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<HTML><HEAD><TITLE>Root functor: Trucks.oz</TITLE><LINK href="ozdoc.css" rel="stylesheet" type="text/css"></HEAD><BODY><TABLE align="center" border="0" cellpadding="6" cellspacing="6" class="nav"><TR bgcolor="#DDDDDD"><TD><A href="trucks.html">- Up -</A></TD></TR></TABLE><DIV class="unnumbered" id="code.trucks"><H3><A name="code.trucks">Root functor: <CODE>Trucks.oz</CODE></A></H3><P class="margin"><A href="Trucks.oz">Source File</A></P><P> </P><BLOCKQUOTE><PRE><SPAN class="keyword">functor</SPAN>&nbsp;<BR>&nbsp;<BR><SPAN class="keyword">require</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;DemoUrls(image)<BR>&nbsp;<BR><SPAN class="keyword">prepare</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;ImageNames&nbsp;=&nbsp;[DemoUrls<SPAN class="keyword">.</SPAN>image<SPAN class="keyword">#</SPAN><SPAN class="string">'trucks/truck-right.ppm'</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;DemoUrls<SPAN class="keyword">.</SPAN>image<SPAN class="keyword">#</SPAN><SPAN class="string">'trucks/truck-left.ppm'</SPAN>]<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;Width&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;600<BR>&nbsp;&nbsp;&nbsp;Height&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;165<BR>&nbsp;&nbsp;&nbsp;TruckHeight&nbsp;=&nbsp;60<BR>&nbsp;&nbsp;&nbsp;Free&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;25<BR>&nbsp;<BR><SPAN class="keyword">import</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;Tk<BR>&nbsp;&nbsp;&nbsp;TkTools<BR>&nbsp;&nbsp;&nbsp;Application<BR>&nbsp;<BR><SPAN class="keyword">define</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;Images&nbsp;=&nbsp;{TkTools<SPAN class="keyword">.</SPAN>images&nbsp;ImageNames}<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">class</SPAN>&nbsp;<SPAN class="type">Truck</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">prop</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;final<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">from</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Time<SPAN class="keyword">.</SPAN>repeat&nbsp;Tk<SPAN class="keyword">.</SPAN>canvasTag<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">attr</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;state:off<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;step:1<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">init</SPAN>(c:Canvas&nbsp;x:X<SPAN class="keyword">&lt;=</SPAN>0&nbsp;y:Y<SPAN class="keyword">&lt;=</SPAN>0)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Truck<SPAN class="keyword">,</SPAN>&nbsp;tkInit(parent:Canvas)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Canvas&nbsp;tk(crea&nbsp;image&nbsp;X&nbsp;Y&nbsp;image:Images<SPAN class="keyword">.</SPAN><SPAN class="string">'truck-right'</SPAN>&nbsp;tag:<SPAN class="keyword">self</SPAN>)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;setRepAll(delay:&nbsp;&nbsp;100<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;number:&nbsp;Width&nbsp;<SPAN class="keyword">div</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>step<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;action:&nbsp;moveTruck&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;final:&nbsp;&nbsp;switch)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;tkBind(event:<SPAN class="string">'&lt;1&gt;'</SPAN>&nbsp;action:<SPAN class="keyword">self#</SPAN>toggle)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;tkBind(event:<SPAN class="string">'&lt;2&gt;'</SPAN>&nbsp;action:<SPAN class="keyword">self#</SPAN>change(<SPAN class="keyword">~</SPAN>1))}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;tkBind(event:<SPAN class="string">'&lt;3&gt;'</SPAN>&nbsp;action:<SPAN class="keyword">self#</SPAN>change(1))}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">moveTruck</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Truck<SPAN class="keyword">,</SPAN>&nbsp;tk(move&nbsp;<SPAN class="keyword">@</SPAN>step&nbsp;0)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">switch</SPAN>&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;step&nbsp;<SPAN class="keyword">&lt;-</SPAN>&nbsp;<SPAN class="keyword">~</SPAN>1&nbsp;<SPAN class="keyword">*</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>step<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">if</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>step<SPAN class="keyword">&gt;</SPAN>0<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;tk(itemconf&nbsp;image:Images<SPAN class="keyword">.</SPAN><SPAN class="string">'truck-right'</SPAN>)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">else</SPAN>&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;tk(itemconf&nbsp;image:Images<SPAN class="keyword">.</SPAN><SPAN class="string">'truck-left'</SPAN>)}&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;go}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">toggle</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">try</SPAN>&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">case</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>state<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">of</SPAN>&nbsp;off&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;state<SPAN class="keyword">&lt;-</SPAN>on&nbsp;&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;go}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">[]</SPAN>&nbsp;on&nbsp;&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;state<SPAN class="keyword">&lt;-</SPAN>off&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;stop}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">catch</SPAN>&nbsp;system(<SPAN class="keyword">...</SPAN>)&nbsp;<SPAN class="keyword">then</SPAN>&nbsp;<SPAN class="keyword">skip</SPAN>&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">change</SPAN>(S)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N&nbsp;=&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;getRep(delay:$)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<SPAN class="keyword">self</SPAN>&nbsp;setRepDelay({Max&nbsp;2&nbsp;N<SPAN class="keyword">+</SPAN>S<SPAN class="keyword">*</SPAN>(N&nbsp;<SPAN class="keyword">div</SPAN>&nbsp;2)})}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">close</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Time<SPAN class="keyword">.</SPAN>repeat<SPAN class="keyword">,</SPAN>&nbsp;&nbsp;stop<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Tk<SPAN class="keyword">.</SPAN>canvasTag<SPAN class="keyword">,</SPAN>&nbsp;tkClose<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;T&nbsp;=&nbsp;{New&nbsp;Tk<SPAN class="keyword">.</SPAN>toplevel&nbsp;tkInit(title:&nbsp;&nbsp;<SPAN class="string">'Truckrace'</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delete:&nbsp;Application<SPAN class="keyword">.</SPAN>exit&nbsp;<SPAN class="keyword">#</SPAN>&nbsp;0)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;C&nbsp;=&nbsp;{New&nbsp;Tk<SPAN class="keyword">.</SPAN>canvas&nbsp;tkInit(parent:&nbsp;T<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bg:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;white<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;width:&nbsp;&nbsp;Width<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;height:&nbsp;Height)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;{Tk<SPAN class="keyword">.</SPAN>send&nbsp;pack(C&nbsp;fill:both)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">thread</SPAN>&nbsp;{New&nbsp;Truck&nbsp;init(c:C&nbsp;y:Free)&nbsp;&nbsp;_}&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">thread</SPAN>&nbsp;{New&nbsp;Truck&nbsp;init(c:C&nbsp;y:Free<SPAN class="keyword">+</SPAN>TruckHeight)&nbsp;&nbsp;_}&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">thread</SPAN>&nbsp;{New&nbsp;Truck&nbsp;init(c:C&nbsp;y:Free<SPAN class="keyword">+</SPAN>TruckHeight<SPAN class="keyword">*</SPAN>2)&nbsp;_}&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR><SPAN class="keyword">end</SPAN>&nbsp;<BR></PRE></BLOCKQUOTE><P></P></DIV><TABLE align="center" border="0" cellpadding="6" cellspacing="6" class="nav"><TR bgcolor="#DDDDDD"><TD><A href="trucks.html">- Up -</A></TD></TR></TABLE><HR><ADDRESS><SPAN class="version">Version 1.4.0 (20110908185330)</SPAN></ADDRESS></BODY></HTML>

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