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Preserve unused metatile attributes

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This commit is contained in:
GriffinR
2022-02-03 18:10:50 -05:00
committed by huderlem
parent cca762ba94
commit cf973710c8
7 changed files with 84 additions and 87 deletions
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51
src/core/metatile.cpp
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@@ -6,7 +6,8 @@ Metatile::Metatile() :
behavior(0),
layerType(0),
encounterType(0),
terrainType(0)
terrainType(0),
unusedAttributes(0)
{ }
int Metatile::getIndexInTileset(int metatileId) {
@@ -22,3 +23,51 @@ QPoint Metatile::coordFromPixmapCoord(const QPointF &pixelCoord) {
int y = static_cast<int>(pixelCoord.y()) / 16;
return QPoint(x, y);
}
int Metatile::getAttributesSize(BaseGameVersion version) {
return (version == BaseGameVersion::pokefirered) ? 4 : 2;
}
// RSE attributes
const uint16_t behaviorMask_RSE = 0x00FF;
const uint16_t layerTypeMask_RSE = 0xF000;
const int behaviorShift_RSE = 0;
const int layerTypeShift_RSE = 12;
// FRLG attributes
const uint32_t behaviorMask_FRLG = 0x000001FF;
const uint32_t terrainTypeMask = 0x00003E00;
const uint32_t encounterTypeMask = 0x07000000;
const uint32_t layerTypeMask_FRLG = 0x60000000;
const int behaviorShift_FRLG = 0;
const int terrainTypeShift = 9;
const int encounterTypeShift = 24;
const int layerTypeShift_FRLG = 29;
uint32_t Metatile::getAttributes(BaseGameVersion version) {
uint32_t attributes = this->unusedAttributes;
if (version == BaseGameVersion::pokefirered) {
attributes |= (behavior << behaviorShift_FRLG) & behaviorMask_FRLG;
attributes |= (terrainType << terrainTypeShift) & terrainTypeMask;
attributes |= (encounterType << encounterTypeShift) & encounterTypeMask;
attributes |= (layerType << layerTypeShift_FRLG) & layerTypeMask_FRLG;
} else {
attributes |= (behavior << behaviorShift_RSE) & behaviorMask_RSE;
attributes |= (layerType << layerTypeShift_RSE) & layerTypeMask_RSE;
}
return attributes;
}
void Metatile::setAttributes(uint32_t data, BaseGameVersion version) {
if (version == BaseGameVersion::pokefirered) {
this->behavior = (data & behaviorMask_FRLG) >> behaviorShift_FRLG;
this->terrainType = (data & terrainTypeMask) >> terrainTypeShift;
this->encounterType = (data & encounterTypeMask) >> encounterTypeShift;
this->layerType = (data & layerTypeMask_FRLG) >> layerTypeShift_FRLG;
this->unusedAttributes = data & ~(behaviorMask_FRLG | terrainTypeMask | layerTypeMask_FRLG | encounterTypeMask);
} else {
this->behavior = (data & behaviorMask_RSE) >> behaviorShift_RSE;
this->layerType = (data & layerTypeMask_RSE) >> layerTypeShift_RSE;
this->unusedAttributes = data & ~(behaviorMask_RSE | layerTypeMask_RSE);
}
}