diff options
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..e08fdd10f3 --- /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/scripting/controls/lever_control.h" + +#include "zvision/zvision.h" +#include "zvision/scripting/script_manager.h" +#include "zvision/graphics/render_manager.h" +#include "zvision/cursors/cursor_manager.h" +#include "zvision/animation/rlf_animation.h" +#include "zvision/video/zork_avi_decoder.h" +#include "zvision/utility/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 |