lib/bucketed_game: revamp constructor of `Buckets`

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/bucketed_game.nit b/lib/bucketed_game.nit
index ae0d792..eba5d69 100644 (file)
--- a/lib/bucketed_game.nit
+++ b/lib/bucketed_game.nit
@@ -48,20 +48,16 @@ class Buckets[G: Game]
        # Bucket type used in this implementation.
        type BUCKET: HashSet[Bucketable[G]]
 
-       private var buckets: Array[BUCKET] is noinit
-
        private var next_bucket: nullable BUCKET = null
        private var current_bucket_key: Int = -1
 
-       init
-       do
-               var n_buckets = 100
-               buckets = new Array[BUCKET].with_capacity(n_buckets)
+       # Number of `buckets`, default at 100
+       #
+       # Must be set prior to using any other methods of this class.
+       var n_buckets = 100
 
-               for b in [0 .. n_buckets [do
-                       buckets[b] = new HashSet[Bucketable[G]]
-               end
-       end
+       private var buckets: Array[BUCKET] =
+               [for b in n_buckets.times do new HashSet[Bucketable[G]]] is lazy
 
        # Add the Bucketable event `e` at `at_tick`.
        fun add_at(e: Bucketable[G], at_tick: Int)