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Diffstat (limited to 'engines/pegasus/elements.cpp')
| -rw-r--r-- | engines/pegasus/elements.cpp | 568 |
1 files changed, 568 insertions, 0 deletions
diff --git a/engines/pegasus/elements.cpp b/engines/pegasus/elements.cpp new file mode 100644 index 0000000000..c84d555444 --- /dev/null +++ b/engines/pegasus/elements.cpp @@ -0,0 +1,568 @@ +/* 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. + * + * Additional copyright for this file: + * Copyright (C) 1995-1997 Presto Studios, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "common/macresman.h" +#include "common/stream.h" + +#include "pegasus/elements.h" +#include "pegasus/graphics.h" +#include "pegasus/surface.h" + +namespace Pegasus { + +DisplayElement::DisplayElement(const DisplayElementID id) : IDObject(id) { + _elementIsDisplaying = false; + _elementIsVisible = false; + _elementOrder = 0; + _triggeredElement = this; + _nextElement = 0; +} + +DisplayElement::~DisplayElement() { + if (isDisplaying()) + ((PegasusEngine *)g_engine)->_gfx->removeDisplayElement(this); +} + +void DisplayElement::setDisplayOrder(const DisplayOrder order) { + if (_elementOrder != order) { + _elementOrder = order; + if (isDisplaying()) { + ((PegasusEngine *)g_engine)->_gfx->removeDisplayElement(this); + ((PegasusEngine *)g_engine)->_gfx->addDisplayElement(this); + triggerRedraw(); + } + } +} + +void DisplayElement::startDisplaying() { + if (!isDisplaying()) { + ((PegasusEngine *)g_engine)->_gfx->addDisplayElement(this); + triggerRedraw(); + } +} + +void DisplayElement::stopDisplaying() { + if (isDisplaying()) { + triggerRedraw(); + ((PegasusEngine *)g_engine)->_gfx->removeDisplayElement(this); + } +} + +void DisplayElement::setBounds(const CoordType left, const CoordType top, const CoordType right, const CoordType bottom) { + setBounds(Common::Rect(left, top, right, bottom)); +} + +void DisplayElement::getBounds(Common::Rect &r) const { + r = _bounds; +} + +void DisplayElement::sizeElement(const CoordType h, const CoordType v) { + Common::Rect newBounds = _bounds; + newBounds.right = _bounds.left + h; + newBounds.bottom = _bounds.top + v; + setBounds(newBounds); +} + +void DisplayElement::moveElementTo(const CoordType h, const CoordType v) { + Common::Rect newBounds = _bounds; + newBounds.moveTo(h, v); + setBounds(newBounds); +} + +void DisplayElement::moveElement(const CoordType dh, const CoordType dv) { + Common::Rect newBounds = _bounds; + newBounds.translate(dh, dv); + setBounds(newBounds); +} + +void DisplayElement::getLocation(CoordType &h, CoordType &v) const { + h = _bounds.left; + v = _bounds.top; +} + +void DisplayElement::centerElementAt(const CoordType h, const CoordType v) { + Common::Rect newBounds = _bounds; + newBounds.moveTo(h - (_bounds.width() / 2), v - (_bounds.height() / 2)); + setBounds(newBounds); +} + +void DisplayElement::getCenter(CoordType &h, CoordType &v) const { + h = (_bounds.left + _bounds.right) / 2; + v = (_bounds.top + _bounds.bottom) / 2; +} + +void DisplayElement::setBounds(const Common::Rect &r) { + if (r != _bounds) { + triggerRedraw(); + _bounds = r; + triggerRedraw(); + } +} + +void DisplayElement::hide() { + if (_elementIsVisible) { + triggerRedraw(); + _elementIsVisible = false; + } +} + +void DisplayElement::show() { + if (!_elementIsVisible) { + _elementIsVisible = true; + triggerRedraw(); + } +} + +// Only invalidates this element's bounding rectangle if all these conditions are true: +// -- The triggered element is this element. +// -- The element is displaying on the display list. +// -- The element is visible. +// -- The element is part of the active layer OR is one of the reserved items. +void DisplayElement::triggerRedraw() { + GraphicsManager *gfx = ((PegasusEngine *)g_engine)->_gfx; + + if (_triggeredElement == this) { + if (validToDraw(gfx->getBackOfActiveLayer(), gfx->getFrontOfActiveLayer())) + gfx->invalRect(_bounds); + } else { + _triggeredElement->triggerRedraw(); + } +} + +void DisplayElement::setTriggeredElement(DisplayElement *element) { + if (element) + _triggeredElement = element; + else + _triggeredElement = this; +} + +bool DisplayElement::validToDraw(DisplayOrder backLayer, DisplayOrder frontLayer) { + return isDisplaying() && _elementIsVisible && + (getObjectID() <= kHighestReservedElementID || + (getDisplayOrder() >= backLayer && + getDisplayOrder() <= frontLayer)); +} + +DropHighlight::DropHighlight(const DisplayElementID id) : DisplayElement(id) { + _highlightColor = 0; + _thickness = 2; + _cornerDiameter = 0; +} + +void DropHighlight::draw(const Common::Rect &) { + Graphics::Surface *screen = ((PegasusEngine *)g_engine)->_gfx->getWorkArea(); + + // Since this is only used in two different ways, I'm only + // going to implement it in those two ways. Deal with it. + + Common::Rect rect = _bounds; + rect.grow(-_thickness); + screen->frameRect(rect, _highlightColor); + rect.grow(1); + screen->frameRect(rect, _highlightColor); + + if (_cornerDiameter == 8 && _thickness == 4) { + rect.grow(1); + screen->frameRect(rect, _highlightColor); + screen->hLine(rect.left + 1, rect.top - 1, rect.right - 2, _highlightColor); + screen->hLine(rect.left + 1, rect.bottom, rect.right - 2, _highlightColor); + screen->vLine(rect.left - 1, rect.top + 1, rect.bottom - 2, _highlightColor); + screen->vLine(rect.right, rect.top + 1, rect.bottom - 2, _highlightColor); + } +} + +IdlerAnimation::IdlerAnimation(const DisplayElementID id) : Animation(id) { + _lastTime = 0xffffffff; +} + +void IdlerAnimation::startDisplaying() { + if (!isDisplaying()) { + Animation::startDisplaying(); + startIdling(); + } +} + +void IdlerAnimation::stopDisplaying() { + if (isDisplaying()) { + Animation::stopDisplaying(); + stopIdling(); + } +} + +void IdlerAnimation::useIdleTime() { + uint32 currentTime = getTime(); + + if (currentTime != _lastTime) { + _lastTime = currentTime; + timeChanged(_lastTime); + } +} + +void IdlerAnimation::timeChanged(const TimeValue) { + triggerRedraw(); +} + +FrameSequence::FrameSequence(const DisplayElementID id) : IdlerAnimation(id) { + _duration = 0; + _currentFrameNum = 0; + _resFork = new Common::MacResManager(); + _numFrames = 0; +} + +FrameSequence::~FrameSequence() { + delete _resFork; +} + +void FrameSequence::useFileName(const Common::String &fileName) { + _resFork->open(fileName); +} + +void FrameSequence::openFrameSequence() { + if (!_resFork->hasResFork()) + return; + + Common::SeekableReadStream *res = _resFork->getResource(MKTAG('P', 'F', 'r', 'm'), 0x80); + + if (!res) + return; + + uint32 scale = res->readUint32BE(); + _bounds.top = res->readUint16BE(); + _bounds.left = res->readUint16BE(); + _bounds.bottom = res->readUint16BE(); + _bounds.right = res->readUint16BE(); + _numFrames = res->readUint16BE(); + _duration = 0; + + _frameTimes.clear(); + for (uint32 i = 0; i < _numFrames; i++) { + TimeValue time = res->readUint32BE(); + _duration += time; + _frameTimes.push_back(_duration); + } + + setScale(scale); + setSegment(0, _duration); + setTime(0); + _currentFrameNum = 0; + newFrame(_currentFrameNum); + triggerRedraw(); + + delete res; +} + +void FrameSequence::closeFrameSequence() { + stop(); + _resFork->close(); + _duration = 0; + _numFrames = 0; + _frameTimes.clear(); +} + +void FrameSequence::timeChanged(const TimeValue time) { + int16 frameNum = 0; + for (int16 i = _numFrames - 1; i >= 0; i--) { + if (_frameTimes[i] < time) { + frameNum = i; + break; + } + } + + if (frameNum != _currentFrameNum) { + _currentFrameNum = frameNum; + newFrame(_currentFrameNum); + triggerRedraw(); + } +} + +void FrameSequence::setFrameNum(const int16 frameNum) { + int16 f = CLIP<int>(frameNum, 0, _numFrames); + + if (_currentFrameNum != f) { + _currentFrameNum = f; + setTime(_frameTimes[f]); + newFrame(f); + triggerRedraw(); + } +} + +bool FrameSequence::isSequenceOpen() const { + return _numFrames != 0; +} + +Sprite::Sprite(const DisplayElementID id) : DisplayElement(id) { + _numFrames = 0; + _currentFrameNum = 0xffffffff; + _currentFrame = 0; +} + +Sprite::~Sprite() { + discardFrames(); +} + +void Sprite::discardFrames() { + if (!_frameArray.empty()) { + for (uint32 i = 0; i < _numFrames; i++) { + SpriteFrame *frame = _frameArray[i].frame; + frame->_referenceCount--; + if (frame->_referenceCount == 0) + delete frame; + } + + _frameArray.clear(); + _numFrames = 0; + _currentFrame = 0; + _currentFrameNum = 0xffffffff; + setBounds(0, 0, 0, 0); + } +} + +void Sprite::addPICTResourceFrame(const ResIDType pictID, bool transparent, const CoordType left, const CoordType top) { + SpriteFrame *frame = new SpriteFrame(); + frame->initFromPICTResource(((PegasusEngine *)g_engine)->_resFork, pictID, transparent); + addFrame(frame, left, top); +} + +uint32 Sprite::addFrame(SpriteFrame *frame, const CoordType left, const CoordType top) { + SpriteFrameRec frameRecord; + frameRecord.frame = frame; + frameRecord.frameLeft = left; + frameRecord.frameTop = top; + _frameArray.push_back(frameRecord); + _numFrames++; + frame->_referenceCount++; + + Common::Rect frameBounds; + frame->getSurfaceBounds(frameBounds); + + // 9/3/96 + // BB Should this be + left or - left? + frameBounds.moveTo(_bounds.left + left, _bounds.top + top); + + frameBounds.extend(_bounds); + + if (_bounds != frameBounds) + setBounds(frameBounds); + + return _numFrames - 1; +} + +void Sprite::removeFrame(const uint32 frameNum) { + _frameArray[frameNum].frame->_referenceCount--; + if (_frameArray[frameNum].frame->_referenceCount == 0) + delete _frameArray[frameNum].frame; + + // Calculate the new bounds + Common::Rect frameBounds; + for (uint32 i = 0; i < _numFrames; i++) { + if (i == frameNum) + continue; + + Common::Rect r; + _frameArray[i].frame->getSurfaceBounds(r); + r.translate(_frameArray[i].frameLeft, _frameArray[i].frameTop); + frameBounds.extend(r); + } + + _frameArray.remove_at(frameNum); + + frameBounds.moveTo(_bounds.left, _bounds.top); + setBounds(frameBounds); + + if (_currentFrameNum == frameNum) + triggerRedraw(); + else if (_currentFrameNum != 0xffffffff && _currentFrameNum > frameNum) + --_currentFrameNum; +} + +void Sprite::setCurrentFrameIndex(const int32 frameNum) { + if (frameNum < 0) { + if (_currentFrameNum != 0xffffffff) { + _currentFrameNum = 0xffffffff; + _currentFrame = 0; + triggerRedraw(); + } + } else if (_numFrames > 0) { + uint32 f = frameNum % _numFrames; + if (f != _currentFrameNum) { + _currentFrameNum = f; + _currentFrame = &_frameArray[f]; + triggerRedraw(); + } + } +} + +SpriteFrame *Sprite::getFrame(const int32 index) { + if (index < 0 || (uint32)index >= _numFrames) + return 0; + + return _frameArray[index].frame; +} + +void Sprite::draw(const Common::Rect &r) { + if (_currentFrame) { + Common::Rect frameBounds; + _currentFrame->frame->getSurfaceBounds(frameBounds); + + frameBounds.translate(_bounds.left + _currentFrame->frameLeft, _bounds.top + _currentFrame->frameTop); + Common::Rect r1 = frameBounds.findIntersectingRect(r); + + Common::Rect r2 = frameBounds; + r2.translate(-_bounds.left - _currentFrame->frameLeft, -_bounds.top - _currentFrame->frameTop); + + _currentFrame->frame->drawImage(r2, r1); + } +} + +SpriteSequence::SpriteSequence(const DisplayElementID id, const DisplayElementID spriteID) : + FrameSequence(id), _sprite(spriteID), _transparent(false) { +} + +void SpriteSequence::openFrameSequence() { + if (!isSequenceOpen()) { + FrameSequence::openFrameSequence(); + + if (isSequenceOpen()) { + uint32 numFrames = getNumFrames(); + + for (uint32 i = 0; i < numFrames; ++i) { + SpriteFrame *frame = new SpriteFrame(); + frame->initFromPICTResource(_resFork, i + 0x80, _transparent); + _sprite.addFrame(frame, 0, 0); + } + + _sprite.setBounds(_bounds); + } + } +} + +void SpriteSequence::closeFrameSequence() { + if (isSequenceOpen()) { + FrameSequence::closeFrameSequence(); + _sprite.discardFrames(); + } +} + +void SpriteSequence::setBounds(const Common::Rect &bounds) { + FrameSequence::setBounds(bounds); + _sprite.setBounds(_bounds); +} + +void SpriteSequence::draw(const Common::Rect &r) { + _sprite.draw(r); +} + +void SpriteSequence::newFrame(const uint16 frame) { + _sprite.setCurrentFrameIndex(frame); +} + +#define DRAW_PIXEL() \ + if (bytesPerPixel == 2) \ + *((uint16 *)dst) = black; \ + else \ + *((uint32 *)dst) = black; \ + dst += bytesPerPixel + +#define SKIP_PIXEL() \ + dst += bytesPerPixel + +void ScreenDimmer::draw(const Common::Rect &r) { + // We're going to emulate QuickDraw's srcOr+gray mode here + // In this mode, every other y column is all black (odd-columns). + // Basically, every row does three black and then one transparent + // repeatedly. + + // The output is identical to the original + + uint32 black = g_system->getScreenFormat().RGBToColor(0, 0, 0); + Graphics::Surface *screen = ((PegasusEngine *)g_engine)->_gfx->getWorkArea(); + byte bytesPerPixel = g_system->getScreenFormat().bytesPerPixel; + + // We're currently doing it to the whole screen to simplify the code + + for (int y = 0; y < 480; y++) { + byte *dst = (byte *)screen->getBasePtr(0, y); + + for (int x = 0; x < 640; x += 4) { + if (y & 1) { + DRAW_PIXEL(); + DRAW_PIXEL(); + SKIP_PIXEL(); + DRAW_PIXEL(); + } else { + SKIP_PIXEL(); + DRAW_PIXEL(); + DRAW_PIXEL(); + DRAW_PIXEL(); + } + } + } +} + +#undef DRAW_PIXEL +#undef SKIP_PIXEL + +SoundLevel::SoundLevel(const DisplayElementID id) : DisplayElement(id) { + _soundLevel = 0; +} + +void SoundLevel::incrementLevel() { + if (_soundLevel < 12) { + _soundLevel++; + triggerRedraw(); + } +} + +void SoundLevel::decrementLevel() { + if (_soundLevel > 0) { + _soundLevel--; + triggerRedraw(); + } +} + +uint16 SoundLevel::getSoundLevel() { + return CLIP<int>(_soundLevel * 22, 0, 256); +} + +void SoundLevel::setSoundLevel(uint16 level) { + uint16 newLevel = (level + 21) / 22; + + if (newLevel != _soundLevel) { + _soundLevel = newLevel; + triggerRedraw(); + } +} + +void SoundLevel::draw(const Common::Rect &r) { + Common::Rect levelRect(_bounds.right + (8 * (_soundLevel - 12)), _bounds.top, _bounds.right, _bounds.bottom); + levelRect = r.findIntersectingRect(levelRect); + + if (!levelRect.isEmpty()) { + Graphics::Surface *screen = ((PegasusEngine *)g_engine)->_gfx->getWorkArea(); + screen->fillRect(levelRect, g_system->getScreenFormat().RGBToColor(0, 0, 0)); + } +} + +} // End of namespace Pegasus |