Doing some code reshuffling

tools/file/CMakeLists.txt

@@ -9,4 +9,27 @@ function(tool_assets args)
     DEPENDS ${ARGV}
     COMMENT "Compressing Assets"
   )
+endfunction()
+
+function(tool_copy target)
+  math(EXPR CARGSN "${ARGC} - 1")
+  set(LOOP_DEPENDENCIES)
+  
+  foreach(index RANGE 1 ${CARGSN} 2)
+    math(EXPR indexnext "${index} + 1")
+    set(LOOP_TARGET "item_${target}_${index}")
+
+    LIST(GET ARGV ${index} from)
+    LIST(GET ARGV ${indexnext} to)
+    LIST(APPEND LOOP_DEPENDENCIES ${LOOP_TARGET})
+    add_custom_command(OUTPUT ${LOOP_TARGET}
+      COMMAND ${CMAKE_COMMAND} -E copy "${ROOT_DIR}/${ASSETS_DIR}/${from}" "${ASSETS_DIR}/${to}"
+      COMMENT "Copying ${from} => ${to}"
+    )
+  endforeach()
+
+  add_custom_target(${target}
+    DEPENDS ${MY_LIST}
+    COMMENT "Copying ${FILE_NAME}"
+  )
 endfunction()