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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.
*
*/
/*
* This code is based on the original source code of Lord Avalot d'Argent version 1.3.
* Copyright (c) 1994-1995 Mike, Mark and Thomas Thurman.
*/
#include "avalanche/avalanche.h"
#include "avalanche/graphics.h"
#include "common/system.h"
#include "common/rect.h"
#include "engines/util.h"
#include "graphics/palette.h"
namespace Avalanche {
const byte Graphics::_egaPaletteIndex[16] = {0, 1, 2, 3, 4, 5, 20, 7, 56, 57, 58, 59, 60, 61, 62, 63};
Graphics::Graphics(AvalancheEngine *vm) {
_vm = vm;
}
void Graphics::init() {
initGraphics(kScreenWidth, kScreenHeight * 2, true); // Doubling the height.
for (int i = 0; i < 64; ++i) {
_egaPalette[i][0] = (i >> 2 & 1) * 0xaa + (i >> 5 & 1) * 0x55;
_egaPalette[i][1] = (i >> 1 & 1) * 0xaa + (i >> 4 & 1) * 0x55;
_egaPalette[i][2] = (i & 1) * 0xaa + (i >> 3 & 1) * 0x55;
}
for (byte i = 0; i < 16; i++)
g_system->getPaletteManager()->setPalette(_egaPalette[_egaPaletteIndex[i]], i, 1);
_surface.create(kScreenWidth, kScreenHeight, ::Graphics::PixelFormat::createFormatCLUT8());
}
Graphics::~Graphics() {
_surface.free();
}
void Graphics::flesh_colours()
{
g_system->getPaletteManager()->setPalette(_egaPalette[39], 13, 1);
g_system->getPaletteManager()->setPalette(_egaPalette[28], 5, 1);
}
byte *Graphics::getPixel(int16 x, int16 y) {
return (byte *)_surface.getBasePtr(x, y);
}
void Graphics::drawFrame(int16 x1, int16 y1, int16 x2, int16 y2, int16 color) {
_surface.frameRect(Common::Rect(x1, y1, x2, y2), color);
}
void Graphics::drawBar(int16 x1, int16 y1, int16 x2, int16 y2, int16 color) {
_surface.fillRect(Common::Rect(x1, y1, x2, y2), color);
}
void Graphics::drawSprite(const SpriteInfo &sprite, byte picnum, int16 x, int16 y) {
/* First we make the pixels of the spirte blank. */
for (byte qay = 0; qay < sprite.yl; qay++) {
byte *mask = new byte[sprite.xl];
for (byte qax = 0; qax < sprite.xl; qax++) {
byte count = qax / 8;
mask[qax] = ((*sprite.sil[picnum])[qay][count] >> ((7 - qax % 8)) & 1);
if (mask[qax] == 0)
*getPixel(x + qax, y + qay) = 0;
}
delete[] mask;
}
/* Then we draw the picture to the blank places. */
uint16 i = 0; // Because the original siltype starts at 5!!! See Graphics.h for definition.
for (byte qay = 0; qay < sprite.yl; qay++)
for (int8 plane = 3; plane >= 0; plane--) // The planes are in the opposite way.
for (uint16 qax = 0; qax < sprite.xl; qax += 8) {
byte pixel = (*sprite.mani[picnum])[i++];
for (byte bit = 0; bit < 8; bit++) {
byte pixelBit = (pixel >> bit) & 1;
*getPixel(x + qax + 7 - bit, y + qay) += (pixelBit << plane);
}
}
}
::Graphics::Surface Graphics::loadPictureGraphic(Common::File &file) {
// This function mimics Pascal's getimage().
// The height and the width are stored in 2-2 bytes. We have to add 1 to each because Pascal stores the value of them -1.
uint16 pictureWidth = file.readUint16LE() + 1;
uint16 pictureHeight = file.readUint16LE() + 1;
::Graphics::Surface picture; // We make a Surface object for the picture itself.
picture.create(pictureWidth, pictureHeight, ::Graphics::PixelFormat::createFormatCLUT8());
// Produce the picture. We read it in row-by-row, and every row has 4 planes.
for (byte y = 0; y < pictureHeight; y++)
for (int8 plane = 3; plane >= 0; plane--) // The planes are in the opposite way.
for (uint16 x = 0; x < pictureWidth; x += 8) {
byte pixel = file.readByte();
for (byte bit = 0; bit < 8; bit++) {
byte pixelBit = (pixel >> bit) & 1;
*(byte *)picture.getBasePtr(x + 7 - bit, y) += (pixelBit << plane);
}
}
return picture;
}
::Graphics::Surface Graphics::loadPictureRow(Common::File &file, uint16 width, uint16 height) {
// This function is our own creation, very much like the one above. The main differences are that
// we don't read the width and the height from the file, the planes are in a different order
// and we read the picture plane-by-plane.
::Graphics::Surface picture;
picture.create(width, height, ::Graphics::PixelFormat::createFormatCLUT8());
for (byte plane = 0; plane < 4; plane++)
for (uint16 y = 0; y < height; y++)
for (uint16 x = 0; x < width; x += 8) {
byte pixel = file.readByte();
for (byte i = 0; i < 8; i++) {
byte pixelBit = (pixel >> i) & 1;
*(byte *)picture.getBasePtr(x + 7 - i, y) += (pixelBit << plane);
}
}
return picture;
}
void Graphics::drawPicture(const ::Graphics::Surface &picture, uint16 destX, uint16 destY) {
// Copy the picture to the given place on the screen.
for (uint16 y = 0; y < picture.h; y++)
for (uint16 x = 0; x < picture.w; x++)
*getPixel(x + destX, y + destY) = *(byte *)picture.getBasePtr(x, y);
}
void Graphics::refreshScreen() {
// These cycles are for doubling the screen height.
::Graphics::Surface picture;
picture.create(kScreenWidth, kScreenHeight * 2, ::Graphics::PixelFormat::createFormatCLUT8());
for (uint16 y = 0; y < picture.h / 2; y++)
for (uint16 x = 0; x < picture.w; x++)
for (byte j = 0; j < 2; j++)
*(byte *)picture.getBasePtr(x, y * 2 + j) = *(byte *)_surface.getBasePtr(x, y);
// Now we copy the stretched picture to the screen.
g_system->copyRectToScreen(picture.pixels, picture.pitch, 0, 0, kScreenWidth, kScreenHeight * 2);
g_system->updateScreen();
picture.free();
}
} // End of namespace Avalanche
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