298 lines
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298 lines
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<h1>Text Input<a class="headerlink" href="#text-input" title="Permalink to this headline"> link</a></h1>
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<p>With some limitations, Ren'Py can prompt the user to input a small
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amount of text. This prompting is done by the <a class="reference internal" href="#renpy.input" title="renpy.input"><code class="xref py py-func docutils literal notranslate"><span class="pre">renpy.input()</span></code></a> function,
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which returns the entered text, allowing it to be saved in a variable
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or otherwise processed.</p>
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<p>On Linux, text input is limited to languages that do not require
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input method (IME) support. Most Western languages should work, but
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Chinese, Japanese, and Korean probably won't.</p>
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<p>The renpy.input function is defined as:</p>
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<dl class="function">
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<dt id="renpy.input">
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<code class="descclassname">renpy.</code><code class="descname">input</code><span class="sig-paren">(</span><em>prompt</em>, <em>default=u''</em>, <em>allow=None</em>, <em>exclude=u'{}'</em>, <em>length=None</em>, <em>with_none=None</em>, <em>pixel_width=None</em>, <em>screen=u'input'</em>, <em>mask=None</em>, <em>copypaste=True</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#renpy.input" title="Permalink to this definition"> link</a></dt>
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<dd><p>Calling this function pops up a window asking the player to enter some
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text. It returns the entered text.</p>
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<dl class="docutils">
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<dt><cite>prompt</cite></dt>
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<dd>A string giving a prompt to display to the player.</dd>
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<dt><cite>default</cite></dt>
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<dd>A string giving the initial text that will be edited by the player.</dd>
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<dt><cite>allow</cite></dt>
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<dd>If not None, a string giving a list of characters that will
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be allowed in the text.</dd>
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<dt><cite>exclude</cite></dt>
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<dd>If not None, if a character is present in this string, it is not
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allowed in the text.</dd>
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<dt><cite>length</cite></dt>
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<dd>If not None, this must be an integer giving the maximum length
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of the input string.</dd>
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<dt><cite>pixel_width</cite></dt>
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<dd>If not None, the input is limited to being this many pixels wide,
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in the font used by the input to display text.</dd>
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<dt><cite>screen</cite></dt>
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<dd>The name of the screen that takes input. If not given, the <code class="docutils literal notranslate"><span class="pre">input</span></code>
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screen is used.</dd>
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<dt><cite>mask</cite></dt>
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<dd>If not None, a single-character string that replaces the input text that
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is shown to the player, such as to conceal a password.</dd>
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<dt><cite>copypaste</cite></dt>
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<dd>When true, copying from and pasting to this input is allowed.</dd>
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</dl>
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<p>If <a class="reference internal" href="config.html#var-config.disable_input"><code class="xref std std-var docutils literal notranslate"><span class="pre">config.disable_input</span></code></a> is True, this function only returns
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<cite>default</cite>.</p>
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<p>Keywords prefixed with <code class="docutils literal notranslate"><span class="pre">show_</span></code> have the prefix stripped and
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are passed to the screen.</p>
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<p>Due to limitations in supporting libraries, on Android and the web platform
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this function is limited to alphabetic characters.</p>
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</dd></dl>
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<p>Games that use renpy.input will often want to process the result
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further, using standard Python string manipulation functions. For
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example, the following will ask the player for his or her
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name and remove leading or trailing whitespace. If the name is
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empty, it will be replaced by a default name. Finally, it is
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displayed to the user.</p>
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<div class="highlight-renpy notranslate"><div class="highlight"><pre><span></span><span class="k">define</span> <span class="n">pov</span> <span class="o">=</span> <span class="n">Character</span><span class="p">(</span><span class="s2">"[povname]"</span><span class="p">)</span>
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<span class="k">python</span><span class="p">:</span>
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<span class="n">povname</span> <span class="o">=</span> <span class="n">renpy</span><span class="o">.</span><span class="k">input</span><span class="p">(</span><span class="s2">"What is your name?"</span><span class="p">,</span> <span class="na">length</span><span class="o">=</span><span class="mi">32</span><span class="p">)</span>
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<span class="n">povname</span> <span class="o">=</span> <span class="n">povname</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
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<span class="k">if</span> <span class="k">not</span> <span class="n">povname</span><span class="p">:</span>
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<span class="n">povname</span> <span class="o">=</span> <span class="s2">"Pat Smith"</span>
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<span class="n">pov</span> <span class="s2">"My name is [povname]!"</span>
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</pre></div>
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</div>
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<p>In this, the length of the input is limited to 32 characters. It's important
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to test your game with long names, to makes sure that those names do not break
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text layout. At the same time, too short fields may prevent people from entering
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their preferred name.</p>
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