mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-26 03:37:53 +00:00
421 lines
7.9 KiB
C++
421 lines
7.9 KiB
C++
/* ScummVM - Scumm Interpreter
|
|
* Copyright (C) 2004 Ivan Dubrov
|
|
* Copyright (C) 2004-2006 The ScummVM project
|
|
*
|
|
* 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 "gob/gob.h"
|
|
#include "gob/global.h"
|
|
#include "gob/game.h"
|
|
#include "gob/parse.h"
|
|
#include "gob/util.h"
|
|
#include "gob/inter.h"
|
|
|
|
namespace Gob {
|
|
|
|
Parse::Parse(GobEngine *vm) : _vm(vm) {
|
|
}
|
|
|
|
int32 Parse::encodePtr(char *ptr, int type) {
|
|
int32 offset;
|
|
|
|
switch (type) {
|
|
case kExecPtr:
|
|
offset = ptr - _vm->_game->_totFileData;
|
|
break;
|
|
case kInterVar:
|
|
offset = ptr - _vm->_global->_inter_variables;
|
|
break;
|
|
case kResStr:
|
|
offset = ptr - _vm->_global->_inter_resStr;
|
|
break;
|
|
default:
|
|
error("encodePtr: Unknown pointer type");
|
|
}
|
|
assert((offset & 0xF0000000) == 0);
|
|
return (type << 28) | offset;
|
|
}
|
|
|
|
char *Parse::decodePtr(int32 n) {
|
|
char *ptr;
|
|
|
|
switch (n >> 28) {
|
|
case kExecPtr:
|
|
ptr = _vm->_game->_totFileData;
|
|
break;
|
|
case kInterVar:
|
|
ptr = _vm->_global->_inter_variables;
|
|
break;
|
|
case kResStr:
|
|
ptr = _vm->_global->_inter_resStr;
|
|
break;
|
|
default:
|
|
error("decodePtr: Unknown pointer type");
|
|
}
|
|
return ptr + (n & 0x0FFFFFFF);
|
|
}
|
|
|
|
void Parse::skipExpr(char stopToken) {
|
|
int16 dimCount;
|
|
char operation;
|
|
int16 num;
|
|
int16 dim;
|
|
|
|
num = 0;
|
|
while (1) {
|
|
operation = *_vm->_global->_inter_execPtr++;
|
|
|
|
if (operation >= 19 && operation <= 29) {
|
|
switch (operation) {
|
|
case 20:
|
|
case 23:
|
|
_vm->_global->_inter_execPtr += 2;
|
|
break;
|
|
|
|
case 19:
|
|
_vm->_global->_inter_execPtr += 4;
|
|
break;
|
|
|
|
case 22:
|
|
_vm->_global->_inter_execPtr += strlen(_vm->_global->_inter_execPtr) + 1;
|
|
break;
|
|
|
|
case 25:
|
|
_vm->_global->_inter_execPtr += 2;
|
|
if (*_vm->_global->_inter_execPtr == 13) {
|
|
_vm->_global->_inter_execPtr++;
|
|
skipExpr(12);
|
|
}
|
|
break;
|
|
|
|
case 26:
|
|
case 28:
|
|
dimCount = _vm->_global->_inter_execPtr[2];
|
|
_vm->_global->_inter_execPtr += 3 + dimCount; // ???
|
|
for (dim = 0; dim < dimCount; dim++)
|
|
skipExpr(12);
|
|
|
|
if (operation == 28 && *_vm->_global->_inter_execPtr == 13) {
|
|
_vm->_global->_inter_execPtr++;
|
|
skipExpr(12);
|
|
}
|
|
break;
|
|
|
|
case 29:
|
|
_vm->_global->_inter_execPtr++;
|
|
skipExpr(10);
|
|
}
|
|
continue;
|
|
} // if (operation >= 19 && operation <= 29)
|
|
|
|
if (operation == 9) {
|
|
num++;
|
|
continue;
|
|
}
|
|
|
|
if (operation == 11 || (operation >= 1 && operation <= 8))
|
|
continue;
|
|
|
|
if (operation >= 30 && operation <= 37)
|
|
continue;
|
|
|
|
if (operation == 10)
|
|
num--;
|
|
|
|
if (operation != stopToken)
|
|
continue;
|
|
|
|
if (stopToken != 10 || num < 0)
|
|
return;
|
|
}
|
|
}
|
|
|
|
void Parse::printExpr(char stopToken) {
|
|
int16 dimCount;
|
|
char operation;
|
|
int16 num;
|
|
int16 dim;
|
|
char *arrDesc;
|
|
char func;
|
|
char saved = 0;
|
|
static char *savedPos = 0;
|
|
|
|
if (savedPos == 0) {
|
|
savedPos = _vm->_global->_inter_execPtr;
|
|
saved = 1;
|
|
}
|
|
|
|
num = 0;
|
|
while (1) {
|
|
operation = *_vm->_global->_inter_execPtr++;
|
|
|
|
if (operation >= 19 && operation <= 29) {
|
|
switch (operation) {
|
|
case 19:
|
|
debugN(5, "%l", READ_LE_UINT32(_vm->_global->_inter_execPtr));
|
|
_vm->_global->_inter_execPtr += 4;
|
|
break;
|
|
|
|
case 20:
|
|
debugN(5, "%d", _vm->_inter->load16());
|
|
break;
|
|
|
|
case 22:
|
|
debugN(5, "\42%s\42", _vm->_global->_inter_execPtr);
|
|
_vm->_global->_inter_execPtr += strlen(_vm->_global->_inter_execPtr) + 1;
|
|
break;
|
|
|
|
case 23:
|
|
{
|
|
int16 varnum = _vm->_inter->load16();
|
|
debugN(5, "var_%d (val=%d)", varnum, READ_LE_UINT32(_vm->_global->_inter_variables + varnum * 4) );
|
|
break;
|
|
}
|
|
case 25:
|
|
debugN(5, "(&var_%d)", _vm->_inter->load16());
|
|
if (*_vm->_global->_inter_execPtr == 13) {
|
|
_vm->_global->_inter_execPtr++;
|
|
debugN(5, "{");
|
|
printExpr(12);
|
|
debugN(5, "}");
|
|
}
|
|
break;
|
|
|
|
case 26:
|
|
case 28:
|
|
if (operation == 28)
|
|
debugN(5, "(&");
|
|
|
|
debugN(5, "var_%d[", _vm->_inter->load16());
|
|
dimCount = *_vm->_global->_inter_execPtr++;
|
|
arrDesc = _vm->_global->_inter_execPtr;
|
|
_vm->_global->_inter_execPtr += dimCount;
|
|
for (dim = 0; dim < dimCount; dim++) {
|
|
printExpr(12);
|
|
debugN(5, " of %d", (int16)arrDesc[dim]);
|
|
if (dim != dimCount - 1)
|
|
debugN(5, ",");
|
|
}
|
|
debugN(5, "]");
|
|
if (operation == 28)
|
|
debugN(5, ")");
|
|
|
|
if (operation == 28 && *_vm->_global->_inter_execPtr == 13) {
|
|
_vm->_global->_inter_execPtr++;
|
|
debugN(5, "{");
|
|
printExpr(12);
|
|
// debugN(5, "}");
|
|
}
|
|
break;
|
|
|
|
case 29:
|
|
func = *_vm->_global->_inter_execPtr++;
|
|
if (func == 5)
|
|
debugN(5, "sqr(");
|
|
else if (func == 10)
|
|
debugN(5, "rand(");
|
|
else if (func == 7)
|
|
debugN(5, "abs(");
|
|
else if (func == 0 || func == 1 || func == 6)
|
|
debugN(5, "sqrt(");
|
|
else
|
|
debugN(5, "id(");
|
|
printExpr(10);
|
|
break;
|
|
|
|
default:
|
|
debugN(5, "<%d>", (int16)operation);
|
|
break;
|
|
}
|
|
continue;
|
|
} // if (operation >= 19 && operation <= 29)
|
|
switch (operation) {
|
|
case 9:
|
|
debugN(5, "(");
|
|
break;
|
|
|
|
case 11:
|
|
debugN(5, "!");
|
|
break;
|
|
|
|
case 10:
|
|
debugN(5, ")");
|
|
break;
|
|
|
|
case 1:
|
|
debugN(5, "-");
|
|
break;
|
|
|
|
case 2:
|
|
debugN(5, "+");
|
|
break;
|
|
|
|
case 3:
|
|
debugN(5, "-");
|
|
break;
|
|
|
|
case 4:
|
|
debugN(5, "|");
|
|
break;
|
|
|
|
case 5:
|
|
debugN(5, "*");
|
|
break;
|
|
|
|
case 6:
|
|
debugN(5, "/");
|
|
break;
|
|
|
|
case 7:
|
|
debugN(5, "%");
|
|
break;
|
|
|
|
case 8:
|
|
debugN(5, "&");
|
|
break;
|
|
|
|
case 30:
|
|
debugN(5, "||");
|
|
break;
|
|
|
|
case 31:
|
|
debugN(5, "&&");
|
|
break;
|
|
|
|
case 32:
|
|
debugN(5, "<");
|
|
break;
|
|
|
|
case 33:
|
|
debugN(5, "<=");
|
|
break;
|
|
|
|
case 34:
|
|
debugN(5, ">");
|
|
break;
|
|
|
|
case 35:
|
|
debugN(5, ">=");
|
|
break;
|
|
|
|
case 36:
|
|
debugN(5, "==");
|
|
break;
|
|
|
|
case 37:
|
|
debugN(5, "!=");
|
|
break;
|
|
|
|
case 99:
|
|
debugN(5, "\n");
|
|
break;
|
|
|
|
case 12:
|
|
debugN(5, "}");
|
|
if (stopToken != 12) {
|
|
debugN(5, "Closing paren without opening?");
|
|
}
|
|
break;
|
|
|
|
default:
|
|
debugN(5, "<%d>", (int16)operation);
|
|
break;
|
|
}
|
|
|
|
if (operation == 9) {
|
|
num++;
|
|
continue;
|
|
}
|
|
|
|
if (operation == 11 || (operation >= 1 && operation <= 8))
|
|
continue;
|
|
|
|
if (operation >= 30 && operation <= 37)
|
|
continue;
|
|
|
|
if (operation == 10)
|
|
num--;
|
|
|
|
if (operation == stopToken) {
|
|
if (stopToken != 10 || num < 0) {
|
|
|
|
if (saved != 0) {
|
|
_vm->_global->_inter_execPtr = savedPos;
|
|
savedPos = 0;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Parse::printVarIndex() {
|
|
char *arrDesc;
|
|
int16 dim;
|
|
int16 dimCount;
|
|
int16 operation;
|
|
int16 temp;
|
|
|
|
char *pos = _vm->_global->_inter_execPtr;
|
|
|
|
operation = *_vm->_global->_inter_execPtr++;
|
|
switch (operation) {
|
|
case 23:
|
|
case 25:
|
|
temp = _vm->_inter->load16() * 4;
|
|
debugN(5, "&var_%d", temp);
|
|
if (operation == 25 && *_vm->_global->_inter_execPtr == 13) {
|
|
_vm->_global->_inter_execPtr++;
|
|
debugN(5, "+");
|
|
printExpr(12);
|
|
}
|
|
break;
|
|
|
|
case 26:
|
|
case 28:
|
|
debugN(5, "&var_%d[", _vm->_inter->load16());
|
|
dimCount = *_vm->_global->_inter_execPtr++;
|
|
arrDesc = _vm->_global->_inter_execPtr;
|
|
_vm->_global->_inter_execPtr += dimCount;
|
|
for (dim = 0; dim < dimCount; dim++) {
|
|
printExpr(12);
|
|
debugN(5, " of %d", (int16)arrDesc[dim]);
|
|
if (dim != dimCount - 1)
|
|
debugN(5, ",");
|
|
}
|
|
debugN(5, "]");
|
|
|
|
if (operation == 28 && *_vm->_global->_inter_execPtr == 13) {
|
|
_vm->_global->_inter_execPtr++;
|
|
debugN(5, "+");
|
|
printExpr(12);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
debugN(5, "var_0");
|
|
break;
|
|
}
|
|
debugN(5, "\n");
|
|
_vm->_global->_inter_execPtr = pos;
|
|
return;
|
|
}
|
|
|
|
} // End of namespace Gob
|