Tests and csm build options

engine/core.scm

@@ -101,7 +101,7 @@
   (add-queued-entities))
 
 ;; Entity creation/removal interface
-(export create-named-entity create-entity remove-entity)
+(export create-named-entity create-entity remove-entity clear-world)
 
 ;; Create an entity in the world and return it's ID
 (define (create-named-entity id . components)
@@ -323,12 +323,17 @@
 	  event)
 	#f)))
 
-;; Frame generation interface
-(export next-frame)
+;; Frame generation and game loop
+(export resolve-queues next-frame)
+
+;; Resolve the entity and system queues. This is exported which allows breaking iteration
+(define (resolve-queues)
+  (resolve-entity-queue)
+  (resolve-system-queue))
+
 ;; Generate the next frame, for use in the main game loop
 (define (next-frame)
-  (resolve-entity-queue)
-  (resolve-system-queue)
+  (resolve-queues)
   (with-drawing
    (execute-systems)))
 )