Add hot reloading support

src/openrct2/scripting/ScriptEngine.cpp

@@ -11,6 +11,7 @@
 #include "../core/FileScanner.h"
 #include "../core/Path.hpp"
 #include "../interface/InteractiveConsole.h"
+#include "../platform/Platform2.h"
 #include "../PlatformEnvironment.h"
 #include <dukglue/dukglue.h>
 #include <duktape.h>
@@ -67,6 +68,7 @@ void ScriptEngine::LoadPlugins()
         {
             Plugin p(_context, path);
             p.Load();
+            p.EnableHotReload();
             _plugins.push_back(std::move(p));
         }
         catch (const std::exception &e)
@@ -76,6 +78,25 @@ void ScriptEngine::LoadPlugins()
     }
 }
 
+void ScriptEngine::AutoReloadPlugins()
+{
+    for (auto& plugin : _plugins)
+    {
+        if (plugin.ShouldHotReload())
+        {
+            try
+            {
+                plugin.Load();
+                plugin.Start();
+            }
+            catch (const std::exception &e)
+            {
+                _console.WriteLineError(e.what());
+            }
+        }
+    }
+}
+
 void ScriptEngine::StartPlugins()
 {
     for (auto& plugin : _plugins)
@@ -111,6 +132,13 @@ void ScriptEngine::Update()
         // Signal the promise so caller can continue
         promise.set_value();
     }
+
+    auto tick = Platform::GetTicks();
+    if (tick - _lastHotReloadCheckTick > 1000)
+    {
+        AutoReloadPlugins();
+        _lastHotReloadCheckTick = tick;
+    }
 }
 
 std::future<void> ScriptEngine::Eval(const std::string &s)