porymap/src/core/advancemapparser.cpp
2025-08-01 02:47:59 -04:00

224 lines
9.1 KiB
C++

#include "advancemapparser.h"
#include "log.h"
#include "project.h"
#include "maplayout.h"
Layout *AdvanceMapParser::parseLayout(const QString &filepath, bool *error, const Project *project)
{
QFile file(filepath);
if (!file.open(QIODevice::ReadOnly)) {
*error = true;
logError(QString("Could not open Advance Map 1.92 Map .map file '%1': ").arg(filepath) + file.errorString());
return nullptr;
}
QByteArray in = file.readAll();
file.close();
if (in.length() < 20 || in.length() % 2 != 0) {
*error = true;
logError(QString("Advance Map 1.92 Map .map file '%1' is an unexpected size.").arg(filepath));
return nullptr;
}
int borderWidth = static_cast<unsigned char>(in.at(16)); // 0 in RSE .map files
int borderHeight = static_cast<unsigned char>(in.at(17)); // 0 in RSE .map files
int numBorderTiles = borderWidth * borderHeight; // 0 if RSE
int mapDataOffset = 20 + (numBorderTiles * 2); // FRLG .map files store border metatile data after the header
int mapWidth = static_cast<unsigned char>(in.at(0)) |
(static_cast<unsigned char>(in.at(1)) << 8) |
(static_cast<unsigned char>(in.at(2)) << 16) |
(static_cast<unsigned char>(in.at(3)) << 24);
int mapHeight = static_cast<unsigned char>(in.at(4)) |
(static_cast<unsigned char>(in.at(5)) << 8) |
(static_cast<unsigned char>(in.at(6)) << 16) |
(static_cast<unsigned char>(in.at(7)) << 24);
int mapPrimaryTilesetNum = static_cast<unsigned char>(in.at(8)) |
(static_cast<unsigned char>(in.at(9)) << 8) |
(static_cast<unsigned char>(in.at(10)) << 16) |
(static_cast<unsigned char>(in.at(11)) << 24);
int mapSecondaryTilesetNum = static_cast<unsigned char>(in.at(12)) |
(static_cast<unsigned char>(in.at(13)) << 8) |
(static_cast<unsigned char>(in.at(14)) << 16) |
(static_cast<unsigned char>(in.at(15)) << 24);
int numMetatiles = mapWidth * mapHeight;
int expectedFileSize = 20 + (numBorderTiles * 2) + (numMetatiles * 2);
if (in.length() != expectedFileSize) {
*error = true;
logError(QString(".map file is an unexpected size. Expected %1 bytes, but it has %2 bytes.").arg(expectedFileSize).arg(in.length()));
return nullptr;
}
Blockdata blockdata;
for (int i = mapDataOffset; (i + 1) < in.length(); i += 2) {
uint16_t word = static_cast<uint16_t>((in[i] & 0xff) + ((in[i + 1] & 0xff) << 8));
blockdata.append(word);
}
Blockdata border;
if (numBorderTiles != 0) {
for (int i = 20; (i + 1) < mapDataOffset; i += 2) {
uint16_t word = static_cast<uint16_t>((in[i] & 0xff) + ((in[i + 1] & 0xff) << 8));
border.append(word);
}
}
Layout *mapLayout = new Layout();
mapLayout->width = mapWidth;
mapLayout->height = mapHeight;
mapLayout->border_width = (borderWidth == 0) ? DEFAULT_BORDER_WIDTH : borderWidth;
mapLayout->border_height = (borderHeight == 0) ? DEFAULT_BORDER_HEIGHT : borderHeight;
const QList<QString> tilesets = project->tilesetLabelsOrdered;
const QString defaultPrimaryTileset = project->getDefaultPrimaryTilesetLabel();
QString primaryTilesetLabel = tilesets.value(mapPrimaryTilesetNum, defaultPrimaryTileset);
if (!project->primaryTilesetLabels.contains(primaryTilesetLabel)) {
// AdvanceMap's primary tileset value points to a secondary tileset. Ignore it.
primaryTilesetLabel = defaultPrimaryTileset;
}
const QString defaultSecondaryTileset = project->getDefaultSecondaryTilesetLabel();
QString secondaryTilesetLabel = tilesets.value(mapSecondaryTilesetNum, defaultSecondaryTileset);
if (!project->secondaryTilesetLabels.contains(secondaryTilesetLabel)) {
// AdvanceMap's secondary tileset value points to a primary tileset. Ignore it.
secondaryTilesetLabel = defaultSecondaryTileset;
}
mapLayout->tileset_primary_label = primaryTilesetLabel;
mapLayout->tileset_secondary_label = secondaryTilesetLabel;
mapLayout->blockdata = blockdata;
if (!border.isEmpty()) {
mapLayout->border = border;
}
return mapLayout;
}
QList<Metatile*> AdvanceMapParser::parseMetatiles(const QString &filepath, bool *error, bool primaryTileset)
{
QFile file(filepath);
if (!file.open(QIODevice::ReadOnly)) {
*error = true;
logError(QString("Could not open Advance Map 1.92 Metatile .bvd file '%1': ").arg(filepath) + file.errorString());
return { };
}
QByteArray in = file.readAll();
file.close();
if (in.length() < 9 || in.length() % 2 != 0) {
*error = true;
logError(QString("Advance Map 1.92 Metatile .bvd file '%1' is an unexpected size.").arg(filepath));
return { };
}
int projIdOffset = in.length() - 4;
int metatileSize = 16;
BaseGameVersion version;
if (in.at(projIdOffset + 0) == 'R'
&& in.at(projIdOffset + 1) == 'S'
&& in.at(projIdOffset + 2) == 'E'
&& in.at(projIdOffset + 3) == ' ') {
// ruby and emerald are handled equally here.
version = BaseGameVersion::pokeemerald;
} else if (in.at(projIdOffset + 0) == 'F'
&& in.at(projIdOffset + 1) == 'R'
&& in.at(projIdOffset + 2) == 'L'
&& in.at(projIdOffset + 3) == 'G') {
version = BaseGameVersion::pokefirered;
} else {
*error = true;
logError(QString("Detected unsupported game type from .bvd file. Last 4 bytes of file must be 'RSE ' or 'FRLG'."));
return { };
}
int attrSize = Metatile::getDefaultAttributesSize(version);
int maxMetatiles = primaryTileset ? Project::getNumMetatilesPrimary() : Project::getNumMetatilesSecondary();
int numMetatiles = static_cast<unsigned char>(in.at(0)) |
(static_cast<unsigned char>(in.at(1)) << 8) |
(static_cast<unsigned char>(in.at(2)) << 16) |
(static_cast<unsigned char>(in.at(3)) << 24);
if (numMetatiles > maxMetatiles) {
*error = true;
logError(QString(".bvd file contains data for %1 metatiles, but the maximum number of metatiles is %2.").arg(numMetatiles).arg(maxMetatiles));
return { };
}
if (numMetatiles < 1) {
*error = true;
logError(QString(".bvd file contains no data for metatiles."));
return { };
}
int expectedFileSize = 4 + (metatileSize * numMetatiles) + (attrSize * numMetatiles) + 4;
if (in.length() != expectedFileSize) {
*error = true;
logError(QString(".bvd file is an unexpected size. Expected %1 bytes, but it has %2 bytes.").arg(expectedFileSize).arg(in.length()));
return { };
}
QList<Metatile*> metatiles;
for (int i = 0; i < numMetatiles; i++) {
Metatile *metatile = new Metatile();
QList<Tile> tiles;
for (int j = 0; j < 8; j++) {
int metatileOffset = 4 + i * metatileSize + j * 2;
Tile tile(static_cast<uint16_t>(
static_cast<unsigned char>(in.at(metatileOffset)) |
(static_cast<unsigned char>(in.at(metatileOffset + 1)) << 8)));
tiles.append(tile);
}
// AdvanceMap .bvd files only contain 8 tiles of data per metatile.
// If the user has triple-layer metatiles enabled we need to fill the remaining 4 tiles ourselves.
if (projectConfig.tripleLayerMetatilesEnabled) {
Tile tile = Tile();
for (int j = 0; j < 4; j++)
tiles.append(tile);
}
int attrOffset = 4 + (numMetatiles * metatileSize) + (i * attrSize);
uint32_t attributes = 0;
for (int j = 0; j < attrSize; j++)
attributes |= static_cast<unsigned char>(in.at(attrOffset + j)) << (8 * j);
metatile->setAttributes(attributes, version);
metatile->tiles = tiles;
metatiles.append(metatile);
}
return metatiles;
}
QList<QRgb> AdvanceMapParser::parsePalette(const QString &filepath, bool *error) {
QFile file(filepath);
if (!file.open(QIODevice::ReadOnly)) {
*error = true;
logError(QString("Could not open Advance Map 1.92 palette file '%1': ").arg(filepath) + file.errorString());
return QList<QRgb>();
}
QByteArray in = file.readAll();
file.close();
if (in.length() % 4 != 0) {
*error = true;
logError(QString("Advance Map 1.92 palette file '%1' had an unexpected format. File's length must be a multiple of 4, but the length is %2.").arg(filepath).arg(in.length()));
return QList<QRgb>();
}
QList<QRgb> palette;
int i = 0;
while (i < in.length()) {
unsigned char red = static_cast<unsigned char>(in.at(i + 0));
unsigned char green = static_cast<unsigned char>(in.at(i + 1));
unsigned char blue = static_cast<unsigned char>(in.at(i + 2));
palette.append(qRgb(red, green, blue));
i += 4;
}
return palette;
}