mirror of
https://github.com/libretro/scummvm.git
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423 lines
12 KiB
C++
423 lines
12 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "m4/woodscript.h"
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namespace M4 {
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bool (Machine::*machineCommandsTable[])(Instruction &instruction) = {
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NULL,
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NULL,//TODO: nop
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&Machine::m1_gotoState,
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&Machine::m1_jump,
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&Machine::m1_terminate,
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&Machine::m1_startSequence,
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&Machine::m1_pauseSequence,
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&Machine::m1_resumeSequence,
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&Machine::m1_storeValue,
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&Machine::m1_sendMessage,
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&Machine::m1_broadcastMessage,
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&Machine::m1_replyMessage,
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&Machine::m1_sendSystemMessage,
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&Machine::m1_createMachine,
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&Machine::m1_createMachineEx,
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&Machine::m1_clearVars
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};
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void (Machine::*machineConditionalsTable[])(Instruction &instruction) = {
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NULL,//TODO: after
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&Machine::m1_onEndSequence,
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&Machine::m1_onMessage,
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NULL,//TODO: on_p_msg
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&Machine::m1_switchLt,
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&Machine::m1_switchLe,
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&Machine::m1_switchEq,
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&Machine::m1_switchNe,
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&Machine::m1_switchGe,
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&Machine::m1_switchGt,
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};
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Machine::Machine(WoodScript *ws, int32 machineHash, Sequence *parentSeq, int32 dataHash,
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int32 dataRowIndex, int callbackHandler, Common::String machineName, int32 id) {
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_ws = ws;
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_machHash = machineHash;
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_name = machineName;
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_id = id;
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// initialize the machine's bytecode
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MachineAsset *machineAsset = _ws->assets()->getMachine(_machHash);
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byte *code;
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uint32 codeSize;
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machineAsset->getCode(code, codeSize);
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_code = new Bytecode(_ws, code, codeSize, NULL);
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// initialize the machine's data
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if (dataHash >= 0) {
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DataAsset *dataAsset = _ws->assets()->getData(dataHash);
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_dataRow = dataAsset->getRow(dataRowIndex);
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} else {
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_dataRow = NULL;
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}
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_recursionLevel = 0;
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_currentState = 0;
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_sequence = NULL;
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_parentSequence = parentSeq;
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_targetCount = 0;
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}
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Machine::~Machine() {
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delete _code;
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}
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void Machine::clearMessages() {
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}
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void Machine::clearPersistentMessages() {
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}
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void Machine::restorePersistentMessages() {
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}
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void Machine::sendMessage(uint32 messageHash, long messageValue, Machine *sender) {
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}
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void Machine::resetSwitchTime() {
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}
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bool Machine::changeSequenceProgram(int32 sequenceHash) {
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return _sequence->changeProgram(sequenceHash);
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}
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bool Machine::searchMessages(uint32 messageHash, uint32 messageValue, Machine *sender) {
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return false;
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}
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bool Machine::searchPersistentMessages(uint32 messageHash, uint32 messageValue, Machine *sender) {
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return false;
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}
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void Machine::enterState() {
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MachineAsset *machineAsset = _ws->assets()->getMachine(_machHash);
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_code->jumpAbsolute(machineAsset->getStateOffset(_currentState));
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int32 instruction = -1;
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_recursionLevel++;
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int32 oldId = _id;
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int32 oldRecursionLevel = _recursionLevel;
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while (instruction && instruction != 4 && _id == oldId && _recursionLevel == oldRecursionLevel) {
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instruction = execInstruction();
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}
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if (instruction != 4 && _id == oldId && _recursionLevel == oldRecursionLevel) {
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_recursionLevel--;
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}
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}
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int32 Machine::execInstruction() {
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//printf("Machine::execInstruction()\n"); fflush(stdout);
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bool done = false;
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Instruction instruction;
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//Sequence *sequence;
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int32 machID = _id;
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_code->loadInstruction(instruction);
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if (instruction.instr >= 64) {
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if (machineConditionalsTable[instruction.instr - 64] != NULL)
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(this->*machineConditionalsTable[instruction.instr - 64])(instruction);
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/* The next line is to yield on unimplemented opcodes */
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else { fflush(stdout); g_system->delayMillis(5000); }
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} else if (instruction.instr > 0) {
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if (machineCommandsTable[instruction.instr] != NULL)
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done = !(this->*machineCommandsTable[instruction.instr])(instruction);
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/* The next line is to yield on unimplemented opcodes */
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else { fflush(stdout); g_system->delayMillis(5000); }
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if (done) {
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if (_id == machID) {
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//TODO: Cancel all requests
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if (_currentState == -1) {
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// TODO: Set terminated flag and delete machine in WoodScript update
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}
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else {
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// initialize new state
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enterState();
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}
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}
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}
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}
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return instruction.instr;
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}
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void Machine::execBlock(int32 offset, int32 count) {
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// MachineAsset *machineAsset = _ws->assets()->getMachine(_machHash);
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int32 startOffset = offset, endOffset = offset + count;
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_recursionLevel++;
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int32 oldId = _id;
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int32 oldRecursionLevel = _recursionLevel;
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_code->jumpAbsolute(offset);
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int32 instruction = -1;
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//printf("---------------------------------------\n"); fflush(stdout);
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while (instruction && instruction != 4 && _id == oldId && _recursionLevel == oldRecursionLevel &&
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_code->pos() >= (uint32)startOffset && _code->pos() < (uint32)endOffset) {
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instruction = execInstruction();
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//g_system->delayMillis(500);
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}
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//printf("---------------------------------------\n"); fflush(stdout);
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if (instruction == 3) {
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execInstruction();
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}
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if (instruction != 4 && _id == oldId && _recursionLevel == oldRecursionLevel) {
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_recursionLevel--;
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}
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}
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bool Machine::m1_gotoState(Instruction &instruction) {
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//printf("Machine::m1_gotoState() state = %d\n", (int32)instruction.argv[0] >> 16);
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_currentState = (int32)instruction.argv[0] >> 16;
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_recursionLevel = 0;
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return false;
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}
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bool Machine::m1_jump(Instruction &instruction) {
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//printf("Machine::m1_jump() ofs = %08X\n", (int32)instruction.argv[0] >> 16);
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_code->jumpRelative((int32)instruction.argv[0] >> 16);
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return true;
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}
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bool Machine::m1_terminate(Instruction &instruction) {
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//printf("Machine::m1_terminate()\n"); fflush(stdout);
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_currentState = -1;
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_recursionLevel = 0;
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return false;
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}
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bool Machine::m1_startSequence(Instruction &instruction) {
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//printf("Machine::m1_startSequence() sequence hash = %d\n", (uint32)instruction.argv[0] >> 16); fflush(stdout);
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int32 sequenceHash = instruction.argv[0] >> 16;
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if (_sequence == NULL) {
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//printf("Machine::m1_startSequence() creating new sequence\n");
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_sequence = _ws->createSequence(this, sequenceHash);
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_code->setSequence(_sequence);
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} else {
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//printf("Machine::m1_startSequence() using existing sequence\n");
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_sequence->changeProgram(sequenceHash);
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//_code->setSequence(_sequence);
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}
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return true;
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}
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bool Machine::m1_pauseSequence(Instruction &instruction) {
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//printf("Machine::m1_pauseSequence()\n"); fflush(stdout);
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_sequence->pause();
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return true;
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}
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bool Machine::m1_resumeSequence(Instruction &instruction) {
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//printf("Machine::m1_resumeSequence()\n"); fflush(stdout);
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_sequence->resume();
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return true;
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}
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bool Machine::m1_storeValue(Instruction &instruction) {
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//printf("Machine::m1_storeValue() %p = %d (%08X)\n", (void*)instruction.argp[0], (uint32)instruction.argv[1], (uint32)instruction.argv[1]);
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*instruction.argp[0] = instruction.getValue();
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return true;
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}
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bool Machine::m1_sendMessage(Instruction &instruction) {
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//printf("Machine::m1_sendMessage() %p = %d (%08X)\n", (void*)instruction.argp[0], (uint32)instruction.argv[1], (uint32)instruction.argv[1]);
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#if 0
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//TODO
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long messageValue;
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if (instruction.argc == 3) {
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messageValue = instruction.argv[2];
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} else {
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messageValue = 0;
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}
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//_ws->sendMessage((uint32)instruction.argv[1], messageValue, (uint32)instruction.argv[0] >> 16);
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//void SendWSMessage(uint32 msgHash, long msgValue, machine *recvM, uint32 machHash, machine *sendM, int32 msgCount) {
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#endif
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return true;
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}
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bool Machine::m1_broadcastMessage(Instruction &instruction) {
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//printf("Machine::m1_broadcastMessage() %p = %d (%08X)\n", (void*)instruction.argp[0], (uint32)instruction.argv[1], (uint32)instruction.argv[1]);
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#if 0
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//TODO
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long messageValue;
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if (instruction.argc == 3) {
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messageValue = instruction.argv[2];
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} else {
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messageValue = 0;
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}
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//_ws->sendMessage((uint32)instruction.argv[1], messageValue, (uint32)instruction.argv[0] >> 16);
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#endif
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return true;
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}
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bool Machine::m1_replyMessage(Instruction &instruction) {
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//printf("Machine::m1_replyMessage() messageHash = %d; messageValue = %d\n", (uint32)instruction.argv[0], (uint32)instruction.argv[1]);
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#if 0
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if (myArg2) {
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msgValue = *myArg2;
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}
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else {
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msgValue = 0;
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}
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SendWSMessage(*myArg1, msgValue, m->msgReplyXM, 0, m, 1);
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#endif
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return true;
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}
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bool Machine::m1_sendSystemMessage(Instruction &instruction) {
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//printf("Machine::m1_sendSystemMessage() messageValue = %d\n", (uint32)instruction.argv[0]);
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#if 0
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#endif
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return true;
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}
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bool Machine::m1_createMachine(Instruction &instruction) {
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//printf("Machine::m1_createMachine()\n");
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#if 0
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#endif
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return true;
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}
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bool Machine::m1_createMachineEx(Instruction &instruction) {
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//printf("Machine::m1_createMachineEx()\n");
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#if 0
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#endif
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return true;
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}
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bool Machine::m1_clearVars(Instruction &instruction) {
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//printf("Machine::m1_clearVars()\n"); fflush(stdout);
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_sequence->clearVars();
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return true;
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}
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void Machine::m1_onEndSequence(Instruction &instruction) {
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//printf("Machine::m1_onEndSequence() count = %08X\n", (uint32)instruction.argv[0] >> 16); fflush(stdout);
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int32 count = instruction.argv[0] >> 16;
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_sequence->issueEndOfSequenceRequest(_code->pos(), count);
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_code->jumpRelative(count);
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}
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void Machine::m1_onMessage(Instruction &instruction) {
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//printf("Machine::m1_onEndSequence() count = %08X\n", (uint32)instruction.argv[0] >> 16); fflush(stdout);
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// TODO: Add message to list
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int32 count = instruction.argv[0] >> 16;
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_code->jumpRelative(count);
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}
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void Machine::m1_switchLt(Instruction &instruction) {
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//printf("Machine::m1_switchLt() %d < %d -> %08X\n", (uint32)instruction.argv[1], (uint32)instruction.argv[2], (uint32)instruction.argv[0] >> 16); fflush(stdout);
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if (instruction.argv[1] >= instruction.argv[2])
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_code->jumpRelative(instruction.argv[0] >> 16);
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}
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void Machine::m1_switchLe(Instruction &instruction) {
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//printf("Machine::m1_switchLe() %d <= %d -> %08X\n", (uint32)instruction.argv[1], (uint32)instruction.argv[2], (uint32)instruction.argv[0] >> 16); fflush(stdout);
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if (instruction.argv[1] > instruction.argv[2])
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_code->jumpRelative(instruction.argv[0] >> 16);
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}
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void Machine::m1_switchEq(Instruction &instruction) {
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//printf("Machine::m1_switchEq() %d == %d -> %08X\n", (uint32)instruction.argv[1], (uint32)instruction.argv[2], (uint32)instruction.argv[0] >> 16); fflush(stdout);
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if (instruction.argv[1] != instruction.argv[2])
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_code->jumpRelative(instruction.argv[0] >> 16);
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}
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void Machine::m1_switchNe(Instruction &instruction) {
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//printf("Machine::m1_switchNe() %d != %d -> %08X\n", (uint32)instruction.argv[1], (uint32)instruction.argv[2], (uint32)instruction.argv[0] >> 16); fflush(stdout);
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if (instruction.argv[1] == instruction.argv[2])
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_code->jumpRelative(instruction.argv[0] >> 16);
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}
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void Machine::m1_switchGe(Instruction &instruction) {
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//printf("Machine::m1_switchGe() %d >= %d -> %08X\n", (uint32)instruction.argv[1], (uint32)instruction.argv[2], (uint32)instruction.argv[0] >> 16); fflush(stdout);
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if (instruction.argv[1] < instruction.argv[2])
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_code->jumpRelative(instruction.argv[0] >> 16);
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}
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void Machine::m1_switchGt(Instruction &instruction) {
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//printf("Machine::m1_switchGt() %d > %d -> %08X\n", (uint32)instruction.argv[1], (uint32)instruction.argv[2], (uint32)instruction.argv[0] >> 16); fflush(stdout);
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if (instruction.argv[1] <= instruction.argv[2])
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_code->jumpRelative(instruction.argv[0] >> 16);
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}
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}
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