diff --git a/src/main.rs b/src/main.rs
index f8634fb..ae41baa 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,10 +6,10 @@ use raylib::prelude::*;
 mod marble_engine;
 
 fn main() {
-	let (mut rl, thread) = raylib::init().resizable().title("Hello, World").build();
+	let (mut rl, thread) = raylib::init().resizable().title("good window title").build();
 	rl.set_target_fps(60);
 
-	let board = parse(&read_to_string("boards/flow.mbl").unwrap());
+	let board = parse(&read_to_string("boards/adder.mbl").unwrap());
 	let mut pos_offset = Vector2::zero();
 	let mut machine = marble_engine::Machine::new(board, "Vec::new()".bytes().collect());
 
@@ -28,7 +28,6 @@ fn main() {
 		d.clear_background(Color::new(64, 64, 64, 255));
 
 		machine.draw(&mut d, pos_offset);
-		d.draw_text("Hello, world!", 12, 12, 20, Color::WHITE);
 
 		d.draw_fps(2, 2);
 	}
diff --git a/src/marble_engine.rs b/src/marble_engine.rs
index ceb9f87..c8b043d 100644
--- a/src/marble_engine.rs
+++ b/src/marble_engine.rs
@@ -67,7 +67,7 @@ impl Machine {
 		for y in 0..self.board.height() {
 			for x in 0..self.board.width() {
 				match self.board.get_mut((x, y).into()) {
-					Tile::Wire(_, state) => *state = false,
+					Tile::Powerable(_, state) => *state = false,
 					Tile::Trigger(state) => *state = false,
 					_ => (),
 				}
@@ -103,7 +103,7 @@ impl Machine {
 						self.marbles[i] = next_pos;
 						new_tile = Some(Tile::Blank);
 					}
-					Tile::Bag => {
+					Tile::Powerable(PTile::Bag, _) => {
 						to_remove.push(i);
 						new_tile = Some(Tile::Blank);
 					}
@@ -190,107 +190,102 @@ impl Machine {
 		}
 		let tile = self.board.get_mut(pos);
 		let front_pos = dir.step(pos);
-		match tile {
-			Tile::Wire(wiretype, state) => {
-				if *state {
-					return;
-				}
-				*state = true;
-				let dirs = wiretype.directions();
-				for d in dirs {
-					self.propagate_power(*d, d.step(pos));
-				}
+		if let Tile::Powerable(tile, state) = tile {
+			if *state {
+				return;
 			}
-			Tile::Print => {
-				let sample = self.board.get_or_blank(front_pos);
-				if let Tile::Marble { value, dir: _ } = sample {
-					self.output.push(value as u8);
+			*state = true;
+			match tile {
+				PTile::Wire(wiretype) => {
+					let dirs = wiretype.directions();
+					for d in dirs {
+						self.propagate_power(*d, d.step(pos));
+					}
 				}
-			}
-			Tile::Bag => {
-				if let Some(Tile::Blank) = self.board.get(front_pos) {
-					*self.board.get_mut(front_pos) = Tile::Marble { value: 0, dir };
-					self.marbles.push(front_pos);
+				PTile::Output => {
+					let sample = self.board.get_or_blank(front_pos);
+					if let Tile::Marble { value, dir: _ } = sample {
+						self.output.push(value as u8);
+					}
 				}
-			}
-			Tile::Input => {
-				if self.input_index < self.input.len()
-					&& self.board.get_or_blank(front_pos).is_blank()
-				{
-					let value = self.input[self.input_index] as MarbleValue;
-					*self.board.get_mut(front_pos) = Tile::Marble { value, dir };
-					self.marbles.push(front_pos);
-					self.input_index += 1;
+				PTile::Bag => {
+					if let Some(Tile::Blank) = self.board.get(front_pos) {
+						*self.board.get_mut(front_pos) = Tile::Marble { value: 0, dir };
+						self.marbles.push(front_pos);
+					}
 				}
-			}
-			Tile::Math(op) => {
-				let op = *op;
-				let pos_a = dir.left().step(pos);
-				let pos_b = dir.right().step(pos);
-				let val_a = self.board.get_or_blank(pos_a).read_value();
-				let val_b = self.board.get_or_blank(pos_b).read_value();
-				if (!self.board.get_or_blank(pos_a).is_blank()
-					|| !self.board.get_or_blank(pos_b).is_blank())
-					&& self.board.get_or_blank(front_pos).is_blank()
-				{
-					let result = match op {
-						MathOp::Add => val_a.wrapping_add(val_b),
-						MathOp::Sub => val_a.wrapping_sub(val_b),
-						MathOp::Mul => val_a.wrapping_mul(val_b),
-						MathOp::Div => val_a.checked_div(val_b).unwrap_or_default(),
-						MathOp::Rem => val_a.checked_rem(val_b).unwrap_or_default(),
+				PTile::Input => {
+					if self.input_index < self.input.len()
+						&& self.board.get_or_blank(front_pos).is_blank()
+					{
+						let value = self.input[self.input_index] as MarbleValue;
+						*self.board.get_mut(front_pos) = Tile::Marble { value, dir };
+						self.marbles.push(front_pos);
+						self.input_index += 1;
+					}
+				}
+				PTile::Math(op) => {
+					let op = *op;
+					let pos_a = dir.left().step(pos);
+					let pos_b = dir.right().step(pos);
+					let val_a = self.board.get_or_blank(pos_a).read_value();
+					let val_b = self.board.get_or_blank(pos_b).read_value();
+					if (!self.board.get_or_blank(pos_a).is_blank()
+						|| !self.board.get_or_blank(pos_b).is_blank())
+						&& self.board.get_or_blank(front_pos).is_blank()
+					{
+						let result = match op {
+							MathOp::Add => val_a.wrapping_add(val_b),
+							MathOp::Sub => val_a.wrapping_sub(val_b),
+							MathOp::Mul => val_a.wrapping_mul(val_b),
+							MathOp::Div => val_a.checked_div(val_b).unwrap_or_default(),
+							MathOp::Rem => val_a.checked_rem(val_b).unwrap_or_default(),
+						};
+						// println!("{op:?} a:{val_a} b:{val_b}");
+						*self.board.get_mut(front_pos) = Tile::Marble { value: result, dir };
+						self.marbles.push(front_pos);
+					}
+				}
+				PTile::Flipper => {
+					let m = self.board.get_mut(front_pos);
+					match m {
+						Tile::Powerable(PTile::Wire(wire_type), _) => {
+							*wire_type = match *wire_type {
+								WireType::Vertical => WireType::Horizontal,
+								WireType::Horizontal => WireType::Vertical,
+								WireType::Cross => WireType::Cross,
+							};
+						}
+						Tile::Mirror(mirror) => {
+							*mirror = match *mirror {
+								MirrorType::Forward => MirrorType::Back,
+								MirrorType::Back => MirrorType::Forward,
+							};
+						}
+						Tile::Arrow(dir) => {
+							*dir = dir.opposite();
+						}
+						_ => (),
 					};
-					// println!("{op:?} a:{val_a} b:{val_b}");
-					*self.board.get_mut(front_pos) = Tile::Marble { value: result, dir };
-					self.marbles.push(front_pos);
 				}
-			}
-			Tile::Flip => {
-				let m = self.board.get_mut(front_pos);
-				match m {
-					Tile::Wire(wire_type, _) => {
-						*wire_type = match *wire_type {
-							WireType::Vertical => WireType::Horizontal,
-							WireType::Horizontal => WireType::Vertical,
-							WireType::Cross => WireType::Cross,
-						};
-					}
-					Tile::Mirror(mirror) => {
-						*mirror = match *mirror {
-							MirrorType::Forward => MirrorType::Back,
-							MirrorType::Back => MirrorType::Forward,
-						};
-					}
-					Tile::Arrow(dir) => {
-						*dir = dir.opposite();
-					}
-					_ => (),
-				};
-			}
-			Tile::Gate(gate) => {
-				let gate = *gate;
-				let pos_a = dir.left().step(pos);
-				let pos_b = dir.right().step(pos);
-				let val_a = self.board.get_or_blank(pos_a).read_value();
-				let val_b = self.board.get_or_blank(pos_b).read_value();
+				PTile::Gate(gate) => {
+					let gate = *gate;
+					let pos_a = dir.left().step(pos);
+					let pos_b = dir.right().step(pos);
+					let val_a = self.board.get_or_blank(pos_a).read_value();
+					let val_b = self.board.get_or_blank(pos_b).read_value();
 
-				let result = match gate {
-					GateType::LessThan => val_a < val_b,
-					GateType::GreaterThan => val_a > val_b,
-					GateType::Equal => val_a == val_b,
-					GateType::NotEqual => val_a != val_b,
-				};
-				if result {
-					self.propagate_power(dir, dir.step(pos));
+					let result = match gate {
+						GateType::LessThan => val_a < val_b,
+						GateType::GreaterThan => val_a > val_b,
+						GateType::Equal => val_a == val_b,
+						GateType::NotEqual => val_a != val_b,
+					};
+					if result {
+						self.propagate_power(dir, dir.step(pos));
+					}
 				}
 			}
-			Tile::Marble { value: _, dir: _ }
-			| Tile::Trigger(_)
-			| Tile::Digit(_)
-			| Tile::Mirror(_)
-			| Tile::Arrow(_)
-			| Tile::Comment(_)
-			| Tile::Blank => (),
 		}
 	}
 }
@@ -322,30 +317,30 @@ pub fn parse(source: &str) -> Board {
 					dir: Direction::Down,
 				},
 				'*' => Tile::Trigger(false),
-				'-' => Tile::Wire(WireType::Horizontal, false),
-				'|' => Tile::Wire(WireType::Vertical, false),
-				'+' => Tile::Wire(WireType::Cross, false),
+				'-' => Tile::Powerable(PTile::Wire(WireType::Horizontal), false),
+				'|' => Tile::Powerable(PTile::Wire(WireType::Vertical), false),
+				'+' => Tile::Powerable(PTile::Wire(WireType::Cross), false),
 				'/' => Tile::Mirror(MirrorType::Forward),
 				'\\' => Tile::Mirror(MirrorType::Back),
 				'^' => Tile::Arrow(Direction::Up),
 				'v' => Tile::Arrow(Direction::Down),
 				'<' => Tile::Arrow(Direction::Left),
 				'>' => Tile::Arrow(Direction::Right),
-				'=' => Tile::Gate(GateType::Equal),
-				'!' => Tile::Gate(GateType::NotEqual),
-				'L' => Tile::Gate(GateType::LessThan),
-				'G' => Tile::Gate(GateType::GreaterThan),
-				'P' => Tile::Print,
-				'I' => Tile::Input,
-				'F' => Tile::Flip,
-				'A' => Tile::Math(MathOp::Add),
-				'S' => Tile::Math(MathOp::Sub),
-				'M' => Tile::Math(MathOp::Mul),
-				'D' => Tile::Math(MathOp::Div),
-				'R' => Tile::Math(MathOp::Rem),
-				'B' => Tile::Bag,
+				'=' => Tile::Powerable(PTile::Gate(GateType::Equal), false),
+				'!' => Tile::Powerable(PTile::Gate(GateType::NotEqual), false),
+				'L' => Tile::Powerable(PTile::Gate(GateType::LessThan), false),
+				'G' => Tile::Powerable(PTile::Gate(GateType::GreaterThan), false),
+				'P' => Tile::Powerable(PTile::Output, false),
+				'I' => Tile::Powerable(PTile::Input, false),
+				'F' => Tile::Powerable(PTile::Flipper, false),
+				'A' => Tile::Powerable(PTile::Math(MathOp::Add), false),
+				'S' => Tile::Powerable(PTile::Math(MathOp::Sub), false),
+				'M' => Tile::Powerable(PTile::Math(MathOp::Mul), false),
+				'D' => Tile::Powerable(PTile::Math(MathOp::Div), false),
+				'R' => Tile::Powerable(PTile::Math(MathOp::Rem), false),
+				'B' => Tile::Powerable(PTile::Bag, false),
 				d @ '0'..='9' => Tile::Digit(d as u8),
-				'#' => Tile::Comment(b'#'),
+				'#' => Tile::Block,
 				' ' => Tile::Blank,
 				'(' => {
 					in_comment = true;
diff --git a/src/marble_engine/tile.rs b/src/marble_engine/tile.rs
index 9928361..7f24a40 100644
--- a/src/marble_engine/tile.rs
+++ b/src/marble_engine/tile.rs
@@ -13,22 +13,28 @@ pub type MarbleValue = u32;
 pub enum Tile {
 	#[default]
 	Blank,
+	Block,
 	Comment(u8),
-	Bag,
 	Marble {
 		value: MarbleValue,
 		dir: Direction,
 	},
 	Trigger(bool),
 	Digit(u8),
-	Wire(WireType, bool),
-	Gate(GateType),
-	Print,
-	Input,
-	Flip,
-	Math(MathOp),
 	Mirror(MirrorType),
 	Arrow(Direction),
+	Powerable(PTile, bool),
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum PTile {
+	Wire(WireType),
+	Gate(GateType),
+	Math(MathOp),
+	Bag,
+	Flipper,
+	Input,
+	Output,
 }
 
 #[derive(Debug, Clone, Copy)]
@@ -89,16 +95,17 @@ impl Tile {
 		let right = x + size / 2 - 1;
 		match self {
 			Tile::Blank => (),
+			Tile::Block => d.draw_rectangle(x - size / 2, y - size / 2, size, size, Color::DIMGRAY),
 			Tile::Comment(c) => {
-				d.draw_text(&format!("{}", *c as char), x - 10, y - 10, 20, Color::RED)
+				d.draw_rectangle(x-size/2, y-size/2, size, size, Color::DIMGRAY);
+				d.draw_text(&format!("{}", *c as char), x - 10, y - 10, 20, Color::WHITE);
 			}
-			Tile::Bag => d.draw_circle_lines(x, y, size as f32 * 0.4, Color::CYAN),
 			Tile::Marble { value, dir } => {
 				d.draw_circle(x, y, size as f32 * 0.35, Color::new(15, 15, 15, 255));
 				d.draw_text(
 					&format!("{value}"),
-					x - size / 2,
-					y - size / 2,
+					x - size / 2 + 2,
+					y - size / 2 + 2,
 					20,
 					Color::MAGENTA,
 				);
@@ -110,24 +117,6 @@ impl Tile {
 			Tile::Digit(n) => {
 				d.draw_text(&String::from(*n as char), x - 10, y - 10, 20, Color::ORANGE)
 			}
-			Tile::Wire(wire, state) => {
-				let color = if *state { Color::RED } else { Color::WHITE };
-				let vertical = !matches!(wire, WireType::Horizontal);
-				let horizontal = !matches!(wire, WireType::Vertical);
-				if vertical {
-					// d.draw_line(x, up, x, down, color);
-					d.draw_rectangle(x - size / 8, y - size / 2, size / 4, size, color)
-				}
-				if horizontal {
-					// d.draw_line(left, y, right, y, color);
-					d.draw_rectangle(x - size / 2, y - size / 8, size, size / 4, color)
-				}
-			}
-			// Tile::Gate(_) => todo!(),
-			// Tile::Print => todo!(),
-			// Tile::Input => todo!(),
-			// Tile::Flip => todo!(),
-			// Tile::Math(_) => todo!(),
 			Tile::Mirror(mirror) => {
 				let height = size as f32 * 1.25;
 				let width = (size / 4) as f32;
@@ -156,7 +145,32 @@ impl Tile {
 				};
 				d.draw_triangle(v1, v2, v3, Color::CYAN);
 			}
-			_ => d.draw_rectangle(x - size / 2, y - size / 2, size, size, Color::YELLOW),
+			Tile::Powerable(tile, state) => {
+				let color = if *state { Color::RED } else { Color::LIGHTGRAY };
+				match tile {
+					PTile::Bag => {
+						d.draw_circle(x, y, size as f32 * 0.4, color);
+						d.draw_circle(x, y, size as f32 * 0.2, Color::GRAY);
+					}
+					PTile::Wire(wire) => {
+						let vertical = !matches!(wire, WireType::Horizontal);
+						let horizontal = !matches!(wire, WireType::Vertical);
+						if vertical {
+							d.draw_rectangle(x - size / 8, y - size / 2, size / 4, size, color)
+						}
+						if horizontal {
+							d.draw_rectangle(x - size / 2, y - size / 8, size, size / 4, color)
+						}
+					}
+					// PTile::Gate(_) => todo!(),
+					// PTile::Math(_) => todo!(),
+					// PTile::Print => todo!(),
+					// PTile::Input => todo!(),
+					// PTile::Flip => todo!(),
+					_ => d.draw_rectangle(x - size / 2, y - size / 2, size, size, color),
+				}
+			}
+
 		}
 	}
 }