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  <section id="console">
<h1>Console<a class="headerlink" href="#console" title="Permalink to this headline">¶</a></h1>
<p>The Console displays information, warnings, errors, and debug output from the
Level Editor, the running game, and other engine components. It also lets you
interact with runtime instances by sending commands and Lua expressions.</p>
<img alt="../_images/console.png" src="../_images/console.png" />
<section id="runtime-connections">
<h2>Runtime connections<a class="headerlink" href="#runtime-connections" title="Permalink to this headline">¶</a></h2>
<p>Each engine runtime spawned by the Level Editor is connected via TCP/IP, and
the Console is the main UI for communicating with those instances. By default
the Console is set to communicate with the editor runtime itself. When you
start the game from the Level Editor, Crown switches the Console to
communicate with the game runtime. You can also select manually which runtime
the Console talks to using the runtime selector:</p>
<img alt="../_images/console_runtime_selector.svg" src="../_images/console_runtime_selector.svg" /></section>
<section id="commands">
<h2>Commands<a class="headerlink" href="#commands" title="Permalink to this headline">¶</a></h2>
<p>You can type both commands and Lua expressions in the Command Bar. Use
commands for low-level testing, profiling, or engine configuration. Commands
must be prefixed with a colon (<code class="docutils literal notranslate"><span class="pre">:</span></code>) so they are distinguished from Lua
expressions. Type <code class="docutils literal notranslate"><span class="pre">:help</span></code> in the Command Bar to see the available commands.</p>
<p>See <a class="reference internal" href="../reference/console_commands.html#console-commands"><span class="std std-ref">Console commands</span></a> for full documentation.</p>
</section>
<section id="lua-expressions">
<h2>Lua expressions<a class="headerlink" href="#lua-expressions" title="Permalink to this headline">¶</a></h2>
<p>You can send arbitrary Lua expressions to the connected runtime. Enter a Lua
expression in the Command Bar and press <code class="docutils literal notranslate"><span class="pre">Enter</span></code>. The runtime evaluates the
expression and prints the result back to the Console. This is useful for
inspecting state, calling engine APIs, or invoking game code while the game
is running.</p>
<img alt="../_images/console_lua_expression.svg" src="../_images/console_lua_expression.svg" /></section>
<section id="history-navigation">
<h2>History navigation<a class="headerlink" href="#history-navigation" title="Permalink to this headline">¶</a></h2>
<p>The Console keeps a history of executed commands and expressions. Use the <code class="docutils literal notranslate"><span class="pre">Up</span>
<span class="pre">Arrow</span></code> and <code class="docutils literal notranslate"><span class="pre">Down</span> <span class="pre">Arrow</span></code> keys to navigate backward and forward through
recent entries. The maximum history size is configurable from Preferences
dialog.</p>
</section>
<section id="resource-id-lookup">
<h2>Resource ID lookup<a class="headerlink" href="#resource-id-lookup" title="Permalink to this headline">¶</a></h2>
<p>For efficiency, Crown runtimes in most cases use hashed numeric identifiers
instead of plain-text strings. When the Console detects such numeric IDs, it
attempts to resolve them back to readable names so logs are easier to
understand:</p>
<img alt="../_images/console_id_lookup.svg" src="../_images/console_id_lookup.svg" /></section>
</section>


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