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Diffstat (limited to 'engines/neverhood/screen.cpp')
| -rw-r--r-- | engines/neverhood/screen.cpp | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/engines/neverhood/screen.cpp b/engines/neverhood/screen.cpp new file mode 100644 index 0000000000..5a748cfab4 --- /dev/null +++ b/engines/neverhood/screen.cpp @@ -0,0 +1,420 @@ +/* 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 "neverhood/screen.h" + +namespace Neverhood { + +Screen::Screen(NeverhoodEngine *vm) + : _vm(vm), _paletteData(NULL), _paletteChanged(false), _smackerDecoder(NULL), + _yOffset(0), _fullRefresh(false) { + + _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->pixels, _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->pixels, 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->getBasePtr(0, 0); + 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 |