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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2004-2006 The ScummVM project
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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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#ifndef KYRASCRIPT_H
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#define KYRASCRIPT_H
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#include "kyra/kyra.h"
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namespace Kyra {
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struct ScriptData {
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byte *text;
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byte *data;
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byte *ordr;
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uint16 dataSize;
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KyraEngine::OpcodeProc *opcodes;
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int opcodeSize;
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uint16 mustBeFreed;
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};
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struct ScriptState {
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byte *ip;
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ScriptData *dataPtr;
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int16 retValue;
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uint16 bp;
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uint16 sp;
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int16 variables[30];
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int16 stack[61];
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};
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enum {
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SCRIPT_INIT = 0
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};
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class ScriptHelper {
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public:
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ScriptHelper(KyraEngine *vm);
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virtual ~ScriptHelper();
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bool loadScript(const char *filename, ScriptData *data, KyraEngine::OpcodeProc *opcodes, int opcodeSize, byte *specialPtr = 0);
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void unloadScript(ScriptData *data);
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void initScript(ScriptState *scriptState, ScriptData *data);
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bool startScript(ScriptState *script, int function);
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bool validScript(ScriptState *script);
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bool runScript(ScriptState *script);
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protected:
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uint32 getFORMBlockSize(byte *&data) const;
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uint32 getIFFBlockSize(byte *start, byte *&data, uint32 maxSize, const uint32 chunk) const;
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bool loadIFFBlock(byte *start, byte *&data, uint32 maxSize, const uint32 chunk, byte *loadTo, uint32 ptrSize) const;
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KyraEngine *_vm;
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int16 _parameter;
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bool _continue;
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typedef void (ScriptHelper::*CommandProc)(ScriptState*);
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struct CommandEntry {
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CommandProc proc;
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const char* desc;
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};
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const CommandEntry *_commands;
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private:
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void c1_jmpTo(ScriptState*);
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void c1_setRetValue(ScriptState*);
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void c1_pushRetOrPos(ScriptState*);
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void c1_push(ScriptState*);
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//void c1_push(); same as 03
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void c1_pushVar(ScriptState*);
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void c1_pushBPNeg(ScriptState*);
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void c1_pushBPAdd(ScriptState*);
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void c1_popRetOrPos(ScriptState*);
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void c1_popVar(ScriptState*);
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void c1_popBPNeg(ScriptState*);
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void c1_popBPAdd(ScriptState*);
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void c1_addSP(ScriptState*);
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void c1_subSP(ScriptState*);
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void c1_execOpcode(ScriptState*);
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void c1_ifNotJmp(ScriptState*);
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void c1_negate(ScriptState*);
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void c1_eval(ScriptState*);
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void c1_setRetAndJmp(ScriptState*);
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};
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} // end of namespace Kyra
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#endif
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