switch to using own event system

src/lib/core/CMakeLists.txt

@@ -6,7 +6,6 @@ SET(HDRS
     ${CMAKE_CURRENT_SOURCE_DIR}/EntityAdmin.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Blueprint.h
     ${CMAKE_CURRENT_SOURCE_DIR}/BuildingId.h
-    ${CMAKE_CURRENT_SOURCE_DIR}/FireEvent.h
     ${CMAKE_CURRENT_SOURCE_DIR}/ItemType.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Item.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Port.h

src/lib/core/FireEvent.h

@@ -1,15 +0,0 @@
-#pragma once
-
-#include "Tick.h"
-
-#include "entt/entity/entity.hpp"
-
-// Transient record emitted each time a weapon fires (REQ-SHP-FIRING,
-// REQ-SHP-FIRING-BEAM). Buffered in a sim-owned queue and drained by the
-// renderer each frame to draw the 0.3-second laser beam.
-struct FireEvent
-{
-    entt::entity shooter;
-    entt::entity target;
-    Tick emittedAt;
-};