share the world shapes both views (game and balancing) draw identically

src/ui/CMakeLists.txt

@@ -7,6 +7,7 @@ SET(HDRS
     ${CMAKE_CURRENT_SOURCE_DIR}/ModalPauseScope.h
     ${CMAKE_CURRENT_SOURCE_DIR}/GameWorldView.h
     ${CMAKE_CURRENT_SOURCE_DIR}/InputMapper.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/WorldPrimitives.h
     ${CMAKE_CURRENT_SOURCE_DIR}/HeaderBar.h
     ${CMAKE_CURRENT_SOURCE_DIR}/BuildButtonGrid.h
     ${CMAKE_CURRENT_SOURCE_DIR}/SelectedBuildingPanel.h
@@ -30,6 +31,7 @@ SET(SRCS
     ${CMAKE_CURRENT_SOURCE_DIR}/ModalDimOverlay.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/GameWorldView.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/InputMapper.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/WorldPrimitives.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/HeaderBar.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/BuildButtonGrid.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/SelectedBuildingPanel.cpp