diff --git a/src/cell.rs b/src/cell.rs
index 695093a..02fcf57 100644
--- a/src/cell.rs
+++ b/src/cell.rs
@@ -24,3 +24,21 @@ pub fn init_grid() -> Vec<Vec<Cell>> {
     }
     grid
 }
+
+fn map_num(n: usize, s: usize, e: usize, a: usize, b: usize) -> usize {
+    (a as f64 + (n as f64 - s as f64) * (b as f64 - a as f64) / (e as f64 - s as f64)) as usize
+}
+
+pub fn display_grid(grid: &Vec<Vec<Cell>>) {
+    for i in 0..HEIGHT {
+        for j in 0..WIDTH {
+            let x = i as usize;
+            let y = j as usize;
+            let state = grid[x][y].state as usize;
+
+            let index = map_num(state, 0, Q, 0, BRIGHTNESS.len());
+            print!("{}", BRIGHTNESS.chars().nth(index).unwrap());
+        }
+        println!();
+    }
+}