scummvm/engines/teenagent/surface_list.cpp
2011-05-12 01:16:22 +02:00

78 lines
2.1 KiB
C++

/* 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 "teenagent/surface.h"
#include "teenagent/surface_list.h"
#include "objects.h"
namespace TeenAgent {
SurfaceList::SurfaceList() : surfaces(NULL), surfaces_n(0) {}
SurfaceList::~SurfaceList() {
free();
}
void SurfaceList::load(Common::SeekableReadStream *stream, Type type, int sub_hack) {
free();
byte fn = stream->readByte();
if (stream->eos())
return;
surfaces_n = fn - sub_hack;
debug(0, "loading %u surfaces from list (skip %d)", surfaces_n, sub_hack);
if (surfaces_n == 0)
return;
surfaces = new Surface[surfaces_n];
for (byte i = 0; i < surfaces_n; ++i) {
uint offset = stream->readUint16LE();
uint pos = stream->pos();
stream->seek(offset);
surfaces[i].load(stream, Surface::kTypeOns);
stream->seek(pos);
}
}
void SurfaceList::free() {
delete[] surfaces;
surfaces = NULL;
surfaces_n = 0;
}
void SurfaceList::render(Graphics::Surface *surface, const Common::Rect & clip) const {
for(uint i = 0; i < surfaces_n; ++i) {
const Surface &s = surfaces[i];
Common::Rect r(s.x, s.y, s.x + s.w, s.y + s.h);
if (r.bottom < clip.bottom || !clip.intersects(r))
continue;
r.clip(clip);
r.translate(-s.x, -s.y);
s.render(surface, r.left, r.top, false, r);
}
}
}