Water.extm: Difference between revisions
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Fixed some typos and added water material map image.
imported>Zephenryus (Added file specification for water.extm files) |
imported>Zephenryus (Fixed some typos and added water material map image.) |
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<onlyinclude> | <onlyinclude> | ||
[[File:5000000000.water.extm.png|alt=Generated water material map of Hyrule Main Field|thumb|Generated water material map of Hyrule Main Field]] | |||
<code>water.extm</code> files describe the water heightmap and the texture of the main field and add-on content field. | <code>water.extm</code> files describe the water heightmap and the texture of the main field and add-on content field. | ||
</onlyinclude> | </onlyinclude> | ||
== water.extm File Specification == | == water.extm File Specification == | ||
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<code>height</code> and <code>flowSpeed</code> are stored as unsigned shorts, but seem to map to float values. These can be calculated by dividing by the max size of an unsigned short: | <code>height</code> and <code>flowSpeed</code> are stored as unsigned shorts, but seem to map to float values. These can be calculated by dividing by the max size of an unsigned short: | ||
<syntaxhighlight lang="c" line= | <syntaxhighlight lang="c" line="line"> | ||
32767 / 0xffff = 0.5 | 32767 / 0xffff = 0.5 | ||
</syntaxhighlight> | </syntaxhighlight> | ||
<code>height</code> is | <code>height</code> is further multiplied by another constant to get the final height (the constant is unknown at this time, but is close to <code>0x300 / 0xffff</code>). | ||
<code>x</code> and <code>z</code><ref><code>z</code> is expected to be an integer quotient. The <code>floor</code> function can be used if integer division is not supported.</ref> can be calculated, while iterating through the data table: | <code>x</code> and <code>z</code><ref><code>z</code> is expected to be an integer quotient. The <code>floor</code> function can be used if integer division is not supported.</ref> can be calculated, while iterating through the data table: | ||
<syntaxhighlight lang="c" line= | <syntaxhighlight lang="c" line="line"> | ||
for (int index = 0; index < 256 * 256; index++) { | for (int index = 0; index < 256 * 256; index++) { | ||
uint x = index % 256; | uint x = index % 256; | ||