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Diffstat (limited to 'engines/sci/gui/gui_screen.cpp')
| -rw-r--r-- | engines/sci/gui/gui_screen.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/engines/sci/gui/gui_screen.cpp b/engines/sci/gui/gui_screen.cpp new file mode 100644 index 0000000000..9f4a9e6ce2 --- /dev/null +++ b/engines/sci/gui/gui_screen.cpp @@ -0,0 +1,209 @@ +/* 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 "common/timer.h" +#include "common/util.h" + +#include "sci/sci.h" +#include "sci/engine/state.h" +#include "sci/tools.h" +#include "sci/gui/gui_screen.h" + +namespace Sci { + +SciGUIscreen::SciGUIscreen(OSystem *system, EngineState *state) + : _system(system), _s(state) { + init(); +} + +SciGUIscreen::~SciGUIscreen() { +} + +void SciGUIscreen::init() { + int i; + uint16 base = 0; + + _width = 320; + _height = 200; + _pixels = _width * _height; + + // if you want to do scaling, adjust Put_Pixel() accordingly + _displayWidth = 320; + _displayHeight = 200; + _displayPixels = _displayWidth * _displayHeight; + _bytesPerDisplayPixel = 1; + + _visualScreen = initScreen(_pixels); + _priorityScreen = initScreen(_pixels); + _controlScreen = initScreen(_pixels); + _displayScreen = initScreen(_displayPixels); + + for (i = 0; i < _height; i++) { + _baseTable[i] = base; _baseDisplayTable[i] = base; + base += _width; + } +} + +byte *SciGUIscreen::initScreen(uint16 pixelCount) { + byte *screen = (byte *)malloc(pixelCount); + memset(screen, 0, pixelCount); + return screen; +} + +void SciGUIscreen::UpdateWhole() { + _system->copyRectToScreen(_displayScreen, _displayWidth, 0, 0, _displayWidth, _displayHeight); + _system->updateScreen(); +} + +byte SciGUIscreen::GetDrawingMask(byte color, byte prio, byte control) { + byte flag = 0; + if (color != 255) + flag |= SCI_SCREEN_MASK_VISUAL; + if (prio != 255) + flag |= SCI_SCREEN_MASK_PRIORITY; + if (control != 255) + flag |= SCI_SCREEN_MASK_CONTROL; + return flag; +} + +void SciGUIscreen::Put_Pixel(int x, int y, byte drawMask, byte color, byte priority, byte control) { + int offset = _baseTable[y] + x; + + if (drawMask & SCI_SCREEN_MASK_VISUAL) { + if (!_s->resMan->isVGA()) { + // EGA output (16 colors, dithered) + color = ((x^y) & 1) ? color >> 4 : color & 0x0F; + } + *(_visualScreen + offset) = color; + _displayScreen[_baseDisplayTable[y] + x] = color; + } + if (drawMask & SCI_SCREEN_MASK_PRIORITY) + *(_priorityScreen + offset) = priority; + if (drawMask & SCI_SCREEN_MASK_CONTROL) + *(_controlScreen + offset) = control; +} + +byte SciGUIscreen::Get_Visual(int x, int y) { + return _visualScreen[_baseTable[y] + x]; +} + +byte SciGUIscreen::Get_Priority(int x, int y) { + return _priorityScreen[_baseTable[y] + x]; +} + +byte SciGUIscreen::Get_Control(int x, int y) { + return _controlScreen[_baseTable[y] + x]; +} + +byte SciGUIscreen::IsFillMatch(int16 x, int16 y, byte flag, byte t_color, byte t_pri, byte t_con) { + int offset = _baseTable[y] + x; + byte match = 0; + + if (flag & SCI_SCREEN_MASK_VISUAL && *(_visualScreen + offset) == t_color) + match |= SCI_SCREEN_MASK_VISUAL; + if (flag & SCI_SCREEN_MASK_PRIORITY && *(_priorityScreen + offset) == t_pri) + match |= SCI_SCREEN_MASK_PRIORITY; + if (flag & SCI_SCREEN_MASK_CONTROL && *(_controlScreen + offset) == t_con) + match |= SCI_SCREEN_MASK_CONTROL; + return match; +} + +int SciGUIscreen::BitsGetDataSize(Common::Rect rect, byte mask) { + int byteCount = sizeof(rect) + sizeof(mask); + int pixels = rect.width() * rect.height(); + if (mask & SCI_SCREEN_MASK_VISUAL) { + byteCount += pixels + (pixels * _bytesPerDisplayPixel); + } + if (mask & SCI_SCREEN_MASK_PRIORITY) { + byteCount += pixels; + } + if (mask & SCI_SCREEN_MASK_CONTROL) { + byteCount += pixels; + } + return byteCount; +} + +void SciGUIscreen::BitsSave(Common::Rect rect, byte mask, byte *memoryPtr) { + memcpy(memoryPtr, (void *)&rect, sizeof(rect)); memoryPtr += sizeof(rect); + memcpy(memoryPtr, (void *)&mask, sizeof(mask)); memoryPtr += sizeof(mask); + + if (mask & SCI_SCREEN_MASK_VISUAL) { + BitsSaveScreen(rect, _visualScreen, memoryPtr); + BitsSaveScreen(rect, _displayScreen, memoryPtr); + } + if (mask & SCI_SCREEN_MASK_PRIORITY) { + BitsSaveScreen(rect, _priorityScreen, memoryPtr); + } + if (mask & SCI_SCREEN_MASK_CONTROL) { + BitsSaveScreen(rect, _controlScreen, memoryPtr); + } +} + +void SciGUIscreen::BitsSaveScreen(Common::Rect rect, byte *screen, byte *&memoryPtr) { + int width = rect.width(); + int height = rect.height(); + int y; + + screen += (rect.top * _width) + rect.left; + + for (y=rect.top; y<rect.bottom; y++) { + memcpy(memoryPtr, (void*)screen, width); memoryPtr += width; + screen += _width; + } +} + +void SciGUIscreen::BitsRestore(byte *memoryPtr) { + Common::Rect rect; + byte mask; + + memcpy((void *)&rect, memoryPtr, sizeof(rect)); memoryPtr += sizeof(rect); + memcpy((void *)&mask, memoryPtr, sizeof(mask)); memoryPtr += sizeof(mask); + + if (mask & SCI_SCREEN_MASK_VISUAL) { + BitsRestoreScreen(rect, memoryPtr, _visualScreen); + BitsRestoreScreen(rect, memoryPtr, _displayScreen); + } + if (mask & SCI_SCREEN_MASK_PRIORITY) { + BitsRestoreScreen(rect, memoryPtr, _priorityScreen); + } + if (mask & SCI_SCREEN_MASK_CONTROL) { + BitsRestoreScreen(rect, memoryPtr, _controlScreen); + } +} + +void SciGUIscreen::BitsRestoreScreen(Common::Rect rect, byte *&memoryPtr, byte *screen) { + int width = rect.width(); + int height = rect.height(); + int y; + + screen += (rect.top * _width) + rect.left; + + for (y=rect.top; y<rect.bottom; y++) { + memcpy((void*) screen, memoryPtr, width); memoryPtr += width; + screen += _width; + } +} + +} // end of namespace Sci |