Langton's ant: Difference between revisions

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=={{header|Phix}}==
=={{header|Phix}}==
<lang Phix>sequence grid = repeat(repeat(' ',100),100)
<!--<lang Phix>(phixonline)-->
<span style="color: #004080;">sequence</span> <span style="color: #000000;">grid</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">' '</span><span style="color: #0000FF;">,</span><span style="color: #000000;">100</span><span style="color: #0000FF;">),</span><span style="color: #000000;">100</span><span style="color: #0000FF;">)</span>
integer aX = 50, aY = 50,
<span style="color: #004080;">integer</span> <span style="color: #000000;">aX</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">50</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">aY</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">50</span><span style="color: #0000FF;">,</span>
gXY, angle = 1 -- ' '/'#'; 0,1,2,3 = NESW
<span style="color: #000000;">gXY</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">angle</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span> <span style="color: #000080;font-style:italic;">-- ' '/'#'; 0,1,2,3 = NESW</span>
constant dX = {0,-1,0,1} -- (dY = reverse(dX))
<span style="color: #008080;">constant</span> <span style="color: #000000;">dX</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">0</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">}</span> <span style="color: #000080;font-style:italic;">-- (dY = reverse(dX))</span>
while aX>=1 and aX<=100
<span style="color: #008080;">while</span> <span style="color: #000000;">aX</span><span style="color: #0000FF;">>=</span><span style="color: #000000;">1</span> <span style="color: #008080;">and</span> <span style="color: #000000;">aX</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">100</span>
and aY>=1 and aY<=100 do
<span style="color: #008080;">and</span> <span style="color: #000000;">aY</span><span style="color: #0000FF;">>=</span><span style="color: #000000;">1</span> <span style="color: #008080;">and</span> <span style="color: #000000;">aY</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">100</span> <span style="color: #008080;">do</span>
gXY = grid[aX][aY]
<span style="color: #000000;">gXY</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">grid</span><span style="color: #0000FF;">[</span><span style="color: #000000;">aX</span><span style="color: #0000FF;">][</span><span style="color: #000000;">aY</span><span style="color: #0000FF;">]</span>
grid[aX][aY] = 67-gXY -- ' '<=>'#', aka 32<->35
<span style="color: #000000;">grid</span><span style="color: #0000FF;">[</span><span style="color: #000000;">aX</span><span style="color: #0000FF;">][</span><span style="color: #000000;">aY</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">67</span><span style="color: #0000FF;">-</span><span style="color: #000000;">gXY</span> <span style="color: #000080;font-style:italic;">-- ' '&lt;=&gt;'#', aka 32&lt;-&gt;35</span>
angle = mod(angle+2*gXY+3,4) -- +/-1, ie 0,1,2,3 -> 1,2,3,0 or 3,0,1,2
<span style="color: #000000;">angle</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">mod</span><span style="color: #0000FF;">(</span><span style="color: #000000;">angle</span><span style="color: #0000FF;">+</span><span style="color: #000000;">2</span><span style="color: #0000FF;">*</span><span style="color: #000000;">gXY</span><span style="color: #0000FF;">+</span><span style="color: #000000;">3</span><span style="color: #0000FF;">,</span><span style="color: #000000;">4</span><span style="color: #0000FF;">)</span> <span style="color: #000080;font-style:italic;">-- +/-1, ie 0,1,2,3 -&gt; 1,2,3,0 or 3,0,1,2</span>
aX += dX[angle+1]
<span style="color: #000000;">aX</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">dX</span><span style="color: #0000FF;">[</span><span style="color: #000000;">angle</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span>
aY += dX[4-angle]
<span style="color: #000000;">aY</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">dX</span><span style="color: #0000FF;">[</span><span style="color: #000000;">4</span><span style="color: #0000FF;">-</span><span style="color: #000000;">angle</span><span style="color: #0000FF;">]</span>
end while
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
puts(1,join(grid,"\n"))</lang>
<span style="color: #7060A8;">puts</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">join</span><span style="color: #0000FF;">(</span><span style="color: #000000;">grid</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">))</span>
<!--</lang>-->
{{out}}
{{out}}
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