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d4ec8c5815
This gives an option for creating a project where the event handling is centralized in a single processing loop, and is then dispatched to 'views' that contain the game logic. Like the original skeleton engine, the created events-based engine contains a single default view showing a palette cycle.
64 lines
1.9 KiB
C++
64 lines
1.9 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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*
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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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*
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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 "common/system.h"
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#include "graphics/palette.h"
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#include "xyzzy/view1.h"
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namespace Xyzzy {
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bool View1::msgFocus(const FocusMessage &msg) {
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Common::fill(&_pal[0], &_pal[256 * 3], 0);
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_offset = 128;
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return true;
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}
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bool View1::msgKeypress(const KeypressMessage &msg) {
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// Any keypress to close the view
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close();
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return true;
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}
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void View1::draw() {
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// Draw a bunch of squares on screen
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Graphics::ManagedSurface s = getSurface();
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for (int i = 0; i < 100; ++i)
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s.frameRect(Common::Rect(i, i, 320 - i, 200 - i), i);
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}
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bool View1::tick() {
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// Cycle the palette
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++_offset;
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for (int i = 0; i < 256; ++i)
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_pal[i * 3 + 1] = (i + _offset) % 256;
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g_system->getPaletteManager()->setPalette(_pal, 0, 256);
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// Below is redundant since we're only cycling the palette, but it demonstrates
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// how to trigger the view to do further draws after the first time, since views
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// don't automatically keep redrawing unless you tell it to
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if ((_offset % 256) == 0)
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redraw();
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return true;
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}
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} // namespace Xyzzy
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