71 lines
2.2 KiB
C++
71 lines
2.2 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/misc/mousefollow.h"
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#include "engines/nancy/enginedata.h"
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#include "engines/nancy/nancy.h"
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#include "engines/nancy/graphics.h"
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namespace Nancy {
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namespace Misc {
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MouseFollowObject::MouseFollowObject()
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: RenderObject(8) {
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_viewportData = GetEngineData(VIEW);
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}
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void MouseFollowObject::handleInput(NancyInput &input) {
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Common::Point mousePos = input.mousePos;
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Common::Rect viewport = _viewportData->screenPosition;
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if (!_isPickedUp || !viewport.contains(mousePos)) {
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return;
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}
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mousePos.x -= viewport.left;
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mousePos.y -= viewport.top;
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// Move the tile under the cursor
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Common::Rect newScreenPos = _drawSurface.getBounds();
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newScreenPos.moveTo(mousePos);
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newScreenPos.translate(-newScreenPos.width() / 2, -newScreenPos.height() / 2);
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// Clip movement so the ring stays entirely inside the viewport
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if (newScreenPos.left < 0) {
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newScreenPos.translate(-newScreenPos.left, 0);
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} else if (newScreenPos.right > viewport.width()) {
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newScreenPos.translate(viewport.width() - newScreenPos.right, 0);
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}
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if (newScreenPos.top < 0) {
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newScreenPos.translate(0, -newScreenPos.top);
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} else if (newScreenPos.bottom > viewport.height()) {
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newScreenPos.translate(0, viewport.height() - newScreenPos.bottom);
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}
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if (newScreenPos != _screenPosition) {
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moveTo(newScreenPos);
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}
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}
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} // End of namespace Misc
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} // End of namespace Nancy
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