diff --git a/Autoload/Global.gd b/Autoload/Global.gd
index af3b295..916c9a1 100644
--- a/Autoload/Global.gd
+++ b/Autoload/Global.gd
@@ -1,6 +1,6 @@
 extends Node
 
-const SPEED_LIMIT = 4
+const SPEED_LIMIT: int = 4
 
 var Settings: Dictionary = {
         "filename": "save-0001",
diff --git a/Stage/stage.gd b/Stage/stage.gd
index d923d69..8da2ad9 100644
--- a/Stage/stage.gd
+++ b/Stage/stage.gd
@@ -1,6 +1,6 @@
 extends Control
 
-signal produce_items(item_id: String, amount: int)
+#signal produce_items(item_id: String, amount: int)
 
 const OWNIVERSE_ITEM = preload("uid://d3xjfxwe3w16v")
 
diff --git a/project.godot b/project.godot
index 529a2a0..f926f9b 100644
--- a/project.godot
+++ b/project.godot
@@ -17,7 +17,7 @@ compatibility/default_parent_skeleton_in_mesh_instance_3d=true
 config/name="Owniverse"
 config/version="0.6.13"
 run/main_scene="uid://bv384dpmvjv8o"
-config/features=PackedStringArray("4.6", "Mobile")
+config/features=PackedStringArray("4.7", "Mobile")
 boot_splash/show_image=false
 config/icon="uid://do5teb1i7uiuw"
 config/size/borderless=true
@@ -25,7 +25,7 @@ config/stretch_mode=0
 
 [autoload]
 
-Global="*uid://5xb12usvrifm"
+Global="*uid://dojk16crca3cx"
 SaveManager="*uid://ul0srjc4gcgg"
 
 [display]
diff --git a/world/evolution.gd b/world/evolution.gd
new file mode 100644
index 0000000..de8bded
--- /dev/null
+++ b/world/evolution.gd
@@ -0,0 +1,24 @@
+extends Node
+
+class_name OwniverseEvolution
+
+var batch_count: int = 40
+var entity_batches = {}
+
+var distribution: Dictionary[String, float] = {}
+
+
+func update_distribution(_distribute_by: Dictionary[String, float]) -> void:
+    distribution = {}
+    var _total: float = 0
+    for id in _distribute_by:
+        if _distribute_by[id] != 0:
+            var _value: float = _distribute_by[id]
+            _total += _value
+            distribution[id] = _value
+    
+    if _total == 0: return
+    
+    for id in distribution:
+        distribution[id] /= _total
+    
diff --git a/world/evolution.gd.uid b/world/evolution.gd.uid
new file mode 100644
index 0000000..4224459
--- /dev/null
+++ b/world/evolution.gd.uid
@@ -0,0 +1 @@
+uid://mgnxt6kbf80n
diff --git a/world/owniverse.gd b/world/owniverse.gd
index e0687a5..5be3db1 100644
--- a/world/owniverse.gd
+++ b/world/owniverse.gd
@@ -1,10 +1,12 @@
 extends Node
 class_name Owniverse
 
+var evolution: OwniverseEvolution = OwniverseEvolution.new()
+
 signal unlock_item(item_id: String)
 
 var current_year: float = 0
-var current_speed: float = 1
+var current_speed: int = 1
 var current_speed_in_years:float = 1
 
 var entities: Dictionary[String, OwniverseEntity] = {}
@@ -31,21 +33,26 @@ func cycle(year_delta: float) -> void:
     
     _check_locked_items()
     
-    #print(_get_distribution(current_amount))
+    #var v = _get_distribution(current_amount)
+    evolution.update_distribution(current_amount)
+    
+    #for k in current_amount:
+        #if current_amount[k] != 0:
+            #print(k, "|", current_amount[k])
 
 
 #region auto production and evolution
 
 func _auto_production(year_delta: float) -> void:
-    var cycle_production = {"S": 0.0, "H": 0.0}
+    var _cycle_production = {"S": 0.0, "H": 0.0}
     for entity: OwniverseEntity in auto_production:
         if current_amount[entity.id] == 0:
             continue 
-        cycle_production[entity.product_per_year_type] += \
+        _cycle_production[entity.product_per_year_type] += \
             current_amount[entity.id] * entity.product_per_year_amount * year_delta
     
-    for item in cycle_production:
-        _count_amount(item, cycle_production[item])        
+    for item in _cycle_production:
+        _count_amount(item, _cycle_production[item])        
                 
 
 func _entity_evolution(year_delta: float) -> void:
@@ -140,8 +147,8 @@ func add_time_delta(delta) -> float:
     return current_year
 
 
-func change_speed(delta: int) -> float:
-    current_speed = clamp(current_speed + delta, 1, Global.SPEED_LIMIT)
+func change_speed(delta: int) -> int:
+    current_speed = clampi(current_speed + delta, 1, Global.SPEED_LIMIT)
     current_speed_in_years = pow(10, current_speed - 1)
     return current_speed
 
@@ -210,6 +217,6 @@ func init_enitities() -> void:
 
         #if entity.event_group != "":
             #entity_event_groups.append(entity.id)
-    print(entity_groups)
-    print(entity_event_groups)
+    #print(entity_groups)
+    #print(entity_event_groups)
 #endregion