tumbledemerald-legacy/src/fieldmap.c

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2022-05-19 19:14:13 +02:00
#include "global.h"
#include "battle_pyramid.h"
#include "bg.h"
#include "fieldmap.h"
#include "fldeff.h"
#include "fldeff_misc.h"
#include "frontier_util.h"
#include "menu.h"
#include "mirage_tower.h"
#include "overworld.h"
#include "palette.h"
#include "pokenav.h"
#include "script.h"
#include "secret_base.h"
#include "trainer_hill.h"
#include "tv.h"
#include "constants/rgb.h"
#include "constants/metatile_behaviors.h"
struct ConnectionFlags
{
u8 south:1;
u8 north:1;
u8 west:1;
u8 east:1;
};
EWRAM_DATA static u16 gBackupMapData[MAX_MAP_DATA_SIZE] = {0};
EWRAM_DATA struct MapHeader gMapHeader = {0};
EWRAM_DATA struct Camera gCamera = {0};
EWRAM_DATA static struct ConnectionFlags gMapConnectionFlags = {0};
EWRAM_DATA static u32 sFiller = 0; // without this, the next file won't align properly
struct BackupMapLayout gBackupMapLayout;
static const struct ConnectionFlags sDummyConnectionFlags = {0};
static void InitMapLayoutData(struct MapHeader *mapHeader);
static void InitBackupMapLayoutData(u16 *map, u16 width, u16 height);
static void FillSouthConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset);
static void FillNorthConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset);
static void FillWestConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset);
static void FillEastConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset);
static void InitBackupMapLayoutConnections(struct MapHeader *mapHeader);
static void LoadSavedMapView(void);
static bool8 SkipCopyingMetatileFromSavedMap(u16* mapMetatilePtr, u16 mapWidth, u8 yMode);
static struct MapConnection *GetIncomingConnection(u8 direction, int x, int y);
static bool8 IsPosInIncomingConnectingMap(u8 direction, int x, int y, struct MapConnection *connection);
static bool8 IsCoordInIncomingConnectingMap(int coord, int srcMax, int destMax, int offset);
#define MapGridGetBorderTileAt(x, y) ({ \
u16 block; \
int i; \
u16 *border = gMapHeader.mapLayout->border; \
\
i = (x + 1) & 1; \
i += ((y + 1) & 1) * 2; \
\
block = gMapHeader.mapLayout->border[i] | METATILE_COLLISION_MASK; \
})
#define AreCoordsWithinMapGridBounds(x, y) (x >= 0 && x < gBackupMapLayout.width && y >= 0 && y < gBackupMapLayout.height)
#define MapGridGetTileAt(x, y) (AreCoordsWithinMapGridBounds(x, y) ? gBackupMapLayout.map[x + gBackupMapLayout.width * y] : MapGridGetBorderTileAt(x, y))
struct MapHeader const *const GetMapHeaderFromConnection(struct MapConnection *connection)
{
return Overworld_GetMapHeaderByGroupAndId(connection->mapGroup, connection->mapNum);
}
void InitMap(void)
{
InitMapLayoutData(&gMapHeader);
SetOccupiedSecretBaseEntranceMetatiles(gMapHeader.events);
RunOnLoadMapScript();
}
void InitMapFromSavedGame(void)
{
InitMapLayoutData(&gMapHeader);
InitSecretBaseAppearance(FALSE);
SetOccupiedSecretBaseEntranceMetatiles(gMapHeader.events);
LoadSavedMapView();
RunOnLoadMapScript();
UpdateTVScreensOnMap(gBackupMapLayout.width, gBackupMapLayout.height);
}
void InitBattlePyramidMap(bool8 setPlayerPosition)
{
CpuFastFill(METATILE_ID_UNDEFINED << 16 | METATILE_ID_UNDEFINED, gBackupMapData, sizeof(gBackupMapData));
GenerateBattlePyramidFloorLayout(gBackupMapData, setPlayerPosition);
}
void InitTrainerHillMap(void)
{
CpuFastFill(METATILE_ID_UNDEFINED << 16 | METATILE_ID_UNDEFINED, gBackupMapData, sizeof(gBackupMapData));
GenerateTrainerHillFloorLayout(gBackupMapData);
}
static void InitMapLayoutData(struct MapHeader *mapHeader)
{
struct MapLayout const *mapLayout;
int width;
int height;
mapLayout = mapHeader->mapLayout;
CpuFastFill16(METATILE_ID_UNDEFINED, gBackupMapData, sizeof(gBackupMapData));
gBackupMapLayout.map = gBackupMapData;
width = mapLayout->width + MAP_OFFSET_W;
gBackupMapLayout.width = width;
height = mapLayout->height + MAP_OFFSET_H;
gBackupMapLayout.height = height;
if (width * height <= MAX_MAP_DATA_SIZE)
{
InitBackupMapLayoutData(mapLayout->map, mapLayout->width, mapLayout->height);
InitBackupMapLayoutConnections(mapHeader);
}
}
static void InitBackupMapLayoutData(u16 *map, u16 width, u16 height)
{
u16 *dest;
int y;
dest = gBackupMapLayout.map;
dest += gBackupMapLayout.width * 7 + MAP_OFFSET;
for (y = 0; y < height; y++)
{
CpuCopy16(map, dest, width * 2);
dest += width + MAP_OFFSET_W;
map += width;
}
}
static void InitBackupMapLayoutConnections(struct MapHeader *mapHeader)
{
int count;
struct MapConnection *connection;
int i;
if (mapHeader->connections)
{
count = mapHeader->connections->count;
connection = mapHeader->connections->connections;
gMapConnectionFlags = sDummyConnectionFlags;
for (i = 0; i < count; i++, connection++)
{
struct MapHeader const *cMap = GetMapHeaderFromConnection(connection);
u32 offset = connection->offset;
switch (connection->direction)
{
case CONNECTION_SOUTH:
FillSouthConnection(mapHeader, cMap, offset);
gMapConnectionFlags.south = TRUE;
break;
case CONNECTION_NORTH:
FillNorthConnection(mapHeader, cMap, offset);
gMapConnectionFlags.north = TRUE;
break;
case CONNECTION_WEST:
FillWestConnection(mapHeader, cMap, offset);
gMapConnectionFlags.west = TRUE;
break;
case CONNECTION_EAST:
FillEastConnection(mapHeader, cMap, offset);
gMapConnectionFlags.east = TRUE;
break;
}
}
}
}
static void FillConnection(int x, int y, struct MapHeader const *connectedMapHeader, int x2, int y2, int width, int height)
{
int i;
u16 *src;
u16 *dest;
int mapWidth;
mapWidth = connectedMapHeader->mapLayout->width;
src = &connectedMapHeader->mapLayout->map[mapWidth * y2 + x2];
dest = &gBackupMapLayout.map[gBackupMapLayout.width * y + x];
for (i = 0; i < height; i++)
{
CpuCopy16(src, dest, width * 2);
dest += gBackupMapLayout.width;
src += mapWidth;
}
}
static void FillSouthConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset)
{
int x, y;
int x2;
int width;
int cWidth;
if (connectedMapHeader)
{
cWidth = connectedMapHeader->mapLayout->width;
x = offset + MAP_OFFSET;
y = mapHeader->mapLayout->height + MAP_OFFSET;
if (x < 0)
{
x2 = -x;
x += cWidth;
if (x < gBackupMapLayout.width)
width = x;
else
width = gBackupMapLayout.width;
x = 0;
}
else
{
x2 = 0;
if (x + cWidth < gBackupMapLayout.width)
width = cWidth;
else
width = gBackupMapLayout.width - x;
}
FillConnection(
x, y,
connectedMapHeader,
x2, /*y2*/ 0,
width, /*height*/ MAP_OFFSET);
}
}
static void FillNorthConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset)
{
int x;
int x2, y2;
int width;
int cWidth, cHeight;
if (connectedMapHeader)
{
cWidth = connectedMapHeader->mapLayout->width;
cHeight = connectedMapHeader->mapLayout->height;
x = offset + MAP_OFFSET;
y2 = cHeight - MAP_OFFSET;
if (x < 0)
{
x2 = -x;
x += cWidth;
if (x < gBackupMapLayout.width)
width = x;
else
width = gBackupMapLayout.width;
x = 0;
}
else
{
x2 = 0;
if (x + cWidth < gBackupMapLayout.width)
width = cWidth;
else
width = gBackupMapLayout.width - x;
}
FillConnection(
x, /*y*/ 0,
connectedMapHeader,
x2, y2,
width, /*height*/ MAP_OFFSET);
}
}
static void FillWestConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset)
{
int y;
int x2, y2;
int height;
int cWidth, cHeight;
if (connectedMapHeader)
{
cWidth = connectedMapHeader->mapLayout->width;
cHeight = connectedMapHeader->mapLayout->height;
y = offset + MAP_OFFSET;
x2 = cWidth - MAP_OFFSET;
if (y < 0)
{
y2 = -y;
if (y + cHeight < gBackupMapLayout.height)
height = y + cHeight;
else
height = gBackupMapLayout.height;
y = 0;
}
else
{
y2 = 0;
if (y + cHeight < gBackupMapLayout.height)
height = cHeight;
else
height = gBackupMapLayout.height - y;
}
FillConnection(
/*x*/ 0, y,
connectedMapHeader,
x2, y2,
/*width*/ MAP_OFFSET, height);
}
}
static void FillEastConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset)
{
int x, y;
int y2;
int height;
int cHeight;
if (connectedMapHeader)
{
cHeight = connectedMapHeader->mapLayout->height;
x = mapHeader->mapLayout->width + MAP_OFFSET;
y = offset + MAP_OFFSET;
if (y < 0)
{
y2 = -y;
if (y + cHeight < gBackupMapLayout.height)
height = y + cHeight;
else
height = gBackupMapLayout.height;
y = 0;
}
else
{
y2 = 0;
if (y + cHeight < gBackupMapLayout.height)
height = cHeight;
else
height = gBackupMapLayout.height - y;
}
FillConnection(
x, y,
connectedMapHeader,
/*x2*/ 0, y2,
/*width*/ MAP_OFFSET + 1, height);
}
}
u8 MapGridGetZCoordAt(int x, int y)
{
u16 block = MapGridGetTileAt(x, y);
if (block == METATILE_ID_UNDEFINED)
return 0;
return block >> METATILE_ELEVATION_SHIFT;
}
bool8 MapGridIsImpassableAt(int x, int y)
{
u16 block = MapGridGetTileAt(x, y);
if (block == METATILE_ID_UNDEFINED)
return TRUE;
return (block & METATILE_COLLISION_MASK) >> METATILE_COLLISION_SHIFT;
}
u32 MapGridGetMetatileIdAt(int x, int y)
{
u16 block = MapGridGetTileAt(x, y);
if (block == METATILE_ID_UNDEFINED)
return MapGridGetBorderTileAt(x, y) & METATILE_ID_MASK;
return block & METATILE_ID_MASK;
}
u32 MapGridGetMetatileBehaviorAt(int x, int y)
{
u16 metatile = MapGridGetMetatileIdAt(x, y);
return GetBehaviorByMetatileId(metatile) & METATILE_BEHAVIOR_MASK;
}
u8 MapGridGetMetatileLayerTypeAt(int x, int y)
{
u16 metatile = MapGridGetMetatileIdAt(x, y);
return (GetBehaviorByMetatileId(metatile) & METATILE_ELEVATION_MASK) >> METATILE_ELEVATION_SHIFT;
}
void MapGridSetMetatileIdAt(int x, int y, u16 metatile)
{
int i;
if (AreCoordsWithinMapGridBounds(x, y))
{
i = x + y * gBackupMapLayout.width;
gBackupMapLayout.map[i] = (gBackupMapLayout.map[i] & METATILE_ELEVATION_MASK) | (metatile & ~METATILE_ELEVATION_MASK);
}
}
void MapGridSetMetatileEntryAt(int x, int y, u16 metatile)
{
int i;
if (AreCoordsWithinMapGridBounds(x, y))
{
i = x + gBackupMapLayout.width * y;
gBackupMapLayout.map[i] = metatile;
}
}
u16 GetBehaviorByMetatileId(u16 metatile)
{
u16 *attributes;
if (metatile < NUM_METATILES_IN_PRIMARY)
{
attributes = gMapHeader.mapLayout->primaryTileset->metatileAttributes;
return attributes[metatile];
}
else if (metatile < NUM_METATILES_TOTAL)
{
attributes = gMapHeader.mapLayout->secondaryTileset->metatileAttributes;
return attributes[metatile - NUM_METATILES_IN_PRIMARY];
}
else
{
return MB_INVALID;
}
}
void SaveMapView(void)
{
int i, j;
int x, y;
u16 *mapView;
int width;
mapView = gSaveBlock1Ptr->mapView;
width = gBackupMapLayout.width;
x = gSaveBlock1Ptr->pos.x;
y = gSaveBlock1Ptr->pos.y;
for (i = y; i < y + MAP_OFFSET_H; i++)
{
for (j = x; j < x + MAP_OFFSET_W; j++)
*mapView++ = gBackupMapData[width * i + j];
}
}
static bool32 SavedMapViewIsEmpty(void)
{
u16 i;
u32 marker = 0;
#ifndef UBFIX
// BUG: This loop extends past the bounds of the mapView array. Its size is only 0x100.
for (i = 0; i < 0x200; i++)
marker |= gSaveBlock1Ptr->mapView[i];
#else
// UBFIX: Only iterate over 0x100
for (i = 0; i < ARRAY_COUNT(gSaveBlock1Ptr->mapView); i++)
marker |= gSaveBlock1Ptr->mapView[i];
#endif
if (marker == 0)
return TRUE;
else
return FALSE;
}
static void ClearSavedMapView(void)
{
CpuFill16(0, gSaveBlock1Ptr->mapView, sizeof(gSaveBlock1Ptr->mapView));
}
static void LoadSavedMapView(void)
{
u8 yMode;
int i, j;
int x, y;
u16 *mapView;
int width;
mapView = gSaveBlock1Ptr->mapView;
if (!SavedMapViewIsEmpty())
{
width = gBackupMapLayout.width;
x = gSaveBlock1Ptr->pos.x;
y = gSaveBlock1Ptr->pos.y;
for (i = y; i < y + MAP_OFFSET_H; i++)
{
if (i == y && i != 0)
yMode = 0;
else if (i == y + MAP_OFFSET_H - 1 && i != gMapHeader.mapLayout->height - 1)
yMode = 1;
else
yMode = 0xFF;
for (j = x; j < x + MAP_OFFSET_W; j++)
{
if (!SkipCopyingMetatileFromSavedMap(&gBackupMapData[j + width * i], width, yMode))
gBackupMapData[j + width * i] = *mapView;
mapView++;
}
}
for (j = x; j < x + MAP_OFFSET_W; j++)
{
if (y != 0)
FixLongGrassMetatilesWindowTop(j, y - 1);
if (i < gMapHeader.mapLayout->height - 1)
FixLongGrassMetatilesWindowBottom(j, y + MAP_OFFSET_H - 1);
}
ClearSavedMapView();
}
}
static void MoveMapViewToBackup(u8 direction)
{
int width;
u16 *mapView;
int x0, y0;
int x2, y2;
u16 *src, *dest;
int srci, desti;
int r9, r8;
int x, y;
int i, j;
mapView = gSaveBlock1Ptr->mapView;
width = gBackupMapLayout.width;
r9 = 0;
r8 = 0;
x0 = gSaveBlock1Ptr->pos.x;
y0 = gSaveBlock1Ptr->pos.y;
x2 = MAP_OFFSET_W;
y2 = MAP_OFFSET_H;
switch (direction)
{
case CONNECTION_NORTH:
y0 += 1;
y2 = MAP_OFFSET_H - 1;
break;
case CONNECTION_SOUTH:
r8 = 1;
y2 = MAP_OFFSET_H - 1;
break;
case CONNECTION_WEST:
x0 += 1;
x2 = MAP_OFFSET_W - 1;
break;
case CONNECTION_EAST:
r9 = 1;
x2 = MAP_OFFSET_W - 1;
break;
}
for (y = 0; y < y2; y++)
{
i = 0;
j = 0;
for (x = 0; x < x2; x++)
{
desti = width * (y + y0);
srci = (y + r8) * MAP_OFFSET_W + r9;
src = &mapView[srci + i];
dest = &gBackupMapData[x0 + desti + j];
*dest = *src;
i++;
j++;
}
}
ClearSavedMapView();
}
int GetMapBorderIdAt(int x, int y)
{
if (MapGridGetTileAt(x, y) == METATILE_ID_UNDEFINED)
return CONNECTION_INVALID;
if (x >= (gBackupMapLayout.width - (MAP_OFFSET + 1)))
{
if (!gMapConnectionFlags.east)
return CONNECTION_INVALID;
return CONNECTION_EAST;
}
else if (x < MAP_OFFSET)
{
if (!gMapConnectionFlags.west)
return CONNECTION_INVALID;
return CONNECTION_WEST;
}
else if (y >= (gBackupMapLayout.height - MAP_OFFSET))
{
if (!gMapConnectionFlags.south)
return CONNECTION_INVALID;
return CONNECTION_SOUTH;
}
else if (y < MAP_OFFSET)
{
if (!gMapConnectionFlags.north)
return CONNECTION_INVALID;
return CONNECTION_NORTH;
}
else
{
return CONNECTION_NONE;
}
}
int GetPostCameraMoveMapBorderId(int x, int y)
{
return GetMapBorderIdAt(gSaveBlock1Ptr->pos.x + MAP_OFFSET + x, gSaveBlock1Ptr->pos.y + MAP_OFFSET + y);
}
bool32 CanCameraMoveInDirection(int direction)
{
int x, y;
x = gSaveBlock1Ptr->pos.x + MAP_OFFSET + gDirectionToVectors[direction].x;
y = gSaveBlock1Ptr->pos.y + MAP_OFFSET + gDirectionToVectors[direction].y;
if (GetMapBorderIdAt(x, y) == CONNECTION_INVALID)
return FALSE;
return TRUE;
}
static void SetPositionFromConnection(struct MapConnection *connection, int direction, int x, int y)
{
struct MapHeader const *mapHeader;
mapHeader = GetMapHeaderFromConnection(connection);
switch (direction)
{
case CONNECTION_EAST:
gSaveBlock1Ptr->pos.x = -x;
gSaveBlock1Ptr->pos.y -= connection->offset;
break;
case CONNECTION_WEST:
gSaveBlock1Ptr->pos.x = mapHeader->mapLayout->width;
gSaveBlock1Ptr->pos.y -= connection->offset;
break;
case CONNECTION_SOUTH:
gSaveBlock1Ptr->pos.x -= connection->offset;
gSaveBlock1Ptr->pos.y = -y;
break;
case CONNECTION_NORTH:
gSaveBlock1Ptr->pos.x -= connection->offset;
gSaveBlock1Ptr->pos.y = mapHeader->mapLayout->height;
break;
}
}
bool8 CameraMove(int x, int y)
{
int direction;
struct MapConnection *connection;
int old_x, old_y;
gCamera.active = FALSE;
direction = GetPostCameraMoveMapBorderId(x, y);
if (direction == CONNECTION_NONE || direction == CONNECTION_INVALID)
{
gSaveBlock1Ptr->pos.x += x;
gSaveBlock1Ptr->pos.y += y;
}
else
{
SaveMapView();
ClearMirageTowerPulseBlendEffect();
old_x = gSaveBlock1Ptr->pos.x;
old_y = gSaveBlock1Ptr->pos.y;
connection = GetIncomingConnection(direction, gSaveBlock1Ptr->pos.x, gSaveBlock1Ptr->pos.y);
SetPositionFromConnection(connection, direction, x, y);
LoadMapFromCameraTransition(connection->mapGroup, connection->mapNum);
gCamera.active = TRUE;
gCamera.x = old_x - gSaveBlock1Ptr->pos.x;
gCamera.y = old_y - gSaveBlock1Ptr->pos.y;
gSaveBlock1Ptr->pos.x += x;
gSaveBlock1Ptr->pos.y += y;
MoveMapViewToBackup(direction);
}
return gCamera.active;
}
static struct MapConnection *GetIncomingConnection(u8 direction, int x, int y)
{
int count;
int i;
struct MapConnection *connection;
const struct MapConnections *connections = gMapHeader.connections;
#ifdef UBFIX // UB: Multiple possible null dereferences
if (connections == NULL || connections->connections == NULL)
return NULL;
#endif
count = connections->count;
connection = connections->connections;
for (i = 0; i < count; i++, connection++)
{
if (connection->direction == direction && IsPosInIncomingConnectingMap(direction, x, y, connection) == TRUE)
return connection;
}
return NULL;
}
static bool8 IsPosInIncomingConnectingMap(u8 direction, int x, int y, struct MapConnection *connection)
{
struct MapHeader const *mapHeader;
mapHeader = GetMapHeaderFromConnection(connection);
switch (direction)
{
case CONNECTION_SOUTH:
case CONNECTION_NORTH:
return IsCoordInIncomingConnectingMap(x, gMapHeader.mapLayout->width, mapHeader->mapLayout->width, connection->offset);
case CONNECTION_WEST:
case CONNECTION_EAST:
return IsCoordInIncomingConnectingMap(y, gMapHeader.mapLayout->height, mapHeader->mapLayout->height, connection->offset);
}
return FALSE;
}
static bool8 IsCoordInIncomingConnectingMap(int coord, int srcMax, int destMax, int offset)
{
int offset2;
offset2 = offset;
if (offset2 < 0)
offset2 = 0;
if (destMax + offset < srcMax)
srcMax = destMax + offset;
if (offset2 <= coord && coord <= srcMax)
return TRUE;
return FALSE;
}
static int IsCoordInConnectingMap(int coord, int max)
{
if (coord >= 0 && coord < max)
return TRUE;
return FALSE;
}
static int IsPosInConnectingMap(struct MapConnection *connection, int x, int y)
{
struct MapHeader const *mapHeader;
mapHeader = GetMapHeaderFromConnection(connection);
switch (connection->direction)
{
case CONNECTION_SOUTH:
case CONNECTION_NORTH:
return IsCoordInConnectingMap(x - connection->offset, mapHeader->mapLayout->width);
case CONNECTION_WEST:
case CONNECTION_EAST:
return IsCoordInConnectingMap(y - connection->offset, mapHeader->mapLayout->height);
}
return FALSE;
}
struct MapConnection *GetConnectionAtCoords(s16 x, s16 y)
{
int count;
struct MapConnection *connection;
int i;
u8 direction;
if (!gMapHeader.connections)
{
return NULL;
}
else
{
count = gMapHeader.connections->count;
connection = gMapHeader.connections->connections;
for (i = 0; i < count; i++, connection++)
{
direction = connection->direction;
if ((direction == CONNECTION_DIVE || direction == CONNECTION_EMERGE)
|| (direction == CONNECTION_NORTH && y > MAP_OFFSET - 1)
|| (direction == CONNECTION_SOUTH && y < gMapHeader.mapLayout->height + MAP_OFFSET)
|| (direction == CONNECTION_WEST && x > MAP_OFFSET - 1)
|| (direction == CONNECTION_EAST && x < gMapHeader.mapLayout->width + MAP_OFFSET))
{
continue;
}
if (IsPosInConnectingMap(connection, x - MAP_OFFSET, y - MAP_OFFSET) == TRUE)
{
return connection;
}
}
}
return NULL;
}
void SetCameraFocusCoords(u16 x, u16 y)
{
gSaveBlock1Ptr->pos.x = x - MAP_OFFSET;
gSaveBlock1Ptr->pos.y = y - MAP_OFFSET;
}
void GetCameraFocusCoords(u16 *x, u16 *y)
{
*x = gSaveBlock1Ptr->pos.x + MAP_OFFSET;
*y = gSaveBlock1Ptr->pos.y + MAP_OFFSET;
}
// Unused
static void SetCameraCoords(u16 x, u16 y)
{
gSaveBlock1Ptr->pos.x = x;
gSaveBlock1Ptr->pos.y = y;
}
void GetCameraCoords(u16 *x, u16 *y)
{
*x = gSaveBlock1Ptr->pos.x;
*y = gSaveBlock1Ptr->pos.y;
}
void MapGridSetMetatileImpassabilityAt(int x, int y, bool32 impassable)
{
if (AreCoordsWithinMapGridBounds(x, y))
{
if (impassable)
gBackupMapLayout.map[x + gBackupMapLayout.width * y] |= METATILE_COLLISION_MASK;
else
gBackupMapLayout.map[x + gBackupMapLayout.width * y] &= ~METATILE_COLLISION_MASK;
}
}
static bool8 SkipCopyingMetatileFromSavedMap(u16* mapMetatilePtr, u16 mapWidth, u8 yMode)
{
if (yMode == 0xFF)
return FALSE;
if (yMode == 0)
mapMetatilePtr -= mapWidth;
else
mapMetatilePtr += mapWidth;
if (IsLargeBreakableDecoration(*mapMetatilePtr & METATILE_ID_MASK, yMode) == TRUE)
return TRUE;
return FALSE;
}
static void CopyTilesetToVram(struct Tileset const *tileset, u16 numTiles, u16 offset)
{
if (tileset)
{
if (!tileset->isCompressed)
LoadBgTiles(2, tileset->tiles, numTiles * 32, offset);
else
DecompressAndCopyTileDataToVram(2, tileset->tiles, numTiles * 32, offset, 0);
}
}
static void CopyTilesetToVramUsingHeap(struct Tileset const *tileset, u16 numTiles, u16 offset)
{
if (tileset)
{
if (!tileset->isCompressed)
LoadBgTiles(2, tileset->tiles, numTiles * 32, offset);
else
DecompressAndLoadBgGfxUsingHeap(2, tileset->tiles, numTiles * 32, offset, 0);
}
}
static void FieldmapPaletteDummy(u16 offset, u16 size)
{
}
static void FieldmapUnkDummy(void)
{
}
void LoadTilesetPalette(struct Tileset const *tileset, u16 destOffset, u16 size)
{
u16 black = RGB_BLACK;
if (tileset)
{
if (tileset->isSecondary == FALSE)
{
LoadPalette(&black, destOffset, 2);
LoadPalette(((u16*)tileset->palettes) + 1, destOffset + 1, size - 2);
FieldmapPaletteDummy(destOffset + 1, (size - 2) >> 1);
}
else if (tileset->isSecondary == TRUE)
{
LoadPalette(((u16*)tileset->palettes) + (NUM_PALS_IN_PRIMARY * 16), destOffset, size);
FieldmapPaletteDummy(destOffset, size >> 1);
}
else
{
LoadCompressedPalette((u32*)tileset->palettes, destOffset, size);
FieldmapPaletteDummy(destOffset, size >> 1);
}
}
}
void CopyPrimaryTilesetToVram(struct MapLayout const *mapLayout)
{
CopyTilesetToVram(mapLayout->primaryTileset, NUM_TILES_IN_PRIMARY, 0);
}
void CopySecondaryTilesetToVram(struct MapLayout const *mapLayout)
{
CopyTilesetToVram(mapLayout->secondaryTileset, NUM_TILES_TOTAL - NUM_TILES_IN_PRIMARY, NUM_TILES_IN_PRIMARY);
}
void CopySecondaryTilesetToVramUsingHeap(struct MapLayout const *mapLayout)
{
CopyTilesetToVramUsingHeap(mapLayout->secondaryTileset, NUM_TILES_TOTAL - NUM_TILES_IN_PRIMARY, NUM_TILES_IN_PRIMARY);
}
static void LoadPrimaryTilesetPalette(struct MapLayout const *mapLayout)
{
LoadTilesetPalette(mapLayout->primaryTileset, 0, NUM_PALS_IN_PRIMARY * 16 * 2);
}
void LoadSecondaryTilesetPalette(struct MapLayout const *mapLayout)
{
LoadTilesetPalette(mapLayout->secondaryTileset, NUM_PALS_IN_PRIMARY * 16, (NUM_PALS_TOTAL - NUM_PALS_IN_PRIMARY) * 16 * 2);
}
void CopyMapTilesetsToVram(struct MapLayout const *mapLayout)
{
if (mapLayout)
{
CopyTilesetToVramUsingHeap(mapLayout->primaryTileset, NUM_TILES_IN_PRIMARY, 0);
CopyTilesetToVramUsingHeap(mapLayout->secondaryTileset, NUM_TILES_TOTAL - NUM_TILES_IN_PRIMARY, NUM_TILES_IN_PRIMARY);
}
}
void LoadMapTilesetPalettes(struct MapLayout const *mapLayout)
{
if (mapLayout)
{
LoadPrimaryTilesetPalette(mapLayout);
LoadSecondaryTilesetPalette(mapLayout);
}
}