programs/decimal_printer.mbl

@@ -1,25 +0,0 @@
-(decimal printer)
- o
- 1
- 2
- 3
- 4
- 5
- 6
-           o
-  (check if 0)
-v B-=-#01  <
- v   * D-(div/10)
-v     B * <
-     o
-v> * 1    ^
- F -R0* B(next digit, %10)
-*| # <-A vo(+48 = ascii)
- |    #84 <
- |       *-|
- F         +B * B
-#<       \F----
-
-         *-|
-          P-
-         B

src/main.rs

@@ -1,8 +1,4 @@
-use std::{
-	env, fs,
-	io::{stdin, stdout, Write},
-	process::exit,
-};
+use std::{env, fs, io::{stdin, stdout, Write}, process::exit};
 
 use owo_colors::OwoColorize;
 
@@ -104,6 +100,7 @@ fn main() {
 		.unwrap_or_default();
 
 	let mut interpreter = Machine::new(&source, input_data);
+	print!("\x1B[2J"); // clear screen
 	interpreter.show();
 
 	loop {
@@ -123,7 +120,7 @@ fn main() {
 			continue;
 		}
 
-		const HELP_TEXT: &str = r#"\n | step
+		const HELP_TEXT:&str = r#"\n | step
   - step once
 step [n]
   - step n times
@@ -142,12 +139,7 @@ q | quit | exit
 			["dbg" | "debug"] => {
 				dbg!(&interpreter);
 			}
-			["step", num] => {
-				if let Ok(n) = num.parse() {
-					interpreter.step(n);
-					interpreter.show();
-				}
-			}
+			["step", num] => _ = num.parse().map(|n| interpreter.step(n)),
 			["q" | "exit" | "quit"] => break,
 			["h" | "help" | "?"] => {
 				println!("{}", HELP_TEXT.green());
@@ -178,8 +170,9 @@ impl Machine {
 	}
 
 	fn show(&self) {
+		// dbg!(&self);
 		print!("\x1B[2J"); // clear screen
-		print!("\x1B[1;1H"); // reset cursor
+		print!("\x1B[u"); // reset cursor
 		for y in 0..self.grid.height() {
 			let mut marbles_on_row = Vec::new();
 			for x in 0..self.grid.width() {
@@ -250,7 +243,7 @@ impl Machine {
 		println!("steps: {}", self.steps);
 	}
 
-	fn print_input(&self) {
+	fn print_input(&self){
 		if !self.input.is_empty() {
 			println!("input: '{}'", String::from_utf8_lossy(&self.input));
 		}
@@ -430,7 +423,7 @@ impl Machine {
 						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}");
+					println!("{op:?} a:{val_a} b:{val_b}");
 					*self.grid.get_mut(front_pos) = Tile::Marble { value: result, dir };
 					self.marbles.push(front_pos);
 				}