/* ScummVM - Scumm Interpreter * Copyright (C) 2001 Ludvig Strigeus * Copyright (C) 2001/2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * $Header$ * */ #include "stdafx.h" #include "scumm.h" #include "actor.h" #include "gui/gui.h" #include "gui/newgui.h" #include "resource.h" enum { kScrolltime = 500, // ms scrolling is supposed to take kPictureDelay = 20 }; void Scumm::getGraphicsPerformance() { int i; for (i = 10; i != 0; i--) { initScreens(0, 0, _realWidth, _realHeight); //ender } if (!(_features & GF_SMALL_HEADER)) /* FIXME TEST: Enders Zak fix */ _vars[VAR_PERFORMANCE_1] = 0; //_scummTimer; for (i = 10; i != 0; i--) { setDirtyRange(0, 0, _realHeight); //ender drawDirtyScreenParts(); } if (!(_features & GF_SMALL_HEADER)) /* FIXME TEST: Enders Zak fix */ _vars[VAR_PERFORMANCE_2] = 0; //_scummTimer; if (_gameId == GID_DIG) initScreens(0, 0, _realWidth, _realHeight); else initScreens(0, 16, _realWidth, 144); } void Scumm::initScreens(int a, int b, int w, int h) { int i; for (i = 0; i < 3; i++) { nukeResource(rtBuffer, i + 1); nukeResource(rtBuffer, i + 5); } if (!getResourceAddress(rtBuffer, 4)) { initVirtScreen(3, 0, 80, _realWidth, 13, false, false); } initVirtScreen(0, 0, b, _realWidth, h - b, true, true); initVirtScreen(1, 0, 0, _realWidth, b, false, false); initVirtScreen(2, 0, h, _realWidth, _realHeight - h, false, false); //ender _screenB = b; _screenH = h; } void Scumm::initVirtScreen(int slot, int number, int top, int width, int height, bool twobufs, bool fourextra) { VirtScreen *vs = &virtscr[slot]; int size; int i; byte *ptr; assert(height >= 0); assert(slot >= 0 && slot < 4); vs->number = slot; vs->unk1 = 0; vs->width = _realWidth; vs->topline = top; vs->height = height; vs->alloctwobuffers = twobufs; vs->scrollable = fourextra; vs->xstart = 0; size = vs->width * vs->height; vs->size = size; vs->backBuf = NULL; if (vs->scrollable) size += _realWidth * 4; createResource(rtBuffer, slot + 1, size); vs->screenPtr = getResourceAddress(rtBuffer, slot + 1); ptr = vs->screenPtr; for (i = 0; i < size; i++) // reset background ? *ptr++ = 0; if (twobufs) { createResource(rtBuffer, slot + 5, size); } if (slot != 3) { setDirtyRange(slot, 0, height); } } void Scumm::setDirtyRange(int slot, int top, int bottom) { int i; VirtScreen *vs = &virtscr[slot]; for (i = 0; i < NUM_STRIPS; i++) { vs->tdirty[i] = top; vs->bdirty[i] = bottom; } } /* power of 2 */ #define NUM_SHAKE_POSITIONS 8 static const int8 shake_positions[NUM_SHAKE_POSITIONS] = { 0, 1 * 2, 2 * 2, 1 * 2, 0 * 2, 2 * 2, 3 * 2, 1 * 2 }; void Scumm::drawDirtyScreenParts() { int i; VirtScreen *vs; byte *src; updateDirtyScreen(2); if (_features & GF_OLD256) updateDirtyScreen(1); if ((camera._last.x == camera._cur.x && camera._last.y == camera._cur.y && (_features & GF_AFTER_V7)) || (camera._last.x == camera._cur.x)) { updateDirtyScreen(0); } else { vs = &virtscr[0]; src = vs->screenPtr + _screenStartStrip * 8 + camera._cur.y - (_realHeight / 2); _system->copy_rect(src, _realWidth, 0, vs->topline, _realWidth, vs->height); for (i = 0; i < NUM_STRIPS; i++) { vs->tdirty[i] = (byte)vs->height; vs->bdirty[i] = 0; } } /* Handle shaking */ if (_shakeEnabled && !_gui->isActive() && !_newgui->isActive()) { _shakeFrame = (_shakeFrame + 1) & (NUM_SHAKE_POSITIONS - 1); _system->set_shake_pos(shake_positions[_shakeFrame]); } else if (!_shakeEnabled &&_shakeFrame != 0) { _shakeFrame = 0; _system->set_shake_pos(shake_positions[_shakeFrame]); } } void Scumm::updateDirtyScreen(int slot) { gdi.updateDirtyScreen(&virtscr[slot]); } void Gdi::updateDirtyScreen(VirtScreen *vs) { int i; int start, w, top, bottom; if (vs->height == 0) return; _readOffs = 0; if (vs->scrollable) _readOffs = vs->xstart; w = 8; start = 0; for (i = 0; i < NUM_STRIPS; i++) { bottom = vs->bdirty[i]; if (_vm->_features & GF_AFTER_V7 && (_vm->camera._cur.y != _vm->camera._last.y)) drawStripToScreen(vs, start, w, 0, vs->height); else if (bottom) { top = vs->tdirty[i]; vs->tdirty[i] = (byte)vs->height; vs->bdirty[i] = 0; if (i != (NUM_STRIPS-1) && vs->bdirty[i + 1] == (byte)bottom && vs->tdirty[i + 1] == (byte)top) { w += 8; continue; } if (_vm->_features & GF_AFTER_V7) drawStripToScreen(vs, start, w, 0, vs->height); else drawStripToScreen(vs, start, w, top, bottom); w = 8; } start = i + 1; } } void Gdi::drawStripToScreen(VirtScreen *vs, int x, int w, int t, int b) { byte *ptr; int scrollY; int height; if (b <= t) return; if (t > vs->height) t = 0; if (b > vs->height) b = vs->height; height = b - t; if (height > _vm->_realHeight) height = _vm->_realHeight; scrollY = _vm->camera._cur.y - (_vm->_realHeight / 2); if (scrollY == -(_vm->_realHeight / 2)) scrollY = 0; ptr = vs->screenPtr + (t * NUM_STRIPS + x) * 8 + _readOffs + scrollY * _vm->_realWidth; _vm->_system->copy_rect(ptr, _vm->_realWidth, x * 8, vs->topline + t, w, height); } void Scumm::blit(byte *dst, byte *src, int w, int h) { assert(h > 0); assert(src != NULL); assert(dst != NULL); do { memcpy(dst, src, w); dst += _realWidth; src += _realWidth; } while (--h); } void Scumm::setCursor(int cursor) { warning("setCursor(%d)", cursor); } void Scumm::setCameraAt(int pos_x, int pos_y) { if (_features & GF_AFTER_V7) { ScummPoint old; old = camera._cur; camera._cur.x = pos_x; camera._cur.y = pos_y; clampCameraPos(&camera._cur); camera._dest = camera._cur; assert(camera._cur.x >= (_realWidth / 2) && camera._cur.y >= (_realHeight / 2)); if ((camera._cur.x != old.x || camera._cur.y != old.y) && _vars[VAR_SCROLL_SCRIPT]) { _vars[VAR_CAMERA_POS_X] = camera._cur.x; _vars[VAR_CAMERA_POS_Y] = camera._cur.y; runScript(_vars[VAR_SCROLL_SCRIPT], 0, 0, 0); } } else { int t; if (camera._mode != CM_FOLLOW_ACTOR || abs(pos_x - camera._cur.x) > (_realWidth / 2)) { camera._cur.x = pos_x; } camera._dest.x = pos_x; t = _vars[VAR_CAMERA_MIN_X]; if (camera._cur.x < t) camera._cur.x = t; t = _vars[VAR_CAMERA_MAX_X]; if (camera._cur.x > t) camera._cur.x = t; if (_vars[VAR_SCROLL_SCRIPT]) { _vars[VAR_CAMERA_POS_X] = camera._cur.x; runScript(_vars[VAR_SCROLL_SCRIPT], 0, 0, 0); } if (camera._cur.x != camera._last.x && charset._hasMask) stopTalk(); } } void Scumm::setCameraFollows(Actor *a) { if (_features & GF_AFTER_V7) { byte oldfollow = camera._follows; int ax, ay; camera._follows = a->number; if (!a->isInCurrentRoom()) { startScene(a->getRoom(), 0, 0); } ax = abs(a->x - camera._cur.x); ay = abs(a->y - camera._cur.y); if (ax > _vars[VAR_CAMERA_THRESHOLD_X] || ay > _vars[VAR_CAMERA_THRESHOLD_Y] || ax > (_realWidth / 2) || ay > (_realHeight / 2)) { setCameraAt(a->x, a->y); } if (a->number != oldfollow) runHook(0); } else { int t, i; camera._mode = CM_FOLLOW_ACTOR; camera._follows = a->number; if (!a->isInCurrentRoom()) { startScene(a->getRoom(), 0, 0); camera._mode = CM_FOLLOW_ACTOR; camera._cur.x = a->x; setCameraAt(camera._cur.x, 0); } t = (a->x >> 3); if (t - _screenStartStrip < camera._leftTrigger || t - _screenStartStrip > camera._rightTrigger) setCameraAt(a->x, 0); for (i = 1, a = getFirstActor(); ++a, i < NUM_ACTORS; i++) { if (a->isInCurrentRoom()) a->needRedraw = true; } runHook(0); } } void Scumm::initBGBuffers(int height) { byte *ptr; int size, itemsize, i; byte *room; if (_features & GF_AFTER_V7) { initVirtScreen(0, 0, virtscr[0].topline, _realHeight, height, 1, 1); } room = getResourceAddress(rtRoom, _roomResource); if (_features & GF_OLD256) { // FIXME - maybe this should check for multiple planes like we do // for GF_SMALL_HEADER already. gdi._numZBuffer = 2; } else if (_features & GF_SMALL_HEADER) { //#define DEBUG_ZPLANE_CODE ptr = findResourceData(MKID('SMAP'), room); #ifdef DEBUG_ZPLANE_CODE printf("Trying to determine room zplanes:\n"); hexdump(ptr-6, 0x20); #endif int off; gdi._numZBuffer = 0; off = READ_LE_UINT32(ptr); for (i = 0; off && (i < 4); i++) { #ifdef DEBUG_ZPLANE_CODE printf("Plane %d\n", i); hexdump(ptr, 0x20); #endif gdi._numZBuffer++; ptr += off; off = READ_LE_UINT16(ptr); } #ifdef DEBUG_ZPLANE_CODE printf("Real plane count = %d\n", gdi._numZBuffer); #endif } else { ptr = findResource(MKID('RMIH'), findResource(MKID('RMIM'), room)); gdi._numZBuffer = READ_LE_UINT16(ptr + 8) + 1; } assert(gdi._numZBuffer >= 1 && gdi._numZBuffer <= 5); if (_features & GF_AFTER_V7) itemsize = (virtscr[0].height + 4) * NUM_STRIPS; else itemsize = (_scrHeight + 4) * NUM_STRIPS; size = itemsize * gdi._numZBuffer; createResource(rtBuffer, 9, size); for (i = 0; i < 4; i++) gdi._imgBufOffs[i] = i * itemsize; } void Scumm::setPaletteFromPtr(byte *ptr) { int i, r, g, b; byte *dest; int numcolor; if (_features & GF_SMALL_HEADER) { if (_features & GF_OLD256) numcolor = 256; else numcolor = READ_LE_UINT16(ptr + 6) / 3; ptr += 8; } else { numcolor = getResourceDataSize(ptr) / 3; } checkRange(256, 0, numcolor, "Too many colors (%d) in Palette"); dest = _currentPalette; for (i = 0; i < numcolor; i++) { r = *ptr++; g = *ptr++; b = *ptr++; if (i <= 15 || r < 252 || g < 252 || b < 252) { *dest++ = r; *dest++ = g; *dest++ = b; } else { dest += 3; } } setDirtyColors(0, numcolor - 1); } void Scumm::setPaletteFromRes() { byte *ptr; ptr = getResourceAddress(rtRoom, _roomResource) + _CLUT_offs; setPaletteFromPtr(ptr); } void Scumm::setDirtyColors(int min, int max) { if (_palDirtyMin > min) _palDirtyMin = min; if (_palDirtyMax < max) _palDirtyMax = max; } void Scumm::initCycl(byte *ptr) { int j; ColorCycle *cycl; memset(_colorCycle, 0, sizeof(_colorCycle)); while ((j = *ptr++) != 0) { if (j < 1 || j > 16) { error("Invalid color cycle index %d", j); } cycl = &_colorCycle[j - 1]; ptr += 2; cycl->counter = 0; cycl->delay = 16384 / READ_BE_UINT16_UNALIGNED(ptr); ptr += 2; cycl->flags = READ_BE_UINT16_UNALIGNED(ptr); ptr += 2; cycl->start = *ptr++; cycl->end = *ptr++; } } void Scumm::stopCycle(int i) { ColorCycle *cycl; checkRange(16, 0, i, "Stop Cycle %d Out Of Range"); if (i != 0) { _colorCycle[i - 1].delay = 0; return; } for (i = 0, cycl = _colorCycle; i < 16; i++, cycl++) cycl->delay = 0; } void Scumm::cyclePalette() { ColorCycle *cycl; int valueToAdd; int i, num; byte *start, *end; byte tmp[3]; valueToAdd = _vars[VAR_TIMER]; if (valueToAdd < _vars[VAR_TIMER_NEXT]) valueToAdd = _vars[VAR_TIMER_NEXT]; if (!_colorCycle) // FIXME return; for (i = 0, cycl = _colorCycle; i < 16; i++, cycl++) { if (cycl->delay && (cycl->counter += valueToAdd) >= cycl->delay) { do { cycl->counter -= cycl->delay; } while (cycl->delay <= cycl->counter); setDirtyColors(cycl->start, cycl->end); moveMemInPalRes(cycl->start, cycl->end, cycl->flags & 2); start = &_currentPalette[cycl->start * 3]; end = &_currentPalette[cycl->end * 3]; num = cycl->end - cycl->start; if (!(cycl->flags & 2)) { memmove(tmp, end, 3); memmove(start + 3, start, num * 3); memmove(start, tmp, 3); } else { memmove(tmp, start, 3); memmove(start, start + 3, num * 3); memmove(end, tmp, 3); } } } } // Perform color cycling on the palManipulate data, too, otherwise // color cycling will be disturbed by the palette fade. void Scumm::moveMemInPalRes(int start, int end, byte direction) { byte *startptr, *endptr; byte *startptr2, *endptr2; int num; byte tmp[6]; byte tmp2[6]; if (!_palManipCounter) return; startptr = getResourceAddress(rtTemp, 4) + start * 6; endptr = getResourceAddress(rtTemp, 4) + end * 6; startptr2 = getResourceAddress(rtTemp, 5) + start * 6; endptr2 = getResourceAddress(rtTemp, 5) + end * 6; num = end - start; if (!endptr) { warning("moveMemInPalRes(%d,%d): Bad end pointer\n", start, end); return; } if (!direction) { memmove(tmp, endptr, 6); memmove(startptr + 6, startptr, num * 6); memmove(startptr, tmp, 6); memmove(tmp2, endptr2, 6); memmove(startptr2 + 6, startptr2, num * 6); memmove(startptr2, tmp2, 6); } else { memmove(tmp, startptr, 6); memmove(startptr, startptr + 6, num * 6); memmove(endptr, tmp, 6); memmove(tmp2, startptr2, 6); memmove(startptr2, startptr2 + 6, num * 6); memmove(endptr2, tmp2, 6); } } void Scumm::drawFlashlight() { static byte *flashBuffer = NULL; static int flashX, flashY, flashW, flashH; int i, j, offset; int topline = virtscr[0].topline; // Remove the flash light first if it was previously drawn if (_flashlightIsDrawn) { updateDirtyRect(0, flashX<<3, (flashX+flashW)<<3, flashY, flashY+flashH, 0x80000000); if (flashBuffer) { offset = _realWidth - flashW*8; i = flashH; do { j = flashW*2; do { *(uint32 *)flashBuffer = 0; flashBuffer += 4; } while (--j); flashBuffer += offset; } while (--i); } _flashlightIsDrawn = false; } if (_flashlightXStrips == 0 || _flashlightYStrips == 0) return; // Calculate the area of the flashlight Actor *a = a = derefActorSafe(_vars[VAR_EGO], "drawFlashlight"); flashW = _flashlightXStrips; flashH = _flashlightYStrips * 8; flashX = a->x/8 - flashW/2 - _screenStartStrip; flashY = a->y - flashH/2; // Clip the flashlight at the borders if (flashX < 0) flashX = 0; else if (flashX > NUM_STRIPS - flashW) flashX = NUM_STRIPS - flashW; if (flashY < 0) flashY = 0; else if (flashY > virtscr[0].height - flashH) flashY = virtscr[0].height - flashH; // Redraw any actors "under" the flashlight for (i = flashX; i < flashX+flashW; i++) { gfxUsageBits[_screenStartStrip + i] |= 0x80000000; virtscr[0].tdirty[i] = 0; virtscr[0].bdirty[i] = virtscr[0].height; } byte *bgbak; offset = (flashY - topline) * _realWidth + virtscr[0].xstart + flashX * 8; flashBuffer = virtscr[0].screenPtr + offset; bgbak = getResourceAddress(rtBuffer, 5) + offset; blit(flashBuffer, bgbak, flashW*8, flashH); // Round the corners. To do so, we simply hard-code a set of nicely // rounded corners. int corner_data[] = { 8, 6, 4, 3, 2, 2, 1, 1 }; int minrow = 0; int maxcol = flashW * 8 - 1; int maxrow = (flashH - 1) * _realWidth; for (i = 0; i < 8; i++, minrow += _realWidth, maxrow -= _realWidth) { int d = corner_data[i]; for (j = 0; j < d; j++) { flashBuffer[minrow + j] = 0; flashBuffer[minrow + maxcol - j] = 0; flashBuffer[maxrow + j] = 0; flashBuffer[maxrow + maxcol - j] = 0; } } _flashlightIsDrawn = true; } void Scumm::fadeIn(int effect) { switch (effect) { case 1: case 2: case 3: case 4: transitionEffect(effect - 1); break; case 128: unkScreenEffect6(); break; case 130: case 131: case 132: case 133: scrollEffect(133 - effect); break; case 134: dissolveEffect(1, 1); break; case 135: unkScreenEffect5(1); break; case 129: break; default: warning("Unknown screen effect, %d", effect); } _screenEffectFlag = true; } void Scumm::fadeOut(int a) { VirtScreen *vs; setDirtyRange(0, 0, 0); if (!(_features & GF_AFTER_V7)) camera._last.x = camera._cur.x; if (!_screenEffectFlag) return; _screenEffectFlag = false; if (a == 0) return; // Fill screen 0 with black vs = &virtscr[0]; gdi._backbuff_ptr = vs->screenPtr + vs->xstart; memset(gdi._backbuff_ptr, 0, vs->size); // Fade to black with the specified effect, if any. switch (a) { case 1: case 2: case 3: case 4: transitionEffect(a - 1); break; case 128: unkScreenEffect6(); break; case 129: // Just blit screen 0 to the display (i.e. display will be black) setDirtyRange(0, 0, vs->height); updateDirtyScreen(0); break; case 134: dissolveEffect(1, 1); break; case 135: unkScreenEffect5(1); break; default: warning("fadeOut: default case %d", a); } } void Scumm::redrawBGAreas() { int i; int val; int diff; if (!(_features & GF_AFTER_V7)) if (camera._cur.x != camera._last.x && charset._hasMask) stopTalk(); val = 0; if (!_fullRedraw && _BgNeedsRedraw) { for (i = 0; i != NUM_STRIPS; i++) { if (gfxUsageBits[_screenStartStrip + i] & 0x80000000) { redrawBGStrip(i, 1); } } } if (_features & GF_AFTER_V7) { diff = (camera._cur.x >> 3) - (camera._last.x >> 3); if (_fullRedraw == 0 && diff == 1) { val = 2; redrawBGStrip(NUM_STRIPS-1, 1); } else if (_fullRedraw == 0 && diff == -1) { val = 1; redrawBGStrip(0, 1); } else if (_fullRedraw != 0 || diff != 0) { _BgNeedsRedraw = false; _fullRedraw = false; redrawBGStrip(0, NUM_STRIPS); } } else { if (_fullRedraw == 0 && camera._cur.x - camera._last.x == 8) { val = 2; redrawBGStrip(NUM_STRIPS-1, 1); } else if (_fullRedraw == 0 && camera._cur.x - camera._last.x == -8) { val = 1; redrawBGStrip(0, 1); } else if (_fullRedraw != 0 || camera._cur.x != camera._last.x) { _BgNeedsRedraw = false; _flashlightIsDrawn = false; redrawBGStrip(0, NUM_STRIPS); } } drawRoomObjects(val); _BgNeedsRedraw = false; } const uint32 zplane_tags[] = { MKID('ZP00'), MKID('ZP01'), MKID('ZP02'), MKID('ZP03'), MKID('ZP04') }; void Gdi::drawBitmap(byte *ptr, VirtScreen *vs, int x, int y, int h, int stripnr, int numstrip, byte flag) { byte *smap_ptr, *where_draw_ptr; int i; byte *zplane_list[6]; int bottom; byte twobufs; int numzbuf; int sx; bool lightsOn; // Check whether lights are turned on or not lightsOn = (_vm->_features & GF_AFTER_V6) || (vs->number != 0) || (_vm->_vars[_vm->VAR_CURRENT_LIGHTS] & LIGHTMODE_screen); CHECK_HEAP; if (_vm->_features & GF_SMALL_HEADER) smap_ptr = _smap_ptr = ptr; else smap_ptr = findResource(MKID('SMAP'), ptr); assert(smap_ptr); numzbuf = _disable_zbuffer ? 0 : _numZBuffer; if (_vm->_features & GF_SMALL_HEADER) { /* this is really ugly, FIXME */ if (ptr[-2] == 'B' && ptr[-1] == 'M' && READ_LE_UINT32(ptr - 6) > (READ_LE_UINT32(ptr) + 10)) { zplane_list[1] = smap_ptr + READ_LE_UINT32(ptr); // FIXME - how does GF_OLD256 encode the multiple zplanes? if (!(_vm->_features & GF_OLD256)) for (i = 2; i < numzbuf; i++) { zplane_list[i] = zplane_list[i-1] + READ_LE_UINT16(zplane_list[i-1]); } } else if (ptr[-4] == 'O' && ptr[-3] == 'I' && READ_LE_UINT32(ptr - 8) > READ_LE_UINT32(ptr) + 12) { zplane_list[1] = smap_ptr + READ_LE_UINT32(ptr); // FIXME - how does GF_OLD256 encode the multiple zplanes? if (!(_vm->_features & GF_OLD256)) for (i = 2; i < numzbuf; i++) { zplane_list[i] = zplane_list[i-1] + READ_LE_UINT16(zplane_list[i-1]); } } else { zplane_list[1] = 0; } } else { for (i = 1; i < numzbuf; i++) { zplane_list[i] = findResource(zplane_tags[i], ptr); } } bottom = y + h; if (bottom > vs->height) { warning("Gdi::drawBitmap, strip drawn to %d below window bottom %d", bottom, vs->height); } twobufs = vs->alloctwobuffers; _vertStripNextInc = h * _vm->_realWidth - 1; _numLinesToProcess = h; do { if (_vm->_features & GF_SMALL_HEADER) _smap_ptr = smap_ptr + READ_LE_UINT32(smap_ptr + stripnr * 4 + 4); else _smap_ptr = smap_ptr + READ_LE_UINT32(smap_ptr + stripnr * 4 + 8); CHECK_HEAP; sx = x; if (vs->scrollable) sx -= vs->xstart >> 3; if ((uint) sx >= NUM_STRIPS) return; if (y < vs->tdirty[sx]) vs->tdirty[sx] = y; if (bottom > vs->bdirty[sx]) vs->bdirty[sx] = bottom; _backbuff_ptr = vs->screenPtr + (y * NUM_STRIPS + x) * 8; if (twobufs) _bgbak_ptr = _vm->getResourceAddress(rtBuffer, vs->number + 5) + (y * NUM_STRIPS + x) * 8; else _bgbak_ptr = _backbuff_ptr; _mask_ptr = _vm->getResourceAddress(rtBuffer, 9) + (y * NUM_STRIPS + x); where_draw_ptr = _bgbak_ptr; decompressBitmap(); CHECK_HEAP; if (twobufs) { _bgbak_ptr = where_draw_ptr; if (_vm->hasCharsetMask(sx << 3, y, (sx + 1) << 3, bottom)) { if (flag & dbClear || !lightsOn) clear8ColWithMasking(); else draw8ColWithMasking(); } else { if (flag & dbClear || !lightsOn) clear8Col(); else _vm->blit(_backbuff_ptr, _bgbak_ptr, 8, h); } } CHECK_HEAP; if (flag & dbDrawMaskOnBoth) { _z_plane_ptr = zplane_list[1] + READ_LE_UINT16(zplane_list[1] + stripnr * 2 + 8); _mask_ptr_dest = _vm->getResourceAddress(rtBuffer, 9) + y * NUM_STRIPS + x; if (_useOrDecompress && flag & dbAllowMaskOr) decompressMaskImgOr(); else decompressMaskImg(); } for (i = 1; i < numzbuf; i++) { uint16 offs; if (!zplane_list[i]) continue; if (_vm->_features & GF_SMALL_HEADER) if (_vm->_features & GF_OLD256) offs = READ_LE_UINT16(zplane_list[i] + stripnr * 2 + 4); else offs = READ_LE_UINT16(zplane_list[i] + stripnr * 2 + 2); else offs = READ_LE_UINT16(zplane_list[i] + stripnr * 2 + 8); _mask_ptr_dest = _vm->getResourceAddress(rtBuffer, 9) + y * NUM_STRIPS + x + _imgBufOffs[i]; if (offs) { _z_plane_ptr = zplane_list[i] + offs; if (_useOrDecompress && flag & dbAllowMaskOr) decompressMaskImgOr(); else decompressMaskImg(); } else { if (_useOrDecompress && flag & dbAllowMaskOr); /* nothing */ else for (int h = 0; h < _numLinesToProcess; h++) _mask_ptr_dest[h * NUM_STRIPS] = 0; /* needs better abstraction, FIXME */ } } CHECK_HEAP; x++; stripnr++; } while (--numstrip); } void Gdi::decompressBitmap() { const byte decompress_table[] = { 0x0, 0x1, 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF, 0x0, }; _useOrDecompress = false; byte code = *_smap_ptr++; assert(_numLinesToProcess); if (_vm->_features & GF_AMIGA) _palette_mod = 16; else _palette_mod = 0; switch (code) { case 1: unkDecode7(); break; case 2: unkDecode8(); /* Ender - Zak256/Indy256 */ break; case 3: unkDecode9(); /* Ender - Zak256/Indy256 */ break; case 4: unkDecode10(); /* Ender - Zak256/Indy256 */ break; case 7: unkDecode11(); /* Ender - Zak256/Indy256 */ break; case 14: case 15: case 16: case 17: case 18: _decomp_shr = code - 10; _decomp_mask = decompress_table[code - 10]; unkDecode6(); break; case 24: case 25: case 26: case 27: case 28: _decomp_shr = code - 20; _decomp_mask = decompress_table[code - 20]; unkDecode5(); break; case 34: case 35: case 36: case 37: case 38: _useOrDecompress = true; _decomp_shr = code - 30; _decomp_mask = decompress_table[code - 30]; unkDecode4(); break; case 44: case 45: case 46: case 47: case 48: _useOrDecompress = true; _decomp_shr = code - 40; _decomp_mask = decompress_table[code - 40]; unkDecode2(); break; case 64: case 65: case 66: case 67: case 68: _decomp_shr = code - 60; _decomp_mask = decompress_table[code - 60]; unkDecode1(); break; case 84: case 85: case 86: case 87: case 88: _useOrDecompress = true; _decomp_shr = code - 80; _decomp_mask = decompress_table[code - 80]; unkDecode3(); break; /* New since version 6 */ case 104: case 105: case 106: case 107: case 108: _decomp_shr = code - 100; _decomp_mask = decompress_table[code - 100]; unkDecode1(); break; /* New since version 6 */ case 124: case 125: case 126: case 127: case 128: _useOrDecompress = true; _decomp_shr = code - 120; _decomp_mask = decompress_table[code - 120]; unkDecode3(); break; default: error("Gdi::decompressBitmap: default case %d", code); } } int Scumm::hasCharsetMask(int x, int y, int x2, int y2) { if (!charset._hasMask || y > gdi._mask_bottom || x > gdi._mask_right || y2 < gdi._mask_top || x2 < gdi._mask_left) return 0; return 1; } void Gdi::draw8ColWithMasking() { int height = _numLinesToProcess; byte *mask = _mask_ptr; byte *dst = _backbuff_ptr; byte *src = _bgbak_ptr; byte maskbits; do { maskbits = *mask; if (maskbits) { if (!(maskbits & 0x80)) dst[0] = src[0]; if (!(maskbits & 0x40)) dst[1] = src[1]; if (!(maskbits & 0x20)) dst[2] = src[2]; if (!(maskbits & 0x10)) dst[3] = src[3]; if (!(maskbits & 0x08)) dst[4] = src[4]; if (!(maskbits & 0x04)) dst[5] = src[5]; if (!(maskbits & 0x02)) dst[6] = src[6]; if (!(maskbits & 0x01)) dst[7] = src[7]; } else { ((uint32 *)dst)[0] = ((uint32 *)src)[0]; ((uint32 *)dst)[1] = ((uint32 *)src)[1]; } src += _vm->_realWidth; dst += _vm->_realWidth; mask += NUM_STRIPS; } while (--height); } void Gdi::clear8ColWithMasking() { int height = _numLinesToProcess; byte *mask = _mask_ptr; byte *dst = _backbuff_ptr; byte maskbits; do { maskbits = *mask; if (maskbits) { if (!(maskbits & 0x80)) dst[0] = 0; if (!(maskbits & 0x40)) dst[1] = 0; if (!(maskbits & 0x20)) dst[2] = 0; if (!(maskbits & 0x10)) dst[3] = 0; if (!(maskbits & 0x08)) dst[4] = 0; if (!(maskbits & 0x04)) dst[5] = 0; if (!(maskbits & 0x02)) dst[6] = 0; if (!(maskbits & 0x01)) dst[7] = 0; } else { ((uint32 *)dst)[0] = 0; ((uint32 *)dst)[1] = 0; } dst += _vm->_realWidth; mask += NUM_STRIPS; } while (--height); } void Gdi::clear8Col() { int height = _numLinesToProcess; byte *dst = _backbuff_ptr; do { ((uint32 *)dst)[0] = 0; ((uint32 *)dst)[1] = 0; dst += _vm->_realWidth; } while (--height); } void Gdi::decompressMaskImg() { byte *src = _z_plane_ptr; byte *dst = _mask_ptr_dest; int height = _numLinesToProcess; byte b, c; while (1) { b = *src++; if (b & 0x80) { b &= 0x7F; c = *src++; do { *dst = c; dst += NUM_STRIPS; if (!--height) return; } while (--b); } else { do { *dst = *src++; dst += NUM_STRIPS; if (!--height) return; } while (--b); } } } void Gdi::decompressMaskImgOr() { byte *src = _z_plane_ptr; byte *dst = _mask_ptr_dest; int height = _numLinesToProcess; byte b, c; while (1) { b = *src++; if (b & 0x80) { b &= 0x7F; c = *src++; do { *dst |= c; dst += NUM_STRIPS; if (!--height) return; } while (--b); } else { do { *dst |= *src++; dst += NUM_STRIPS; if (!--height) return; } while (--b); } } } void Scumm::redrawBGStrip(int start, int num) { int s = _screenStartStrip + start; assert(s >= 0 && (size_t) s < sizeof(gfxUsageBits) / sizeof(gfxUsageBits[0])); _curVirtScreen = &virtscr[0]; for (int i = 0; i < num; i++) gfxUsageBits[s + i] |= 0x80000000; /*if (_curVirtScreen->height < _scrHeight) { warning("Screen Y size %d < Room height %d", _curVirtScreen->height, _scrHeight); } */ gdi.drawBitmap(getResourceAddress(rtRoom, _roomResource) + _IM00_offs, _curVirtScreen, s, 0, _curVirtScreen->height, s, num, 0); } #define READ_BIT (cl--,bit = bits&1, bits>>=1,bit) #define FILL_BITS if (cl <= 8) { bits |= (*src++ << cl); cl += 8;} void Gdi::unkDecode1() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; byte color = *src++; uint bits = *src++; byte cl = 8; byte bit; byte incm, reps; _tempNumLines = _numLinesToProcess; do { _currentX = 8; do { FILL_BITS *dst++ = color + _palette_mod;; againPos:; if (!READ_BIT) { } else if (READ_BIT) { incm = (bits & 7) - 4; cl -= 3; bits >>= 3; if (!incm) { FILL_BITS reps = bits & 0xFF; do { if (!--_currentX) { _currentX = 8; dst += 312; if (!--_tempNumLines) return; } *dst++ = color + _palette_mod; } while (--reps); bits >>= 8; bits |= (*src++) << (cl - 8); goto againPos; } else { color += incm; } } else { FILL_BITS color = bits & _decomp_mask; cl -= _decomp_shr; bits >>= _decomp_shr; } } while (--_currentX); dst += 312; } while (--_tempNumLines); } void Gdi::unkDecode2() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; byte color = *src++; int8 inc = -1; uint bits = *src++; byte cl = 8; byte bit; _tempNumLines = _numLinesToProcess; do { _currentX = 8; do { FILL_BITS if (color != _transparency) *dst = color + _palette_mod; dst++; if (!READ_BIT) { } else if (!READ_BIT) { FILL_BITS color = bits & _decomp_mask; bits >>= _decomp_shr; cl -= _decomp_shr; inc = -1; } else if (!READ_BIT) { color += inc; } else { inc = -inc; color += inc; } } while (--_currentX); dst += 312; } while (--_tempNumLines); } void Gdi::unkDecode3() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; byte color = *src++; uint bits = *src++; byte cl = 8; byte bit; byte incm, reps; _tempNumLines = _numLinesToProcess; do { _currentX = 8; do { FILL_BITS if (color != _transparency) *dst = color + _palette_mod; dst++; againPos:; if (!READ_BIT) { } else if (READ_BIT) { incm = (bits & 7) - 4; cl -= 3; bits >>= 3; if (incm) { color += incm; } else { FILL_BITS reps = bits & 0xFF; if (color == _transparency) { do { if (!--_currentX) { _currentX = 8; dst += 312; if (!--_tempNumLines) return; } dst++; } while (--reps); } else { do { if (!--_currentX) { _currentX = 8; dst += 312; if (!--_tempNumLines) return; } *dst++ = color + _palette_mod; } while (--reps); } bits >>= 8; bits |= (*src++) << (cl - 8); goto againPos; } } else { FILL_BITS color = bits & _decomp_mask; cl -= _decomp_shr; bits >>= _decomp_shr; } } while (--_currentX); dst += 312; } while (--_tempNumLines); } void Gdi::unkDecode4() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; byte color = *src++; int8 inc = -1; uint bits = *src++; byte cl = 8; byte bit; _currentX = 8; do { _tempNumLines = _numLinesToProcess; do { FILL_BITS if (color != _transparency) *dst = color + _palette_mod; dst += _vm->_realWidth; if (!READ_BIT) { } else if (!READ_BIT) { FILL_BITS color = bits & _decomp_mask; bits >>= _decomp_shr; cl -= _decomp_shr; inc = -1; } else if (!READ_BIT) { color += inc; } else { inc = -inc; color += inc; } } while (--_tempNumLines); dst -= _vertStripNextInc; } while (--_currentX); } void Gdi::unkDecode5() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; byte color = *src++; int8 inc = -1; uint bits = *src++; byte cl = 8; byte bit; _tempNumLines = _numLinesToProcess; do { _currentX = 8; do { FILL_BITS *dst++ = color + _palette_mod; if (!READ_BIT) { } else if (!READ_BIT) { FILL_BITS color = bits & _decomp_mask; bits >>= _decomp_shr; cl -= _decomp_shr; inc = -1; } else if (!READ_BIT) { color += inc; } else { inc = -inc; color += inc; } } while (--_currentX); dst += 312; } while (--_tempNumLines); } void Gdi::unkDecode6() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; byte color = *src++; int8 inc = -1; uint bits = *src++; byte cl = 8; byte bit; _currentX = 8; do { _tempNumLines = _numLinesToProcess; do { FILL_BITS *dst = color + _palette_mod; dst += _vm->_realWidth; if (!READ_BIT) { } else if (!READ_BIT) { FILL_BITS color = bits & _decomp_mask; bits >>= _decomp_shr; cl -= _decomp_shr; inc = -1; } else if (!READ_BIT) { color += inc; } else { inc = -inc; color += inc; } } while (--_tempNumLines); dst -= _vertStripNextInc; } while (--_currentX); } /* Ender - Zak256/Indy256 decoders */ #define READ_256BIT \ if ((mask <<= 1) == 256) {buffer = *src++; mask = 1;} \ bits = ((buffer & mask) != 0); #define NEXT_ROW \ dst += _vm->_realWidth; \ if (--h == 0) { \ if (!--_currentX) \ return; \ dst -= _vertStripNextInc; \ h = _numLinesToProcess; \ } void Gdi::unkDecode7() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; int height = _numLinesToProcess; uint h = _numLinesToProcess; if (_vm->_features & GF_OLD256) { _currentX = 8; for (;;) { byte color = *src++; *dst = color; NEXT_ROW} return; } do { /* Endian safe */ #if defined(SCUMM_NEED_ALIGNMENT) memcpy(dst, src, 8); #else ((uint32 *)dst)[0] = ((uint32 *)src)[0]; ((uint32 *)dst)[1] = ((uint32 *)src)[1]; #endif dst += _vm->_realWidth; src += 8; } while (--height); } void Gdi::unkDecode8() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; uint h = _numLinesToProcess; _currentX = 8; for (;;) { uint run = (*src++) + 1; byte color = *src++; do { *dst = color; NEXT_ROW} while (--run); } } void Gdi::unkDecode9() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; unsigned char c, bits, color, run; int x, y, i, z; uint buffer = 0, mask = 128; int h = _numLinesToProcess; x = y = i = z = run = 0; _currentX = 8; for (;;) { c = 0; for (i = 0; i < 4; i++) { READ_256BIT; c += (bits << i); } switch ((c >> 2)) { case 0: color = 0; for (i = 0; i < 4; i++) { READ_256BIT; color += bits << i; } for (i = 0; i < ((c & 3) + 2); i++) { *dst = (run * 16 + color); NEXT_ROW} break; case 1: for (i = 0; i < ((c & 3) + 1); i++) { color = 0; for (z = 0; z < 4; z++) { READ_256BIT; color += bits << z; } *dst = (run * 16 + color); NEXT_ROW} break; case 2: run = 0; for (i = 0; i < 4; i++) { READ_256BIT; run += bits << i; } break; } } } void Gdi::unkDecode10() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; int i; unsigned char local_palette[256], numcolors = *src++; uint h = _numLinesToProcess; for (i = 0; i < numcolors; i++) local_palette[i] = *src++; _currentX = 8; for (;;) { byte color = *src++; if (color < numcolors) { *dst = local_palette[color]; NEXT_ROW} else { uint run = color - numcolors + 1; color = *src++; do { *dst = color; NEXT_ROW} while (--run); } } } void Gdi::unkDecode11() { byte *src = _smap_ptr; byte *dst = _bgbak_ptr; int bits, i; uint buffer = 0, mask = 128; unsigned char inc = 1, color = *src++; _currentX = 8; do { _tempNumLines = _numLinesToProcess; do { *dst = color; dst += _vm->_realWidth; for (i = 0; i < 3; i++) { READ_256BIT if (!bits) break; } switch (i) { case 1: inc = -inc; color -= inc; break; case 2: color -= inc; break; case 3: color = 0; inc = 1; for (i = 0; i < 8; i++) { READ_256BIT color += bits << i; } break; } } while (--_tempNumLines); dst -= _vertStripNextInc; } while (--_currentX); } #undef NEXT_ROW #undef READ_256BIT #undef READ_BIT #undef FILL_BITS void Scumm::restoreCharsetBg() { _bkColor = 0; if (gdi._mask_left != -1) { restoreBG(gdi._mask_left, gdi._mask_top, gdi._mask_right, gdi._mask_bottom); charset._hasMask = false; gdi._mask_left = -1; charset._strLeft = -1; charset._left = -1; } charset._xpos2 = string[0].xpos; charset._ypos2 = string[0].ypos; } void Scumm::restoreBG(int left, int top, int right, int bottom) { VirtScreen *vs; int topline, height, width, widthmod; byte *backbuff, *bgbak, *mask; if (left == right || top == bottom) return; if (top < 0) top = 0; if ((vs = findVirtScreen(top)) == NULL) return; topline = vs->topline; height = topline + vs->height; if (vs->number == 0) { left += _lastXstart - vs->xstart; right += _lastXstart - vs->xstart; } right++; if (left < 0) left = 0; if (right < 0) right = 0; if (left > _realWidth) return; if (right > _realWidth) right = _realWidth; if (bottom >= height) bottom = height; updateDirtyRect(vs->number, left, right, top - topline, bottom - topline, 0x40000000); height = (top - topline) * _realWidth + vs->xstart + left; backbuff = vs->screenPtr + height; bgbak = getResourceAddress(rtBuffer, vs->number + 5) + height; mask = getResourceAddress(rtBuffer, 9) + top * NUM_STRIPS + (left >> 3) + _screenStartStrip; if (vs->number == 0) { mask += vs->topline * 216; } height = bottom - top; width = right - left; widthmod = (width >> 2) + 2; if (vs->alloctwobuffers && _currentRoom != 0 /*&& _vars[VAR_V5_DRAWFLAGS]&2 */ ) { blit(backbuff, bgbak, width, height); if (vs->number == 0 && charset._hasMask && height) { do { memset(mask, 0, widthmod); mask += NUM_STRIPS; } while (--height); } } else { if (height) { do { memset(backbuff, _bkColor, width); backbuff += _realWidth; } while (--height); } } } void Scumm::updateDirtyRect(int virt, int left, int right, int top, int bottom, uint32 dirtybits) { VirtScreen *vs = &virtscr[virt]; int lp, rp; uint32 *sp; int num; if (top > vs->height || left > vs->width || right < 0 || bottom < 0) return; if (top < 0) top = 0; if (left < 0) left = 0; if (bottom > vs->height) bottom = vs->height; if (right > vs->width) right = vs->width; if (virt == 0 && dirtybits) { rp = (right >> 3) + _screenStartStrip; lp = (left >> 3) + _screenStartStrip; if (lp < 0) lp = 0; if (rp >= _realHeight) rp = _realHeight; if (lp <= rp) { num = rp - lp + 1; sp = &gfxUsageBits[lp]; do { *sp++ |= dirtybits; } while (--num); } } setVirtscreenDirty(vs, left, top, right, bottom); } void Scumm::setVirtscreenDirty(VirtScreen *vs, int left, int top, int right, int bottom) { int lp = left >> 3; int rp = right >> 3; if (lp >= NUM_STRIPS || rp < 0) return; if (lp < 0) lp = 0; if (rp >= NUM_STRIPS) rp = NUM_STRIPS - 1; while (lp <= rp) { if (top < vs->tdirty[lp]) vs->tdirty[lp] = top; if (bottom > vs->bdirty[lp]) vs->bdirty[lp] = bottom; lp++; } } VirtScreen *Scumm::findVirtScreen(int y) { VirtScreen *vs = virtscr; int i; for (i = 0; i < 3; i++, vs++) { if (y >= vs->topline && y < vs->topline + vs->height) { return _curVirtScreen = vs; } } return _curVirtScreen = NULL; } void Scumm::unkScreenEffect1() { /* XXX: not implemented */ warning("stub unkScreenEffect1()"); } void Scumm::unkScreenEffect2() { /* XXX: not implemented */ warning("stub unkScreenEffect2()"); } void Scumm::unkScreenEffect3() { /* XXX: not implemented */ warning("stub unkScreenEffect3()"); } void Scumm::unkScreenEffect4() { /* XXX: not implemented */ warning("stub unkScreenEffect4()"); } /* *INDENT-OFF* */ static const int8 screen_eff7_table1[4][16] = { { 1, 1, -1, 1, -1, 1, -1, -1, 1, -1, -1, -1, 1, 1, 1, -1}, { 0, 1, 2, 1, 2, 0, 2, 1, 2, 0, 2, 1, 0, 0, 0, 0}, {-2, -1, 0, -1, -2, -1, -2, 0, -2, -1, -2, 0, 0, 0, 0, 0}, { 0, -1, -2, -1, -2, 0, -2, -1, -2, 0, -2, -1, 0, 0, 0, 0} }; static const byte screen_eff7_table2[4][16] = { { 0, 0, 39, 0, 39, 0, 39, 24, 0, 24, 39, 24, 0, 0, 0, 24}, { 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 255, 0, 0, 0}, {39, 24, 39, 24, 39, 24, 39, 24, 38, 24, 38, 24, 255, 0, 0, 0}, { 0, 24, 39, 24, 39, 0, 39, 24, 38, 0, 38, 24, 255, 0, 0, 0} }; static const byte transition_num_of_iterations[4] = { 13, 25, 25, 25 }; /* *INDENT-ON* */ /* Transition effect. There are four different effects possible, * indicated by the value of a: * 0: Iris effect * 1: ? * 2: ? * 3: ? * All effects basically operate on 8x8 blocks of the screen. These blocks * are updated in a certain order; the exact order determines how the * effect appears to the user. */ void Scumm::transitionEffect(int a) { int delta[16]; // Offset applied during each iteration int tab_2[16]; int i, j; int bottom; int l, t, r, b; for (i = 0; i < 16; i++) { delta[i] = screen_eff7_table1[a][i]; j = screen_eff7_table2[a][i]; if (j == 24) j = (virtscr[0].height >> 3) - 1; tab_2[i] = j; } bottom = virtscr[0].height >> 3; for (j = 0; j < transition_num_of_iterations[a]; j++) { for (i = 0; i < 4; i++) { l = tab_2[i * 4]; t = tab_2[i * 4 + 1]; r = tab_2[i * 4 + 2]; b = tab_2[i * 4 + 3]; if (t == b) { while (l <= r) { if (l >= 0 && l < NUM_STRIPS && (uint) t < (uint) bottom) { virtscr[0].tdirty[l] = t << 3; virtscr[0].bdirty[l] = (t + 1) << 3; } l++; } } else { if (l < 0 || l >= NUM_STRIPS || b <= t) continue; if (b > bottom) b = bottom; virtscr[0].tdirty[l] = t << 3; virtscr[0].bdirty[l] = (b + 1) << 3; } updateDirtyScreen(0); } for (i = 0; i < 16; i++) tab_2[i] += delta[i]; // Draw the current state to the screen and wait half a sec so the user // can watch the effect taking place. updatePalette(); _system->update_screen(); waitForTimer(30); } } // Update width x height areas of the screen, in random order, until the whole // screen has been updated. For instance: // // dissolveEffect(1, 1) produces a pixel-by-pixel dissolve // dissolveEffect(8, 8) produces a square-by-square dissolve // dissolveEffect(virtsrc[0].width, 1) produces a line-by-line dissolve void Scumm::dissolveEffect(int width, int height) { VirtScreen *vs = &virtscr[0]; int *offsets; int blits_before_refresh, blits; int x, y; int w, h; int i; // There's probably some less memory-hungry way of doing this. But // since we're only dealing with relatively small images, it shouldn't // be too bad. w = vs->width / width; h = vs->height / height; // When used used correctly, vs->width % width and vs->height % height // should both be zero, but just to be safe... if (vs->width % width) w++; if (vs->height % height) h++; offsets = (int *) malloc(w * h * sizeof(int)); if (offsets == NULL) { warning("dissolveEffect: out of memory"); return; } // Create a permutation of offsets into the frame buffer if (width == 1 && height == 1) { // Optimized case for pixel-by-pixel dissolve for (i = 0; i < vs->size; i++) offsets[i] = i; for (i = 1; i < w * h; i++) { int j; j = getRandomNumber(i - 1); offsets[i] = offsets[j]; offsets[j] = i; } } else { int *offsets2; for (i = 0, x = 0; x < vs->width; x += width) for (y = 0; y < vs->height; y += height) offsets[i++] = y * vs->width + x; offsets2 = (int *) malloc(w * h * sizeof(int)); if (offsets2 == NULL) { warning("dissolveEffect: out of memory"); free(offsets); return; } memcpy(offsets2, offsets, w * h * sizeof(int)); for (i = 1; i < w * h; i++) { int j; j = getRandomNumber(i - 1); offsets[i] = offsets[j]; offsets[j] = offsets2[i]; } free(offsets2); } // Blit the image piece by piece to the screen. The idea here is that // the whole update should take about a quarter of a second, assuming // most of the time is spent in waitForTimer(). It looks good to me, // but might still need some tuning. updatePalette(); blits = 0; blits_before_refresh = (3 * w * h) / 25; for (i = 0; i < w * h; i++) { x = offsets[i] % vs->width; y = offsets[i] / vs->width; _system->copy_rect(vs->screenPtr + vs->xstart + y * vs->width + x, vs->width, x, y + vs->topline, width, height); if (++blits >= blits_before_refresh) { blits = 0; _system->update_screen(); waitForTimer(30); } } free(offsets); if (blits != 0) { _system->update_screen(); waitForTimer(30); } } void Scumm::scrollEffect(int dir) { VirtScreen *vs = &virtscr[0]; int x, y; int step; if ((dir == 0) || (dir == 1)) step = vs->height; else step = vs->width; step = (step * kPictureDelay) / kScrolltime; switch (dir) { case 0: //up y = 1 + step; while (y < vs->height) { _system->move_screen(0, -step, vs->height); _system->copy_rect(vs->screenPtr + vs->xstart + (y - step) * vs->width, vs->width, 0, vs->height - step, vs->width, step); _system->update_screen(); waitForTimer(kPictureDelay); y += step; } break; case 1: // down y = 1 + step; while (y < vs->height) { _system->move_screen(0, step, vs->height); _system->copy_rect(vs->screenPtr + vs->xstart + vs->width * (vs->height-y), vs->width, 0, 0, vs->width, step); _system->update_screen(); waitForTimer(kPictureDelay); y += step; } break; case 2: // left x = 1 + step; while (x < vs->width) { _system->move_screen(-step, 0, vs->height); _system->copy_rect(vs->screenPtr + vs->xstart + x - step, vs->width, vs->width - step, 0, step, vs->height); _system->update_screen(); waitForTimer(kPictureDelay); x += step; } break; case 3: // right x = 1 + step; while (x < vs->width) { _system->move_screen(step, 0, vs->height); _system->copy_rect(vs->screenPtr + vs->xstart + vs->width - x, vs->width, 0, 0, step, vs->height); _system->update_screen(); waitForTimer(kPictureDelay); x += step; } break; } } void Scumm::unkScreenEffect6() { if (_gameId == GID_LOOM256) dissolveEffect(1, 1); else dissolveEffect(8, 4); } void Scumm::unkScreenEffect5(int a) { // unkScreenEffect5(0), which is used by FOA during the opening // cutscene when Indy opens the small statue, has been replaced by // dissolveEffect(1, 1). // // I still don't know what unkScreenEffect5(1) is supposed to do. /* XXX: not implemented */ warning("stub unkScreenEffect(%d)", a); } void Scumm::setShake(int mode) { if (_shakeEnabled != (mode != 0)) _fullRedraw = true; _shakeEnabled = mode != 0; _shakeFrame = 0; _system->set_shake_pos(0); } void Gdi::clearUpperMask() { memset(_vm->getResourceAddress(rtBuffer, 9), 0, _imgBufOffs[1] - _imgBufOffs[0] ); } void Scumm::clampCameraPos(ScummPoint *pt) { if (pt->x < _vars[VAR_CAMERA_MIN_X]) pt->x = _vars[VAR_CAMERA_MIN_X]; if (pt->x > _vars[VAR_CAMERA_MAX_X]) pt->x = _vars[VAR_CAMERA_MAX_X]; if (pt->y < _vars[VAR_CAMERA_MIN_Y]) pt->y = _vars[VAR_CAMERA_MIN_Y]; if (pt->y > _vars[VAR_CAMERA_MAX_Y]) pt->y = _vars[VAR_CAMERA_MAX_Y]; } void Scumm::moveCamera() { if (_features & GF_AFTER_V7) { ScummPoint old = camera._cur; Actor *a = NULL; if (camera._follows) { a = derefActorSafe(camera._follows, "moveCamera"); if (abs(camera._cur.x - a->x) > _vars[VAR_CAMERA_THRESHOLD_X] || abs(camera._cur.y - a->y) > _vars[VAR_CAMERA_THRESHOLD_Y]) { camera._movingToActor = true; if (_vars[VAR_CAMERA_THRESHOLD_X] == 0) camera._cur.x = a->x; if (_vars[VAR_CAMERA_THRESHOLD_Y] == 0) camera._cur.y = a->y; clampCameraPos(&camera._cur); } } else { camera._movingToActor = false; } if (camera._movingToActor) { camera._dest.x = a->x; camera._dest.y = a->y; } assert(camera._cur.x >= (_realWidth / 2) && camera._cur.y >= (_realHeight / 2)); clampCameraPos(&camera._dest); if (camera._cur.x < camera._dest.x) { camera._cur.x += _vars[VAR_CAMERA_SPEED_X]; if (camera._cur.x > camera._dest.x) camera._cur.x = camera._dest.x; } if (camera._cur.x > camera._dest.x) { camera._cur.x -= _vars[VAR_CAMERA_SPEED_X]; if (camera._cur.x < camera._dest.x) camera._cur.x = camera._dest.x; } if (camera._cur.y < camera._dest.y) { camera._cur.y += _vars[VAR_CAMERA_SPEED_Y]; if (camera._cur.y > camera._dest.y) camera._cur.y = camera._dest.y; } if (camera._cur.y > camera._dest.y) { camera._cur.y -= _vars[VAR_CAMERA_SPEED_Y]; if (camera._cur.y < camera._dest.y) camera._cur.y = camera._dest.y; } if (camera._cur.x == camera._dest.x && camera._cur.y == camera._dest.y) { camera._movingToActor = false; camera._accel.x = camera._accel.y = 0; _vars[VAR_CAMERA_SPEED_X] = _vars[VAR_CAMERA_SPEED_Y] = 0; } else { camera._accel.x += _vars[VAR_CAMERA_ACCEL_X]; camera._accel.y += _vars[VAR_CAMERA_ACCEL_Y]; _vars[VAR_CAMERA_SPEED_X] += camera._accel.x / 100; _vars[VAR_CAMERA_SPEED_Y] += camera._accel.y / 100; if (_vars[VAR_CAMERA_SPEED_X] < 8) _vars[VAR_CAMERA_SPEED_X] = 8; if (_vars[VAR_CAMERA_SPEED_Y] < 8) _vars[VAR_CAMERA_SPEED_Y] = 8; } cameraMoved(); if (camera._cur.x != old.x || camera._cur.y != old.y) { _vars[VAR_CAMERA_POS_X] = camera._cur.x; _vars[VAR_CAMERA_POS_Y] = camera._cur.y; _vars[VAR_CAMERA_DEST_X] = camera._dest.x; _vars[VAR_CAMERA_DEST_Y] = camera._dest.y; _vars[VAR_CAMERA_FOLLOWED_ACTOR] = camera._follows; if (_vars[VAR_SCROLL_SCRIPT]) runScript(_vars[VAR_SCROLL_SCRIPT], 0, 0, 0); } } else { int pos = camera._cur.x; int actorx, t; Actor *a = NULL; camera._cur.x &= 0xFFF8; if (camera._cur.x < _vars[VAR_CAMERA_MIN_X]) { if (_vars[VAR_CAMERA_FAST_X]) camera._cur.x = _vars[VAR_CAMERA_MIN_X]; else camera._cur.x += 8; cameraMoved(); return; } if (camera._cur.x > _vars[VAR_CAMERA_MAX_X]) { if (_vars[VAR_CAMERA_FAST_X]) camera._cur.x = _vars[VAR_CAMERA_MAX_X]; else camera._cur.x -= 8; cameraMoved(); return; } if (camera._mode == CM_FOLLOW_ACTOR) { a = derefActorSafe(camera._follows, "moveCamera"); actorx = a->x; t = (actorx >> 3) - _screenStartStrip; if (t < camera._leftTrigger || t > camera._rightTrigger) { if (_vars[VAR_CAMERA_FAST_X]) { if (t > 35) camera._dest.x = actorx + 80; if (t < 5) camera._dest.x = actorx - 80; } else camera._movingToActor = 1; } } if (camera._movingToActor) { a = derefActorSafe(camera._follows, "moveCamera(2)"); camera._dest.x = a->x; } if (camera._dest.x < _vars[VAR_CAMERA_MIN_X]) camera._dest.x = _vars[VAR_CAMERA_MIN_X]; if (camera._dest.x > _vars[VAR_CAMERA_MAX_X]) camera._dest.x = _vars[VAR_CAMERA_MAX_X]; if (_vars[VAR_CAMERA_FAST_X]) { camera._cur.x = camera._dest.x; } else { if (camera._cur.x < camera._dest.x) camera._cur.x += 8; if (camera._cur.x > camera._dest.x) camera._cur.x -= 8; } /* a is set a bit above */ if (camera._movingToActor && camera._cur.x >> 3 == a->x >> 3) { camera._movingToActor = 0; } cameraMoved(); if (pos != camera._cur.x && _vars[VAR_SCROLL_SCRIPT]) { _vars[VAR_CAMERA_POS_X] = camera._cur.x; runScript(_vars[VAR_SCROLL_SCRIPT], 0, 0, 0); } } } void Scumm::cameraMoved() { if (_features & GF_AFTER_V7) { assert(camera._cur.x >= (_realWidth / 2) && camera._cur.y >= (_realHeight / 2)); _screenStartStrip = (camera._cur.x - (_realWidth / 2)) >> 3; _screenEndStrip = _screenStartStrip + NUM_STRIPS - 1; virtscr[0].xstart = _screenStartStrip << 3; _screenLeft = camera._cur.x - (_realWidth / 2); _screenTop = camera._cur.y - (_realHeight / 2); } else { if (camera._cur.x < (_realWidth / 2)) { camera._cur.x = (_realWidth / 2); } else if (camera._cur.x + (_realWidth / 2) >= _scrWidth) { camera._cur.x = _scrWidth - (_realWidth / 2); } _screenStartStrip = (camera._cur.x >> 3) - 20; _screenEndStrip = _screenStartStrip + NUM_STRIPS - 1; virtscr[0].xstart = _screenStartStrip << 3; } } void Scumm::panCameraTo(int x, int y) { if (_features & GF_AFTER_V7) { camera._follows = 0; camera._dest.x = x; camera._dest.y = y; } else { camera._dest.x = x; camera._mode = CM_PANNING; camera._movingToActor = 0; } } void Scumm::actorFollowCamera(int act) { if (!(_features & GF_AFTER_V7)) { int old; /* mi1 compatibilty */ if (act == 0) { camera._mode = CM_NORMAL; camera._follows = 0; camera._movingToActor = 0; return; } old = camera._follows; setCameraFollows(derefActorSafe(act, "actorFollowCamera")); if (camera._follows != old) runHook(0); camera._movingToActor = 0; } } void Scumm::setCameraAtEx(int at) { if (!(_features & GF_AFTER_V7)) { camera._mode = CM_NORMAL; camera._cur.x = at; setCameraAt(at, 0); camera._movingToActor = 0; } } void Scumm::palManipulateInit(int start, int end, int string_id, int time) { _palManipStart = start; _palManipEnd = end; _palManipCounter = 0; byte *startptr = getResourceAddress(rtTemp, 4); if (startptr) nukeResource(rtTemp, 4); startptr = createResource(rtTemp, 4, 256 * 6); if (!startptr) { warning("palManipulateInit(%d,%d,%d,%d): Cannot create rtTemp resource index 4\n", start, end, string_id, time); return; } startptr += _palManipStart * 6; byte *endptr = getResourceAddress(rtTemp, 5); if (endptr) nukeResource(rtTemp, 5); endptr = createResource(rtTemp, 5, 256 * 6); if (!endptr) { warning("palManipulateInit(%d,%d,%d,%d): Cannot create rtTemp resource index 5\n", start, end, string_id, time); return; } endptr += _palManipStart * 6; byte *curptr = _currentPalette + _palManipStart * 3; byte *string1ptr = getStringAddress(string_id) + _palManipStart; byte *string2ptr = getStringAddress(string_id + 1) + _palManipStart; byte *string3ptr = getStringAddress(string_id + 2) + _palManipStart; if (!string1ptr || !string2ptr || !string3ptr) { warning("palManipulateInit(%d,%d,%d,%d): Cannot obtain string resources %d, %d and %d\n", start, end, string_id, time, string_id, string_id + 1, string_id + 2); return; } int i; for (i = _palManipStart; i <= _palManipEnd; ++i) { *((uint16 *)startptr) = ((uint16) *curptr++) << 8; *((uint16 *)endptr) = ((uint16) *string1ptr++) << 8; startptr += 2; endptr += 2; *((uint16 *)startptr) = ((uint16) *curptr++) << 8; *((uint16 *)endptr) = ((uint16) *string2ptr++) << 8; startptr += 2; endptr += 2; *((uint16 *)startptr) = ((uint16) *curptr++) << 8; *((uint16 *)endptr) = ((uint16) *string3ptr++) << 8; startptr += 2; endptr += 2; } _palManipCounter = time; } void Scumm::palManipulate() { byte *srcptr, *destptr; byte *pal; int i, j; if (!_palManipCounter) return; srcptr = getResourceAddress(rtTemp, 4) + _palManipStart * 6; destptr = getResourceAddress(rtTemp, 5) + _palManipStart * 6; if (!srcptr || !destptr) return; pal = _currentPalette + _palManipStart * 3; i = _palManipStart; while (i < _palManipEnd) { j = (*((uint16 *)srcptr) += (*(uint16 *)destptr - *((uint16 *)srcptr)) / _palManipCounter); *pal++ = j >> 8; srcptr += 2; destptr += 2; j = (*((uint16 *)srcptr) += (*(uint16 *)destptr - *((uint16 *)srcptr)) / _palManipCounter); *pal++ = j >> 8; srcptr += 2; destptr += 2; j = (*((uint16 *)srcptr) += (*(uint16 *)destptr - *((uint16 *)srcptr)) / _palManipCounter); *pal++ = j >> 8; srcptr += 2; destptr += 2; i++; } setDirtyColors(_palManipStart, _palManipEnd); _palManipCounter--; if (!_palManipCounter) { nukeResource(rtTemp, 4); nukeResource(rtTemp, 5); } } void Scumm::unkRoomFunc3(int palstart, int palend, int rfact, int gfact, int bfact) { byte *basepal = getPalettePtr(); byte *pal = basepal; byte *compareptr; byte *table = _shadowPalette; int i; // This is a correction of the patch supplied for BUG #588501. // It has been tested in all four known rooms where unkRoomFunc3 is used: // // 1) FOA Room 53: subway departing Knossos for Atlantis. // 2) FOA Room 48: subway crashing into the Atlantis entrance area // 3) FOA Room 82: boat/sub shadows while diving near Thera // 4) FOA Room 23: the big machine room inside Atlantis // // The implementation behaves well in all tests. // Pixel comparisons show that the resulting palette entries being // derived from the shadow palette generated here occassionally differ // slightly from the ones derived in the LEC executable. // Not sure yet why, but the differences are VERY minor. // // There seems to be no explanation for why this function is called // from within Room 23 (the big machine), as it has no shadow effects // and thus doesn't result in any visual differences. for (i = 0; i <= 255; i++) { int r = (int) (*pal++ * rfact) >> 8; int g = (int) (*pal++ * gfact) >> 8; int b = (int) (*pal++ * bfact) >> 8; // The following functionality is similar to remapPaletteColor, except // 1) we have to work off the original CLUT rather than the current palette, and // 2) the target shadow palette entries must be bounded to the upper and lower // bounds provided by the opcode. (This becomes significant in Room 48, but // is not an issue in all other known case studies.) int j; int ar, ag, ab; uint sum, diff, bestsum, bestitem = 0; compareptr = basepal + palstart * 3; if (r > 255) r = 255; if (g > 255) g = 255; if (b > 255) b = 255; bestsum = (uint) - 1; r &= ~3; g &= ~3; b &= ~3; for (j = palstart; j <= palend; j++, compareptr += 3) { ar = compareptr[0] & ~3; ag = compareptr[1] & ~3; ab = compareptr[2] & ~3; if (ar == r && ag == g && ab == b) { bestitem = j; break; } diff = ar - r; sum = diff * diff * 3; diff = ag - g; sum += diff * diff * 6; diff = ab - b; sum += diff * diff * 2; if (sum < bestsum) { bestsum = sum; bestitem = j; } } *table++ = bestitem; } } void Scumm::swapPalColors(int a, int b) { byte *ap, *bp; byte t; if ((uint) a >= 256 || (uint) b >= 256) error("swapPalColors: invalid values, %d, %d", a, b); ap = &_currentPalette[a * 3]; bp = &_currentPalette[b * 3]; t = ap[0]; ap[0] = bp[0]; bp[0] = t; t = ap[1]; ap[1] = bp[1]; bp[1] = t; t = ap[2]; ap[2] = bp[2]; bp[2] = t; setDirtyColors(a, b); } void Gdi::resetBackground(int top, int bottom, int strip) { VirtScreen *vs = &_vm->virtscr[0]; int offs; if (top < vs->tdirty[strip]) vs->tdirty[strip] = top; if (bottom > vs->bdirty[strip]) vs->bdirty[strip] = bottom; offs = (top * NUM_STRIPS + _vm->_screenStartStrip + strip); _mask_ptr = _vm->getResourceAddress(rtBuffer, 9) + offs; _bgbak_ptr = _vm->getResourceAddress(rtBuffer, 5) + (offs << 3); _backbuff_ptr = vs->screenPtr + (offs << 3); _numLinesToProcess = bottom - top; if (_numLinesToProcess) { if ((_vm->_features & GF_AFTER_V6) || (_vm->_vars[_vm->VAR_CURRENT_LIGHTS] & LIGHTMODE_screen)) { if (_vm->hasCharsetMask(strip << 3, top, (strip + 1) << 3, bottom)) draw8ColWithMasking(); else _vm->blit(_backbuff_ptr, _bgbak_ptr, 8, _numLinesToProcess); } else { clear8Col(); } } } void Scumm::setPalColor(int idx, int r, int g, int b) { _currentPalette[idx * 3 + 0] = r; _currentPalette[idx * 3 + 1] = g; _currentPalette[idx * 3 + 2] = b; setDirtyColors(idx, idx); } void Scumm::setCursorHotspot2(int x, int y) { _cursorHotspotX = x; _cursorHotspotY = y; } byte Scumm::isMaskActiveAt(int l, int t, int r, int b, byte *mem) { int w, h, i; l >>= 3; if (l < 0) l = 0; if (t < 0) t = 0; r >>= 3; if (r > NUM_STRIPS-1) r = NUM_STRIPS-1; mem += l + t * NUM_STRIPS; w = r - l; h = b - t + 1; do { for (i = 0; i <= w; i++) if (mem[i]) { return true; } mem += NUM_STRIPS; } while (--h); return false; } void Scumm::setPalette(int palindex) { byte *pals; _curPalIndex = palindex; pals = getPalettePtr(); if (pals == NULL) error("invalid palette %d", palindex); setPaletteFromPtr(pals); } byte *Scumm::findPalInPals(byte *pal, int idx) { byte *offs; uint32 size; pal = findResource(MKID('WRAP'), pal); if (pal == NULL) return NULL; offs = findResourceData(MKID('OFFS'), pal); if (offs == NULL) return NULL; size = getResourceDataSize(offs) >> 2; if ((uint32)idx >= (uint32)size) return NULL; return offs + READ_LE_UINT32(offs + idx * sizeof(uint32)); } byte *Scumm::getPalettePtr() { byte *cptr; cptr = getResourceAddress(rtRoom, _roomResource); if (_CLUT_offs) { cptr += _CLUT_offs; } else { cptr = findPalInPals(cptr + _PALS_offs, _curPalIndex); } return cptr; } void Scumm::darkenPalette(int startColor, int endColor, int redScale, int greenScale, int blueScale) { if (startColor <= endColor) { byte *cptr, *cur; int num; int color; cptr = getPalettePtr() + startColor * 3; cur = _currentPalette + startColor * 3; num = endColor - startColor + 1; do { color = *cptr++; if (redScale != 0xFF) color = color * redScale / 0xFF; if (color > 255) color = 255; *cur++ = color; color = *cptr++; if (greenScale != 0xFF) color = color * greenScale / 0xFF; if (color > 255) color = 255; *cur++ = color; color = *cptr++; if (blueScale != 0xFF) color = color * blueScale / 0xFF; if (color > 255) color = 255; *cur++ = color; } while (--num); setDirtyColors(startColor, endColor); } } void Scumm::desaturatePalette() { // FIXME: Should this be made to take a range of colors instead? byte *cur; int i; cur = _currentPalette; for (i = 0; i <= 255; i++) { int max, min; int brightness; // An algorithm that is good enough for The GIMP should be // good enough for us... max = (cur[0] > cur[1]) ? cur[0] : cur[1]; if (cur[2] > max) max = cur[2]; min = (cur[0] < cur[1]) ? cur[0] : cur[1]; if (cur[2] < min) min = cur[2]; brightness = (min + max) / 2; *cur++ = brightness; *cur++ = brightness; *cur++ = brightness; } setDirtyColors(0, 255); } void Scumm::grabCursor(int x, int y, int w, int h) { VirtScreen *vs = findVirtScreen(y); if (vs == NULL) { warning("grabCursor: invalid Y %d", y); return; } grabCursor(vs->screenPtr + (y - vs->topline) * _realWidth + x, w, h); } void Scumm::decompressBomp(byte *dst, byte *src, int w, int h) { int len, num; byte code, color; src += 8; do { len = w; src += 2; while (len) { code = *src++; num = (code >> 1) + 1; if (num > len) num = len; len -= num; if (code & 1) { color = *src++; do *dst++ = color; while (--num); } else { do *dst++ = *src++; while (--num); } } } while (--h); } void Scumm::grabCursor(byte *ptr, int width, int height) { uint size; byte *dst; size = width * height; if (size > sizeof(_grabbedCursor)) error("grabCursor: grabbed cursor too big"); _cursorWidth = width; _cursorHeight = height; _cursorAnimate = 0; dst = _grabbedCursor; for (; height; height--) { memcpy(dst, ptr, width); dst += width; ptr += _realWidth; } updateCursor(); } void Scumm::useIm01Cursor(byte *im, int w, int h) { VirtScreen *vs = &virtscr[0]; w <<= 3; h <<= 3; drawBox(0, 0, w - 1, h - 1, 0xFF); vs->alloctwobuffers = false; gdi._disable_zbuffer = true; gdi.drawBitmap(im, vs, _screenStartStrip, 0, h, 0, w >> 3, 0); vs->alloctwobuffers = true; gdi._disable_zbuffer = false; grabCursor(vs->screenPtr + vs->xstart, w, h); blit(vs->screenPtr + vs->xstart, getResourceAddress(rtBuffer, 5) + vs->xstart, w, h); } void Scumm::updateCursor() { _system->set_mouse_cursor(_grabbedCursor, _cursorWidth, _cursorHeight, _cursorHotspotX, _cursorHotspotY); } void Scumm::animateCursor() { if (_cursorAnimate) { if (!(_cursorAnimateIndex & 0x3)) { decompressDefaultCursor((_cursorAnimateIndex >> 2) & 3); } _cursorAnimateIndex++; } } void Scumm::useBompCursor(byte *im, int width, int height) { uint size; width <<= 3; height <<= 3; size = width * height; if (size > sizeof(_grabbedCursor)) error("useBompCursor: cursor too big"); _cursorWidth = width; _cursorHeight = height; _cursorAnimate = 0; decompressBomp(_grabbedCursor, im + 10, width, height); updateCursor(); } static const byte default_cursor_colors[4] = { 15, 15, 7, 8 }; void Scumm::decompressDefaultCursor(int idx) { int i; byte color; memset(_grabbedCursor, 0xFF, sizeof(_grabbedCursor)); _cursorWidth = 16; _cursorHeight = 16; _cursorHotspotX = 8; _cursorHotspotY = 8; color = default_cursor_colors[idx]; for (i = 0; i < 16; i++) { if ((i < 7) || (i > 9)) { _grabbedCursor[16 * 8 + i] = color; _grabbedCursor[16 * i + 8] = color; } } updateCursor(); } int Scumm::remapPaletteColor(int r, int g, int b, uint threshold) { int i; int ar, ag, ab; uint sum, j, bestsum, bestitem = 0; byte *pal = _currentPalette; if (r > 255) r = 255; if (g > 255) g = 255; if (b > 255) b = 255; bestsum = (uint) - 1; r &= ~3; g &= ~3; b &= ~3; for (i = 0; i < 256; i++, pal += 3) { ar = pal[0] & ~3; ag = pal[1] & ~3; ab = pal[2] & ~3; if (ar == r && ag == g && ab == b) return i; j = ar - r; sum = j * j * 3; j = ag - g; sum += j * j * 6; j = ab - b; sum += j * j * 2; if (sum < bestsum) { bestsum = sum; bestitem = i; } } if (threshold != (uint) - 1 && bestsum > threshold * threshold * (2 + 3 + 6)) { pal = _currentPalette + (256 - 2) * 3; for (i = 254; i > 48; i--, pal -= 3) { if (pal[0] >= 252 && pal[1] >= 252 && pal[2] >= 252) { setPalColor(i, r, g, b); return i; } } } return bestitem; } // param3= clipping // param2= mirror // param1= never used ? void Scumm::drawBomp(BompDrawData *bd, int param1, byte *dataPtr, int param2, int param3) { byte *dest = bd->out + bd->y * bd->outwidth, *src; int h = bd->srcheight; bool inside; if (h == 0 || bd->srcwidth == 0) return; inside = (bd->x >= 0) && (bd->y >= 0) && (bd->x <= bd->outwidth - bd->srcwidth) && (bd->y <= bd->outheight - bd->srcheight); if (1 || bd->scale_x == 255 && bd->scale_y == 255) { /* Routine used when no scaling is needed */ if (inside) { dest += bd->x; src = bd->dataptr; do { byte code, color; uint len = bd->srcwidth, num, i; byte *d = dest; src += 2; do { code = *src++; num = (code >> 1) + 1; if (num > len) num = len; len -= num; if (code & 1) { color = *src++; if (color != 255) { do *d++ = color; while (--num); } else { d += num; } } else { for (i = 0; i < num; i++) if ((color = src[i]) != 255) d[i] = color; d += num; src += num; } } while (len); dest += bd->outwidth; } while (--h); } else { uint y = bd->y; src = bd->dataptr; do { byte color; uint len, num; uint x; if ((uint) y >= (uint) bd->outheight) { src += READ_LE_UINT16(src) + 2; continue; } len = bd->srcwidth; x = bd->x; src += 2; do { byte code = *src++; num = (code >> 1) + 1; if (num > len) num = len; len -= num; if (code & 1) { if ((color = *src++) != 255) { do { if ((uint) x < (uint) bd->outwidth) dest[x] = color; } while (++x, --num); } else { x += num; } } else { do { if ((color = *src++) != 255 && (uint) x < (uint) bd->outwidth) dest[x] = color; } while (++x, --num); } } while (len); } while (dest += bd->outwidth, y++, --h); } } else { /* scaling of bomp images not supported yet */ } CHECK_HEAP; } /* Yazoo: This function create the specialPalette used for semi-transparency in SamnMax */ void Scumm::createSpecialPalette(int16 a, int16 b, int16 c, int16 d, int16 e, int16 colorMin, int16 colorMax) { byte *palPtr; byte *curPtr; byte *searchPtr; byte readComp1; byte readComp2; byte readComp3; int colorComp1; int colorComp2; int colorComp3; int searchComp1; int searchComp2; int searchComp3; short int bestResult; short int currentResult; byte currentIndex; int i; int j; palPtr = getPalettePtr(); for (i = 0; i < 256; i++) _proc_special_palette[i] = i; curPtr = palPtr + colorMin * 3; for (i = colorMin; i < colorMax; i++) { readComp1 = *(curPtr++); readComp2 = *(curPtr++); readComp3 = *(curPtr++); colorComp1 = ((readComp1) * c) >> 8; colorComp2 = ((readComp2) * d) >> 8; colorComp3 = ((readComp3) * e) >> 8; searchPtr = palPtr; bestResult = 32000; currentIndex = 0; for (j = a; j < b; j++) { searchComp1 = (*searchPtr++); searchComp2 = (*searchPtr++); searchComp3 = (*searchPtr++); currentResult = abs(searchComp1 - colorComp1) + abs(searchComp2 - colorComp2) + abs(searchComp3 - colorComp3); if (currentResult < bestResult) { _proc_special_palette[i] = currentIndex; bestResult = currentResult; } currentIndex++; } } }