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</pre><div class="example-wrap"><pre class="rust ">
<span class="kw">use</span> <span class="ident">rand_xorshift</span>::<span class="ident">XorShiftRng</span>;

<span class="kw">use</span> <span class="ident">abstutil</span>::{<span class="ident">MapName</span>, <span class="ident">Timer</span>};
<span class="kw">use</span> <span class="ident">geom</span>::<span class="ident">Duration</span>;
<span class="kw">use</span> <span class="ident">map_model</span>::{<span class="ident">EditCmd</span>, <span class="ident">EditIntersection</span>, <span class="ident">Map</span>, <span class="ident">MapEdits</span>};
<span class="kw">use</span> <span class="ident">sim</span>::{<span class="ident">OrigPersonID</span>, <span class="ident">Scenario</span>, <span class="ident">ScenarioGenerator</span>, <span class="ident">ScenarioModifier</span>};
<span class="kw">use</span> <span class="ident">widgetry</span>::{
    <span class="ident">lctrl</span>, <span class="ident">Btn</span>, <span class="ident">Color</span>, <span class="ident">EventCtx</span>, <span class="ident">GeomBatch</span>, <span class="ident">GfxCtx</span>, <span class="ident">Key</span>, <span class="ident">Line</span>, <span class="ident">Outcome</span>, <span class="ident">Panel</span>, <span class="ident">State</span>, <span class="ident">TextExt</span>,
    <span class="ident">Widget</span>,
};

<span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">freeform</span>::<span class="ident">spawn_agents_around</span>;
<span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">tutorial</span>::{<span class="ident">Tutorial</span>, <span class="ident">TutorialPointer</span>, <span class="ident">TutorialState</span>};
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">app</span>::<span class="ident">App</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">challenges</span>::{<span class="ident">Challenge</span>, <span class="ident">ChallengesPicker</span>};
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">edit</span>::<span class="ident">SaveEdits</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">game</span>::<span class="ident">Transition</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">pregame</span>::<span class="ident">MainMenu</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">sandbox</span>::{<span class="ident">Actions</span>, <span class="ident">SandboxControls</span>, <span class="ident">SandboxMode</span>};

<span class="comment">// TODO pub so challenges can grab cutscenes and SandboxMode can dispatch to actions. Weird?</span>
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">commute</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">fix_traffic_signals</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">freeform</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">play_scenario</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">tutorial</span>;

<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">GameplayMode</span> {
    <span class="comment">// TODO Maybe this should be &quot;sandbox&quot;</span>
    <span class="ident">Freeform</span>(<span class="ident">MapName</span>),
    <span class="comment">// Map name, scenario name</span>
    <span class="ident">PlayScenario</span>(<span class="ident">MapName</span>, <span class="ident">String</span>, <span class="ident">Vec</span><span class="op">&lt;</span><span class="ident">ScenarioModifier</span><span class="op">&gt;</span>),
    <span class="ident">FixTrafficSignals</span>,
    <span class="ident">OptimizeCommute</span>(<span class="ident">OrigPersonID</span>, <span class="ident">Duration</span>),

    <span class="comment">// current</span>
    <span class="ident">Tutorial</span>(<span class="ident">TutorialPointer</span>),
}

<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">GameplayState</span>: <span class="ident">downcast_rs</span>::<span class="ident">Downcast</span> {
    <span class="kw">fn</span> <span class="ident">event</span>(
        <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>,
        <span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>,
        <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">App</span>,
        <span class="ident">controls</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">SandboxControls</span>,
        <span class="ident">actions</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">Actions</span>,
    ) <span class="op">-&gt;</span> <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Transition</span><span class="op">&gt;</span>;
    <span class="kw">fn</span> <span class="ident">draw</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">g</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">GfxCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>);
    <span class="kw">fn</span> <span class="ident">on_destroy</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">App</span>) {}
    <span class="kw">fn</span> <span class="ident">recreate_panels</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>);

    <span class="kw">fn</span> <span class="ident">can_move_canvas</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
    <span class="kw">fn</span> <span class="ident">can_examine_objects</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
    <span class="kw">fn</span> <span class="ident">has_common</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
    <span class="kw">fn</span> <span class="ident">has_tool_panel</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
    <span class="kw">fn</span> <span class="ident">has_time_panel</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
    <span class="kw">fn</span> <span class="ident">has_speed</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
    <span class="kw">fn</span> <span class="ident">has_agent_meter</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
    <span class="kw">fn</span> <span class="ident">has_minimap</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="bool-val">true</span>
    }
}
<span class="ident">downcast_rs</span>::<span class="macro">impl_downcast</span><span class="macro">!</span>(<span class="ident">GameplayState</span>);

<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">LoadScenario</span> {
    <span class="ident">Nothing</span>,
    <span class="ident">Path</span>(<span class="ident">String</span>),
    <span class="ident">Scenario</span>(<span class="ident">Scenario</span>),
}

<span class="kw">impl</span> <span class="ident">GameplayMode</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">map_name</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">MapName</span> {
        <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">GameplayMode</span>::<span class="ident">Freeform</span>(<span class="kw-2">ref</span> <span class="ident">name</span>) <span class="op">=&gt;</span> <span class="ident">name</span>.<span class="ident">clone</span>(),
            <span class="ident">GameplayMode</span>::<span class="ident">PlayScenario</span>(<span class="kw-2">ref</span> <span class="ident">name</span>, <span class="kw">_</span>, <span class="kw">_</span>) <span class="op">=&gt;</span> <span class="ident">name</span>.<span class="ident">clone</span>(),
            <span class="ident">GameplayMode</span>::<span class="ident">FixTrafficSignals</span> <span class="op">=&gt;</span> <span class="ident">MapName</span>::<span class="ident">seattle</span>(<span class="string">&quot;downtown&quot;</span>),
            <span class="ident">GameplayMode</span>::<span class="ident">OptimizeCommute</span>(<span class="kw">_</span>, <span class="kw">_</span>) <span class="op">=&gt;</span> <span class="ident">MapName</span>::<span class="ident">seattle</span>(<span class="string">&quot;montlake&quot;</span>),
            <span class="ident">GameplayMode</span>::<span class="ident">Tutorial</span>(<span class="kw">_</span>) <span class="op">=&gt;</span> <span class="ident">MapName</span>::<span class="ident">seattle</span>(<span class="string">&quot;montlake&quot;</span>),
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">scenario</span>(
        <span class="kw-2">&amp;</span><span class="self">self</span>,
        <span class="ident">map</span>: <span class="kw-2">&amp;</span><span class="ident">Map</span>,
        <span class="ident">num_agents</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">usize</span><span class="op">&gt;</span>,
        <span class="kw-2">mut</span> <span class="ident">rng</span>: <span class="ident">XorShiftRng</span>,
        <span class="ident">timer</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">Timer</span>,
    ) <span class="op">-&gt;</span> <span class="ident">LoadScenario</span> {
        <span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">GameplayMode</span>::<span class="ident">Freeform</span>(<span class="kw">_</span>) <span class="op">=&gt;</span> {
                <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">s</span> <span class="op">=</span> <span class="ident">Scenario</span>::<span class="ident">empty</span>(<span class="ident">map</span>, <span class="string">&quot;empty&quot;</span>);
                <span class="ident">s</span>.<span class="ident">only_seed_buses</span> <span class="op">=</span> <span class="prelude-val">None</span>;
                <span class="kw">return</span> <span class="ident">LoadScenario</span>::<span class="ident">Scenario</span>(<span class="ident">s</span>);
            }
            <span class="ident">GameplayMode</span>::<span class="ident">PlayScenario</span>(<span class="kw">_</span>, <span class="kw-2">ref</span> <span class="ident">scenario</span>, <span class="kw">_</span>) <span class="op">=&gt;</span> <span class="ident">scenario</span>.<span class="ident">to_string</span>(),
            <span class="comment">// TODO Some of these WILL have scenarios!</span>
            <span class="ident">GameplayMode</span>::<span class="ident">Tutorial</span>(<span class="kw">_</span>) <span class="op">=&gt;</span> {
                <span class="kw">return</span> <span class="ident">LoadScenario</span>::<span class="ident">Nothing</span>;
            }
            <span class="kw">_</span> <span class="op">=&gt;</span> <span class="string">&quot;weekday&quot;</span>.<span class="ident">to_string</span>(),
        };
        <span class="kw">if</span> <span class="ident">name</span> <span class="op">==</span> <span class="string">&quot;random&quot;</span> {
            <span class="ident">LoadScenario</span>::<span class="ident">Scenario</span>(
                (<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">n</span>) <span class="op">=</span> <span class="ident">num_agents</span> {
                    <span class="ident">ScenarioGenerator</span>::<span class="ident">scaled_run</span>(<span class="ident">n</span>)
                } <span class="kw">else</span> {
                    <span class="ident">ScenarioGenerator</span>::<span class="ident">small_run</span>(<span class="ident">map</span>)
                })
                .<span class="ident">generate</span>(<span class="ident">map</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">rng</span>, <span class="ident">timer</span>),
            )
        } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">name</span> <span class="op">==</span> <span class="string">&quot;home_to_work&quot;</span> {
            <span class="ident">LoadScenario</span>::<span class="ident">Scenario</span>(<span class="ident">ScenarioGenerator</span>::<span class="ident">proletariat_robot</span>(<span class="ident">map</span>, <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">rng</span>, <span class="ident">timer</span>))
        } <span class="kw">else</span> {
            <span class="ident">LoadScenario</span>::<span class="ident">Path</span>(<span class="ident">abstutil</span>::<span class="ident">path_scenario</span>(<span class="ident">map</span>.<span class="ident">get_name</span>(), <span class="kw-2">&amp;</span><span class="ident">name</span>))
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">can_edit_lanes</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">GameplayMode</span>::<span class="ident">FixTrafficSignals</span> <span class="op">=&gt;</span> <span class="bool-val">false</span>,
            <span class="kw">_</span> <span class="op">=&gt;</span> <span class="bool-val">true</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">can_edit_stop_signs</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">GameplayMode</span>::<span class="ident">FixTrafficSignals</span> <span class="op">=&gt;</span> <span class="bool-val">false</span>,
            <span class="kw">_</span> <span class="op">=&gt;</span> <span class="bool-val">true</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">can_jump_to_time</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">GameplayMode</span>::<span class="ident">Freeform</span>(<span class="kw">_</span>) <span class="op">=&gt;</span> <span class="bool-val">false</span>,
            <span class="kw">_</span> <span class="op">=&gt;</span> <span class="bool-val">true</span>,
        }
    }

    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">allows</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">edits</span>: <span class="kw-2">&amp;</span><span class="ident">MapEdits</span>) <span class="op">-&gt;</span> <span class="ident">bool</span> {
        <span class="kw">for</span> <span class="ident">cmd</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="ident">edits</span>.<span class="ident">commands</span> {
            <span class="kw">match</span> <span class="ident">cmd</span> {
                <span class="ident">EditCmd</span>::<span class="ident">ChangeRoad</span> { .. } <span class="op">=&gt;</span> {
                    <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">can_edit_lanes</span>() {
                        <span class="kw">return</span> <span class="bool-val">false</span>;
                    }
                }
                <span class="ident">EditCmd</span>::<span class="ident">ChangeIntersection</span> { <span class="kw-2">ref</span> <span class="ident">new</span>, .. } <span class="op">=&gt;</span> <span class="kw">match</span> <span class="ident">new</span> {
                    <span class="comment">// TODO Conflating construction</span>
                    <span class="ident">EditIntersection</span>::<span class="ident">StopSign</span>(<span class="kw">_</span>) <span class="op">|</span> <span class="ident">EditIntersection</span>::<span class="ident">Closed</span> <span class="op">=&gt;</span> {
                        <span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">can_edit_stop_signs</span>() {
                            <span class="kw">return</span> <span class="bool-val">false</span>;
                        }
                    }
                    <span class="kw">_</span> <span class="op">=&gt;</span> {}
                },
                <span class="ident">EditCmd</span>::<span class="ident">ChangeRouteSchedule</span> { .. } <span class="op">=&gt;</span> {}
            }
        }
        <span class="bool-val">true</span>
    }

    <span class="doccomment">/// Must be called after the scenario has been setup. The caller will call recreate_panels</span>
    <span class="doccomment">/// after this, so each constructor doesn&#39;t need to.</span>
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">initialize</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">App</span>) <span class="op">-&gt;</span> <span class="ident">Box</span><span class="op">&lt;</span><span class="kw">dyn</span> <span class="ident">GameplayState</span><span class="op">&gt;</span> {
        <span class="kw">match</span> <span class="self">self</span> {
            <span class="ident">GameplayMode</span>::<span class="ident">Freeform</span>(<span class="kw">_</span>) <span class="op">=&gt;</span> <span class="ident">freeform</span>::<span class="ident">Freeform</span>::<span class="ident">new</span>(<span class="ident">ctx</span>),
            <span class="ident">GameplayMode</span>::<span class="ident">PlayScenario</span>(<span class="kw">_</span>, <span class="kw-2">ref</span> <span class="ident">scenario</span>, <span class="kw-2">ref</span> <span class="ident">modifiers</span>) <span class="op">=&gt;</span> {
                <span class="ident">play_scenario</span>::<span class="ident">PlayScenario</span>::<span class="ident">new</span>(<span class="ident">ctx</span>, <span class="ident">scenario</span>, <span class="ident">modifiers</span>.<span class="ident">clone</span>())
            }
            <span class="ident">GameplayMode</span>::<span class="ident">FixTrafficSignals</span> <span class="op">=&gt;</span> {
                <span class="ident">fix_traffic_signals</span>::<span class="ident">FixTrafficSignals</span>::<span class="ident">new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>)
            }
            <span class="ident">GameplayMode</span>::<span class="ident">OptimizeCommute</span>(<span class="ident">p</span>, <span class="ident">goal</span>) <span class="op">=&gt;</span> {
                <span class="ident">commute</span>::<span class="ident">OptimizeCommute</span>::<span class="ident">new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>, <span class="kw-2">*</span><span class="ident">p</span>, <span class="kw-2">*</span><span class="ident">goal</span>)
            }
            <span class="ident">GameplayMode</span>::<span class="ident">Tutorial</span>(<span class="ident">current</span>) <span class="op">=&gt;</span> <span class="ident">Tutorial</span>::<span class="ident">new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>, <span class="kw-2">*</span><span class="ident">current</span>),
        }
    }
}

<span class="kw">fn</span> <span class="ident">challenge_header</span>(<span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>, <span class="ident">title</span>: <span class="kw-2">&amp;</span><span class="ident">str</span>) <span class="op">-&gt;</span> <span class="ident">Widget</span> {
    <span class="ident">Widget</span>::<span class="ident">row</span>(<span class="macro">vec</span><span class="macro">!</span>[
        <span class="ident">Line</span>(<span class="ident">title</span>).<span class="ident">small_heading</span>().<span class="ident">draw</span>(<span class="ident">ctx</span>).<span class="ident">centered_vert</span>(),
        <span class="ident">Btn</span>::<span class="ident">svg_def</span>(<span class="string">&quot;system/assets/tools/info.svg&quot;</span>)
            .<span class="ident">build</span>(<span class="ident">ctx</span>, <span class="string">&quot;instructions&quot;</span>, <span class="prelude-val">None</span>)
            .<span class="ident">centered_vert</span>(),
        <span class="ident">Widget</span>::<span class="ident">vert_separator</span>(<span class="ident">ctx</span>, <span class="number">50.0</span>),
        <span class="ident">Btn</span>::<span class="ident">svg_def</span>(<span class="string">&quot;system/assets/tools/edit_map.svg&quot;</span>)
            .<span class="ident">build</span>(<span class="ident">ctx</span>, <span class="string">&quot;edit map&quot;</span>, <span class="ident">lctrl</span>(<span class="ident">Key</span>::<span class="ident">E</span>))
            .<span class="ident">centered_vert</span>(),
    ])
    .<span class="ident">padding</span>(<span class="number">5</span>)
}

<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FinalScore</span> {
    <span class="ident">panel</span>: <span class="ident">Panel</span>,
    <span class="ident">retry</span>: <span class="ident">GameplayMode</span>,
    <span class="ident">next_mode</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">GameplayMode</span><span class="op">&gt;</span>,

    <span class="ident">chose_next</span>: <span class="ident">bool</span>,
    <span class="ident">chose_back_to_challenges</span>: <span class="ident">bool</span>,
}

<span class="kw">impl</span> <span class="ident">FinalScore</span> {
    <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(
        <span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>,
        <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>,
        <span class="ident">msg</span>: <span class="ident">String</span>,
        <span class="ident">mode</span>: <span class="ident">GameplayMode</span>,
        <span class="ident">next_mode</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">GameplayMode</span><span class="op">&gt;</span>,
    ) <span class="op">-&gt;</span> <span class="ident">Box</span><span class="op">&lt;</span><span class="kw">dyn</span> <span class="ident">State</span><span class="op">&lt;</span><span class="ident">App</span><span class="op">&gt;&gt;</span> {
        <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">FinalScore</span> {
            <span class="ident">panel</span>: <span class="ident">Panel</span>::<span class="ident">new</span>(
                <span class="ident">Widget</span>::<span class="ident">custom_row</span>(<span class="macro">vec</span><span class="macro">!</span>[
                    <span class="ident">Widget</span>::<span class="ident">draw_batch</span>(
                        <span class="ident">ctx</span>,
                        <span class="ident">GeomBatch</span>::<span class="ident">load_svg</span>(<span class="ident">ctx</span>.<span class="ident">prerender</span>, <span class="string">&quot;system/assets/characters/boss.svg&quot;</span>)
                            .<span class="ident">scale</span>(<span class="number">0.75</span>)
                            .<span class="ident">autocrop</span>(),
                    )
                    .<span class="ident">container</span>()
                    .<span class="ident">outline</span>(<span class="number">10.0</span>, <span class="ident">Color</span>::<span class="ident">BLACK</span>)
                    .<span class="ident">padding</span>(<span class="number">10</span>),
                    <span class="ident">Widget</span>::<span class="ident">col</span>(<span class="macro">vec</span><span class="macro">!</span>[
                        <span class="ident">msg</span>.<span class="ident">draw_text</span>(<span class="ident">ctx</span>),
                        <span class="comment">// TODO Adjust wording</span>
                        <span class="ident">Btn</span>::<span class="ident">text_bg2</span>(<span class="string">&quot;Keep simulating&quot;</span>).<span class="ident">build_def</span>(<span class="ident">ctx</span>, <span class="prelude-val">None</span>),
                        <span class="ident">Btn</span>::<span class="ident">text_bg2</span>(<span class="string">&quot;Try again&quot;</span>).<span class="ident">build_def</span>(<span class="ident">ctx</span>, <span class="prelude-val">None</span>),
                        <span class="kw">if</span> <span class="ident">next_mode</span>.<span class="ident">is_some</span>() {
                            <span class="ident">Btn</span>::<span class="ident">text_bg2</span>(<span class="string">&quot;Next challenge&quot;</span>).<span class="ident">build_def</span>(<span class="ident">ctx</span>, <span class="prelude-val">None</span>)
                        } <span class="kw">else</span> {
                            <span class="ident">Widget</span>::<span class="ident">nothing</span>()
                        },
                        <span class="ident">Btn</span>::<span class="ident">text_bg2</span>(<span class="string">&quot;Back to challenges&quot;</span>).<span class="ident">build_def</span>(<span class="ident">ctx</span>, <span class="prelude-val">None</span>),
                    ])
                    .<span class="ident">outline</span>(<span class="number">10.0</span>, <span class="ident">Color</span>::<span class="ident">BLACK</span>)
                    .<span class="ident">padding</span>(<span class="number">10</span>),
                ])
                .<span class="ident">bg</span>(<span class="ident">app</span>.<span class="ident">cs</span>.<span class="ident">panel_bg</span>),
            )
            .<span class="ident">build_custom</span>(<span class="ident">ctx</span>),
            <span class="ident">retry</span>: <span class="ident">mode</span>,
            <span class="ident">next_mode</span>,
            <span class="ident">chose_next</span>: <span class="bool-val">false</span>,
            <span class="ident">chose_back_to_challenges</span>: <span class="bool-val">false</span>,
        })
    }
}

<span class="kw">impl</span> <span class="ident">State</span><span class="op">&lt;</span><span class="ident">App</span><span class="op">&gt;</span> <span class="kw">for</span> <span class="ident">FinalScore</span> {
    <span class="kw">fn</span> <span class="ident">event</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">ctx</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">EventCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">App</span>) <span class="op">-&gt;</span> <span class="ident">Transition</span> {
        <span class="kw">match</span> <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">event</span>(<span class="ident">ctx</span>) {
            <span class="ident">Outcome</span>::<span class="ident">Clicked</span>(<span class="ident">x</span>) <span class="op">=&gt;</span> <span class="kw">match</span> <span class="ident">x</span>.<span class="ident">as_ref</span>() {
                <span class="string">&quot;Keep simulating&quot;</span> <span class="op">=&gt;</span> {
                    <span class="kw">return</span> <span class="ident">Transition</span>::<span class="ident">Pop</span>;
                }
                <span class="string">&quot;Try again&quot;</span> <span class="op">=&gt;</span> {
                    <span class="kw">return</span> <span class="ident">Transition</span>::<span class="ident">Multi</span>(<span class="macro">vec</span><span class="macro">!</span>[
                        <span class="ident">Transition</span>::<span class="ident">Pop</span>,
                        <span class="ident">Transition</span>::<span class="ident">Replace</span>(<span class="ident">SandboxMode</span>::<span class="ident">simple_new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>, <span class="self">self</span>.<span class="ident">retry</span>.<span class="ident">clone</span>())),
                    ]);
                }
                <span class="string">&quot;Next challenge&quot;</span> <span class="op">=&gt;</span> {
                    <span class="self">self</span>.<span class="ident">chose_next</span> <span class="op">=</span> <span class="bool-val">true</span>;
                    <span class="kw">if</span> <span class="ident">app</span>.<span class="ident">primary</span>.<span class="ident">map</span>.<span class="ident">unsaved_edits</span>() {
                        <span class="kw">return</span> <span class="ident">Transition</span>::<span class="ident">Push</span>(<span class="ident">SaveEdits</span>::<span class="ident">new</span>(
                            <span class="ident">ctx</span>,
                            <span class="ident">app</span>,
                            <span class="string">&quot;Do you want to save your proposal first?&quot;</span>,
                            <span class="bool-val">true</span>,
                            <span class="prelude-val">None</span>,
                            <span class="ident">Box</span>::<span class="ident">new</span>(<span class="op">|</span><span class="kw">_</span>, <span class="kw">_</span><span class="op">|</span> {}),
                        ));
                    }
                }
                <span class="string">&quot;Back to challenges&quot;</span> <span class="op">=&gt;</span> {
                    <span class="self">self</span>.<span class="ident">chose_back_to_challenges</span> <span class="op">=</span> <span class="bool-val">true</span>;
                    <span class="kw">if</span> <span class="ident">app</span>.<span class="ident">primary</span>.<span class="ident">map</span>.<span class="ident">unsaved_edits</span>() {
                        <span class="kw">return</span> <span class="ident">Transition</span>::<span class="ident">Push</span>(<span class="ident">SaveEdits</span>::<span class="ident">new</span>(
                            <span class="ident">ctx</span>,
                            <span class="ident">app</span>,
                            <span class="string">&quot;Do you want to save your proposal first?&quot;</span>,
                            <span class="bool-val">true</span>,
                            <span class="prelude-val">None</span>,
                            <span class="ident">Box</span>::<span class="ident">new</span>(<span class="op">|</span><span class="kw">_</span>, <span class="kw">_</span><span class="op">|</span> {}),
                        ));
                    }
                }
                <span class="kw">_</span> <span class="op">=&gt;</span> <span class="macro">unreachable</span><span class="macro">!</span>(),
            },
            <span class="kw">_</span> <span class="op">=&gt;</span> {}
        }

        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">chose_next</span> <span class="op">||</span> <span class="self">self</span>.<span class="ident">chose_back_to_challenges</span> {
            <span class="ident">app</span>.<span class="ident">clear_everything</span>(<span class="ident">ctx</span>);
        }

        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">chose_next</span> {
            <span class="kw">return</span> <span class="ident">Transition</span>::<span class="ident">Clear</span>(<span class="macro">vec</span><span class="macro">!</span>[
                <span class="ident">MainMenu</span>::<span class="ident">new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>),
                <span class="comment">// Constructing the cutscene doesn&#39;t require the map/scenario to be loaded.</span>
                <span class="ident">SandboxMode</span>::<span class="ident">simple_new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>, <span class="self">self</span>.<span class="ident">next_mode</span>.<span class="ident">clone</span>().<span class="ident">unwrap</span>()),
                (<span class="ident">Challenge</span>::<span class="ident">find</span>(<span class="self">self</span>.<span class="ident">next_mode</span>.<span class="ident">as_ref</span>().<span class="ident">unwrap</span>())
                    .<span class="number">0</span>
                    .<span class="ident">cutscene</span>
                    .<span class="ident">unwrap</span>())(<span class="ident">ctx</span>, <span class="ident">app</span>, <span class="self">self</span>.<span class="ident">next_mode</span>.<span class="ident">as_ref</span>().<span class="ident">unwrap</span>()),
            ]);
        }
        <span class="kw">if</span> <span class="self">self</span>.<span class="ident">chose_back_to_challenges</span> {
            <span class="kw">return</span> <span class="ident">Transition</span>::<span class="ident">Clear</span>(<span class="macro">vec</span><span class="macro">!</span>[
                <span class="ident">MainMenu</span>::<span class="ident">new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>),
                <span class="ident">ChallengesPicker</span>::<span class="ident">new</span>(<span class="ident">ctx</span>, <span class="ident">app</span>),
            ]);
        }

        <span class="ident">Transition</span>::<span class="ident">Keep</span>
    }

    <span class="kw">fn</span> <span class="ident">draw</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">g</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">GfxCtx</span>, <span class="ident">app</span>: <span class="kw-2">&amp;</span><span class="ident">App</span>) {
        <span class="comment">// Happens to be a nice background color too ;)</span>
        <span class="ident">g</span>.<span class="ident">clear</span>(<span class="ident">app</span>.<span class="ident">cs</span>.<span class="ident">dialog_bg</span>);
        <span class="self">self</span>.<span class="ident">panel</span>.<span class="ident">draw</span>(<span class="ident">g</span>);
    }
}
</pre></div>
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