109 lines
2.5 KiB
C++
109 lines
2.5 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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/scummsys.h"
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#include "zvision/graphics/effects/light.h"
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#include "zvision/zvision.h"
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#include "zvision/graphics/render_manager.h"
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namespace ZVision {
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LightFx::LightFx(ZVision *engine, uint32 key, Common::Rect region, bool ported, EffectMap *Map, int8 delta, int8 minD, int8 maxD):
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GraphicsEffect(engine, key, region, ported) {
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_map = Map;
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_delta = delta;
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_up = true;
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_pos = 0;
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_minD = minD;
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if (_minD < -delta)
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_minD = -delta;
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_maxD = maxD;
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if (_maxD > delta)
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_maxD = delta;
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}
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LightFx::~LightFx() {
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if (_map)
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delete _map;
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}
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const Graphics::Surface *LightFx::draw(const Graphics::Surface &srcSubRect) {
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_surface.copyFrom(srcSubRect);
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EffectMap::iterator it = _map->begin();
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uint32 cnt = 0;
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uint32 dcolor = 0;
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if (_pos < 0) {
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uint8 cc = ((-_pos) & 0x1F) << 3;
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dcolor = _engine->_resourcePixelFormat.RGBToColor(cc, cc, cc);
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} else {
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uint8 cc = (_pos & 0x1F) << 3;
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dcolor = _engine->_resourcePixelFormat.RGBToColor(cc, cc, cc);
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}
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for (uint16 j = 0; j < _surface.h; j++) {
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uint16 *lineBuf = (uint16 *)_surface.getBasePtr(0, j);
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for (uint16 i = 0; i < _surface.w; i++) {
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if (it->inEffect) {
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if (_pos < 0) {
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lineBuf[i] -= dcolor;
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} else {
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lineBuf[i] += dcolor;
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}
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}
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cnt++;
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if (cnt >= it->count) {
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it++;
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cnt = 0;
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}
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if (it == _map->end())
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break;
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}
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if (it == _map->end())
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break;
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}
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return &_surface;
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}
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void LightFx::update() {
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if (_up)
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_pos++;
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else
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_pos--;
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if (_pos <= _minD) {
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_up = !_up;
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_pos = _minD;
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} else if (_pos >= _maxD) {
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_up = !_up;
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_pos = _maxD;
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}
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}
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} // End of namespace ZVision
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