much better input handling, mvp arr

main.gd

@@ -45,7 +45,8 @@ func _process(delta: float) -> void:
 	$UndoButton.disabled = not hist.has_undo()
 	$RedoButton.disabled = not hist.has_redo()
 	$RestartButton.disabled = not hist.has_undo()
-	$Clock.text = "T = %d\n%d FPS" % [time, Engine.get_frames_per_second()]
+	$Clock.text = "T = %d\n%d FPS\n%f hold time\n%f arrf" % \
+		[time, Engine.get_frames_per_second(), move_hold_time, arrf(move_hold_time)]
 	var slowmo := Input.is_action_pressed("slowmo");
 	$SlowmoIndicator.text = "slowmo" if slowmo else ""
 	Engine.time_scale = slowmo_speed if slowmo else 1.0
@@ -53,17 +54,38 @@ func _process(delta: float) -> void:
 	AudioServer.playback_speed_scale = slowmo_speed if slowmo else 1.0
 	if not $TopLeft.is_on_screen() or not $BottomRight.is_on_screen():
 		camera.position.y += 10*delta
+	
+	handle_move(delta)
 
-func _input(event: InputEvent) -> void:
-	if event.is_action_pressed("u", false, true):
-		step(Vector2i.UP)
-	elif event.is_action_pressed("d", false, true):
-		step(Vector2i.DOWN)
-	elif event.is_action_pressed("l", false, true):
-		step(Vector2i.LEFT)
-	elif event.is_action_pressed("r", false, true):
-		step(Vector2i.RIGHT)
-	elif event.is_action_pressed("undo", false, true):
+var move_last := Vector2i.ZERO
+var move_hold_time := 0.0
+var move_last_integer := -1
+
+func arrf(x: float) -> float:
+	return 5*x**(4.0/3)
+	#return 20*x*log(x+1)/log(10)
+
+func handle_move(delta: float):
+	var dir := Vector2i(Input.get_vector(&"l", &"r", &"u", &"d").snapped(Vector2.ONE))
+	
+	if dir == Vector2i.ZERO or (abs(dir.x) > 0 and abs(dir.y) > 0):
+		move_last = Vector2i.ZERO
+		move_hold_time = 0
+		move_last_integer = -1
+		return
+	
+	var fx := floori(arrf(move_hold_time))
+	if fmod(arrf(move_hold_time), 1) < 0.1 and fx != move_last_integer:
+		var steps := maxi(1, fx - move_last_integer)
+		for i in range(steps):
+			step(dir)
+		move_last_integer = fx
+		
+	move_last = dir
+	move_hold_time += delta
+
+func _unhandled_input(event: InputEvent) -> void:
+	if event.is_action_pressed("undo", false, true):
 		undo()
 	elif event.is_action_pressed("redo", false, true):
 		redo()

piece.gd

@@ -121,7 +121,7 @@ func do_bump(move: Vector2i, old_lvel := lvel) -> Callable:
 		tweens.push_back(tween)
 
 # TODO?: maybe fix? maybe the bump should be more complicated?
-func undo_bump(move: Vector2i) -> Callable:
+func undo_bump(_move: Vector2i) -> Callable:
 	return func(): pass
 
 func _ready() -> void: