diff options
Diffstat (limited to 'src/fieldmap.c')
| -rw-r--r-- | src/fieldmap.c | 284 |
1 files changed, 283 insertions, 1 deletions
diff --git a/src/fieldmap.c b/src/fieldmap.c index f9b3ad897..a78b7189c 100644 --- a/src/fieldmap.c +++ b/src/fieldmap.c @@ -3,13 +3,29 @@ #include "script.h" #include "fieldmap.h" +struct ConnectionFlags +{ + u8 south:1; + u8 north:1; + u8 west:1; + u8 east:1; +}; + void sub_8058A00(struct MapHeader *mapHeader); void map_copy_with_padding(u16 *map, u16 width, u16 height); void mapheader_copy_mapdata_of_adjacent_maps(struct MapHeader *mapHeader); +void fillSouthConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset); +void fillNorthConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset); +void fillWestConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset); +void fillEastConnection(struct MapHeader const *mapHeader, struct MapHeader const *connectedMapHeader, s32 offset); void sub_80591C4(void); struct BackupMapData VMap; -EWRAM_DATA u16 gBackupMapData[VIRTUAL_MAP_SIZE]; +EWRAM_DATA u16 gBackupMapData[VIRTUAL_MAP_SIZE] = {}; +EWRAM_DATA struct MapHeader gMapHeader = {}; +EWRAM_DATA struct ConnectionFlags gMapConnectionFlags = {}; + +extern const struct ConnectionFlags sDummyConnectionFlags; const struct MapHeader * mapconnection_get_mapheader(struct MapConnection * connection) { @@ -40,3 +56,269 @@ void sub_8058A00(struct MapHeader * mapHeader) map_copy_with_padding(mapData->map, mapData->width, mapData->height); mapheader_copy_mapdata_of_adjacent_maps(mapHeader); } + +void map_copy_with_padding(u16 *map, u16 width, u16 height) +{ + s32 y; + u16 *dest = VMap.map; + dest += VMap.Xsize * 7 + 7; + + for (y = 0; y < height; y++) + { + CpuCopy16(map, dest, width * sizeof(u16)); + dest += width + 15; + map += width; + } +} + +void mapheader_copy_mapdata_of_adjacent_maps(struct MapHeader *mapHeader) +{ + int count; + struct MapConnection *connection; + int i; + + gMapConnectionFlags = sDummyConnectionFlags; + + /* + * This null pointer check is new to FireRed. It was kept in + * Emerald, with the above struct assignment moved to after + * this check. + */ + if (mapHeader->connections) + { + count = mapHeader->connections->count; + connection = mapHeader->connections->connections; + // Emerald puts this line here instead: + // gMapConnectionFlags = sDummyConnectionFlags; + for (i = 0; i < count; i++, connection++) + { + struct MapHeader const *cMap = mapconnection_get_mapheader(connection); + u32 offset = connection->offset; + switch (connection->direction) + { + case CONNECTION_SOUTH: + fillSouthConnection(mapHeader, cMap, offset); + gMapConnectionFlags.south = 1; + break; + case CONNECTION_NORTH: + fillNorthConnection(mapHeader, cMap, offset); + gMapConnectionFlags.north = 1; + break; + case CONNECTION_WEST: + fillWestConnection(mapHeader, cMap, offset); + gMapConnectionFlags.west = 1; + break; + case CONNECTION_EAST: + fillEastConnection(mapHeader, cMap, offset); + gMapConnectionFlags.east = 1; + break; + } + } + } +} + +void sub_8058B54(s32 x, s32 y, const struct MapHeader *connectedMapHeader, s32 x2, s32 y2, s32 width, s32 height) +{ + int i; + u16 *src; + u16 *dest; + int mapWidth; + + mapWidth = connectedMapHeader->mapData->width; + src = &connectedMapHeader->mapData->map[mapWidth * y2 + x2]; + dest = &VMap.map[VMap.Xsize * y + x]; + + for (i = 0; i < height; i++) + { + CpuCopy16(src, dest, width * 2); + dest += VMap.Xsize; + src += mapWidth; + } +} + +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->mapData->width; + x = offset + 7; + y = mapHeader->mapData->height + 7; + if (x < 0) + { + x2 = -x; + x += cWidth; + if (x < VMap.Xsize) + { + width = x; + } + else + { + width = VMap.Xsize; + } + x = 0; + } + else + { + x2 = 0; + if (x + cWidth < VMap.Xsize) + { + width = cWidth; + } + else + { + width = VMap.Xsize - x; + } + } + + sub_8058B54( + x, y, + connectedMapHeader, + x2, /*y2*/ 0, + width, /*height*/ 7); + } +} + +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->mapData->width; + cHeight = connectedMapHeader->mapData->height; + x = offset + 7; + y2 = cHeight - 7; + if (x < 0) + { + x2 = -x; + x += cWidth; + if (x < VMap.Xsize) + { + width = x; + } + else + { + width = VMap.Xsize; + } + x = 0; + } + else + { + x2 = 0; + if (x + cWidth < VMap.Xsize) + { + width = cWidth; + } + else + { + width = VMap.Xsize - x; + } + } + + sub_8058B54( + x, /*y*/ 0, + connectedMapHeader, + x2, y2, + width, /*height*/ 7); + + } +} + +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->mapData->width; + cHeight = connectedMapHeader->mapData->height; + y = offset + 7; + x2 = cWidth - 7; + if (y < 0) + { + y2 = -y; + if (y + cHeight < VMap.Ysize) + { + height = y + cHeight; + } + else + { + height = VMap.Ysize; + } + y = 0; + } + else + { + y2 = 0; + if (y + cHeight < VMap.Ysize) + { + height = cHeight; + } + else + { + height = VMap.Ysize - y; + } + } + + sub_8058B54( + /*x*/ 0, y, + connectedMapHeader, + x2, y2, + /*width*/ 7, height); + } +} + +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->mapData->height; + x = mapHeader->mapData->width + 7; + y = offset + 7; + if (y < 0) + { + y2 = -y; + if (y + cHeight < VMap.Ysize) + { + height = y + cHeight; + } + else + { + height = VMap.Ysize; + } + y = 0; + } + else + { + y2 = 0; + if (y + cHeight < VMap.Ysize) + { + height = cHeight; + } + else + { + height = VMap.Ysize - y; + } + } + + sub_8058B54( + x, y, + connectedMapHeader, + /*x2*/ 0, y2, + /*width*/ 8, height); + } +} |