Added texture, assets, tools and texture loading.

src/dawntools/file/CMakeLists.txt

@@ -0,0 +1,27 @@
+# Copyright (c) 2022 Dominic Msters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+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 ${CMAKE_COMMAND} -E copy "${from}" "${ASSETS_BUILD_DIR}/${to}"
+      COMMENT "Copying ${from} => ${to}"
+    )
+  endforeach()
+
+  add_custom_target(${target}
+    DEPENDS ${LOOP_DEPENDENCIES}
+    COMMENT "Creating dependency set ${target}"
+  )
+endfunction()