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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.
*
* $URL$
* $Id$
*
*/
#include "sci/sci.h"
#include "sci/engine/state.h"
#include "sci/engine/selector.h"
namespace Sci {
#if 1
#define FIND_SELECTOR(_slc_) _selectorCache._slc_ = findSelector(#_slc_)
#define FIND_SELECTOR2(_slc_, _slcstr_) _selectorCache._slc_ = findSelector(_slcstr_)
#else
// The defines below can be used to construct static selector tables for games which don't have
// a vocab.997 resource, by dumping the selector table from other similar versions or games
#define FIND_SELECTOR(_slc_) _selectorCache._slc_ = findSelector(#_slc_); \
printf("\t{ \"%s\", %d },\n", #_slc_, _selectorCache._slc_)
#define FIND_SELECTOR2(_slc_, _slcstr_) _selectorCache._slc_ = findSelector(_slcstr_); \
printf("\t{ \"%s\", %d },\n", _slcstr_, _selectorCache._slc_)
#endif
void Kernel::mapSelectors() {
// species
// superClass
// -info-
FIND_SELECTOR(y);
FIND_SELECTOR(x);
FIND_SELECTOR(view);
FIND_SELECTOR(loop);
FIND_SELECTOR(cel);
FIND_SELECTOR(underBits);
FIND_SELECTOR(nsTop);
FIND_SELECTOR(nsLeft);
FIND_SELECTOR(nsBottom);
FIND_SELECTOR(lsTop);
FIND_SELECTOR(lsLeft);
FIND_SELECTOR(lsBottom);
FIND_SELECTOR(lsRight);
FIND_SELECTOR(nsRight);
FIND_SELECTOR(signal);
FIND_SELECTOR(illegalBits);
FIND_SELECTOR(brTop);
FIND_SELECTOR(brLeft);
FIND_SELECTOR(brBottom);
FIND_SELECTOR(brRight);
// name
// key
// time
FIND_SELECTOR(text);
FIND_SELECTOR(elements);
// color
// back
FIND_SELECTOR(mode);
// style
FIND_SELECTOR(state);
FIND_SELECTOR(font);
FIND_SELECTOR(type);
// window
FIND_SELECTOR(cursor);
FIND_SELECTOR(max);
// mark
// who
FIND_SELECTOR(message);
// edit
FIND_SELECTOR(play);
FIND_SELECTOR(number);
FIND_SELECTOR(handle); // nodePtr
FIND_SELECTOR(client);
FIND_SELECTOR(dx);
FIND_SELECTOR(dy);
FIND_SELECTOR2(b_movCnt, "b-moveCnt");
FIND_SELECTOR2(b_i1, "b-i1");
FIND_SELECTOR2(b_i2, "b-i2");
FIND_SELECTOR2(b_di, "b-di");
FIND_SELECTOR2(b_xAxis, "b-xAxis");
FIND_SELECTOR2(b_incr, "b-incr");
FIND_SELECTOR(xStep);
FIND_SELECTOR(yStep);
FIND_SELECTOR(moveSpeed);
FIND_SELECTOR(canBeHere); // cantBeHere
FIND_SELECTOR(heading);
FIND_SELECTOR(mover);
FIND_SELECTOR(doit);
FIND_SELECTOR(isBlocked);
FIND_SELECTOR(looper);
FIND_SELECTOR(priority);
FIND_SELECTOR(modifiers);
FIND_SELECTOR(replay);
// setPri
// at
// next
// done
// width
FIND_SELECTOR(wordFail);
FIND_SELECTOR(syntaxFail);
// semanticFail
// pragmaFail
// said
FIND_SELECTOR(claimed);
// value
// save
// restore
// title
// button
// icon
// draw
FIND_SELECTOR2(delete_, "delete");
FIND_SELECTOR(z);
// -----------------------------
FIND_SELECTOR(size);
FIND_SELECTOR(moveDone);
FIND_SELECTOR(vol);
FIND_SELECTOR(pri);
FIND_SELECTOR(min);
FIND_SELECTOR(sec);
FIND_SELECTOR(frame);
FIND_SELECTOR(dataInc);
FIND_SELECTOR(palette);
FIND_SELECTOR(cantBeHere);
FIND_SELECTOR(nodePtr);
FIND_SELECTOR(flags);
FIND_SELECTOR(points);
FIND_SELECTOR(syncCue);
FIND_SELECTOR(syncTime);
FIND_SELECTOR(printLang);
FIND_SELECTOR(subtitleLang);
FIND_SELECTOR(parseLang);
FIND_SELECTOR(overlay);
FIND_SELECTOR(setCursor);
FIND_SELECTOR(topString);
FIND_SELECTOR(scaleSignal);
FIND_SELECTOR(scaleX);
FIND_SELECTOR(scaleY);
#ifdef ENABLE_SCI32
FIND_SELECTOR(data);
FIND_SELECTOR(picture);
FIND_SELECTOR(plane);
FIND_SELECTOR(top);
FIND_SELECTOR(left);
FIND_SELECTOR(dimmed);
FIND_SELECTOR(fore);
#endif
}
reg_t read_selector(SegManager *segMan, reg_t object, Selector selector_id) {
ObjVarRef address;
if (lookup_selector(segMan, object, selector_id, &address, NULL) != kSelectorVariable)
return NULL_REG;
else
return *address.getPointer(segMan);
}
void write_selector(SegManager *segMan, reg_t object, Selector selector_id, reg_t value) {
ObjVarRef address;
if ((selector_id < 0) || (selector_id > (int)((SciEngine*)g_engine)->getKernel()->getSelectorNamesSize())) {
warning("Attempt to write to invalid selector %d of"
" object at %04x:%04x.", selector_id, PRINT_REG(object));
return;
}
if (lookup_selector(segMan, object, selector_id, &address, NULL) != kSelectorVariable)
warning("Selector '%s' of object at %04x:%04x could not be"
" written to", ((SciEngine*)g_engine)->getKernel()->getSelectorName(selector_id).c_str(), PRINT_REG(object));
else
*address.getPointer(segMan) = value;
}
int invoke_selector_argv(EngineState *s, reg_t object, int selector_id, SelectorInvocation noinvalid,
int k_argc, StackPtr k_argp, int argc, const reg_t *argv) {
int i;
int framesize = 2 + 1 * argc;
reg_t address;
int slc_type;
StackPtr stackframe = k_argp + k_argc;
stackframe[0] = make_reg(0, selector_id); // The selector we want to call
stackframe[1] = make_reg(0, argc); // Argument count
slc_type = lookup_selector(s->_segMan, object, selector_id, NULL, &address);
if (slc_type == kSelectorNone) {
warning("Selector '%s' of object at %04x:%04x could not be invoked",
s->_kernel->getSelectorName(selector_id).c_str(), PRINT_REG(object));
if (noinvalid == kStopOnInvalidSelector)
error("[Kernel] Not recoverable: VM was halted");
return 1;
}
if (slc_type == kSelectorVariable) {
warning("Attempting to invoke variable selector %s of object %04x:%04x",
s->_kernel->getSelectorName(selector_id).c_str(), PRINT_REG(object));
return 0;
}
for (i = 0; i < argc; i++)
stackframe[2 + i] = argv[i]; // Write each argument
ExecStack *xstack;
// Now commit the actual function:
xstack = send_selector(s, object, object, stackframe, framesize, stackframe);
xstack->sp += argc + 2;
xstack->fp += argc + 2;
run_vm(s, false); // Start a new vm
return 0;
}
int invoke_selector(EngineState *s, reg_t object, int selector_id, SelectorInvocation noinvalid,
int k_argc, StackPtr k_argp, int argc, ...) {
va_list argp;
reg_t *args = new reg_t[argc];
va_start(argp, argc);
for (int i = 0; i < argc; i++)
args[i] = va_arg(argp, reg_t);
va_end(argp);
int retval = invoke_selector_argv(s, object, selector_id, noinvalid, k_argc, k_argp, argc, args);
delete[] args;
return retval;
}
static int _obj_locate_varselector(SegManager *segMan, Object *obj, Selector slc) {
// Determines if obj explicitly defines slc as a varselector
// Returns -1 if not found
byte *buf;
uint varnum;
if (getSciVersion() < SCI_VERSION_1_1) {
varnum = obj->getVarCount();
int selector_name_offset = varnum * 2 + SCRIPT_SELECTOR_OFFSET;
buf = obj->_baseObj + selector_name_offset;
} else {
if (!(obj->getInfoSelector().offset & SCRIPT_INFO_CLASS))
obj = segMan->getObject(obj->getSuperClassSelector());
buf = (byte *)obj->_baseVars;
varnum = obj->getVariable(1).toUint16();
}
for (uint i = 0; i < varnum; i++)
if (READ_LE_UINT16(buf + (i << 1)) == slc) // Found it?
return i; // report success
return -1; // Failed
}
SelectorType lookup_selector(SegManager *segMan, reg_t obj_location, Selector selector_id, ObjVarRef *varp, reg_t *fptr) {
Object *obj = segMan->getObject(obj_location);
int index;
bool oldScriptHeader = (getSciVersion() == SCI_VERSION_0_EARLY);
// Early SCI versions used the LSB in the selector ID as a read/write
// toggle, meaning that we must remove it for selector lookup.
if (oldScriptHeader)
selector_id &= ~1;
if (!obj) {
error("lookup_selector(): Attempt to send to non-object or invalid script. Address was %04x:%04x",
PRINT_REG(obj_location));
}
index = _obj_locate_varselector(segMan, obj, selector_id);
if (index >= 0) {
// Found it as a variable
if (varp) {
varp->obj = obj_location;
varp->varindex = index;
}
return kSelectorVariable;
} else {
// Check if it's a method, with recursive lookup in superclasses
while (obj) {
index = obj->funcSelectorPosition(selector_id);
if (index >= 0) {
if (fptr)
*fptr = obj->getFunction(index);
return kSelectorMethod;
} else {
obj = segMan->getObject(obj->getSuperClassSelector());
}
}
return kSelectorNone;
}
// return _lookup_selector_function(segMan, obj, selector_id, fptr);
}
} // End of namespace Sci
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