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/* 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/graphics/effects/fog.h"
#include "zvision/zvision.h"
#include "zvision/graphics/render_manager.h"
#include "zvision/scripting/script_manager.h"
namespace ZVision {
FogFx::FogFx(ZVision *engine, uint32 key, Common::Rect region, bool ported, EffectMap *Map, const Common::String &clouds):
Effect(engine, key, region, ported) {
_map = Map;
_r = 0;
_g = 0;
_b = 0;
_pos = 0;
if (_engine->getSearchManager()->hasFile(clouds))
_engine->getRenderManager()->readImageToSurface(clouds, _fog);
else
_engine->getRenderManager()->readImageToSurface("cloud.tga", _fog);
_mp.resize(_fog.h);
for (int16 i = 0; i < _fog.h; i++) {
_mp[i].resize(_fog.w);
for (int16 j = 0; j < _fog.w; j++)
_mp[i][j] = true;
}
for (uint8 i = 0; i < 32; i++)
_colorMap[i] = 0;
}
FogFx::~FogFx() {
if (_map)
delete _map;
for (uint16 i = 0; i < _mp.size(); i++)
_mp[i].clear();
_mp.clear();
}
const Graphics::Surface *FogFx::draw(const Graphics::Surface &srcSubRect) {
_surface.copyFrom(srcSubRect);
EffectMap::iterator it = _map->begin();
uint32 cnt = 0;
for (uint16 j = 0; j < _surface.h; j++) {
uint16 *lineBuf = (uint16 *)_surface.getBasePtr(0, j);
for (uint16 i = 0; i < _surface.w; i++) {
if (it->inEffect) {
// Not 100% equivalent, but looks nice and not buggy
uint8 sr, sg, sb;
_engine->_pixelFormat.colorToRGB(lineBuf[i], sr, sg, sb);
uint16 fogColor = *(uint16 *)_fog.getBasePtr((i + _pos) % _fog.w, j);
uint8 dr, dg, db;
_engine->_pixelFormat.colorToRGB(_colorMap[fogColor & 0x1F], dr, dg, db);
uint16 fr = dr + sr;
if (fr > 255)
fr = 255;
uint16 fg = dg + sg;
if (fg > 255)
fg = 255;
uint16 fb = db + sb;
if (fb > 255)
fb = 255;
lineBuf[i] = _engine->_pixelFormat.RGBToColor(fr, fg, fb);
}
cnt++;
if (cnt >= it->count) {
it++;
cnt = 0;
}
if (it == _map->end())
break;
}
if (it == _map->end())
break;
}
return &_surface;
}
void FogFx::update() {
_pos += _engine->getScriptManager()->getStateValue(StateKey_EF9_Speed);
_pos %= _fog.w;
uint8 dr = _engine->getScriptManager()->getStateValue(StateKey_EF9_R);
uint8 dg = _engine->getScriptManager()->getStateValue(StateKey_EF9_G);
uint8 db = _engine->getScriptManager()->getStateValue(StateKey_EF9_B);
dr = CLIP((int)dr, 0, 31);
dg = CLIP((int)dg, 0, 31);
db = CLIP((int)db, 0, 31);
if (dr != _r || dg != _g || db != _b) {
if (_r > dr)
_r--;
else if (_r < dr)
_r++;
if (_g > dg)
_g--;
else if (_g < dg)
_g++;
if (_b > db)
_b--;
else if (_b < db)
_b++;
// Not 100% equivalent, but looks nice and not buggy
_colorMap[31] = _engine->_pixelFormat.RGBToColor(_r << 3, _g << 3, _b << 3);
for (uint8 i = 0; i < 31; i++) {
float perc = (float)i / 31.0;
uint8 cr = (float)_r * perc;
uint8 cg = (float)_g * perc;
uint8 cb = (float)_b * perc;
_colorMap[i] = _engine->_pixelFormat.RGBToColor(cr << 3, cg << 3, cb << 3);
}
}
for (uint16 j = 0; j < _fog.h; j++) {
uint16 *pix = (uint16 *)_fog.getBasePtr(0, j);
for (uint16 i = 0; i < _fog.w; i++) {
if (_mp[j][i]) {
if ((pix[i] & 0x1F) == 0x1F) {
pix[i]--;
_mp[j][i] = false;
} else
pix[i]++;
} else {
if ((pix[i] & 0x1F) == 0) {
pix[i]++;
_mp[j][i] = true;
} else
pix[i]--;
}
}
}
}
} // End of namespace ZVision
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