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class PSDLevels
constructor: (@layer, @length) ->
@file = @layer.file
@data =
records: []
parse: ->
start = @file.tell()
version = @file.readShortInt()
assert version is 1
@parseLevelRecords()
# PS CS (8.0) additional information
if @file.tell() - start < @length - 4
tag = @file.readf ">4s"
assert.equal tag, "Lvls"
version = @file.readShortInt()
assert.equal version, 3
# Figure out the total number of level record structures
# Subtract the legacy number of level record structures (29)
# to determine how many are remaining in the file for reading.
@data.levelCount = @file.readShortInt() - 29
assert levelCount >= 0
@parseLevelRecords(levelCount)
# Only return the important data. Don't need to hold on to this
# entire class.
return @data
parseLevelRecords: (count = 29) ->
# 29 sets of level records. each level has 5 short ints
for i in [0...count]
record = {}
[
record.inputFloor, # (0...253)
record.inputCeiling, # (2...255)
record.outputFloor, # (0...255)
record.outputCeiling, # (0...255)
record.gamma # (10...999)
] = @file.readf ">hhhhh"
record.gamma /= 100
# Sets 28 and 29 are reserved
if i < 27
assert record.inputFloor >= 0 and record.inputFloor <= 255
assert record.inputCeiling >= 2 and record.inputCeiling <= 255
assert record.outputFloor >= 0 and record.outputFloor <= 255
assert record.outputCeiling >= 0 and record.outputCeiling <= 255
assert record.gamma >= 0.1 and record.gamma <= 9.99
@data.records.push record
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