The locked door ludeme keeps a player from walking though a door thsat has not yet been unlocked by requiring the player to have a key and be standing in front of the door to unlock it.

• The player must be standing in the correct location
• The player must have a key

When the player has those two requirements fulfilled, they can open the door, which:

• Consumes the key and places it back into the 'key' state for later use
• Creates a token inside the 'door' state, signifying that it is now unlocked.

#gamedesign #ludeme #petrinet #toolong