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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.
*
*/
#include "common/system.h"
#include "sci/sci.h"
#include "sci/debug.h"
#include "sci/event.h"
#include "sci/engine/state.h"
#include "sci/engine/kernel.h"
#include "sci/engine/gc.h"
#include "sci/graphics/cursor.h"
#include "sci/graphics/maciconbar.h"
#include "sci/console.h"
namespace Sci {
reg_t kRestartGame(EngineState *s, int argc, reg_t *argv) {
s->shrinkStackToBase();
s->abortScriptProcessing = kAbortRestartGame; // Force vm to abort ASAP
return NULL_REG;
}
/* kGameIsRestarting():
** Returns the restarting_flag in acc
*/
reg_t kGameIsRestarting(EngineState *s, int argc, reg_t *argv) {
s->r_acc = make_reg(0, s->gameIsRestarting);
if (argc) { // Only happens during replay
if (!argv[0].toUint16()) // Set restarting flag
s->gameIsRestarting = GAMEISRESTARTING_NONE;
}
uint32 neededSleep = 30;
// WORKAROUNDS for scripts that are polling too quickly in scenes that
// are not animating much
switch (g_sci->getGameId()) {
case GID_CASTLEBRAIN:
// In Castle of Dr. Brain, memory color matching puzzle in the first
// room (room 100), the game scripts constantly poll the state of each
// stone when the user clicks on one. Since the scene is not animating
// much, this results in activating and deactivating each stone very
// quickly (together with its associated tone sound), depending on how
// low it is in the animate list. This worked somewhat in older PCs, but
// not in modern computers. We throttle the scene in order to allow the
// stones to display, otherwise the game scripts reset them too soon.
// Fixes bug #3127824.
if (s->currentRoomNumber() == 100) {
s->_throttleTrigger = true;
neededSleep = 60;
}
break;
case GID_ICEMAN:
// In ICEMAN the submarine control room is not animating much, so it
// runs way too fast. We calm it down even more, otherwise fighting
// against other submarines is almost impossible.
if (s->currentRoomNumber() == 27) {
s->_throttleTrigger = true;
neededSleep = 60;
}
break;
case GID_LSL3:
// LSL3 calculates a machinespeed variable during game startup
// (right after the filthy questions). This one would go through w/o
// throttling resulting in having to do 1000 pushups or something. Another
// way of handling this would be delaying incrementing of "machineSpeed"
// selector.
if (s->currentRoomNumber() == 290)
s->_throttleTrigger = true;
break;
case GID_SQ4:
// In SQ4 (floppy and CD) the sequel police appear way too quickly in
// the Skate-o-rama rooms, resulting in all sorts of timer issues, like
// #3109139 (which occurs because a police officer instantly teleports
// just before Roger exits and shoots him). We throttle these scenes a
// bit more, in order to prevent timer bugs related to the sequel police.
if (s->currentRoomNumber() == 405 || s->currentRoomNumber() == 406 ||
s->currentRoomNumber() == 410 || s->currentRoomNumber() == 411) {
s->_throttleTrigger = true;
neededSleep = 60;
}
default:
break;
}
s->speedThrottler(neededSleep);
return s->r_acc;
}
reg_t kHaveMouse(EngineState *s, int argc, reg_t *argv) {
return SIGNAL_REG;
}
enum kMemoryInfoFunc {
K_MEMORYINFO_LARGEST_HEAP_BLOCK = 0, // Largest heap block available
K_MEMORYINFO_FREE_HEAP = 1, // Total free heap memory
K_MEMORYINFO_LARGEST_HUNK_BLOCK = 2, // Largest available hunk memory block
K_MEMORYINFO_FREE_HUNK = 3, // Amount of free DOS paragraphs
K_MEMORYINFO_TOTAL_HUNK = 4 // Total amount of hunk memory (SCI01)
};
reg_t kMemoryInfo(EngineState *s, int argc, reg_t *argv) {
// The free heap size returned must not be 0xffff, or some memory
// calculations will overflow. Crazy Nick's games handle up to 32746
// bytes (0x7fea), otherwise they throw a warning that the memory is
// fragmented
const uint16 size = 0x7fea;
switch (argv[0].getOffset()) {
case K_MEMORYINFO_LARGEST_HEAP_BLOCK:
// In order to prevent "Memory fragmented" dialogs from
// popping up in some games, we must return FREE_HEAP - 2 here.
return make_reg(0, size - 2);
case K_MEMORYINFO_FREE_HEAP:
case K_MEMORYINFO_LARGEST_HUNK_BLOCK:
case K_MEMORYINFO_FREE_HUNK:
case K_MEMORYINFO_TOTAL_HUNK:
return make_reg(0, size);
default:
error("Unknown MemoryInfo operation: %04x", argv[0].getOffset());
}
return NULL_REG;
}
enum kMemorySegmentFunc {
K_MEMORYSEGMENT_SAVE_DATA = 0,
K_MEMORYSEGMENT_RESTORE_DATA = 1
};
reg_t kMemorySegment(EngineState *s, int argc, reg_t *argv) {
// MemorySegment provides access to a 256-byte block of memory that remains
// intact across restarts and restores
switch (argv[0].toUint16()) {
case K_MEMORYSEGMENT_SAVE_DATA: {
if (argc < 3)
error("Insufficient number of arguments passed to MemorySegment");
uint16 size = argv[2].toUint16();
if (!size)
size = s->_segMan->strlen(argv[1]) + 1;
if (size > EngineState::kMemorySegmentMax) {
// This was set to cut the block to 256 bytes. This should be an
// error, as we won't restore the full block that the game scripts
// request, thus error out instead.
//size = EngineState::kMemorySegmentMax;
error("kMemorySegment: Requested to save more than 256 bytes (%d)", size);
}
s->_memorySegmentSize = size;
// We assume that this won't be called on pointers
s->_segMan->memcpy(s->_memorySegment, argv[1], size);
break;
}
case K_MEMORYSEGMENT_RESTORE_DATA:
s->_segMan->memcpy(argv[1], s->_memorySegment, s->_memorySegmentSize);
break;
default:
error("Unknown MemorySegment operation %04x", argv[0].toUint16());
}
return argv[1];
}
reg_t kFlushResources(EngineState *s, int argc, reg_t *argv) {
run_gc(s);
debugC(kDebugLevelRoom, "Entering room number %d", argv[0].toUint16());
return s->r_acc;
}
reg_t kSetDebug(EngineState *s, int argc, reg_t *argv) {
// WORKAROUND: For some reason, GK1 calls this unconditionally when
// watching the intro. Older (SCI0) games call it on room change if
// a flag is set, in which case the debugger SHOULD get activated.
// Therefore, don't break into the debugger in GK1, but do so elsewhere.
if (g_sci->getGameId() != GID_GK1) {
debug("Debug mode activated");
g_sci->getDebugger()->attach();
}
return s->r_acc;
}
enum {
KGETTIME_TICKS = 0,
KGETTIME_TIME_12HOUR = 1,
KGETTIME_TIME_24HOUR = 2,
KGETTIME_DATE = 3
};
reg_t kGetTime(EngineState *s, int argc, reg_t *argv) {
TimeDate loc_time;
int retval = 0; // Avoid spurious warning
g_system->getTimeAndDate(loc_time);
int mode = (argc > 0) ? argv[0].toUint16() : 0;
// Modes 2 and 3 are supported since 0.629.
// This condition doesn't check that exactly, but close enough.
if (getSciVersion() == SCI_VERSION_0_EARLY && mode > 1)
error("kGetTime called in SCI0 with mode %d (expected 0 or 1)", mode);
switch (mode) {
case KGETTIME_TICKS :
retval = g_sci->getTickCount();
debugC(kDebugLevelTime, "GetTime(elapsed) returns %d", retval);
break;
case KGETTIME_TIME_12HOUR :
retval = ((loc_time.tm_hour % 12) << 12) | (loc_time.tm_min << 6) | (loc_time.tm_sec);
debugC(kDebugLevelTime, "GetTime(12h) returns %d", retval);
break;
case KGETTIME_TIME_24HOUR :
retval = (loc_time.tm_hour << 11) | (loc_time.tm_min << 5) | (loc_time.tm_sec >> 1);
debugC(kDebugLevelTime, "GetTime(24h) returns %d", retval);
break;
case KGETTIME_DATE :
{
// SCI0 late: Year since 1920 (0 = 1920, 1 = 1921, etc)
// SCI01 and newer: Year since 1980 (0 = 1980, 1 = 1981, etc)
// Atari ST SCI0 late versions use the newer base year.
int baseYear = 80;
if (getSciVersion() == SCI_VERSION_0_LATE && g_sci->getPlatform() == Common::kPlatformDOS) {
baseYear = 20;
}
retval = loc_time.tm_mday | ((loc_time.tm_mon + 1) << 5) | (((loc_time.tm_year - baseYear) & 0x7f) << 9);
debugC(kDebugLevelTime, "GetTime(date) returns %d", retval);
break;
}
default:
error("Attempt to use unknown GetTime mode %d", mode);
break;
}
return make_reg(0, retval);
}
enum {
K_MEMORY_ALLOCATE_CRITICAL = 1,
K_MEMORY_ALLOCATE_NONCRITICAL = 2,
K_MEMORY_FREE = 3,
K_MEMORY_MEMCPY = 4,
K_MEMORY_PEEK = 5,
K_MEMORY_POKE = 6
};
reg_t kMemory(EngineState *s, int argc, reg_t *argv) {
switch (argv[0].toUint16()) {
case K_MEMORY_ALLOCATE_CRITICAL: {
int byteCount = argv[1].toUint16();
// Sierra themselves allocated at least 2 bytes more than requested.
// Probably as a safety margin. And they also made size even.
//
// This behavior is required by at least these:
// - pq3 (multilingual) room 202
// when plotting crimes, allocates the returned bytes from kStrLen
// on "W" and "E" and wants to put a string in there, which doesn't
// fit of course.
// - lsl5 (multilingual) room 280
// allocates memory according to a previous kStrLen for the name of
// the airport ladies (bug #3093818), which isn't enough
byteCount += 2 + (byteCount & 1);
if (!s->_segMan->allocDynmem(byteCount, "kMemory() critical", &s->r_acc)) {
error("Critical heap allocation failed");
}
break;
}
case K_MEMORY_ALLOCATE_NONCRITICAL: {
int byteCount = argv[1].toUint16();
// See above
byteCount += 2 + (byteCount & 1);
s->_segMan->allocDynmem(byteCount, "kMemory() non-critical", &s->r_acc);
break;
}
case K_MEMORY_FREE :
if (!s->_segMan->freeDynmem(argv[1])) {
if (g_sci->getGameId() == GID_QFG1VGA) {
// Ignore script bug in QFG1VGA, when closing any conversation dialog with esc
} else {
// Usually, the result of a script bug. Non-critical
warning("Attempt to kMemory::free() non-dynmem pointer %04x:%04x", PRINT_REG(argv[1]));
}
}
break;
case K_MEMORY_MEMCPY : {
int size = argv[3].toUint16();
s->_segMan->memcpy(argv[1], argv[2], size);
break;
}
case K_MEMORY_PEEK : {
if (!argv[1].getSegment()) {
// This occurs in KQ5CD when interacting with certain objects
warning("Attempt to peek invalid memory at %04x:%04x", PRINT_REG(argv[1]));
return s->r_acc;
}
SegmentRef ref = s->_segMan->dereference(argv[1]);
if (!ref.isValid() || ref.maxSize < 2) {
error("Attempt to peek invalid memory at %04x:%04x", PRINT_REG(argv[1]));
return s->r_acc;
}
if (ref.isRaw)
return make_reg(0, (int16)READ_SCIENDIAN_UINT16(ref.raw));
else {
if (ref.skipByte)
error("Attempt to peek memory at odd offset %04X:%04X", PRINT_REG(argv[1]));
return *(ref.reg);
}
break;
}
case K_MEMORY_POKE : {
SegmentRef ref = s->_segMan->dereference(argv[1]);
if (!ref.isValid() || ref.maxSize < 2) {
error("Attempt to poke invalid memory at %04x:%04x", PRINT_REG(argv[1]));
return s->r_acc;
}
if (ref.isRaw) {
if (argv[2].getSegment()) {
error("Attempt to poke memory reference %04x:%04x to %04x:%04x", PRINT_REG(argv[2]), PRINT_REG(argv[1]));
return s->r_acc;
}
WRITE_SCIENDIAN_UINT16(ref.raw, argv[2].getOffset()); // Amiga versions are BE
} else {
if (ref.skipByte)
error("Attempt to poke memory at odd offset %04X:%04X", PRINT_REG(argv[1]));
*(ref.reg) = argv[2];
}
break;
}
}
return s->r_acc;
}
#ifdef ENABLE_SCI32
reg_t kGetConfig(EngineState *s, int argc, reg_t *argv) {
Common::String setting = s->_segMan->getString(argv[0]);
reg_t data = readSelector(s->_segMan, argv[1], SELECTOR(data));
// This function is used to get the benchmarked results stored in the
// resource.cfg configuration file in Phantasmagoria 1. Normally,
// the configuration file contains values stored by the installer
// regarding audio and video settings, which are then used by the
// executable. In Phantasmagoria, two extra executable files are used
// to perform system benchmarks:
// - CPUID for the CPU benchmarks, sets the cpu and cpuspeed settings
// - HDDTEC for the graphics and CD-ROM benchmarks, sets the videospeed setting
//
// These settings are then used by the game scripts directly to modify
// the game speed and graphics output. The result of this call is stored
// in global 178. The scripts check these values against the value 425.
// Anything below that makes Phantasmagoria awfully sluggish, so we're
// setting everything to 500, which makes the game playable.
setting.toLowercase();
if (setting == "videospeed") {
s->_segMan->strcpy(data, "500");
} else if (setting == "cpu") {
// We always return the fastest CPU setting that CPUID can detect
// (i.e. 586).
s->_segMan->strcpy(data, "586");
} else if (setting == "cpuspeed") {
s->_segMan->strcpy(data, "500");
} else if (setting == "language") {
Common::String languageId = Common::String::format("%d", g_sci->getSciLanguage());
s->_segMan->strcpy(data, languageId.c_str());
} else if (setting == "torindebug") {
// Used to enable the debug mode in Torin's Passage (French).
// If true, the debug mode is enabled.
s->_segMan->strcpy(data, "");
} else if (setting == "leakdump") {
// An unknown setting in LSL7. Likely used for debugging.
s->_segMan->strcpy(data, "");
} else if (setting == "startroom") {
// Debug setting in LSL7, specifies the room to start from.
s->_segMan->strcpy(data, "");
} else if (setting == "game") {
// Hoyle 5 Demo startup.
s->_segMan->strcpy(data, "");
} else {
error("GetConfig: Unknown configuration setting %s", setting.c_str());
}
return argv[1];
}
// Likely modelled after the Windows 3.1 function GetPrivateProfileInt:
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms724345%28v=vs.85%29.aspx
reg_t kGetSierraProfileInt(EngineState *s, int argc, reg_t *argv) {
Common::String category = s->_segMan->getString(argv[0]); // always "config"
category.toLowercase();
Common::String setting = s->_segMan->getString(argv[1]);
setting.toLowercase();
// The third parameter is the default value returned if the configuration key is missing
if (category == "config" && setting == "videospeed") {
// We return the same fake value for videospeed as with kGetConfig
return make_reg(0, 500);
}
warning("kGetSierraProfileInt: Returning default value %d for unknown setting %s.%s", argv[2].toSint16(), category.c_str(), setting.c_str());
return argv[2];
}
reg_t kGetWindowsOption(EngineState *s, int argc, reg_t *argv) {
uint16 windowsOption = argv[0].toUint16();
switch (windowsOption) {
case 0:
// Title bar on/off in Phantasmagoria, we return 0 (off)
return NULL_REG;
default:
warning("GetWindowsOption: Unknown option %d", windowsOption);
return NULL_REG;
}
}
#endif
// kIconBar is really a subop of kMacPlatform for SCI1.1 Mac
reg_t kIconBar(EngineState *s, int argc, reg_t *argv) {
// Mac versions use their own tertiary platform functions
// to handle the outside-of-the-screen icon bar.
// QFG1 Mac calls this function to load the Mac icon bar (of which
// the resources do exist), but the game completely ignores it and
// uses the standard icon bar for the game. We do the same.
if (!g_sci->hasMacIconBar())
return NULL_REG;
switch (argv[0].toUint16()) {
case 0: // InitIconBar
for (int i = 0; i < argv[1].toUint16(); i++)
g_sci->_gfxMacIconBar->addIcon(argv[i + 2]);
break;
case 1: // DisposeIconBar
warning("kIconBar(Dispose)");
break;
case 2: // EnableIconBar (-1 = all)
debug(0, "kIconBar(Enable, %i)", argv[1].toSint16());
g_sci->_gfxMacIconBar->setIconEnabled(argv[1].toSint16(), true);
break;
case 3: // DisableIconBar (-1 = all)
debug(0, "kIconBar(Disable, %i)", argv[1].toSint16());
g_sci->_gfxMacIconBar->setIconEnabled(argv[1].toSint16(), false);
break;
case 4: // SetIconBarIcon
debug(0, "kIconBar(SetIcon, %d, %d)", argv[1].toUint16(), argv[2].toUint16());
if (argv[2].toSint16() == -1)
g_sci->_gfxMacIconBar->setInventoryIcon(argv[2].toSint16());
break;
default:
error("Unknown kIconBar(%d)", argv[0].toUint16());
}
g_sci->_gfxMacIconBar->drawIcons();
return NULL_REG;
}
// kMacPlatform is really a subop of kPlatform for SCI1.1+ Mac
reg_t kMacPlatform(EngineState *s, int argc, reg_t *argv) {
// Mac versions use their own secondary platform functions
// to do various things. Why didn't they just declare a new
// kernel function?
switch (argv[0].toUint16()) {
case 0:
// Subop 0 has changed a few times
// In SCI1, its usage is still unknown
// In SCI1.1, it's NOP
// In SCI32, it's used for remapping cursor ID's
if (getSciVersion() >= SCI_VERSION_2_1_EARLY) // Set Mac cursor remap
g_sci->_gfxCursor->setMacCursorRemapList(argc - 1, argv + 1);
else if (getSciVersion() != SCI_VERSION_1_1)
warning("Unknown SCI1 kMacPlatform(0) call");
break;
case 4: // Handle icon bar code
return kIconBar(s, argc - 1, argv + 1);
case 7: // Unknown, but always return -1
return SIGNAL_REG;
case 1: // Unknown, calls QuickDraw region functions (KQ5, QFG1VGA, Dr. Brain 1)
break; // removed warning, as it produces a lot of spam in the console
case 2: // Unknown, "UseNextWaitEvent" (Various)
case 3: // Unknown, "ProcessOpenDocuments" (Various)
case 5: // Unknown, plays a sound (KQ7)
case 6: // Unknown, menu-related (Unused?)
warning("Unhandled kMacPlatform(%d)", argv[0].toUint16());
break;
default:
error("Unknown kMacPlatform(%d)", argv[0].toUint16());
}
return s->r_acc;
}
enum kSciPlatforms {
kSciPlatformDOS = 1,
kSciPlatformWindows = 2
};
enum kPlatformOps {
kPlatformUnk0 = 0,
kPlatformCDSpeed = 1,
kPlatformUnk2 = 2,
kPlatformCDCheck = 3,
kPlatformGetPlatform = 4,
kPlatformUnk5 = 5,
kPlatformIsHiRes = 6,
kPlatformIsItWindows = 7
};
reg_t kPlatform(EngineState *s, int argc, reg_t *argv) {
bool isWindows = g_sci->getPlatform() == Common::kPlatformWindows;
if (argc == 0 && getSciVersion() < SCI_VERSION_2) {
// This is called in KQ5CD with no parameters, where it seems to do some
// graphics driver check. This kernel function didn't have subfunctions
// then. If 0 is returned, the game functions normally, otherwise all
// the animations show up like a slideshow (e.g. in the intro). So we
// return 0. However, the behavior changed for kPlatform with no
// parameters in SCI32.
return NULL_REG;
}
if (g_sci->forceHiresGraphics()) {
// force Windows platform, so that hires-graphics are enabled
isWindows = true;
}
uint16 operation = (argc == 0) ? 0 : argv[0].toUint16();
switch (operation) {
case kPlatformCDSpeed:
// TODO: Returns CD Speed?
warning("STUB: kPlatform(CDSpeed)");
break;
case kPlatformUnk2:
// Always returns 2
return make_reg(0, 2);
case kPlatformCDCheck:
// TODO: Some sort of CD check?
warning("STUB: kPlatform(CDCheck)");
break;
case kPlatformUnk0:
// For Mac versions, kPlatform(0) with other args has more functionality
if (g_sci->getPlatform() == Common::kPlatformMacintosh && argc > 1)
return kMacPlatform(s, argc - 1, argv + 1);
// Otherwise, fall through
case kPlatformGetPlatform:
return make_reg(0, (isWindows) ? kSciPlatformWindows : kSciPlatformDOS);
case kPlatformUnk5:
// This case needs to return the opposite of case 6 to get hires graphics
return make_reg(0, !isWindows);
case kPlatformIsHiRes:
return make_reg(0, isWindows);
case kPlatformIsItWindows:
return make_reg(0, isWindows);
default:
error("Unsupported kPlatform operation %d", operation);
}
return NULL_REG;
}
reg_t kEmpty(EngineState *s, int argc, reg_t *argv) {
// Placeholder for empty kernel functions which are still called from the
// engine scripts (like the empty kSetSynonyms function in SCI1.1). This
// differs from dummy functions because it does nothing and never throws a
// warning when it is called.
return s->r_acc;
}
reg_t kStub(EngineState *s, int argc, reg_t *argv) {
Kernel *kernel = g_sci->getKernel();
int kernelCallNr = -1;
int kernelSubCallNr = -1;
Common::List<ExecStack>::const_iterator callIterator = s->_executionStack.end();
if (callIterator != s->_executionStack.begin()) {
callIterator--;
ExecStack lastCall = *callIterator;
kernelCallNr = lastCall.debugKernelFunction;
kernelSubCallNr = lastCall.debugKernelSubFunction;
}
Common::String warningMsg;
if (kernelSubCallNr == -1) {
warningMsg = "Dummy function k" + kernel->getKernelName(kernelCallNr) +
Common::String::format("[%x]", kernelCallNr);
} else {
warningMsg = "Dummy function k" + kernel->getKernelName(kernelCallNr, kernelSubCallNr) +
Common::String::format("[%x:%x]", kernelCallNr, kernelSubCallNr);
}
warningMsg += " invoked. Params: " +
Common::String::format("%d", argc) + " (";
for (int i = 0; i < argc; i++) {
warningMsg += Common::String::format("%04x:%04x", PRINT_REG(argv[i]));
warningMsg += (i == argc - 1 ? ")" : ", ");
}
warning("%s", warningMsg.c_str());
return s->r_acc;
}
reg_t kStubNull(EngineState *s, int argc, reg_t *argv) {
kStub(s, argc, argv);
return NULL_REG;
}
reg_t kDummy(EngineState *s, int argc, reg_t *argv) {
kStub(s, argc, argv);
error("Kernel function was called, which was considered to be unused - see log for details");
}
} // End of namespace Sci
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