make trajectory draw line on landing point

scripts/trajectory.gd

@@ -262,6 +262,11 @@ func _draw() -> void:
 				if is_hitting_floor:
 					is_on_floor = true
 					_draw_collision_hit(pos, SIDE_BOTTOM, _floor_hit_color)
+					draw_dashed_line(
+						pos + Vector2.LEFT * _player_size.x / 2,
+						pos + Vector2.RIGHT * _player_size.x / 2,
+						_floor_hit_color
+					)
 				if is_hitting_ceiling:
 					velocity.y = 0
 					draw_rect(