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author | RichieSams | 2013-11-01 00:21:08 -0500 |
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committer | RichieSams | 2013-11-01 02:52:57 -0500 |
commit | 5842c5098fbd00c8ab5245ba1d6ca9c2675e3da4 (patch) | |
tree | bdb138d047faae28893bdf37758940916a091a12 /engines/zvision/scripting/controls/lever_control.cpp | |
parent | 651bf899399de2b5c2d8e62a5bb4964b037950d2 (diff) | |
download | scummvm-rg350-5842c5098fbd00c8ab5245ba1d6ca9c2675e3da4.tar.gz scummvm-rg350-5842c5098fbd00c8ab5245ba1d6ca9c2675e3da4.tar.bz2 scummvm-rg350-5842c5098fbd00c8ab5245ba1d6ca9c2675e3da4.zip |
ZVISION: Create a folder structure for ZVision source files
I personally used filters within my IDE, but since others are now joining the project,
it was brought to my attention that some better organization would be nice.
Diffstat (limited to 'engines/zvision/scripting/controls/lever_control.cpp')
-rw-r--r-- | engines/zvision/scripting/controls/lever_control.cpp | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/engines/zvision/scripting/controls/lever_control.cpp b/engines/zvision/scripting/controls/lever_control.cpp new file mode 100644 index 0000000000..557dec0a83 --- /dev/null +++ b/engines/zvision/scripting/controls/lever_control.cpp @@ -0,0 +1,402 @@ +/* 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 "common/scummsys.h" + +#include "zvision/lever_control.h" + +#include "zvision/zvision.h" +#include "zvision/script_manager.h" +#include "zvision/render_manager.h" +#include "zvision/cursor_manager.h" +#include "zvision/rlf_animation.h" +#include "zvision/zork_avi_decoder.h" +#include "zvision/utility.h" + +#include "common/stream.h" +#include "common/file.h" +#include "common/tokenizer.h" +#include "common/system.h" + +#include "graphics/surface.h" + + +namespace ZVision { + +LeverControl::LeverControl(ZVision *engine, uint32 key, Common::SeekableReadStream &stream) + : Control(engine, key), + _frameInfo(0), + _frameCount(0), + _startFrame(0), + _currentFrame(0), + _lastRenderedFrame(0), + _mouseIsCaptured(false), + _isReturning(false), + _accumulatedTime(0), + _returnRoutesCurrentFrame(0) { + + // Loop until we find the closing brace + Common::String line = stream.readLine(); + trimCommentsAndWhiteSpace(&line); + + while (!stream.eos() && !line.contains('}')) { + if (line.matchString("*descfile*", true)) { + char levFileName[25]; + sscanf(line.c_str(), "%*[^(](%25[^)])", levFileName); + + parseLevFile(levFileName); + } else if (line.matchString("*cursor*", true)) { + char cursorName[25]; + sscanf(line.c_str(), "%*[^(](%25[^)])", cursorName); + + _cursorName = Common::String(cursorName); + } + + line = stream.readLine(); + trimCommentsAndWhiteSpace(&line); + } + + renderFrame(_currentFrame); +} + +LeverControl::~LeverControl() { + if (_fileType == AVI) { + delete _animation.avi; + } else if (_fileType == RLF) { + delete _animation.rlf; + } + + delete[] _frameInfo; +} + +void LeverControl::parseLevFile(const Common::String &fileName) { + Common::File file; + if (!file.open(fileName)) { + warning("LEV file %s could could be opened", fileName.c_str()); + return; + } + + Common::String line = file.readLine(); + + while (!file.eos()) { + if (line.matchString("*animation_id*", true)) { + // Not used + } else if (line.matchString("*filename*", true)) { + char fileNameBuffer[25]; + sscanf(line.c_str(), "%*[^:]:%25[^~]~", fileNameBuffer); + + Common::String animationFileName(fileNameBuffer); + + if (animationFileName.hasSuffix(".avi")) { + _animation.avi = new ZorkAVIDecoder(); + _animation.avi->loadFile(animationFileName); + _fileType = AVI; + } else if (animationFileName.hasSuffix(".rlf")) { + _animation.rlf = new RlfAnimation(animationFileName, false); + _fileType = RLF; + } + } else if (line.matchString("*skipcolor*", true)) { + // Not used + } else if (line.matchString("*anim_coords*", true)) { + int left, top, right, bottom; + sscanf(line.c_str(), "%*[^:]:%d %d %d %d~", &left, &top, &right, &bottom); + + _animationCoords.left = left; + _animationCoords.top = top; + _animationCoords.right = right; + _animationCoords.bottom = bottom; + } else if (line.matchString("*mirrored*", true)) { + uint mirrored; + sscanf(line.c_str(), "%*[^:]:%u~", &mirrored); + + _mirrored = mirrored == 0 ? false : true; + } else if (line.matchString("*frames*", true)) { + sscanf(line.c_str(), "%*[^:]:%u~", &_frameCount); + + _frameInfo = new FrameInfo[_frameCount]; + } else if (line.matchString("*elsewhere*", true)) { + // Not used + } else if (line.matchString("*out_of_control*", true)) { + // Not used + } else if (line.matchString("*start_pos*", true)) { + sscanf(line.c_str(), "%*[^:]:%u~", &_startFrame); + _currentFrame = _startFrame; + } else if (line.matchString("*hotspot_deltas*", true)) { + uint x; + uint y; + sscanf(line.c_str(), "%*[^:]:%u %u~", &x, &y); + + _hotspotDelta.x = x; + _hotspotDelta.y = y; + } else { + uint frameNumber; + uint x, y; + + if (sscanf(line.c_str(), "%u:%u %u", &frameNumber, &x, &y) == 3) { + _frameInfo[frameNumber].hotspot.left = x; + _frameInfo[frameNumber].hotspot.top = y; + _frameInfo[frameNumber].hotspot.right = x + _hotspotDelta.x; + _frameInfo[frameNumber].hotspot.bottom = y + _hotspotDelta.y; + } + + Common::StringTokenizer tokenizer(line, " ^=()"); + tokenizer.nextToken(); + tokenizer.nextToken(); + + Common::String token = tokenizer.nextToken(); + while (!tokenizer.empty()) { + if (token == "D") { + token = tokenizer.nextToken(); + + uint angle; + uint toFrame; + sscanf(token.c_str(), "%u,%u", &toFrame, &angle); + + _frameInfo[frameNumber].directions.push_back(Direction(angle, toFrame)); + } else if (token.hasPrefix("P")) { + // Format: P(<from> to <to>) + tokenizer.nextToken(); + tokenizer.nextToken(); + token = tokenizer.nextToken(); + uint to = atoi(token.c_str()); + + _frameInfo[frameNumber].returnRoute.push_back(to); + } + + token = tokenizer.nextToken(); + } + } + + line = file.readLine(); + } +} + +void LeverControl::onMouseDown(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos) { + if (!_enabled) { + return; + } + + if (_frameInfo[_currentFrame].hotspot.contains(backgroundImageSpacePos)) { + _mouseIsCaptured = true; + _lastMousePos = backgroundImageSpacePos; + } +} + +void LeverControl::onMouseUp(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos) { + if (!_enabled) { + return; + } + + if (_mouseIsCaptured) { + _mouseIsCaptured = false; + _engine->getScriptManager()->setStateValue(_key, _currentFrame); + + _isReturning = true; + _returnRoutesCurrentProgress = _frameInfo[_currentFrame].returnRoute.begin(); + _returnRoutesCurrentFrame = _currentFrame; + } +} + +bool LeverControl::onMouseMove(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos) { + if (!_enabled) { + return false; + } + + bool cursorWasChanged = false; + + if (_mouseIsCaptured) { + // Make sure the square distance between the last point and the current point is greater than 64 + // This is a heuristic. This determines how responsive the lever is to mouse movement. + // TODO: Fiddle with the heuristic to get a good lever responsiveness 'feel' + if (_lastMousePos.sqrDist(backgroundImageSpacePos) >= 64) { + int angle = calculateVectorAngle(_lastMousePos, backgroundImageSpacePos); + _lastMousePos = backgroundImageSpacePos; + + for (Common::List<Direction>::iterator iter = _frameInfo[_currentFrame].directions.begin(); iter != _frameInfo[_currentFrame].directions.end(); ++iter) { + if (angle >= (int)iter->angle - ANGLE_DELTA && angle <= (int)iter->angle + ANGLE_DELTA) { + _currentFrame = iter->toFrame; + renderFrame(_currentFrame); + break; + } + } + } + } else if (_frameInfo[_currentFrame].hotspot.contains(backgroundImageSpacePos)) { + _engine->getCursorManager()->changeCursor(_cursorName); + cursorWasChanged = true; + } + + return cursorWasChanged; +} + +bool LeverControl::process(uint32 deltaTimeInMillis) { + if (!_enabled) { + return false; + } + + if (_isReturning) { + _accumulatedTime += deltaTimeInMillis; + while (_accumulatedTime >= ANIMATION_FRAME_TIME) { + _accumulatedTime -= ANIMATION_FRAME_TIME; + if (_returnRoutesCurrentFrame == *_returnRoutesCurrentProgress) { + _returnRoutesCurrentProgress++; + } + if (_returnRoutesCurrentProgress == _frameInfo[_currentFrame].returnRoute.end()) { + _isReturning = false; + _currentFrame = _returnRoutesCurrentFrame; + return false; + } + + uint toFrame = *_returnRoutesCurrentProgress; + if (_returnRoutesCurrentFrame < toFrame) { + _returnRoutesCurrentFrame++; + } else if (_returnRoutesCurrentFrame > toFrame) { + _returnRoutesCurrentFrame--; + } + + _engine->getScriptManager()->setStateValue(_key, _returnRoutesCurrentFrame); + renderFrame(_returnRoutesCurrentFrame); + } + } + + return false; +} + +int LeverControl::calculateVectorAngle(const Common::Point &pointOne, const Common::Point &pointTwo) { + // Check for the easy angles first + if (pointOne.x == pointTwo.x && pointOne.y == pointTwo.y) + return -1; // This should never happen + else if (pointOne.x == pointTwo.x) { + if (pointTwo.y < pointOne.y) + return 90; + else + return 270; + } else if (pointOne.y == pointTwo.y) { + if (pointTwo.x > pointOne.x) + return 0; + else + return 180; + } else { + // Calculate the angle with trig + int16 xDist = pointTwo.x - pointOne.x; + int16 yDist = pointTwo.y - pointOne.y; + + // Calculate the angle using arctan + // Then convert to degrees. (180 / 3.14159 = 57.2958) + int angle = int(atan((float)yDist / (float)xDist) * 57); + + // Calculate what quadrant pointTwo is in + uint quadrant = ((yDist > 0 ? 1 : 0) << 1) | (xDist < 0 ? 1 : 0); + + // Explanation of quadrants: + // + // yDist > 0 | xDist < 0 | Quadrant number + // 0 | 0 | 0 + // 0 | 1 | 1 + // 1 | 0 | 2 + // 1 | 1 | 3 + // + // Note: I know this doesn't line up with traditional mathematical quadrants + // but doing it this way allows you can use a switch and is a bit cleaner IMO. + // + // The graph below shows the 4 quadrants pointTwo can end up in as well + // as what the angle as calculated above refers to. + // Note: The calculated angle in quadrants 0 and 3 is negative + // due to arctan(-x) = -theta + // + // Origin => (pointOne.x, pointOne.y) + // * => (pointTwo.x, pointTwo.y) + // + // 90 | + // ^ | + // * | * | + // \ | / | + // \ | / | + // \ | / | + // Quadrant 1 \ | / Quadrant 0 | + // \ | / | + // \ | / | + // angle ( \|/ ) -angle | + // 180 <----------------------------------------> 0 | + // -angle ( /|\ ) angle | + // / | \ | + // / | \ | + // Quadrant 3 / | \ Quadrant 2 | + // / | \ | + // / | \ | + // / | \ | + // * | * | + // ^ | + // 270 | + + // Convert the local angles to unit circle angles + switch (quadrant) { + case 0: + angle = 180 + angle; + break; + case 1: + // Do nothing + break; + case 2: + angle = 180 + angle; + break; + case 3: + angle = 360 + angle; + break; + } + + return angle; + } +} + +void LeverControl::renderFrame(uint frameNumber) { + if (frameNumber == 0) { + _lastRenderedFrame = frameNumber; + } else if (frameNumber < _lastRenderedFrame && _mirrored) { + _lastRenderedFrame = frameNumber; + frameNumber = (_frameCount * 2) - frameNumber - 1; + } else { + _lastRenderedFrame = frameNumber; + } + + const uint16 *frameData = 0; + int x = _animationCoords.left; + int y = _animationCoords.top; + int width = 0; + int height = 0; + + if (_fileType == RLF) { + // getFrameData() will automatically optimize to getNextFrame() / getPreviousFrame() if it can + frameData = (const uint16 *)_animation.rlf->getFrameData(frameNumber)->getPixels(); + width = _animation.rlf->width(); // Use the animation width instead of _animationCoords.width() + height = _animation.rlf->height(); // Use the animation height instead of _animationCoords.height() + } else if (_fileType == AVI) { + _animation.avi->seekToFrame(frameNumber); + const Graphics::Surface *surface = _animation.avi->decodeNextFrame(); + frameData = (const uint16 *)surface->getPixels(); + width = surface->w; + height = surface->h; + } + + _engine->getRenderManager()->copyRectToWorkingWindow(frameData, x, y, width, width, height); +} + +} // End of namespace ZVision |