Ability Cooldown: Difference between revisions

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'''Example:'''

With '''12%''' ~~Cooldown Reduction~~ from {{ItemIcon|~~Diviner's Kevlar~~}} and '''16%''' from {{ItemIcon|~~Superior Cooldown~~}}:

With '''{{DataProp|{{#vardefineecho: Item1|Superior Cooldown}}|CooldownReduction}}%''' from {{ItemIcon|{{#var: Item1}}}} and '''{{DataProp|{{#vardefineecho: Item2|Spellslinger}}|CooldownReduction}}%''' from {{ItemIcon|{{#var: Item2}}}}:

# Convert percentages to decimals: ~~0.12~~ and ~~0.16~~.

# Convert percentages to decimals: {{DataProp|{{#var: Item1}}|CooldownReduction}}% to {{#vardefineecho: Item1Duration|{{#expr: {{DataProp|{{#var: Item1}}|CooldownReduction}} / 100}}}} and {{DataProp|{{#var: Item2}}|CooldownReduction}}% to {{#vardefineecho: Item2Duration|{{#expr: {{DataProp|{{#var: Item2}}|CooldownReduction}} / 100}}}}.

# Subtract from 1: (1 - ~~0.12~~) = '''~~0.88~~''' and (1 - ~~0.16~~) = '''~~0.84~~'''.

# Subtract from 1: (1 - {{#var: Item1Duration}}) = '''{{#expr: 1 - {{#var: Item1Duration}}}}''' and (1 - {{#var: Item2Duration}}) = '''{{#expr: 1 - {{#var: Item2Duration}}}}'''.

# Multiply the remainders: ~~0.88~~ × ~~0.84~~ = '''~~0.7392~~'''.

# Multiply the remainders: {{#expr: 1 - {{#var: Item1Duration}}}} × {{#expr: 1 - {{#var: Item2Duration}}}} = '''{{#vardefineecho: CombinedItemDuration|{{#expr: (1 - {{#var: Item1Duration}}) * (1 - {{#var: Item2Duration}}) round 4}}}}'''.

# Subtract from 1: 1 - ~~0.7392~~ = '''~~0.2608~~'''.

# Subtract from 1: 1 - {{#var: CombinedItemDuration}} = '''{{#expr: 1 - {{#var: CombinedItemDuration}} round 4}}'''.

# Total Cooldown Reduction is ~~approximately~~ '''26%''', not 28%.

# Total Cooldown Reduction is '''{{#expr: (1 - {{#var: CombinedItemDuration}}) * 100 round 1}}%''', not {{#expr: ({{#var: Item1Duration}} + {{#var: Item2Duration}}) * 100 round 1}}%.

== Sources of Ability Cooldown Reduction ==

Ability Cooldown: Difference between revisionsGive feedback

~2026-LaneFireUrn1085 (talk)

@@ Line 19: / Line 19: @@
 '''Example:'''
-With '''12%''' Cooldown Reduction from {{ItemIcon|Diviner's Kevlar}} and '''16%''' from {{ItemIcon|Superior Cooldown}}:
+With '''{{DataProp|{{#vardefineecho: Item1|Superior Cooldown}}|CooldownReduction}}%''' from {{ItemIcon|{{#var: Item1}}}} and '''{{DataProp|{{#vardefineecho: Item2|Spellslinger}}|CooldownReduction}}%''' from {{ItemIcon|{{#var: Item2}}}}:
-# Convert percentages to decimals: 0.12 and 0.16.
+# Convert percentages to decimals: {{DataProp|{{#var: Item1}}|CooldownReduction}}% to {{#vardefineecho: Item1Duration|{{#expr: {{DataProp|{{#var: Item1}}|CooldownReduction}} / 100}}}} and {{DataProp|{{#var: Item2}}|CooldownReduction}}% to {{#vardefineecho: Item2Duration|{{#expr: {{DataProp|{{#var: Item2}}|CooldownReduction}} / 100}}}}.
-# Subtract from 1: (1 - 0.12) = '''0.88''' and (1 - 0.16) = '''0.84'''.
+# Subtract from 1: (1 - {{#var: Item1Duration}}) = '''{{#expr: 1 - {{#var: Item1Duration}}}}''' and (1 - {{#var: Item2Duration}}) = '''{{#expr: 1 - {{#var: Item2Duration}}}}'''.
-# Multiply the remainders: 0.88 × 0.84 = '''0.7392'''.
+# Multiply the remainders: {{#expr: 1 - {{#var: Item1Duration}}}} × {{#expr: 1 - {{#var: Item2Duration}}}} = '''{{#vardefineecho: CombinedItemDuration|{{#expr: (1 - {{#var: Item1Duration}}) * (1 - {{#var: Item2Duration}}) round 4}}}}'''.
-# Subtract from 1: 1 - 0.7392 = '''0.2608'''.
+# Subtract from 1: 1 - {{#var: CombinedItemDuration}} = '''{{#expr: 1 - {{#var: CombinedItemDuration}} round 4}}'''.
-# Total Cooldown Reduction is approximately '''26%''', not 28%.
+# Total Cooldown Reduction is '''{{#expr: (1 - {{#var: CombinedItemDuration}}) * 100 round 1}}%''', not {{#expr: ({{#var: Item1Duration}} + {{#var: Item2Duration}}) * 100 round 1}}%.
 == Sources of Ability Cooldown Reduction ==