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+ "Real" predictable random. Seed depends on usercode map.

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This commit is contained in:
Dominik Maier 2014-05-13 03:34:11 +02:00
parent 78a0efac78
commit 2807e83672
1 changed files with 7 additions and 2 deletions

9
app/lib/world/world.coffee
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@ -30,7 +30,8 @@ module.exports = class World
@systems = []
@systemMap = {}
@scriptNotes = []
@rand = new Rand 0
# We want a seed thats not always 0 yet reproducable.
@rand = new Rand @hashString(JSON.stringify @userCodeMap)
@frames = [new WorldFrame(@, 0)]
getFrame: (frameIndex) ->
@ -402,7 +403,7 @@ module.exports = class World
return
@finishDeserializing w, finishedWorldCallback, perf
@finishDeserializing: (w, finishedWorldCallback, perf) =>
@finishDeserializing: (w, finishedWorldCallback, perf) ->
perf.t4 = now()
w.ended = true
w.getFrame(w.totalFrames - 1).restoreState()
@ -485,3 +486,7 @@ module.exports = class World
teamForPlayer: (n) ->
playableTeams = @playableTeams ? ['humans']
playableTeams[n % playableTeams.length]
#djb2 algorithm
hashString: (str) ->
(str.charCodeAt i for i in [0...str]).reduce(((hash, char) -> ((hash << 5) + hash) + char), 5381) # hash * 33 + c