diff --git a/Cargo.toml b/Cargo.toml
index 3ac6c3c..29dea0c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,10 +49,11 @@ serde = "1.0.197"
 serde_json = "1.0.115"
 rust-embed = "8.3.0"
 tinyfiledialogs = "3.9.1"
-# regex = { version = "1.10.4", optional = true }
-# telnet = { version = "0.2.1", optional = true }
 
 
+# dt = "1.0.6"
+dt = {git = "https://github.com/iMilchshake/dt"}
+
 
 [dev-dependencies]
 telnet = { version = "0.2.1"}
diff --git a/src/config.rs b/src/config.rs
index 6a3291e..bbb46a4 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -47,6 +47,9 @@ pub struct GenerationConfig {
     /// probability for doing the last shift direction again
     pub momentum_prob: f32,
 
+    /// TODO:
+    pub max_distance: f32,
+
     // ------- TODO: these should go somewhere else -----
     pub waypoints: Vec<Position>,
 }
@@ -103,6 +106,7 @@ impl Default for GenerationConfig {
             step_weights: vec![20, 11, 10, 9],
             platform_distance_bounds: (500, 750),
             momentum_prob: 0.01,
+            max_distance: 3.0,
         }
     }
 }
diff --git a/src/editor.rs b/src/editor.rs
index 44f1c78..64526af 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -127,7 +127,12 @@ pub fn edit_pos_i32(ui: &mut Ui, value: &mut i32) {
     ui.add(egui::DragValue::new(value).clamp_range(0..=isize::max_value()));
 }
 
-pub fn edit_f32(ui: &mut Ui, value: &mut f32) {
+// TODO: IMAGINE having a dynamic range argument.. imagine, that would be nice
+pub fn edit_f32_wtf(ui: &mut Ui, value: &mut f32) {
+    ui.add(egui::Slider::new(value, 0.0..=15.0));
+}
+
+pub fn edit_f32_prob(ui: &mut Ui, value: &mut f32) {
     ui.add(egui::Slider::new(value, 0.0..=1.0));
 }
 
@@ -339,14 +344,14 @@ impl Editor {
                     field_edit_widget(
                         ui,
                         &mut self.config.inner_rad_mut_prob,
-                        edit_f32,
+                        edit_f32_prob,
                         "inner rad mut prob",
                         true,
                     );
                     field_edit_widget(
                         ui,
                         &mut self.config.inner_size_mut_prob,
-                        edit_f32,
+                        edit_f32_prob,
                         "inner size mut prob",
                         true,
                     );
@@ -354,14 +359,14 @@ impl Editor {
                     field_edit_widget(
                         ui,
                         &mut self.config.outer_rad_mut_prob,
-                        edit_f32,
+                        edit_f32_prob,
                         "outer rad mut prob",
                         true,
                     );
                     field_edit_widget(
                         ui,
                         &mut self.config.outer_size_mut_prob,
-                        edit_f32,
+                        edit_f32_prob,
                         "outer size mut prob",
                         true,
                     );
@@ -377,11 +382,27 @@ impl Editor {
                     field_edit_widget(
                         ui,
                         &mut self.config.momentum_prob,
-                        edit_f32,
+                        edit_f32_prob,
+                        "momentum prob",
+                        true,
+                    );
+
+                    field_edit_widget(
+                        ui,
+                        &mut self.config.momentum_prob,
+                        edit_f32_prob,
                         "momentum prob",
                         true,
                     );
 
+                    field_edit_widget(
+                        ui,
+                        &mut self.config.max_distance,
+                        edit_f32_wtf,
+                        "max distance",
+                        true,
+                    );
+
                     // only show these in setup mode
                     ui.add_visible_ui(self.is_setup(), |ui| {
                         vec_edit_widget(
diff --git a/src/generator.rs b/src/generator.rs
index 82af397..d0c6815 100644
--- a/src/generator.rs
+++ b/src/generator.rs
@@ -7,13 +7,13 @@ use crate::{
     walker::CuteWalker,
 };
 
-use ndarray::{s, Array2};
+use dt::{dt, dt_bool, dt_int};
+use ndarray::{arr2, s, Array, Array2, Ix2, IxDyn};
 
 pub struct Generator {
     pub walker: CuteWalker,
     pub map: Map,
     pub rnd: Random,
-    // TODO: should this really be part of the generator?
 }
 
 impl Generator {
@@ -97,7 +97,27 @@ impl Generator {
         Ok(edge_bug)
     }
 
-    pub fn post_processing(&mut self) {
+    pub fn fill_area(&mut self, max_distance: &f32) -> Array2<f32> {
+        let grid = self.map.grid.map(|val| *val != BlockType::Empty);
+
+        let distance = dt_bool::<f32>(&grid.into_dyn())
+            .into_dimensionality::<Ix2>()
+            .unwrap();
+
+        // let max = distance.fold(0.0, |v1, v2| f32::max(v1, *v2));
+
+        self.map
+            .grid
+            .zip_mut_with(&distance, |block_type, distance| {
+                if *block_type == BlockType::Empty && *distance > *max_distance {
+                    *block_type = BlockType::Freeze;
+                }
+            });
+
+        distance
+    }
+
+    pub fn post_processing(&mut self, config: &GenerationConfig) {
         self.fix_edge_bugs().expect("fix edge bugs failed");
         self.map
             .generate_room(&self.map.spawn.clone(), 4, Some(&BlockType::Start))
@@ -105,6 +125,8 @@ impl Generator {
         self.map
             .generate_room(&self.walker.pos.clone(), 4, Some(&BlockType::Finish))
             .expect("start finish room generation");
+
+        self.fill_area(&config.max_distance);
     }
 
     /// Generates an entire map with a single function call. This function is used by the CLI.
@@ -124,7 +146,7 @@ impl Generator {
             gen.step(&config)?;
         }
 
-        gen.post_processing();
+        gen.post_processing(config);
 
         Ok(gen.map)
     }
diff --git a/src/main.rs b/src/main.rs
index 5c2e3e0..4466459 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -88,7 +88,7 @@ async fn main() {
 
         // this is called ONCE after map was generated
         if editor.gen.walker.finished && !editor.is_setup() {
-            editor.gen.post_processing();
+            editor.gen.post_processing(&editor.config);
 
             // switch into setup mode for next map
             editor.set_setup();