diff --git a/example/resource/archery.png b/example/resource/ARCHERY.png similarity index 100% rename from example/resource/archery.png rename to example/resource/ARCHERY.png diff --git a/example/resource/barracks.png b/example/resource/BARRACKS.png similarity index 100% rename from example/resource/barracks.png rename to example/resource/BARRACKS.png diff --git a/example/resource/blacksmith.png b/example/resource/BLACKSMITH.png similarity index 100% rename from example/resource/blacksmith.png rename to example/resource/BLACKSMITH.png diff --git a/example/resource/castle.png b/example/resource/CASTLE.png similarity index 100% rename from example/resource/castle.png rename to example/resource/CASTLE.png diff --git a/example/resource/house_1.png b/example/resource/HOUSE_1.png similarity index 100% rename from example/resource/house_1.png rename to example/resource/HOUSE_1.png diff --git a/example/resource/house_2.png b/example/resource/HOUSE_2.png similarity index 100% rename from example/resource/house_2.png rename to example/resource/HOUSE_2.png diff --git a/example/resource/house_3.png b/example/resource/HOUSE_3.png similarity index 100% rename from example/resource/house_3.png rename to example/resource/HOUSE_3.png diff --git a/example/resource/stable.png b/example/resource/STABLE.png similarity index 100% rename from example/resource/stable.png rename to example/resource/STABLE.png diff --git a/example/resource/terrain.png b/example/resource/TERRAIN.png similarity index 100% rename from example/resource/terrain.png rename to example/resource/TERRAIN.png diff --git a/example/resource/tree_1.png b/example/resource/TREE_1.png similarity index 100% rename from example/resource/tree_1.png rename to example/resource/TREE_1.png diff --git a/example/resource/tree_2.png b/example/resource/TREE_2.png similarity index 100% rename from example/resource/tree_2.png rename to example/resource/TREE_2.png diff --git a/example/resource/tree_3.png b/example/resource/TREE_3.png similarity index 100% rename from example/resource/tree_3.png rename to example/resource/TREE_3.png