Pen
Adjusts the pen tool. If the pen is down, the agent stamps the terrain at each position as it moves along the terrain. If the pen is up, the agent does not stamp the terrain.
pen [▼] is a code block part of the Environment drawer.
Usage
pen [▼](s) adjusts the pen tool. If the pen is down, the agent stamps the terrain at each position as it moves. If the pen is up, the agent does not stamp the terrain.
Syntax
Inputs:
- either “up” or “down” from the dropdown menu
Example
This is an example of the flower turtles activity. Using the pen down block it is possible to track the movement of the turtles such that a flower appears on the terrain. Note that the size of the trail a turtle leaves using pen down is proportional to the size of the turtle.
Nuances
An important difference between pen [▼] and stamp [_] is that pen [▼] allows for continuous marking of the terrain that always follows the agent's movement.