diff --git a/src/action.rs b/src/action.rs
index 8a1adbb..8ce72c4 100644
--- a/src/action.rs
+++ b/src/action.rs
@@ -1,7 +1,4 @@
-pub struct Point {
-    pub x: i32,
-    pub y: i32
-}
+use util::Point;
 
 pub struct Action {
     pub source: Point,
diff --git a/src/block.rs b/src/block.rs
index 5f03f95..59ef69a 100644
--- a/src/block.rs
+++ b/src/block.rs
@@ -1,12 +1,16 @@
 use action::Action;
 use std::vec;
 
+fn make_connections() -> Vec<f64> {
+    vec![0 as f64;9]
+}
+
 trait Block {
     fn get_connections(&self) -> &Vec<f64>;
     fn get_value(&self) -> &f64;
     fn get_name(&self) -> &'static str; 
-    fn compute(&self) -> Vec<Action>;
-    fn clean(&self);
+    fn compute(&mut self) -> Vec<Action>;
+    fn clean(&mut self);
 }
 
 struct NeuronBlock {
@@ -25,8 +29,10 @@ impl Block for NeuronBlock {
     fn get_name(&self) -> &'static str {
         "Neuron"
     }
-    fn compute(&self) -> Vec<Action> {
+    fn compute(&mut self) -> Vec<Action> {
         Vec::new()
     }
-    fn clean(&self) { }
+    fn clean(&mut self) {
+        self.current_value = self.new_value
+    }
 }
diff --git a/src/main.rs b/src/main.rs
index e7ca828..e6c9519 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,4 @@
+mod util;
 mod action;
 mod block;
 
diff --git a/src/util.rs b/src/util.rs
new file mode 100644
index 0000000..30ba658
--- /dev/null
+++ b/src/util.rs
@@ -0,0 +1,4 @@
+pub struct Point {
+    pub x: i32,
+    pub y: i32
+}