Slick Forums

Hi there,

Tiled supports flipping and rotating tiles, but those tiles are not displayed at all in Slick. Tiled encodes this information in the Most significant bits of the Tile Id, so any Loader unaware of this will not find the Tiles.

I have patched Slick to read and correctly display flipped and rotated tiles:
In some parts the code is not the cleanest, but it works.

Layer.getTileId still returns the Tile Id with the Flipping Bits set. Whether this is desirable needs to be discussed.

Implementation details: I decided not to cache the Flipping/Rotating booleans but to parse them out of the Id when the Tile needs to be rendered, because the performance gains would only be minimal, compared to a huge increase in memory usage.



Greetings,
Wilson

Thanks for this @Wilson, I've merged this into my local repo and will be in the main branch soon. Could I ask, what are the different byte values for different transforms in your new drawEmbedded method?

e.g. what byte value is for rotate, flipX and flipY.

_________________
Liam (liamzebedee) Edwards-Playne
Cryptum

The least significant bit (0x01) is Rotation, or to be more specific flipping the top left corner with the bottom right.
The second least significant bit (0x02) is Flip Y.
The third least significant bit (0x04) is Flip X.

It is the exact same thing TilED is doing, only shifted 29 bits to the right.

Example:
To rotate 90° clockwise you would set the rotation bit and the Flip Y bit. (If i am not mistaken )