diff --git a/src/blueprint.rs b/src/blueprint.rs
index 5cdb6e2..5cc6d4b 100644
--- a/src/blueprint.rs
+++ b/src/blueprint.rs
@@ -22,7 +22,7 @@ impl Blueprint {
 		Self {
 			id,
 			name: format!("Blueprint {id}"),
-			board: content.serialize(),
+			board: content.to_string(),
 			tile_board: Some(content.clone()),
 		}
 	}
diff --git a/src/editor.rs b/src/editor.rs
index cf42bdb..77ea49e 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -28,7 +28,7 @@ const MAX_ZOOM: f32 = 8.;
 const MIN_ZOOM: f32 = 0.25;
 const BOARD_MARGIN: PosInt = 3;
 const MAX_SPEED_POWER: u8 = 16;
-const SPEED_DIGITS: i32 = 5;
+const SPEED_DIGITS: u8 = 5;
 const MAX_FRAME_TIME_MICROS: u128 = 1_000_000 / 30;
 
 #[derive(Debug)]
@@ -320,7 +320,7 @@ impl Editor {
 						self.exit_state = ExitState::Save;
 						self.sim_state = SimState::Stepping;
 						self.score = Some(Score {
-							cycles: self.total_steps + self.machine.step_count(),
+							cycles: self.machine.step_count(),
 							tiles: self.source_board.count_tiles(),
 						});
 					}
@@ -688,8 +688,12 @@ impl Editor {
 			}
 			self.tooltip.add(42 + 205, y, 32, 32, "Select");
 			simple_option_button(
-				(d, &self.mouse),
-				rect(42 + 205, y, 32, 32),
+				d,
+				&self.mouse,
+				42 + 205,
+				y,
+				32,
+				32,
 				i,
 				&mut self.selected_blueprint,
 			);
@@ -714,18 +718,19 @@ impl Editor {
 			d.draw_text("Level Complete!", x + 45, y + 10, 30, Color::LIME);
 			if let Some(score) = &self.score {
 				d.draw_text("cycles", x + 15, y + 45, 20, Color::WHITE);
-				draw_usize(d, textures, score.cycles, (x + 10, y + 70), 9, 2);
+				draw_usize(d, textures, score.cycles, x + 10, y + 70, 9, 2);
 				d.draw_text("tiles", x + 215, y + 45, 20, Color::WHITE);
-				draw_usize(d, textures, score.tiles, (x + 210, y + 70), 5, 2);
+				draw_usize(d, textures, score.tiles, x + 210, y + 70, 5, 2);
 			}
-			if simple_button((d, &self.mouse), x + 10, y + 110, 140, 45) {
+			if simple_button(d, &self.mouse, x + 10, y + 110, 140, 45) {
 				self.popup = Popup::None;
 				self.dismissed_end = true;
 			}
 			d.draw_text("continue\nediting", x + 15, y + 115, 20, Color::WHITE);
 
 			if simple_button(
-				(d, &self.mouse),
+				d,
+				&self.mouse,
 				x + END_POPUP_WIDTH / 2 + 5,
 				y + 110,
 				140,
@@ -743,7 +748,7 @@ impl Editor {
 		} else {
 			d.draw_text("Level Failed!", x + 45, y + 10, 30, Color::RED);
 			d.draw_text("incorrect output", x + 45, y + 45, 20, Color::WHITE);
-			if simple_button((d, &self.mouse), x + 10, y + 110, 300, 25) {
+			if simple_button(d, &self.mouse, x + 10, y + 110, 300, 25) {
 				self.popup = Popup::None;
 				self.dismissed_end = true;
 			}
@@ -882,7 +887,7 @@ impl Editor {
 		}
 
 		self.tooltip.add(368, 4, 48, 32, "Speed");
-		draw_usize(d, textures, 1 << self.sim_speed, (368, 4), SPEED_DIGITS, 1);
+		draw_usize(d, textures, 1 << self.sim_speed, 368, 4, SPEED_DIGITS, 1);
 		slider(
 			d,
 			&self.mouse,
@@ -896,18 +901,18 @@ impl Editor {
 		);
 
 		self.tooltip.add(420, 4, 180, 32, "Steps");
-		draw_usize(d, textures, self.machine.step_count(), (420, 4), 9, 2);
+		draw_usize(d, textures, self.machine.step_count(), 420, 4, 9, 2);
 		if self.stage > Some(0) {
 			self.tooltip.add(420, 44, 180, 32, "Total steps");
 			let total_steps = self.total_steps + self.machine.step_count();
-			draw_usize(d, textures, total_steps, (420, 44), 9, 2);
+			draw_usize(d, textures, total_steps, 420, 44, 9, 2);
 		}
 
-		draw_usize(d, textures, self.step_time as usize, (260, 42), 9, 1);
-		draw_usize(d, textures, self.max_step_time as usize, (260, 60), 9, 1);
+		draw_usize(d, textures, self.step_time as usize, 260, 42, 9, 1);
+		draw_usize(d, textures, self.max_step_time as usize, 260, 60, 9, 1);
 
 		d.draw_text("input:", 603, 8, 10, Color::WHITE);
-		if simple_button((d, &self.mouse), 600, 20, 35, 15) {
+		if simple_button(d, &self.mouse, 600, 20, 35, 15) {
 			self.input_as_text = !self.input_as_text
 		}
 		let input_mode_text = if self.input_as_text { "text" } else { "bytes" };
@@ -990,7 +995,7 @@ impl Editor {
 			let y = footer_top as i32 + 49;
 
 			self.tooltip.add(100, y, 40, 40, "Cancel");
-			if simple_button((d, &self.mouse), 100, y, 40, 40)
+			if simple_button(d, &self.mouse, 100, y, 40, 40)
 				|| d.is_key_pressed(KeyboardKey::KEY_ESCAPE)
 			{
 				self.active_tool = Tool::SelectArea(Selection::default());
@@ -998,13 +1003,13 @@ impl Editor {
 			draw_scaled_texture(d, textures.get("cancel"), 104, y + 4, 2.);
 
 			self.tooltip.add(144, y, 40, 40, "Save blueprint");
-			if simple_button((d, &self.mouse), 144, y, 40, 40) {
+			if simple_button(d, &self.mouse, 144, y, 40, 40) {
 				self.save_blueprint(selection);
 			}
 			draw_scaled_texture(d, textures.get("save"), 148, y + 4, 2.);
 
 			self.tooltip.add(188, y, 40, 40, "Copy");
-			if simple_button((d, &self.mouse), 188, y, 40, 40)
+			if simple_button(d, &self.mouse, 188, y, 40, 40)
 				|| (d.is_key_pressed(KeyboardKey::KEY_C)
 					&& d.is_key_down(KeyboardKey::KEY_LEFT_CONTROL))
 			{
@@ -1014,7 +1019,7 @@ impl Editor {
 			draw_scaled_texture(d, textures.get("copy"), 192, y + 4, 2.);
 
 			self.tooltip.add(232, y, 40, 40, "Delete");
-			if simple_button((d, &self.mouse), 232, y, 40, 40) {
+			if simple_button(d, &self.mouse, 232, y, 40, 40) {
 				let min = selection.0.min(selection.1);
 				let max = selection.0.max(selection.1);
 				let board =
@@ -1169,7 +1174,7 @@ impl Editor {
 		let output_cell_width = 43;
 		let output_cells = (d.get_screen_width() - output_x) as usize / output_cell_width as usize;
 
-		if simple_button((d, &self.mouse), output_x, y + 70, 65, 15) {
+		if simple_button(d, &self.mouse, output_x, y + 70, 65, 15) {
 			self.output_as_text = !self.output_as_text
 		}
 		let output_mode_text = if self.output_as_text {
diff --git a/src/main.rs b/src/main.rs
index f592705..77ff9f8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -92,7 +92,7 @@ impl Game {
 					ExitState::ExitAndSave => {
 						let solution = &mut self.solutions.get_mut(editor.level_id()).unwrap()
 							[self.selected_solution];
-						solution.board = editor.source_board().serialize();
+						solution.board = editor.source_board().to_string();
 						solution.score = editor.score();
 						solution.save();
 						self.open_editor = None;
@@ -100,7 +100,7 @@ impl Game {
 					ExitState::Save => {
 						let solution = &mut self.solutions.get_mut(editor.level_id()).unwrap()
 							[self.selected_solution];
-						solution.board = editor.source_board().serialize();
+						solution.board = editor.source_board().to_string();
 						solution.score = editor.score();
 						solution.save();
 					}
@@ -212,13 +212,12 @@ impl Game {
 				let mut solution_y = y;
 				for (solution_index, solution) in solutions.iter().enumerate() {
 					if simple_option_button(
-						(d, &mouse),
-						rect(
-							level_list_width + 10,
-							solution_y,
-							entry_width,
-							solution_entry_height,
-						),
+						d,
+						&mouse,
+						level_list_width + 10,
+						solution_y,
+						entry_width,
+						solution_entry_height,
 						solution_index,
 						&mut self.selected_solution,
 					) {
diff --git a/src/marble_engine/board.rs b/src/marble_engine/board.rs
index 6aa6c7b..10b56fe 100644
--- a/src/marble_engine/board.rs
+++ b/src/marble_engine/board.rs
@@ -48,7 +48,7 @@ impl Board {
 		}
 	}
 
-	pub fn serialize(&self) -> String {
+	pub fn to_string(&self) -> String {
 		let mut out = String::new();
 		for y in 0..self.height {
 			for x in 0..self.width {
diff --git a/src/ui.rs b/src/ui.rs
index 0fbd9c4..24ab370 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -158,7 +158,8 @@ impl Tooltip {
 }
 
 pub fn simple_button(
-	(d, mouse): (&mut RaylibDrawHandle, &MouseInput),
+	d: &mut RaylibDrawHandle,
+	mouse: &MouseInput,
 	x: i32,
 	y: i32,
 	width: i32,
@@ -188,7 +189,7 @@ pub fn text_button(
 	let font_size = 20;
 	let margin = font_size / 4;
 	let height = font_size + margin * 2;
-	let clicked = simple_button((d, mouse), x, y, width, height);
+	let clicked = simple_button(d, mouse, x, y, width, height);
 	d.draw_text(text, x + margin, y + margin, font_size, Color::WHITE);
 	clicked
 }
@@ -200,21 +201,26 @@ pub fn tex32_button(
 	(tooltip, text): (&mut Tooltip, &'static str),
 ) -> bool {
 	let size = 32;
-	let clicked = simple_button((d, mouse), x, y, 32, 32);
+	let clicked = simple_button(d, mouse, x, y, 32, 32);
 	draw_scaled_texture(d, texture, x, y, 2.);
 	tooltip.add(x, y, size, size, text);
 	clicked
 }
 
 pub fn simple_option_button<T>(
-	(d, mouse): (&mut RaylibDrawHandle, &MouseInput),
-	bounds: Rectangle,
+	d: &mut RaylibDrawHandle,
+	mouse: &MouseInput,
+	x: i32,
+	y: i32,
+	width: i32,
+	height: i32,
 	option: T,
 	current: &mut T,
 ) -> bool
 where
 	T: PartialEq,
 {
+	let bounds = Rectangle::new(x as f32, y as f32, width as f32, height as f32);
 	d.draw_rectangle_rec(bounds, widget_bg(&option == current));
 	let mut changed = false;
 	if mouse.left_click() && mouse.is_over(bounds) && current != &option {
@@ -344,20 +350,24 @@ where
 pub fn draw_usize(
 	d: &mut RaylibDrawHandle,
 	textures: &Textures,
-	mut number: usize,
-	(x, y): (i32, i32),
-	digits: i32,
-	scale: i32,
+	number: usize,
+	x: i32,
+	y: i32,
+	digits: u8,
+	scale: u8,
 ) {
+	let digits = digits as i32;
+	let scale = scale as i32;
 	for i in 0..digits {
 		d.draw_rectangle(x + 10 * i * scale, y, 8 * scale, 16 * scale, BG_LIGHT);
 	}
+	let mut num = number;
 	let mut i = 0;
-	while (number != 0 || i == 0) && i < digits {
-		let texture = textures.get(&format!("digit_{}", number % 10));
+	while (num != 0 || i == 0) && i < digits {
+		let texture = textures.get(&format!("digit_{}", num % 10));
 		let x = x + (digits - i - 1) * 10 * scale;
 		draw_scaled_texture(d, texture, x, y, scale as f32);
-		number /= 10;
+		num /= 10;
 		i += 1;
 	}
 }
diff --git a/src/util.rs b/src/util.rs
index b0a00fa..e5b6d87 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -145,7 +145,3 @@ pub fn get_scroll(rl: &RaylibHandle) -> Option<Scroll> {
 		None
 	}
 }
-
-pub fn rect(x: i32, y: i32, width: i32, height: i32) -> Rectangle {
-	Rectangle::new(x as f32, y as f32, width as f32, height as f32)
-}