diff --git a/src/editor.rs b/src/editor.rs
index cf42bdb..c941a3f 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -884,15 +884,11 @@ impl Editor {
 		self.tooltip.add(368, 4, 48, 32, "Speed");
 		draw_usize(d, textures, 1 << self.sim_speed, (368, 4), SPEED_DIGITS, 1);
 		slider(
-			d,
-			&self.mouse,
+			(d, &self.mouse),
+			rect(368, 24, 48, 12),
 			&mut self.sim_speed,
 			0,
 			MAX_SPEED_POWER,
-			368,
-			24,
-			48,
-			12,
 		);
 
 		self.tooltip.add(420, 4, 180, 32, "Steps");
@@ -1028,8 +1024,7 @@ impl Editor {
 			|(row, col): (i32, i32), texture: &str, tooltip: &'static str, tool_option: Tool| {
 				let border = 4.;
 				let gap = 2.;
-				let tex_size = 32.;
-				let button_size = tex_size + border * 2.;
+				let button_size = 32. + border * 2.;
 				let grid_size = button_size + gap * 2.;
 				let pos = Vector2 {
 					x: 100. + col as f32 * grid_size - if col < 0 { 10. } else { 0. },
@@ -1040,13 +1035,11 @@ impl Editor {
 					tooltip,
 				);
 				scrollable_texture_option_button(
-					d,
-					&self.mouse,
+					(d, &self.mouse),
 					pos,
 					textures.get(texture),
 					tool_option,
 					&mut self.active_tool,
-					tex_size,
 					border,
 				)
 			};
diff --git a/src/ui.rs b/src/ui.rs
index 0fbd9c4..1a94a7f 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -299,13 +299,11 @@ pub fn text_input(
 }
 
 pub fn scrollable_texture_option_button<T>(
-	d: &mut RaylibDrawHandle,
-	mouse: &MouseInput,
+	(d, mouse): (&mut RaylibDrawHandle, &MouseInput),
 	pos: Vector2,
 	texture: &Texture2D,
 	option: T,
 	current: &mut T,
-	tex_size: f32,
 	border: f32,
 ) -> Option<Scroll>
 where
@@ -314,8 +312,8 @@ where
 	let bounds = Rectangle {
 		x: pos.x,
 		y: pos.y,
-		width: tex_size + border * 2.,
-		height: tex_size + border * 2.,
+		width: 32. + border * 2.,
+		height: 32. + border * 2.,
 	};
 	d.draw_rectangle_rec(
 		bounds,
@@ -329,7 +327,7 @@ where
 		texture,
 		pos + Vector2::new(border, border),
 		0.,
-		tex_size / texture.width as f32,
+		32. / texture.width as f32,
 		Color::WHITE,
 	);
 	if mouse.is_over(bounds) {
@@ -388,21 +386,20 @@ pub fn draw_usize_small(
 }
 
 pub fn slider(
-	d: &mut RaylibDrawHandle,
-	mouse: &MouseInput,
+	(d, mouse): (&mut RaylibDrawHandle, &MouseInput),
+	bounds: Rectangle,
 	value: &mut u8,
 	min: u8,
 	max: u8,
-	x: i32,
-	y: i32,
-	width: i32,
-	height: i32,
 ) -> bool {
+	// draw state
 	// the +1 makes the lowest state look slightly filled and the max state fully filled
 	let percent = (*value - min + 1) as f32 / (max - min + 1) as f32;
-	d.draw_rectangle(x, y, width, height, BG_WIDGET);
-	d.draw_rectangle(x, y, (width as f32 * percent) as i32, height, Color::CYAN);
-	let bounds = Rectangle::new(x as f32, y as f32, width as f32, height as f32);
+	d.draw_rectangle_rec(bounds, BG_WIDGET);
+	let mut filled_bounds = bounds;
+	filled_bounds.width *= percent;
+	d.draw_rectangle_rec(filled_bounds, Color::CYAN);
+	// interaction
 	if mouse.is_over(bounds) {
 		if mouse.left_hold() {
 			let percent = (mouse.pos().x - bounds.x) / bounds.width;