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<main role="main">
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<!--Weave of 'Actions Plugin' generated by Inweb-->
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<div class="breadcrumbs">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7</a></li><li><a href="index.html">if</a></li><li><a href="index.html#4">Chapter 4: Actions</a></li><li><b>Actions Plugin</b></li></ul></div>
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<p class="purpose">A plugin for actions, by which animate characters change the world model.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>Support for actions is contained in the "actions" plugin, which occupies this
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entire chapter.
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</p>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ActionsPlugin::start</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">ActionsPlugin::start</span></span>:<br/>IF Module - <a href="1-im.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><a href="4-anaa.html#SP2" class="function-link"><span class="function-syntax">ActionsNodes::nodes_and_annotations</span></a><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">PluginManager::plug</span><span class="plain-syntax">(</span><span class="identifier-syntax">MAKE_SPECIAL_MEANINGS_PLUG</span><span class="plain-syntax">, </span><a href="4-ap.html#SP2" class="function-link"><span class="function-syntax">ActionsPlugin::make_special_meanings</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">PluginManager::plug</span><span class="plain-syntax">(</span><span class="identifier-syntax">NEW_BASE_KIND_NOTIFY_PLUG</span><span class="plain-syntax">, </span><a href="4-ap.html#SP4" class="function-link"><span class="function-syntax">ActionsPlugin::actions_new_base_kind_notify</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">PluginManager::plug</span><span class="plain-syntax">(</span><span class="identifier-syntax">COMPILE_CONSTANT_PLUG</span><span class="plain-syntax">, </span><a href="4-act.html#SP5" class="function-link"><span class="function-syntax">PL::Actions::actions_compile_constant</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">PluginManager::plug</span><span class="plain-syntax">(</span><span class="identifier-syntax">OFFERED_PROPERTY_PLUG</span><span class="plain-syntax">, </span><a href="4-act.html#SP5" class="function-link"><span class="function-syntax">PL::Actions::actions_offered_property</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">PluginManager::plug</span><span class="plain-syntax">(</span><span class="identifier-syntax">OFFERED_SPECIFICATION_PLUG</span><span class="plain-syntax">, </span><a href="4-act.html#SP5" class="function-link"><span class="function-syntax">PL::Actions::actions_offered_specification</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">PluginManager::plug</span><span class="plain-syntax">(</span><span class="identifier-syntax">TYPECHECK_EQUALITY_PLUG</span><span class="plain-syntax">, </span><a href="4-act.html#SP6" class="function-link"><span class="function-syntax">PL::Actions::actions_typecheck_equality</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">PluginManager::plug</span><span class="plain-syntax">(</span><span class="identifier-syntax">PRODUCTION_LINE_PLUG</span><span class="plain-syntax">, </span><a href="4-ap.html#SP2" class="function-link"><span class="function-syntax">ActionsPlugin::production_line</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Vocabulary::set_flags</span><span class="plain-syntax">(</span><span class="identifier-syntax">Vocabulary::entry_for_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">L</span><span class="string-syntax">"doing"</span><span class="plain-syntax">), </span><span class="identifier-syntax">ACTION_PARTICIPLE_MC</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Vocabulary::set_flags</span><span class="plain-syntax">(</span><span class="identifier-syntax">Vocabulary::entry_for_text</span><span class="plain-syntax">(</span><span class="identifier-syntax">L</span><span class="string-syntax">"asking"</span><span class="plain-syntax">), </span><span class="identifier-syntax">ACTION_PARTICIPLE_MC</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ActionsPlugin::production_line</span><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">stage</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">debugging</span><span class="plain-syntax">, </span><span class="identifier-syntax">stopwatch_timer</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sequence_timer</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">stage</span><span class="plain-syntax"> == </span><span class="identifier-syntax">INTER1_CSEQ</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">BENCH</span><span class="plain-syntax">(</span><a href="4-nap.html#SP2" class="function-link"><span class="function-syntax">PL::Actions::Patterns::Named::compile</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">BENCH</span><span class="plain-syntax">(</span><a href="4-act.html#SP32" class="function-link"><span class="function-syntax">PL::Actions::ActionData</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">BENCH</span><span class="plain-syntax">(</span><a href="4-act.html#SP33" class="function-link"><span class="function-syntax">PL::Actions::ActionCoding_array</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">BENCH</span><span class="plain-syntax">(</span><a href="4-act.html#SP28" class="function-link"><span class="function-syntax">PL::Actions::ActionHappened</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">BENCH</span><span class="plain-syntax">(</span><a href="4-act.html#SP31" class="function-link"><span class="function-syntax">PL::Actions::compile_action_routines</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ActionsPlugin::make_special_meanings</span><span class="plain-syntax">(</span><span class="reserved-syntax">void</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">SpecialMeanings::declare</span><span class="plain-syntax">(</span><a href="4-act.html#SP20" class="function-link"><span class="function-syntax">PL::Actions::new_action_SMF</span></a><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"new-action"</span><span class="plain-syntax">, </span><span class="constant-syntax">2</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b><span class="extract"><span class="extract-syntax">DESCRIPTION_OF_ACTION</span></span> is used in type-checking to represent gerunds: that
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is, actions described by what appear to be participles but which are in
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context nouns ("if taking something, ...").
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</p>
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<p class="commentary"><span class="extract"><span class="extract-syntax">ACTION_NAME</span></span>. For those rare occasions where we need to identify the
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basic underlying action but none of the nouns, etc., thereto. At run-time,
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this stores as the I6 action number: e.g. <span class="extract"><span class="extract-syntax">##Go</span></span> for the going action.
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</p>
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<p class="commentary"><span class="extract"><span class="extract-syntax">STORED_ACTION</span></span> is just what it says it is: a stored action, which can be
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tried later. This is a pointer value; see "StoredAction.i6t".
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</p>
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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">ActionsPlugin::actions_new_base_kind_notify</span><button class="popup" onclick="togglePopup('usagePopup2')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup2">Usage of <span class="code-font"><span class="function-syntax">ActionsPlugin::actions_new_base_kind_notify</span></span>:<br/><a href="4-ap.html#SP2">§2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">new_base</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">wording</span><span class="plain-syntax"> </span><span class="identifier-syntax">W</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq_wide_string</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"ACTION_NAME_TY"</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">K_action_name</span><span class="plain-syntax"> = </span><span class="identifier-syntax">new_base</span><span class="plain-syntax">; </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq_wide_string</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"DESCRIPTION_OF_ACTION_TY"</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">K_description_of_action</span><span class="plain-syntax"> = </span><span class="identifier-syntax">new_base</span><span class="plain-syntax">; </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::eq_wide_string</span><span class="plain-syntax">(</span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">L</span><span class="string-syntax">"STORED_ACTION_TY"</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">K_stored_action</span><span class="plain-syntax"> = </span><span class="identifier-syntax">new_base</span><span class="plain-syntax">; </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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