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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.
*
*/
#ifndef MADE_SCRIPT_H
#define MADE_SCRIPT_H
#include "common/util.h"
#include "common/file.h"
#include "common/stream.h"
#include "common/textconsole.h"
namespace Made {
// Define this to dump all game scripts and a usage statistic of all
// opcodes/extended functions instead of running the actual game.
// Then run ScummVM with debuglevel 1.
//#define DUMP_SCRIPTS
class MadeEngine;
class ScriptFunctions;
const int kScriptStackSize = 1000;
const int kScriptStackLimit = kScriptStackSize + 1;
class ScriptStack {
public:
ScriptStack() {
for (int16 i = 0; i < kScriptStackSize; i++)
_stack[i] = 0;
_stackPos = kScriptStackSize;
}
~ScriptStack() {}
inline int16 top() { return _stack[_stackPos]; }
inline int16 pop() {
if (_stackPos == kScriptStackSize)
error("ScriptStack::pop() Stack underflow");
return _stack[_stackPos++];
}
inline void push(int16 value = 0) {
if (_stackPos == 0)
error("ScriptStack::push() Stack overflow");
_stack[--_stackPos] = value;
}
inline void setTop(int16 value) { _stack[_stackPos] = value; }
inline int16 peek(int16 index) { return _stack[index]; }
inline void poke(int16 index, int16 value) { _stack[index] = value; }
inline void alloc(int16 count) { _stackPos -= count; }
inline void free(int16 count) { _stackPos += count; }
inline int16 getStackPos() const { return _stackPos; }
inline void setStackPos(int16 stackPtr) { _stackPos = stackPtr; }
inline int16 *getStackPtr() { return &_stack[_stackPos]; }
protected:
int16 _stack[kScriptStackSize];
int16 _stackPos;
};
class ScriptInterpreter {
public:
ScriptInterpreter(MadeEngine *vm);
~ScriptInterpreter();
void runScript(int16 scriptObjectIndex);
void dumpScript(int16 objectIndex, int *opcodeStats, int *externStats);
void dumpAllScripts();
protected:
MadeEngine *_vm;
ScriptStack _stack;
int16 _localStackPos;
int16 _runningScriptObjectIndex;
byte *_codeBase, *_codeIp;
bool _terminated;
ScriptFunctions *_functions;
byte readByte();
int16 readInt16();
typedef void (ScriptInterpreter::*CommandProc)();
struct CommandEntry {
CommandProc proc;
const char *desc;
#ifdef DUMP_SCRIPTS
const char *sig;
#endif
};
const CommandEntry *_commands;
int16 _commandsMax;
void cmd_branchTrue();
void cmd_branchFalse();
void cmd_branch();
void cmd_true();
void cmd_false();
void cmd_push();
void cmd_not();
void cmd_add();
void cmd_sub();
void cmd_mul();
void cmd_div();
void cmd_mod();
void cmd_band();
void cmd_bor();
void cmd_bnot();
void cmd_lt();
void cmd_eq();
void cmd_gt();
void cmd_loadConstant();
void cmd_loadVariable();
void cmd_getObjectProperty();
void cmd_setObjectProperty();
void cmd_set();
void cmd_print();
void cmd_terpri();
void cmd_printNumber();
void cmd_vref();
void cmd_vset();
void cmd_vsize();
void cmd_exit();
void cmd_return();
void cmd_call();
void cmd_svar();
void cmd_sset();
void cmd_split();
void cmd_snlit();
void cmd_yorn();
void cmd_save();
void cmd_restore();
void cmd_arg();
void cmd_aset();
void cmd_tmp();
void cmd_tset();
void cmd_tspace();
void cmd_class();
void cmd_objectp();
void cmd_vectorp();
void cmd_restart();
void cmd_rand();
void cmd_randomize();
void cmd_send();
void cmd_extend();
void cmd_catch();
void cmd_cdone();
void cmd_throw();
void cmd_functionp();
void cmd_le();
void cmd_ge();
void cmd_varx();
void cmd_setx();
};
} // End of namespace Made
#endif /* MADE_H */
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