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Mapdev:SMT format - Revision history
2026-04-21T05:43:54Z
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interwiki>Flozi: categorise
2013-10-26T21:16:17Z
<p>categorise</p>
<p><b>New page</b></p><div>= SMT(Spring Tile File) Reference =<br />
SMT is a binary format<br />
* [https://github.com/spring/spring/tree/master/rts/Map/SMF Relevant code]<br />
<br />
== File location ==<br />
maparchive.sd7/maps/filename.smt<br />
<br />
== Data Map ==<br />
{| class="wikitable" width="100%"<br />
|+ align="left" | Header<br />
! style="width: 20%" | Bytes<br />
! style="width: 20%" | Type !! Description<br />
|-<br />
| 16 || <code>char[]</code> || Magic number; "spring tilefile\0"<br />
|-<br />
| 4 || <code>int</code> || Version; 1<br />
|-<br />
| 4 || <code>int</code> || Number of tiles<br />
|-<br />
| 4 || <code>int</code> || Size of the tiles; 32<br />
|-<br />
| 4 || <code>int</code> || Compression Type; 1(DXT1)<br />
|}<br />
<br />
{| class="wikitable" width="100%"<br />
|+ align="left" | + Tiles<br />
! style="width: 20%" | Bytes<br />
! style="width: 20%" | Type !! Description<br />
|-<br />
| 680* || <code>char[]</code> || Raw DXT1 compressed 32x32 pixel tiles with 4 mip levels.<br />
|}<br />
* <br />
* <br />
*<br />
<br />
: * dxt1 compression is consistent at 8 Bytes per 4x4 block of pixels. so for 4 mip levels (32x32, 16x16, 8x8, 4x4) we get 512 + 128 + 32 + 8 = 680 Bytes.<br />
<br />
[[Category:Map Dev]]</div>
interwiki>Flozi