mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-23 02:11:38 +00:00
301 lines
7.2 KiB
C++
301 lines
7.2 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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* 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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* 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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* $URL$
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* $Id$
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*
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*/
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#include "toon/picture.h"
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#include "toon/tools.h"
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#include "common/stack.h"
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namespace Toon {
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bool Picture::loadPicture(Common::String file, bool totalPalette /*= false*/) {
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debugC(1, kDebugPicture, "loadPicture(%s, %d)", file.c_str(), (totalPalette) ? 1 : 0);
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uint32 size = 0;
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uint8 *fileData = _vm->resources()->getFileData(file, &size);
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if (!fileData)
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return false;
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_useFullPalette = totalPalette;
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uint32 compId = READ_BE_UINT32(fileData);
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switch (compId) {
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case kCompLZSS: {
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uint32 dstsize = READ_LE_UINT32(fileData + 4);
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_data = new uint8[dstsize];
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decompressLZSS(fileData + 8, _data, dstsize);
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// size can only be 640x400 or 1280x400
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if (dstsize > 640 * 400 + 768)
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_width = 1280;
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else
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_width = 640;
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_height = 400;
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// do we have a palette ?
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_paletteEntries = (dstsize & 0x7ff) / 3;
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if (_paletteEntries) {
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_palette = new uint8[_paletteEntries * 3];
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memcpy(_palette, _data + dstsize - (dstsize & 0x7ff), _paletteEntries * 3);
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_vm->fixPaletteEntries(_palette, _paletteEntries);
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} else {
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_palette = 0;
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}
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return true;
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break;
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}
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case kCompSPCN: {
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uint32 decSize = READ_LE_UINT32(fileData + 10);
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_data = new uint8[decSize+100];
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_paletteEntries = READ_LE_UINT16(fileData + 14) / 3;
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if (_paletteEntries) {
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_palette = new uint8[_paletteEntries * 3];
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memcpy(_palette, fileData + 16, _paletteEntries * 3);
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_vm->fixPaletteEntries(_palette, _paletteEntries);
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}
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// size can only be 640x400 or 1280x400
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if (decSize > 640 * 400 + 768)
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_width = 1280;
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else
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_width = 640;
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_height = 400;
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// decompress the picture into our buffer
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decompressSPCN(fileData + 16 + _paletteEntries * 3, _data, decSize);
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return true;
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break;
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}
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case kCompRNC1: {
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Toon::RncDecoder rnc;
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// allocate enough place
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uint32 decSize = READ_BE_UINT32(fileData + 4);
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_data = new uint8[decSize];
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rnc.unpackM1(fileData, _data);
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// size can only be 640x400 or 1280x400
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if (decSize > 640 * 400 + 768)
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_width = 1280;
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else
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_width = 640;
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_height = 400;
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return true;
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break;
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}
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case kCompRNC2: {
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Toon::RncDecoder rnc;
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// allocate enough place
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uint32 decSize = READ_BE_UINT32(fileData + 4);
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_data = new uint8[decSize];
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decSize = rnc.unpackM2(fileData, _data);
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if (decSize > 640 * 400 + 768)
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_width = 1280;
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else
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_width = 640;
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_height = 400;
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return true;
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break;
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}
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}
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return false;
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}
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Picture::Picture(ToonEngine *vm) : _vm(vm) {
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}
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void Picture::setupPalette() {
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debugC(1, kDebugPicture, "setupPalette()");
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if (_useFullPalette)
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_vm->setPaletteEntries(_palette, 0, 255);
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else
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_vm->setPaletteEntries(_palette, 1, 128);
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}
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void Picture::drawMask(Graphics::Surface &surface, int32 x, int32 y, int32 dx, int32 dy) {
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debugC(1, kDebugPicture, "drawMask(surface, %d, %d, %d, %d)", x, y, dx, dy);
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for (int32 i = 0; i < 128; i++) {
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byte color[3];
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color[0] = i * 2;
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color[1] = i * 2;
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color[2] = 255 - i * 2;
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_vm->setPaletteEntries(color, i, 1);
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}
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int32 rx = MIN(_width, surface.w - x);
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int32 ry = MIN(_height, surface.h - y);
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if (rx < 0 || ry < 0)
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return;
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int32 destPitch = surface.pitch;
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int32 srcPitch = _width;
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uint8 *c = _data + _width * dy + dx ;
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uint8 *curRow = (uint8 *)surface.pixels + y * destPitch + x;
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for (int32 yy = 0; yy < ry; yy++) {
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uint8 *curSrc = c;
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uint8 *cur = curRow;
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for (int32 xx = 0; xx < rx; xx++) {
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//*cur = (*curSrc >> 5) * 8; // & 0x1f;
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*cur = (*curSrc & 0x1f) ? 127 : 0;
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curSrc++;
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cur++;
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}
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curRow += destPitch;
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c += srcPitch;
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}
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}
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void Picture::draw(Graphics::Surface &surface, int32 x, int32 y, int32 dx, int32 dy) {
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debugC(6, kDebugPicture, "draw(surface, %d, %d, %d, %d)", x, y, dx, dy);
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int32 rx = MIN(_width, surface.w - x);
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int32 ry = MIN(_height, surface.h - y);
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if (rx < 0 || ry < 0)
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return;
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int32 destPitch = surface.pitch;
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int32 srcPitch = _width;
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uint8 *c = _data + _width * dy + dx ;
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uint8 *curRow = (uint8 *)surface.pixels + y * destPitch + x;
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for (int32 yy = 0; yy < ry; yy++) {
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uint8 *curSrc = c;
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uint8 *cur = curRow;
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for (int32 xx = 0; xx < rx; xx++) {
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*cur = *curSrc ;
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curSrc++;
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cur++;
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}
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curRow += destPitch;
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c += srcPitch;
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}
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}
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uint8 Picture::getData(int32 x, int32 y) {
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debugC(6, kDebugPicture, "getData(%d, %d)", x, y);
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if (!_data)
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return 0;
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return _data[y * _width + x];
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}
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// use original work from johndoe
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void Picture::floodFillNotWalkableOnMask(int32 x, int32 y) {
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debugC(1, kDebugPicture, "floodFillNotWalkableOnMask(%d, %d)", x, y);
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// Stack-based floodFill algorithm based on
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// http://student.kuleuven.be/~m0216922/CG/files/floodfill.cpp
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Common::Stack<Common::Point> stack;
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bool spanLeft, spanRight;
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stack.push(Common::Point(x, y));
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while (!stack.empty()) {
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Common::Point pt = stack.pop();
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while (_data[pt.x + pt.y * _width] & 0x1F && pt.y >= 0)
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pt.y--;
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pt.y++;
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spanLeft = false;
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spanRight = false;
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while (_data[pt.x + pt.y * _width] & 0x1F && pt.y < _height) {
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_data[pt.x + pt.y * _width] &= 0xE0;
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if (!spanLeft && pt.x > 0 && _data[pt.x - 1 + pt.y * _width] & 0x1F) {
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stack.push(Common::Point(pt.x - 1, pt.y));
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spanLeft = 1;
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} else if (spanLeft && pt.x > 0 && !(_data[pt.x - 1 + pt.y * _width] & 0x1F)) {
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spanLeft = 0;
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}
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if (!spanRight && pt.x < _width - 1 && _data[pt.x + 1 + pt.y * _width] & 0x1F) {
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stack.push(Common::Point(pt.x + 1, pt.y));
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spanRight = 1;
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} else if (spanRight && pt.x < _width - 1 && !(_data[pt.x + 1 + pt.y * _width] & 0x1F)) {
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spanRight = 0;
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}
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pt.y++;
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}
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}
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}
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void Picture::drawLineOnMask(int32 x, int32 y, int32 x2, int32 y2, bool walkable) {
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debugC(1, kDebugPicture, "drawLineOnMask(%d, %d, %d, %d, %d)", x, y, x2, y2, (walkable) ? 1 : 0);
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static int32 lastX = 0;
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static int32 lastY = 0;
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if (x == -1) {
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x = lastX;
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y = lastY;
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}
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uint32 bx = x << 16;
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int32 dx = x2 - x;
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uint32 by = y << 16;
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int32 dy = y2 - y;
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uint32 adx = abs(dx);
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uint32 ady = abs(dy);
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int32 t = 0;
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if (adx <= ady)
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t = ady;
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else
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t = adx;
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int32 cdx = (dx << 16) / t;
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int32 cdy = (dy << 16) / t;
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int32 i = t;
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while (i) {
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if (!walkable) {
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_data[_width * (by >> 16) + (bx >> 16)] &= 0xe0;
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_data[_width * (by >> 16) + (bx >> 16)+1] &= 0xe0;
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} else {
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int32 v = _data[_width * (by >> 16) + (bx >> 16) - 1];
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_data[_width * (by >> 16) + (bx >> 16)] = v;
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_data[_width * (by >> 16) + (bx >> 16)+1] = v;
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}
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bx += cdx;
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by += cdy;
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i--;
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}
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}
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} // End of namespace Toon
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