mirror of
https://github.com/codeninjasllc/codecombat.git
synced 2024-11-24 08:08:15 -05:00
54 lines
2 KiB
CoffeeScript
54 lines
2 KiB
CoffeeScript
# The System will operate on its Thangs of interest in each WorldFrame.
|
|
# Systems so far: AI, UI, Collision, Movement, Targeting, Programming, Combat, Vision, Hearing, Inventory, Actions
|
|
# Other Systems might be things like Attraction, EdgeBounce, EdgeWrap, and non-physics ones, too, like Rendering, Animation, ...
|
|
|
|
module.exports = class System
|
|
@className: "System"
|
|
constructor: (@world, config) ->
|
|
# Unlike with Component, we don't automatically copy all our properties onto the World.
|
|
# Subclasses can copy select properties here if they like.
|
|
for key, value of (config ? {})
|
|
@[key] = value
|
|
@registries = []
|
|
@hashes = {}
|
|
|
|
# Start is called once the beginning, after all Thangs have been loaded.
|
|
start: (thangs) ->
|
|
|
|
# Update is called once per frame on all thangs that currently have exist=true in the World.
|
|
# We return a simple numeric hash that will combine to a frame hash help us determine whether this frame has changed later on.
|
|
update: (thangs) ->
|
|
hash = 0
|
|
|
|
# Finish is called once at the end, after all frames have been generated.
|
|
finish: (thangs) ->
|
|
|
|
addRegistry: (condition) ->
|
|
registry = []
|
|
@registries.push [registry, condition]
|
|
registry
|
|
|
|
# Register is called whenever a Thang changes important state (exists, dead, etc), and can be called more specifically by individual Thangs.
|
|
register: (thang) ->
|
|
for [registry, condition] in @registries
|
|
if condition thang
|
|
if thang not in registry
|
|
registry.push thang
|
|
else
|
|
thangIndex = registry.indexOf thang
|
|
if thangIndex isnt -1
|
|
registry.splice thangIndex, 1
|
|
null
|
|
|
|
# Override this to determine which registries have which conditions
|
|
checkRegistration: (thang, registry) ->
|
|
|
|
hashString: (s) ->
|
|
return @hashes[s] if s of @hashes
|
|
hash = 0
|
|
hash = hash * 31 + s.charCodeAt(i) for i in [0 ... Math.min(s.length, 100)]
|
|
hash = @hashes[s] = hash % 3.141592653589793
|
|
hash
|
|
|
|
toString: ->
|
|
"<System: #{@constructor.className}"
|