Online Gaming - MongoDB Applied Design Patterns - page 166

def def describe_item ( item ):

'''Add a 'description' field to the given item'''

result = dict ( item )
iif item [ 'bonus' ]:
description = ' %+d %s ' % ( item [ 'bonus' ], item [ 'name' ])

else else :

description = item [ 'name' ]
result [ 'description' ] = description
return

return result

def def get_armor_for_display ( character , item_index ):

'''Given a character document, return an 'armor' value
suitable for display'''

result = dict ( head = [], hands = [], feet = [], body = [])
for

for piece iin character [ 'armor' ]:
item = describe_item ( item_index [ piece [ 'id' ]])
result [ piece [ 'region' ]] . append ( item )
return return result

In order to actually display the armor, then, we'd use the following code:

>>> >>> item_index = get_item_index (

...

... character [ 'inventory' ] + character [ 'location' ][ 'inventory' ])

>>> >>> armor = get_armor_for_dislay ( character , item_index )

Note in particular that we're building an index not only for the items the character is actually
carrying in inventory, but also for the items that the player might interact with in the room.

Similarly, in order to display the weapon information, we need to build a structure such as the
following:

{

"left" : None ,
"right" : None ,
"both" : { "description" : "+2 quarterstaff" }

}

The helper function is similar to that for get_armor_for_display :