mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-23 18:24:59 +00:00
125 lines
3.6 KiB
C++
125 lines
3.6 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/pack.h"
|
|
#include "teenagent/teenagent.h"
|
|
|
|
#include "common/stream.h"
|
|
#include "common/debug.h"
|
|
|
|
namespace TeenAgent {
|
|
|
|
Surface::Surface() : x(0), y(0) {
|
|
}
|
|
|
|
Surface::~Surface() {
|
|
free();
|
|
}
|
|
|
|
void Surface::load(Common::SeekableReadStream &stream, Type type) {
|
|
debugC(0, kDebugSurface, "load()");
|
|
free();
|
|
|
|
x = y = 0;
|
|
|
|
uint16 w_ = stream.readUint16LE();
|
|
uint16 h_ = stream.readUint16LE();
|
|
|
|
if (type != kTypeLan) {
|
|
uint16 pos = stream.readUint16LE();
|
|
x = pos % screenWidth;
|
|
y = pos / screenWidth;
|
|
}
|
|
|
|
debugC(0, kDebugSurface, "declared info: %ux%u (%04xx%04x) -> %u,%u", w_, h_, w_, h_, x, y);
|
|
if (stream.eos() || w_ == 0)
|
|
return;
|
|
|
|
if (w_ * h_ > stream.size()) {
|
|
debugC(0, kDebugSurface, "invalid surface %ux%u -> %u,%u", w_, h_, x, y);
|
|
return;
|
|
}
|
|
|
|
debugC(0, kDebugSurface, "creating surface %ux%u -> %u,%u", w_, h_, x, y);
|
|
create(w_, h_, Graphics::PixelFormat::createFormatCLUT8());
|
|
|
|
stream.read(pixels, w_ * h_);
|
|
}
|
|
|
|
Common::Rect Surface::render(Graphics::Surface *surface, int dx, int dy, bool mirror, Common::Rect src_rect, uint zoom) const {
|
|
if (src_rect.isEmpty()) {
|
|
src_rect = Common::Rect(0, 0, w, h);
|
|
}
|
|
Common::Rect dst_rect(x + dx, y + dy, x + dx + zoom * src_rect.width() / 256, y + dy + zoom * src_rect.height() / 256);
|
|
if (dst_rect.left < 0) {
|
|
src_rect.left = -dst_rect.left;
|
|
dst_rect.left = 0;
|
|
}
|
|
if (dst_rect.right > surface->w) {
|
|
src_rect.right -= dst_rect.right - surface->w;
|
|
dst_rect.right = surface->w;
|
|
}
|
|
if (dst_rect.top < 0) {
|
|
src_rect.top -= dst_rect.top;
|
|
dst_rect.top = 0;
|
|
}
|
|
if (dst_rect.bottom > surface->h) {
|
|
src_rect.bottom -= dst_rect.bottom - surface->h;
|
|
dst_rect.bottom = surface->h;
|
|
}
|
|
if (src_rect.isEmpty() || dst_rect.isEmpty())
|
|
return Common::Rect();
|
|
|
|
if (zoom == 256) {
|
|
const byte *src = (const byte *)getBasePtr(0, src_rect.top);
|
|
byte *dst_base = (byte *)surface->getBasePtr(dst_rect.left, dst_rect.top);
|
|
|
|
for (int i = src_rect.top; i < src_rect.bottom; ++i) {
|
|
byte *dst = dst_base;
|
|
for (int j = src_rect.left; j < src_rect.right; ++j) {
|
|
byte p = src[(mirror ? w - j - 1 : j)];
|
|
if (p != 0xff)
|
|
*dst++ = p;
|
|
else
|
|
++dst;
|
|
}
|
|
dst_base += surface->pitch;
|
|
src += pitch;
|
|
}
|
|
} else {
|
|
byte *dst = (byte *)surface->getBasePtr(dst_rect.left, dst_rect.top);
|
|
for (int i = 0; i < dst_rect.height(); ++i) {
|
|
for (int j = 0; j < dst_rect.width(); ++j) {
|
|
int px = j * 256 / zoom;
|
|
const byte *src = (const byte *)getBasePtr(src_rect.left + (mirror ? w - px - 1 : px), src_rect.top + i * 256 / zoom);
|
|
byte p = *src;
|
|
if (p != 0xff)
|
|
dst[j] = p;
|
|
}
|
|
dst += surface->pitch;
|
|
}
|
|
}
|
|
return dst_rect;
|
|
}
|
|
|
|
} // End of namespace TeenAgent
|