Moved 'building' entity definitions into 'structures', renamed building component to structure, moved svgs the same.

lib/components/spawner.rb

@@ -5,7 +5,7 @@ class IMICRTS
 
       return unless item
 
-      item.progress += 1 if @parent.component(:building).construction_complete?
+      item.progress += 1 if @parent.component(:structure).construction_complete?
 
       return unless item.progress >= item.entity.build_steps && !item.completed
 

lib/components/structure.rb

@@ -1,5 +1,5 @@
 class IMICRTS
-  class Building < Component
+  class Structure < Component
     def setup
       data.construction_progress ||= 0
       data.construction_goal ||= Entity.get(@parent.name).build_steps
@@ -18,7 +18,7 @@ class IMICRTS
         @text.x = @parent.position.x - @text.width / 2
         @text.draw
       when :deconstruct
-      when :building
+      when :structure
       when :idle
       else
         raise "Unknown state!"