/engines/neverhood/screen.cpp
C++ | 422 lines | 321 code | 79 blank | 22 comment | 75 complexity | 86b3f86676c4f96fa199181b1ed684d8 MD5 | raw file
Possible License(s): GPL-3.0, LGPL-2.1, GPL-2.0
- /* 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 "graphics/palette.h"
- #include "video/smk_decoder.h"
- #include "neverhood/screen.h"
- namespace Neverhood {
- Screen::Screen(NeverhoodEngine *vm)
- : _vm(vm), _paletteData(NULL), _paletteChanged(false), _smackerDecoder(NULL),
- _yOffset(0), _fullRefresh(false), _frameDelay(0), _savedSmackerDecoder(NULL),
- _savedFrameDelay(0), _savedYOffset(0) {
- _ticks = _vm->_system->getMillis();
- _backScreen = new Graphics::Surface();
- _backScreen->create(640, 480, Graphics::PixelFormat::createFormatCLUT8());
- _renderQueue = new RenderQueue();
- _prevRenderQueue = new RenderQueue();
- _microTiles = new MicroTileArray(640, 480);
- }
- Screen::~Screen() {
- delete _microTiles;
- delete _renderQueue;
- delete _prevRenderQueue;
- _backScreen->free();
- delete _backScreen;
- }
- void Screen::update() {
- _ticks = _vm->_system->getMillis();
- updatePalette();
- if (_fullRefresh) {
- // NOTE When playing a fullscreen/doubled Smacker video usually a full screen refresh is needed
- _vm->_system->copyRectToScreen((const byte*)_backScreen->getPixels(), _backScreen->pitch, 0, 0, 640, 480);
- _fullRefresh = false;
- return;
- }
- _microTiles->clear();
- for (RenderQueue::iterator it = _renderQueue->begin(); it != _renderQueue->end(); ++it) {
- RenderItem &renderItem = (*it);
- renderItem._refresh = true;
- for (RenderQueue::iterator jt = _prevRenderQueue->begin(); jt != _prevRenderQueue->end(); ++jt) {
- RenderItem &prevRenderItem = (*jt);
- if (prevRenderItem == renderItem) {
- prevRenderItem._refresh = false;
- renderItem._refresh = false;
- }
- }
- }
- for (RenderQueue::iterator jt = _prevRenderQueue->begin(); jt != _prevRenderQueue->end(); ++jt) {
- RenderItem &prevRenderItem = (*jt);
- if (prevRenderItem._refresh)
- _microTiles->addRect(Common::Rect(prevRenderItem._destX, prevRenderItem._destY, prevRenderItem._destX + prevRenderItem._width, prevRenderItem._destY + prevRenderItem._height));
- }
- for (RenderQueue::iterator it = _renderQueue->begin(); it != _renderQueue->end(); ++it) {
- RenderItem &renderItem = (*it);
- if (renderItem._refresh)
- _microTiles->addRect(Common::Rect(renderItem._destX, renderItem._destY, renderItem._destX + renderItem._width, renderItem._destY + renderItem._height));
- renderItem._refresh = true;
- }
- RectangleList *updateRects = _microTiles->getRectangles();
- for (RenderQueue::iterator it = _renderQueue->begin(); it != _renderQueue->end(); ++it) {
- RenderItem &renderItem = (*it);
- for (RectangleList::iterator ri = updateRects->begin(); ri != updateRects->end(); ++ri)
- blitRenderItem(renderItem, *ri);
- }
- SWAP(_renderQueue, _prevRenderQueue);
- _renderQueue->clear();
- for (RectangleList::iterator ri = updateRects->begin(); ri != updateRects->end(); ++ri) {
- Common::Rect &r = *ri;
- _vm->_system->copyRectToScreen((const byte*)_backScreen->getBasePtr(r.left, r.top), _backScreen->pitch, r.left, r.top, r.width(), r.height());
- }
- delete updateRects;
- }
- uint32 Screen::getNextFrameTime() {
- int32 frameDelay = _frameDelay;
- if (_smackerDecoder && _smackerDecoder->isVideoLoaded() && !_smackerDecoder->endOfVideo())
- frameDelay = _smackerDecoder->getTimeToNextFrame();
- int32 waitTicks = frameDelay - (_vm->_system->getMillis() - _ticks);
- return _vm->_system->getMillis() + waitTicks;
- }
- void Screen::saveParams() {
- _savedSmackerDecoder = _smackerDecoder;
- _savedFrameDelay = _frameDelay;
- _savedYOffset = _yOffset;
- }
- void Screen::restoreParams() {
- _smackerDecoder = _savedSmackerDecoder;
- _frameDelay = _savedFrameDelay;
- _yOffset = _savedYOffset;
- }
- void Screen::setFps(int fps) {
- _frameDelay = 1000 / fps;
- }
- int Screen::getFps() {
- return 1000 / _frameDelay;
- }
- void Screen::setYOffset(int16 yOffset) {
- _yOffset = yOffset;
- }
- int16 Screen::getYOffset() {
- return _yOffset;
- }
- void Screen::setPaletteData(byte *paletteData) {
- _paletteChanged = true;
- _paletteData = paletteData;
- }
- void Screen::unsetPaletteData(byte *paletteData) {
- if (_paletteData == paletteData) {
- _paletteChanged = false;
- _paletteData = NULL;
- }
- }
- void Screen::testPalette(byte *paletteData) {
- if (_paletteData == paletteData)
- _paletteChanged = true;
- }
- void Screen::updatePalette() {
- if (_paletteChanged && _paletteData) {
- byte *tempPalette = new byte[768];
- for (int i = 0; i < 256; i++) {
- tempPalette[i * 3 + 0] = _paletteData[i * 4 + 0];
- tempPalette[i * 3 + 1] = _paletteData[i * 4 + 1];
- tempPalette[i * 3 + 2] = _paletteData[i * 4 + 2];
- }
- _vm->_system->getPaletteManager()->setPalette(tempPalette, 0, 256);
- delete[] tempPalette;
- _paletteChanged = false;
- }
- }
- void Screen::clear() {
- memset(_backScreen->getPixels(), 0, _backScreen->pitch * _backScreen->h);
- _fullRefresh = true;
- clearRenderQueue();
- }
- void Screen::clearRenderQueue() {
- _renderQueue->clear();
- _prevRenderQueue->clear();
- }
- void Screen::drawSurface2(const Graphics::Surface *surface, NDrawRect &drawRect, NRect &clipRect, bool transparent, byte version,
- const Graphics::Surface *shadowSurface) {
- int16 destX, destY;
- NRect ddRect;
- if (drawRect.x + drawRect.width >= clipRect.x2)
- ddRect.x2 = clipRect.x2 - drawRect.x;
- else
- ddRect.x2 = drawRect.width;
- if (drawRect.x < clipRect.x1) {
- destX = clipRect.x1;
- ddRect.x1 = clipRect.x1 - drawRect.x;
- } else {
- destX = drawRect.x;
- ddRect.x1 = 0;
- }
- if (drawRect.y + drawRect.height >= clipRect.y2)
- ddRect.y2 = clipRect.y2 - drawRect.y;
- else
- ddRect.y2 = drawRect.height;
- if (drawRect.y < clipRect.y1) {
- destY = clipRect.y1;
- ddRect.y1 = clipRect.y1 - drawRect.y;
- } else {
- destY = drawRect.y;
- ddRect.y1 = 0;
- }
- queueBlit(surface, destX, destY, ddRect, transparent, version, shadowSurface);
- }
- void Screen::drawSurface3(const Graphics::Surface *surface, int16 x, int16 y, NDrawRect &drawRect, NRect &clipRect, bool transparent, byte version) {
- int16 destX, destY;
- NRect ddRect;
- if (x + drawRect.width >= clipRect.x2)
- ddRect.x2 = clipRect.x2 - drawRect.x - x;
- else
- ddRect.x2 = drawRect.x + drawRect.width;
- if (x < clipRect.x1) {
- destX = clipRect.x1;
- ddRect.x1 = clipRect.x1 + drawRect.x - x;
- } else {
- destX = x;
- ddRect.x1 = drawRect.x;
- }
- if (y + drawRect.height >= clipRect.y2)
- ddRect.y2 = clipRect.y2 + drawRect.y - y;
- else
- ddRect.y2 = drawRect.y + drawRect.height;
- if (y < clipRect.y1) {
- destY = clipRect.y1;
- ddRect.y1 = clipRect.y1 + drawRect.y - y;
- } else {
- destY = y;
- ddRect.y1 = drawRect.y;
- }
- queueBlit(surface, destX, destY, ddRect, transparent, version);
- }
- void Screen::drawDoubleSurface2(const Graphics::Surface *surface, NDrawRect &drawRect) {
- const byte *source = (const byte*)surface->getPixels();
- byte *dest = (byte*)_backScreen->getBasePtr(drawRect.x, drawRect.y);
- for (int16 yc = 0; yc < surface->h; yc++) {
- byte *row = dest;
- for (int16 xc = 0; xc < surface->w; xc++) {
- *row++ = *source;
- *row++ = *source++;
- }
- memcpy(dest + _backScreen->pitch, dest, surface->w * 2);
- dest += _backScreen->pitch;
- dest += _backScreen->pitch;
- }
- _fullRefresh = true; // See Screen::update
- }
- void Screen::drawUnk(const Graphics::Surface *surface, NDrawRect &drawRect, NDrawRect &sysRect, NRect &clipRect, bool transparent, byte version) {
- int16 x, y;
- bool xflag, yflag;
- NDrawRect newDrawRect;
- x = sysRect.x;
- if (sysRect.width <= x || -sysRect.width >= x)
- x = x % sysRect.width;
- if (x < 0)
- x += sysRect.width;
- y = sysRect.y;
- if (y >= sysRect.height || -sysRect.height >= y)
- y = y % sysRect.height;
- if (y < 0)
- y += sysRect.height;
- xflag = x <= 0;
- yflag = y <= 0;
- newDrawRect.x = x;
- newDrawRect.width = sysRect.width - x;
- if (drawRect.width < newDrawRect.width) {
- xflag = true;
- newDrawRect.width = drawRect.width;
- }
- newDrawRect.y = y;
- newDrawRect.height = sysRect.height - y;
- if (drawRect.height < newDrawRect.height) {
- yflag = true;
- newDrawRect.height = drawRect.height;
- }
- drawSurface3(surface, drawRect.x, drawRect.y, newDrawRect, clipRect, transparent, version);
- if (!xflag) {
- newDrawRect.x = 0;
- newDrawRect.y = y;
- newDrawRect.width = x + drawRect.width - sysRect.width;
- newDrawRect.height = sysRect.height - y;
- if (drawRect.height < newDrawRect.height)
- newDrawRect.height = drawRect.height;
- drawSurface3(surface, sysRect.width + drawRect.x - x, drawRect.y, newDrawRect, clipRect, transparent, version);
- }
- if (!yflag) {
- newDrawRect.x = x;
- newDrawRect.y = 0;
- newDrawRect.width = sysRect.width - x;
- newDrawRect.height = y + drawRect.height - sysRect.height;
- if (drawRect.width < newDrawRect.width)
- newDrawRect.width = drawRect.width;
- drawSurface3(surface, drawRect.x, sysRect.height + drawRect.y - y, newDrawRect, clipRect, transparent, version);
- }
- if (!xflag && !yflag) {
- newDrawRect.x = 0;
- newDrawRect.y = 0;
- newDrawRect.width = x + drawRect.width - sysRect.width;
- newDrawRect.height = y + drawRect.height - sysRect.height;
- drawSurface3(surface, sysRect.width + drawRect.x - x, sysRect.height + drawRect.y - y, newDrawRect, clipRect, transparent, version);
- }
- }
- void Screen::drawSurfaceClipRects(const Graphics::Surface *surface, NDrawRect &drawRect, NRect *clipRects, uint clipRectsCount, bool transparent, byte version) {
- NDrawRect clipDrawRect(0, 0, drawRect.width, drawRect.height);
- for (uint i = 0; i < clipRectsCount; i++)
- drawSurface3(surface, drawRect.x, drawRect.y, clipDrawRect, clipRects[i], transparent, version);
- }
- void Screen::queueBlit(const Graphics::Surface *surface, int16 destX, int16 destY, NRect &ddRect, bool transparent, byte version,
- const Graphics::Surface *shadowSurface) {
- const int width = ddRect.x2 - ddRect.x1;
- const int height = ddRect.y2 - ddRect.y1;
- if (width <= 0 || height <= 0)
- return;
- RenderItem renderItem;
- renderItem._surface = surface;
- renderItem._shadowSurface = shadowSurface;
- renderItem._destX = destX;
- renderItem._destY = destY;
- renderItem._srcX = ddRect.x1;
- renderItem._srcY = ddRect.y1;
- renderItem._width = width;
- renderItem._height = height;
- renderItem._transparent = transparent;
- renderItem._version = version;
- _renderQueue->push_back(renderItem);
- }
- void Screen::blitRenderItem(const RenderItem &renderItem, const Common::Rect &clipRect) {
- const Graphics::Surface *surface = renderItem._surface;
- const Graphics::Surface *shadowSurface = renderItem._shadowSurface;
- const int16 x0 = MAX<int16>(clipRect.left, renderItem._destX);
- const int16 y0 = MAX<int16>(clipRect.top, renderItem._destY);
- const int16 x1 = MIN<int16>(clipRect.right, renderItem._destX + renderItem._width);
- const int16 y1 = MIN<int16>(clipRect.bottom, renderItem._destY + renderItem._height);
- const int16 width = x1 - x0;
- int16 height = y1 - y0;
- if (width < 0 || height < 0)
- return;
- const byte *source = (const byte*)surface->getBasePtr(renderItem._srcX + x0 - renderItem._destX, renderItem._srcY + y0 - renderItem._destY);
- byte *dest = (byte*)_backScreen->getBasePtr(x0, y0);
- if (shadowSurface) {
- const byte *shadowSource = (const byte*)shadowSurface->getBasePtr(x0, y0);
- while (height--) {
- for (int xc = 0; xc < width; xc++)
- if (source[xc] != 0)
- dest[xc] = shadowSource[xc];
- source += surface->pitch;
- shadowSource += shadowSurface->pitch;
- dest += _backScreen->pitch;
- }
- } else if (!renderItem._transparent) {
- while (height--) {
- memcpy(dest, source, width);
- source += surface->pitch;
- dest += _backScreen->pitch;
- }
- } else {
- while (height--) {
- for (int xc = 0; xc < width; xc++)
- if (source[xc] != 0)
- dest[xc] = source[xc];
- source += surface->pitch;
- dest += _backScreen->pitch;
- }
- }
- }
- } // End of namespace Neverhood