;
+ if (_version == 2101)
+ _recordCount = READ_LE_UINT16(_currentResource->data + 4);
+ else
+ _recordCount = READ_LE_UINT16(_currentResource->data + 8);
+
+ _indexRecords = _currentResource->data + _headerSize;
- index_record_cursor_initialize(this, &engine_cursor);
+ initIndexRecordCursor();
return 1;
}
-static MessageHandler fixed_handler_old = {
- 2101,
- index_record_parse_2101,
- get_talker_trivial,
- index_record_get_text_2101,
- header_get_index_record_count_2101,
- 6,
- 4
-};
-
-static MessageHandler 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 MessageState::initialize(ResourceManager *resmgr) {
+ _module = -1;
+ _resmgr = resmgr;
+ _currentResource = NULL;
+ _recordCount = 0;
+ _initialized = 1;
+}
void message_state_initialize(ResourceManager *resmgr, MessageState *state) {
Resource *tester = resmgr->findResource(kResourceTypeMessage, 0, 0);
@@ -196,16 +155,8 @@ void message_state_initialize(ResourceManager *resmgr, MessageState *state) {
return;
version = READ_LE_UINT16(tester->data);
-
- state->initialized = 1;
- state->_module = -1;
- state->resmgr = resmgr;
- state->current_res = NULL;
- state->record_count = 0;
- if (version == 2101)
- state->handler = &fixed_handler_old;
- else
- state->handler = &fixed_handler;
+ state->initialize(resmgr);
+ state->setVersion(version);
}
} // End of namespace Sci
diff --git a/engines/sci/engine/message.h b/engines/sci/engine/message.h
index 70012cbfbc..9f5b04cf7e 100644
--- a/engines/sci/engine/message.h
+++ b/engines/sci/engine/message.h
@@ -49,17 +49,6 @@ typedef int get_talker_t(IndexRecordCursor *cursor);
typedef void get_text_t(IndexRecordCursor *cursor, char *buffer, int buffer_size);
typedef int index_record_count_t(byte *header);
-struct MessageHandler {
- int version_id;
- parse_index_record_t *parse;
- get_talker_t *get_talker;
- get_text_t *get_text;
- index_record_count_t *index_record_count;
-
- int header_size;
- int index_record_size;
-};
-
class MessageState {
public:
int getSpecific(MessageTuple *t);
@@ -68,16 +57,24 @@ public:
int getLength();
int getText(char *buffer, int length);
int loadRes(int module);
+ int isInitialized() { return _initialized; }
+ void initialize(ResourceManager *resmgr);
+ void setVersion(int version);
+
+private:
+ void initIndexRecordCursor();
+ void parse(IndexRecordCursor *cursor, MessageTuple *t);
-public: // TODO: hide the internals
- int initialized;
- MessageHandler *handler;
- ResourceManager *resmgr;
- Resource *current_res;
+ int _initialized;
+ ResourceManager *_resmgr;
+ Resource *_currentResource;
int _module;
- int record_count;
- byte *index_records;
- IndexRecordCursor engine_cursor;
+ int _recordCount;
+ byte *_indexRecords;
+ IndexRecordCursor _engineCursor;
+ int _version;
+ int _headerSize;
+ int _indexRecordSize;
};
void message_state_initialize(ResourceManager *resmgr, MessageState *state);
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 02:09:27 +0000