Almost forgot: WorldTick hook, since ZScript doesn't have delays

src/events.cpp

@@ -262,6 +262,7 @@ void E_WorldThingDestroyed(AActor* actor)
 // normal event loopers (non-special, argument-less)
 DEFINE_EVENT_LOOPER(RenderFrame)
 DEFINE_EVENT_LOOPER(WorldLightning)
+DEFINE_EVENT_LOOPER(WorldTick)
 
 // declarations
 IMPLEMENT_CLASS(DStaticEventHandler, false, false);
@@ -400,6 +401,7 @@ DEFINE_EMPTY_HANDLER(DStaticEventHandler, WorldThingSpawned)
 DEFINE_EMPTY_HANDLER(DStaticEventHandler, WorldThingDied)
 DEFINE_EMPTY_HANDLER(DStaticEventHandler, WorldThingDestroyed)
 DEFINE_EMPTY_HANDLER(DStaticEventHandler, WorldLightning)
+DEFINE_EMPTY_HANDLER(DStaticEventHandler, WorldTick)
 DEFINE_EMPTY_HANDLER(DStaticEventHandler, RenderFrame)
 
 // ===========================================
@@ -500,6 +502,19 @@ void DStaticEventHandler::WorldLightning()
 	}
 }
 
+void DStaticEventHandler::WorldTick()
+{
+	IFVIRTUAL(DStaticEventHandler, WorldTick)
+	{
+		// don't create excessive DObjects if not going to be processed anyway
+		if (func == DStaticEventHandler_WorldTick_VMPtr)
+			return;
+		DWorldEvent* e = E_SetupWorldEvent();
+		VMValue params[2] = { (DStaticEventHandler*)this, e };
+		GlobalVMStack.Call(func, params, 2, nullptr, 0, nullptr);
+	}
+}
+
 static DRenderEvent* E_SetupRenderEvent()
 {
 	static DRenderEvent* e = nullptr;
@@ -532,44 +547,3 @@ void DStaticEventHandler::OnDestroy()
 	E_UnregisterHandler(this);
 	Super::OnDestroy();
 }
-/*
-void DStaticRenderEventHandler::Setup()
-{
-	ViewPos = ::ViewPos;
-	ViewAngle = ::ViewAngle;
-	ViewPitch = ::ViewPitch;
-	ViewRoll = ::ViewRoll;
-	FracTic = ::r_TicFracF;
-	Camera = ::camera;
-}
-
-void DStaticRenderEventHandler::RenderFrame()
-{
-	Setup();
-	Super::RenderFrame();
-}
-
-void DStaticWorldEventHandler::Setup()
-{
-	IsSaveGame = savegamerestore;
-	Thing = nullptr;
-}
-
-void DStaticWorldEventHandler::WorldLoaded()
-{
-	Setup();
-	Super::WorldLoaded();
-}
-
-void DStaticWorldEventHandler::WorldUnloaded()
-{
-	Setup();
-	Super::WorldUnloaded();
-}
-
-void DStaticWorldEventHandler::WorldThingSpawned(AActor* actor)
-{
-	Setup();
-	Thing = actor;
-	Super::WorldThingSpawned(actor);
-}*/

src/events.h

@@ -33,6 +33,8 @@ void E_WorldThingDied(AActor* actor, AActor* inflictor);
 void E_WorldThingDestroyed(AActor* actor);
 // same as ACS SCRIPT_Lightning
 void E_WorldLightning();
+// this executes on every tick, before everything
+void E_WorldTick();
 // called on each render frame once.
 void E_RenderFrame();
 
@@ -86,6 +88,7 @@ public:
 	virtual void WorldThingDied(AActor*, AActor*);
 	virtual void WorldThingDestroyed(AActor*);
 	virtual void WorldLightning();
+	virtual void WorldTick();
 	virtual void RenderFrame();
 };
 class DEventHandler : public DStaticEventHandler

src/p_tick.cpp

@@ -36,6 +36,7 @@
 #include "r_utility.h"
 #include "p_spec.h"
 #include "g_levellocals.h"
+#include "events.h"
 
 extern gamestate_t wipegamestate;
 
@@ -125,6 +126,8 @@ void P_Ticker (void)
 			/*Added by MC: Freeze mode.*/!(bglobal.freeze && players[i].Bot != NULL))
 			P_PlayerThink (&players[i]);
 
+	// [ZZ] call the WorldTick hook
+	E_WorldTick();
 	StatusBar->Tick ();		// [RH] moved this here
 	level.Tick ();			// [RH] let the level tick
 	DThinker::RunThinkers ();

wadsrc/static/zscript/events.txt

@@ -38,6 +38,7 @@ class StaticEventHandler : Object native
     virtual native void WorldThingDied(WorldEvent e);
     virtual native void WorldThingDestroyed(WorldEvent e);
     virtual native void WorldLightning(WorldEvent e); // for the sake of completeness.
+    virtual native void WorldTick(WorldEvent e);
 
     virtual native void RenderFrame(RenderEvent e);
 }