121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "engines/nancy/nancy.h"
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#include "engines/nancy/graphics.h"
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#include "engines/nancy/resource.h"
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#include "engines/nancy/sound.h"
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#include "engines/nancy/input.h"
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#include "engines/nancy/util.h"
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#include "engines/nancy/state/scene.h"
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#include "engines/nancy/action/puzzle/mouselightpuzzle.h"
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namespace Nancy {
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namespace Action {
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void MouseLightPuzzle::init() {
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Common::Rect screenBounds = NancySceneState.getViewport().getBounds();
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Graphics::ManagedSurface baseImage;
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g_nancy->_resource->loadImage(_imageName, baseImage);
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_drawSurface.create(screenBounds.width(), screenBounds.height(), g_nancy->_graphics->getTransparentPixelFormat());
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_drawSurface.blitFrom(baseImage);
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((Graphics::Surface)_drawSurface).setAlpha(0);
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setVisible(true);
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moveTo(screenBounds);
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_maskCircle.create(_radius * 2, _radius * 2, g_nancy->_graphics->getInputPixelFormat());
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_maskCircle.clear();
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if (_smoothEdges) {
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for (int y = -_radius; y < _radius; ++y) {
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for (int x = -_radius; x < _radius; ++x) {
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_maskCircle.setPixel(x + _radius, y + _radius, (uint16)(expf(-(float)((y * y + x * x) * (y * y + x * x)) / (float)(_radius * _radius * _radius * _radius / 4)) * 0xFF));
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}
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}
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} else {
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for (int y = -_radius; y < _radius; ++y) {
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for (int x = -_radius; x < _radius; ++x) {
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if (sqrt(y * y + x * x) < _radius) {
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_maskCircle.setPixel(x + _radius, y + _radius, 0xFF);
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}
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}
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}
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}
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}
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void MouseLightPuzzle::execute() {
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if (_state == kBegin) {
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init();
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registerGraphics();
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_state = kRun;
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}
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}
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void MouseLightPuzzle::readData(Common::SeekableReadStream &stream) {
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readFilename(stream, _imageName);
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_radius = stream.readByte();
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_smoothEdges = stream.readByte();
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}
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void MouseLightPuzzle::handleInput(NancyInput &input) {
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if (_state != kRun) {
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return;
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}
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if (_lastMousePos == input.mousePos) {
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return;
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}
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_lastMousePos = input.mousePos;
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((Graphics::Surface)_drawSurface).setAlpha(0);
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_needsRedraw = true;
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Common::Rect vpScreenPos = NancySceneState.getViewport().convertViewportToScreen(_screenPosition);
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if (!vpScreenPos.contains(input.mousePos)) {
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return;
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}
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Common::Point blitDestPoint = input.mousePos;
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blitDestPoint -= { vpScreenPos.left, vpScreenPos.top };
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blitDestPoint -= { _radius, _radius };
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Common::Rect srcRect = _maskCircle.getBounds();
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Common::Rect::getBlitRect(blitDestPoint, srcRect, _drawSurface.getBounds());
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// Copy over the transparency to the draw surface
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for (int y = srcRect.top; y < srcRect.bottom; ++y) {
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uint32 *drawSurfPtr = (uint32 *)_drawSurface.getBasePtr(blitDestPoint.x, y + blitDestPoint.y - srcRect.top);
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uint16 *circlePtr = (uint16 *)_maskCircle.getBasePtr(srcRect.left, y);
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for (int x = srcRect.left; x < srcRect.right; ++x) {
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*drawSurfPtr = (*drawSurfPtr & 0xFFFFFF00) | (byte)*circlePtr;
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++drawSurfPtr;
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++circlePtr;
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}
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}
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}
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} // End of namespace Action
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} // End of namespace Nancy
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