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<a href='https://github.com/akkartik/mu/blob/master/apps/tile.mu'>https://github.com/akkartik/mu/blob/master/apps/tile.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># little example program: animate a line in text-mode</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment"># To run (on Linux and x86):</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment"># $ git clone <a href="https://github.com/akkartik/mu">https://github.com/akkartik/mu</a></span>
<span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ cd mu</span>
<span id="L6" class="LineNr"> 6 </span><span class="Comment"># $ ./translate_mu apps/tile.mu</span>
<span id="L7" class="LineNr"> 7 </span><span class="Comment"># $ ./a.elf</span>
<span id="L8" class="LineNr"> 8 </span><span class="Comment"># You should see a line drawn on a blank screen. Press a key. You should see</span>
<span id="L9" class="LineNr"> 9 </span><span class="Comment"># the line seem to fall down the screen. Press a second key to quit.</span>
<span id="L10" class="LineNr">10 </span><span class="Comment"># <a href="https://archive.org/details/akkartik-2min-2020-07-01">https://archive.org/details/akkartik-2min-2020-07-01</a></span>
<span id="L11" class="LineNr">11 </span>
<span id="L12" class="LineNr">12 </span><span class="PreProc">fn</span> <span class="muFunction">main</span><span class="PreProc"> -> </span>exit-status/<span class="Constant">ebx</span>: int <span class="Delimiter">{</span>
<span id="L13" class="LineNr">13 </span> <a href='../103screen.subx.html#L75'>clear-screen</a>
<span id="L14" class="LineNr">14 </span> <a href='../103screen.subx.html#L91'>move-cursor-on-screen</a> <span class="Constant">5</span>, <span class="Constant">5</span>
<span id="L15" class="LineNr">15 </span> <a href='../103screen.subx.html#L122'>print-string-to-screen</a> <span class="Constant">"_________"</span>
<span id="L16" class="LineNr">16 </span> <a href='../104keyboard.subx.html#L6'>enable-keyboard-immediate-mode</a>
<span id="L17" class="LineNr">17 </span> <span class="PreProc">var</span> dummy/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='../104keyboard.subx.html#L122'>read-key</a>
<span id="L18" class="LineNr">18 </span> <span class="PreProc">var</span> row/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">5</span>
<span id="L19" class="LineNr">19 </span> <span class="Delimiter">{</span>
<span id="L20" class="LineNr">20 </span> compare row, <span class="Constant">0xe</span> <span class="Comment"># 15</span>
<span id="L21" class="LineNr">21 </span> <span class="PreProc">break-if-=</span>
<span id="L22" class="LineNr">22 </span> <a href='tile.mu.html#L33'>animate</a> row
<span id="L23" class="LineNr">23 </span> row <span class="SpecialChar"><-</span> increment
<span id="L24" class="LineNr">24 </span> <a href='tile.mu.html#L56'>sleep</a> <span class="Constant">0</span> <span class="Constant">0x5f5e100</span> <span class="Comment"># 100ms</span>
<span id="L25" class="LineNr">25 </span> <span class="PreProc">loop</span>
<span id="L26" class="LineNr">26 </span> <span class="Delimiter">}</span>
<span id="L27" class="LineNr">27 </span> <span class="PreProc">var</span> dummy/<span class="Constant">eax</span>: byte <span class="SpecialChar"><-</span> <a href='../104keyboard.subx.html#L122'>read-key</a>
<span id="L28" class="LineNr">28 </span> <a href='../104keyboard.subx.html#L72'>enable-keyboard-type-mode</a>
<span id="L29" class="LineNr">29 </span> <a href='../103screen.subx.html#L75'>clear-screen</a>
<span id="L30" class="LineNr">30 </span> exit-status <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L31" class="LineNr">31 </span><span class="Delimiter">}</span>
<span id="L32" class="LineNr">32 </span>
<span id="L33" class="LineNr">33 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='tile.mu.html#L33'>animate</a></span> row: int <span class="Delimiter">{</span>
<span id="L34" class="LineNr">34 </span> <span class="PreProc">var</span> col/<span class="Constant">eax</span>: int <span class="SpecialChar"><-</span> copy <span class="Constant">5</span>
<span id="L35" class="LineNr">35 </span> <span class="Delimiter">{</span>
<span id="L36" class="LineNr">36 </span> compare col, <span class="Constant">0xe</span>
<span id="L37" class="LineNr">37 </span> <span class="PreProc">break-if-=</span>
<span id="L38" class="LineNr">38 </span> <a href='../103screen.subx.html#L91'>move-cursor-on-screen</a> row, col
<span id="L39" class="LineNr">39 </span> <a href='../103screen.subx.html#L122'>print-string-to-screen</a> <span class="Constant">" "</span>
<span id="L40" class="LineNr">40 </span> increment row
<span id="L41" class="LineNr">41 </span> <a href='../103screen.subx.html#L91'>move-cursor-on-screen</a> row, col
<span id="L42" class="LineNr">42 </span> <a href='../103screen.subx.html#L122'>print-string-to-screen</a> <span class="Constant">"_"</span>
<span id="L43" class="LineNr">43 </span> decrement row
<span id="L44" class="LineNr">44 </span> col <span class="SpecialChar"><-</span> increment
<span id="L45" class="LineNr">45 </span> <span class="PreProc">loop</span>
<span id="L46" class="LineNr">46 </span> <span class="Delimiter">}</span>
<span id="L47" class="LineNr">47 </span><span class="Delimiter">}</span>
<span id="L48" class="LineNr">48 </span>
<span id="L49" class="LineNr">49 </span><span class="PreProc">type</span> <a href='tile.mu.html#L49'>timespec</a> <span class="Delimiter">{</span>
<span id="L50" class="LineNr">50 </span> tv_sec: int
<span id="L51" class="LineNr">51 </span> tv_nsec: int
<span id="L52" class="LineNr">52 </span><span class="Delimiter">}</span>
<span id="L53" class="LineNr">53 </span>
<span id="L54" class="LineNr">54 </span><span class="Comment"># prototype wrapper around syscall_nanosleep</span>
<span id="L55" class="LineNr">55 </span><span class="Comment"># nsecs must be less than 999999999 or 0x3b9ac9ff nanoseconds</span>
<span id="L56" class="LineNr">56 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='tile.mu.html#L56'>sleep</a></span> secs: int, nsecs: int <span class="Delimiter">{</span>
<span id="L57" class="LineNr">57 </span> <span class="PreProc">var</span> t: <a href='tile.mu.html#L49'>timespec</a>
<span id="L58" class="LineNr">58 </span> <span class="Comment"># initialize t</span>
<span id="L59" class="LineNr">59 </span> <span class="PreProc">var</span> tmp/<span class="Constant">eax</span>: (addr int) <span class="SpecialChar"><-</span> <a href='../081table.subx.html#L26'>get</a> t, tv_sec
<span id="L60" class="LineNr">60 </span> <span class="PreProc">var</span> tmp2/<span class="Constant">ecx</span>: int <span class="SpecialChar"><-</span> copy secs
<span id="L61" class="LineNr">61 </span> copy-to *tmp, tmp2
<span id="L62" class="LineNr">62 </span> tmp <span class="SpecialChar"><-</span> <a href='../081table.subx.html#L26'>get</a> t, tv_nsec
<span id="L63" class="LineNr">63 </span> tmp2 <span class="SpecialChar"><-</span> copy nsecs
<span id="L64" class="LineNr">64 </span> copy-to *tmp, tmp2
<span id="L65" class="LineNr">65 </span> <span class="Comment"># perform the syscall</span>
<span id="L66" class="LineNr">66 </span> <span class="PreProc">var</span> t-addr/<span class="Constant">ebx</span>: (addr <a href='tile.mu.html#L49'>timespec</a>) <span class="SpecialChar"><-</span> address t
<span id="L67" class="LineNr">67 </span> <span class="PreProc">var</span> rem-addr/<span class="Constant">ecx</span>: (addr <a href='tile.mu.html#L49'>timespec</a>) <span class="SpecialChar"><-</span> copy <span class="Constant">0</span>
<span id="L68" class="LineNr">68 </span> syscall_nanosleep
<span id="L69" class="LineNr">69 </span><span class="Delimiter">}</span>
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