[[Category Packet]] [[Category Packet 377]] {{packet|name=Construct Map Region|description=Creates a map region.|opcode=53|type=Variable Short|length=N/A|revision=377}} == Interface Animation ==

=== Description === Sets the animation for a model on an interface.

=== Packet Structure ===

{| border=2 ! Data type ! Description |- | [[Data Types#Non Standard Data Types|Big Endian]] [[Data Types#Standard data types|Short]] [[Data Types#Non Standard Data Types|Special A]] | Map Region Y (absolute Y coordinate / 8 + 6) |- | [[Data Types#Standard data types|Bit Block]] | 1 bit (0 or 1) to decide if a tile exists. 26 bits for data about the tile (only if it exists) |- | [[Data Types#Non Standard Data Types|Big Endian]] [[Data Types#Standard data types|Short]] [[Data Types#Non Standard Data Types|Special A]] | Map Region X (absolute X coordinate / 8 + 6) |- |}

=== Information ===

If the tile exists then a 1 gets written to the output stream as a 1 otherwise a zero gets written to the stream.

If the tile does exist then you would follow that 1 bit with 26 bits of information about the tile.

int info = inStream.readBits(26); int heightLevel = info >> 24 & 3; int rotation = info >> 1 & 3; int regionX = info >> 14 & 0x3ff; int regionY = info >> 3 & 0x7ff;

=== Implementation ===

for(int z = 0; z < 4; z++) { for(int x = 0; x < 13; x++) { for(int y = 0; y < 13; y++) { outStream.writeBit(1, tileExists ? 1 : 0); if(tileExists) outStream.writeBits(26, TILE_INFORMATION); } } }