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    <title>Ayuda de DIV 2 - define_region()</title>
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    <meta name="description" content="Ayuda en pantalla de DIV Games Studio 2" />
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    <h1>define_region()</h1>

    <p><strong>define_region(</strong>&lt;n&uacute;mero de regi&oacute;n&gt;<strong>,</strong>
    &lt;x&gt;<strong>,</strong> &lt;y&gt;<strong>,</strong>&lt;ancho&gt;
    <strong>,</strong>&lt;alto&gt; <strong>)</strong></p>

    <p><strong>Descripci&oacute;n:</strong></p>

    <p>Define una nueva regi&oacute;n de visualizaci&oacute;n dentro de la pantalla (algo
    as&iacute; como una ventana). Las regiones son zonas rectangulares de la pantalla dentro de las
    cuales se visualizar&aacute;n unos determinados procesos, ventanas de scroll o de modo 7.</p>

    <p>El <strong>n&uacute;mero de regi&oacute;n</strong> debe ser entre 1 y 31. Se pueden definir
    hasta 31 regiones diferentes de pantalla que despu&eacute;s podr&aacute;n asignarse a
    diferentes procesos (fijando su variable local <a href="1130.html">region</a> al nuevo
    n&uacute;mero) como su ventana de visualizaci&oacute;n, o bien utilizarse como marco para una
    ventana de scroll o de modo 7 indic&aacute;ndolo en el par&aacute;metro correspondiente de las
    funciones <a href="163.html">start_scroll()</a> o <a href="162.html">start_mode7()</a>.</p>

    <p>La <strong>regi&oacute;n n&uacute;mero 0</strong> no se debe redefinir, pues ser&aacute;
    siempre la pantalla completa, una ventana en las coordenadas (0, 0) y del ancho y alto de la
    pantalla. &Eacute;sta es la regi&oacute;n en la que se visualizar&aacute;n por defecto todos
    los procesos, ya que su variable local <a href="1130.html">region</a> siempre vale 0 por
    defecto.</p>

    <div class="ejemplo">
      <div class="ejtitulo">
        Programa ejemplo:
      </div>
<pre class="ejprograma">
<span class="syntax1">PROGRAM</span> ejemplo_define_region<span class="syntax3">;</span>

<span class="syntax1">PRIVATE</span>
    contador<span class="syntax3">;</span>

<span class="syntax1">BEGIN</span>
    load_fpg<span class="syntax3">(</span><span class="syntax4">"help\help.fpg"</span><span
class="syntax3">);</span>
    put_screen<span class="syntax3">(</span><span class="syntax2">0</span><span
class="syntax3">,</span> <span class="syntax2">1</span><span class="syntax3">);</span>

    define_region<span class="syntax3">(</span><span class="syntax2">1</span><span
class="syntax3">,</span> <span class="syntax2">0</span><span class="syntax3">,</span> <span
class="syntax2">0</span><span class="syntax3">,</span> <span class="syntax2">160</span><span
class="syntax3">,</span> <span class="syntax2">200</span><span class="syntax3">);</span>   <span
class="syntax5">// Definimos la regi&oacute;n 1</span>
    define_region<span class="syntax3">(</span><span class="syntax2">2</span><span
class="syntax3">,</span> <span class="syntax2">160</span><span class="syntax3">,</span> <span
class="syntax2">0</span><span class="syntax3">,</span> <span class="syntax2">160</span><span
class="syntax3">,</span> <span class="syntax2">200</span><span class="syntax3">);</span> <span
class="syntax5">// Definimos la regi&oacute;n 2</span>

    write<span class="syntax3">(</span><span class="syntax2">0</span><span
class="syntax3">,</span> <span class="syntax2">0</span><span class="syntax3">,</span> <span
class="syntax2">0</span><span class="syntax3">,</span> <span class="syntax2">0</span><span
class="syntax3">,</span> <span class="syntax4">"Regi&oacute;n 1"</span><span
class="syntax3">);</span>
    write<span class="syntax3">(</span><span class="syntax2">0</span><span
class="syntax3">,</span> <span class="syntax2">320</span><span class="syntax3">,</span> <span
class="syntax2">0</span><span class="syntax3">,</span> <span class="syntax2">2</span><span
class="syntax3">,</span> <span class="syntax4">"Regi&oacute;n 2"</span><span
class="syntax3">);</span>

    <span class="syntax1">FROM</span> contador<span class="syntax3">=</span><span
class="syntax2">1</span> <span class="syntax1">TO</span> <span class="syntax2">20</span><span
class="syntax3">;</span>
        proceso_m&oacute;vil<span class="syntax3">(</span>rand<span class="syntax3">(</span><span
class="syntax2">0</span><span class="syntax3">,</span> <span class="syntax2">319</span><span
class="syntax3">),</span> rand<span class="syntax3">(</span><span class="syntax2">0</span><span
class="syntax3">,</span> <span class="syntax2">159</span><span class="syntax3">),</span> rand<span
class="syntax3">(-</span><span class="syntax2">8</span><span class="syntax3">,</span> <span
class="syntax2">8</span><span class="syntax3">),</span> rand<span class="syntax3">(-</span><span
class="syntax2">8</span><span class="syntax3">,</span> <span class="syntax2">8</span><span
class="syntax3">),</span> rand<span class="syntax3">(</span><span class="syntax2">1</span><span
class="syntax3">,</span> <span class="syntax2">2</span><span class="syntax3">));</span>
    <span class="syntax1">END</span>
<span class="syntax1">END</span>

<span class="syntax1">PROCESS</span> proceso_m&oacute;vil<span class="syntax3">(</span>x<span
class="syntax3">,</span> <span class="syntax1">y</span><span
class="syntax3">,</span> incremento_x<span class="syntax3">,</span> incremento_y<span
class="syntax3">,</span> region<span class="syntax3">);</span>

<span class="syntax1">BEGIN</span>
    graph<span class="syntax3">=</span><span class="syntax2">100</span><span
class="syntax3">;</span>
    <span class="syntax1">LOOP</span>
        <span class="syntax1">IF</span> <span class="syntax3">(</span>x<span
class="syntax3">&lt;</span><span class="syntax2">0</span> <span class="syntax1">OR</span> x<span
class="syntax3">&gt;</span><span class="syntax2">320</span><span
class="syntax3">)</span> incremento_x<span class="syntax3">=-</span>incremento_x<span
class="syntax3">;</span> <span class="syntax1">END</span>
        <span class="syntax1">IF</span> <span class="syntax3">(</span><span
class="syntax1">y</span><span class="syntax3">&lt;</span><span class="syntax2">0</span> <span
class="syntax1">OR</span> <span class="syntax1">y</span><span class="syntax3">&gt;</span><span
class="syntax2">200</span><span class="syntax3">)</span> incremento_y<span
class="syntax3">=-</span>incremento_y<span class="syntax3">;</span> <span
class="syntax1">END</span>
        x<span class="syntax3">+=</span>incremento_x<span class="syntax3">;</span>
        <span class="syntax1">y</span><span class="syntax3">+=</span>incremento_y<span
class="syntax3">;</span>
        <span class="syntax1">FRAME</span><span class="syntax3">;</span>
    <span class="syntax1">END</span>
<span class="syntax1">END</span>
</pre>
    </div>
    <br />
    <br />

    <p>Primero se definen dos regiones como divisiones laterales de la pantalla. Luego, se crean
    con un bucle 20 procesos de tipo <strong>proceso_m&oacute;vil</strong> en coordenadas y
    desplazamiento aleatorios, en una de las dos regiones.</p>

    <p>Se puede observar en su ejecuci&oacute;n c&oacute;mo cada proceso se ve &uacute;nicamente en
    una de las dos mitades de la pantalla (s&oacute;lo en su regi&oacute;n).</p>
    <hr />
    Ver: <a href="143.html">out_region()</a> - <a href="163.html">start_scroll()</a> - <a
    href="162.html">start_mode7()</a> - <a href="1130.html">Variable region</a>
  </body>
</html>