adds keyboard input

race_track.gd

@@ -29,9 +29,42 @@ func _input(event):
 			_handle_keyboard_input(event)
 
 
+func step_next():
+	""" Step this module state to the next cell """
+	current_cell = next_cell
+	var current_idx = track.find(current_cell)
+	var next_idx = current_idx + 1 if current_idx < track.size() - 1 else 0
+	next_cell = track[next_idx]
+	emit_signal("player_moved", laps + get_track_offset(current_cell))
+	emit_signal("wrong_way", Vector2(-1, -1)) # Cancel any wrong way sign
+
 func _handle_keyboard_input(event):
 	if event is InputEventKey:
-		print_debug("Input Ignored: KEYBOARD MODE")
+		var direction_to_next = current_cell.direction_to(next_cell)
+		if event.is_action_pressed("ui_up"):
+			print_debug("Up key")
+			if direction_to_next == Vector2(0, -1):
+				step_next()
+			else:
+				emit_signal("wrong_way", map.map_to_world(Vector2(current_cell.x, current_cell.y - 1)))
+		elif event.is_action_pressed("ui_right"):
+			print_debug("Right key")
+			if direction_to_next == Vector2(1, 0):
+				step_next()
+			else:
+				emit_signal("wrong_way", map.map_to_world(Vector2(current_cell.x + 1, current_cell.y)))
+		elif event.is_action_pressed("ui_left"):
+			print_debug("Left key")
+			if direction_to_next == Vector2(-1, 0):
+				step_next()
+			else:
+				emit_signal("wrong_way", map.map_to_world(Vector2(current_cell.x - 1, current_cell.y)))
+		elif event.is_action_pressed("ui_down"):
+			print_debug("Key down")
+			if direction_to_next == Vector2(0, 1):
+				step_next()
+			else:
+				emit_signal("wrong_way", map.map_to_world(Vector2(current_cell.x, current_cell.y + 1)))
 
 
 func _handle_mouse_input(event):
@@ -50,11 +83,7 @@ func _handle_mouse_input(event):
 						laps += 1
 					# We use the loop property of PathFollow2D to embed
 					# laps count inside the offset.
-					emit_signal("player_moved", laps + get_track_offset(hover_cell))
-					emit_signal("wrong_way", Vector2(-1, -1))
-					current_cell = next_cell
-					var next_idx = cell_idx + 1 if cell_idx < track.size() - 1 else 0
-					next_cell = track[next_idx]
+					step_next()
 				else:
 					emit_signal("wrong_way", map.map_to_world(hover_cell))