56 lines
2.3 KiB
CoffeeScript
56 lines
2.3 KiB
CoffeeScript
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@roundHalfDown = (number) ->
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Math.ceil(number - .5)
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@typeEffectiveness = (userType, againstTypes, options = {}) ->
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userType = Type[userType]
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effectiveness = 1
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for subtype in againstTypes
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targetType = Type[subtype]
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multiplier = typeChart[userType][targetType]
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multiplier = 1 if multiplier == 0 && options.ignoreImmunities
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multiplier = 2 if options.superEffectiveAgainst == subtype
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effectiveness *= multiplier
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effectiveness
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@Type = Type =
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Normal : 0
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Fire : 1
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Water : 2
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Electric : 3
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Grass : 4
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Ice : 5
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Fighting : 6
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Poison : 7
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Ground : 8
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Flying : 9
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Psychic : 10
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Bug : 11
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Rock : 12
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Ghost : 13
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Dragon : 14
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Dark : 15
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Steel : 16
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"???" : 17
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typeChart = [
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# Nor Fir Wat Ele Gra Ice Fig Poi Gro Fly Psy Bug Roc Gho Dra Dar Ste ???
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[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, .5, 0, 1, 1, .5, 1 ], # Nor
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[ 1, .5, .5, 1, 2, 2, 1, 1, 1, 1, 1, 2, .5, 1, .5, 1, 2, 1 ], # Fir
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[ 1, 2, .5, 1, .5, 1, 1, 1, 2, 1, 1, 1, 2, 1, .5, 1, 1, 1 ], # Wat
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[ 1, 1, 2, .5, .5, 1, 1, 1, 0, 2, 1, 1, 1, 1, .5, 1, 1, 1 ], # Ele
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[ 1, .5, 2, 1, .5, 1, 1, .5, 2, .5, 1, .5, 2, 1, .5, 1, .5, 1 ], # Gra
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[ 1, .5, .5, 1, 2, .5, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, .5, 1 ], # Ice
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[ 2, 1, 1, 1, 1, 2, 1, .5, 1, .5, .5, .5, 2, 0, 1, 2, 2, 1 ], # Fig
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[ 1, 1, 1, 1, 2, 1, 1, .5, .5, 1, 1, 1, .5, .5, 1, 1, 0, 1 ], # Poi
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[ 1, 2, 1, 2, .5, 1, 1, 2, 1, 0, 1, .5, 2, 1, 1, 1, 2, 1 ], # Gro
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[ 1, 1, 1, .5, 2, 1, 2, 1, 1, 1, 1, 2, .5, 1, 1, 1, .5, 1 ], # Fly
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[ 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, .5, 1, 1, 1, 1, 0, .5, 1 ], # Psy
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[ 1, .5, 1, 1, 2, 1, .5, .5, 1, .5, 2, 1, 1, .5, 1, 2, .5, 1 ], # Bug
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[ 1, 2, 1, 1, 1, 2, .5, 1, .5, 2, 1, 2, 1, 1, 1, 1, .5, 1 ], # Roc
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[ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, .5, .5, 1 ], # Gho
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[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, .5, 1 ], # Dra
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[ 1, 1, 1, 1, 1, 1, .5, 1, 1, 1, 2, 1, 1, 2, 1, .5, .5, 1 ], # Dar
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[ 1, .5, .5, .5, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, .5, 1 ], # Ste
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[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 ] # ???
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]
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