Difference between revisions of "AC calculations"
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The formula for calculating the actual AC granted by wearing a piece of armour is as follows: | The formula for calculating the actual AC granted by wearing a piece of armour is as follows: | ||
| − | (base AC) * ( | + | (base AC) * (Armour skill / 22 + 1) |
| − | This means that every level in the [[Armour skill]] increases a piece of armour's AC by approximately 4.5% of its base AC | + | This means that every level in the [[Armour skill]] increases a piece of armour's AC by approximately 4.5% of its base AC. |
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Note that fractional AC from multiple pieces of armour does add! Fractions are not truncated until the contribution from all armour pieces are summed. For example, both a [[helmet]] and a pair of [[gloves]] have 1 base AC, so at an Armour skill of 12 they each provide 1.55 AC, which is rounded down to 1 AC when worn individually. When worn together, their contributions sum to 3.1 AC, which is rounded down to 3 AC. | Note that fractional AC from multiple pieces of armour does add! Fractions are not truncated until the contribution from all armour pieces are summed. For example, both a [[helmet]] and a pair of [[gloves]] have 1 base AC, so at an Armour skill of 12 they each provide 1.55 AC, which is rounded down to 1 AC when worn individually. When worn together, their contributions sum to 3.1 AC, which is rounded down to 3 AC. | ||
Revision as of 21:12, 13 September 2017
This page explains how the game calculates and uses AC.
Calculating AC from Armour
The formula for calculating the actual AC granted by wearing a piece of armour is as follows:
(base AC) * (Armour skill / 22 + 1)
This means that every level in the Armour skill increases a piece of armour's AC by approximately 4.5% of its base AC.
Note that fractional AC from multiple pieces of armour does add! Fractions are not truncated until the contribution from all armour pieces are summed. For example, both a helmet and a pair of gloves have 1 base AC, so at an Armour skill of 12 they each provide 1.55 AC, which is rounded down to 1 AC when worn individually. When worn together, their contributions sum to 3.1 AC, which is rounded down to 3 AC.
Other Sources of AC
All other sources of AC are applied directly to a character's total AC and are not modified by Armour skill whatsoever. These include:
- Bonus AC from enchanted armour, rings of protection, or artefacts
- Magical AC boosts such as Ozocubu's Armour or Stoneskin
- AC from transmutations such as Necromutation, Statue Form and Dragon Form
- AC from mutations (e.g. scales) and intrinsics (e.g. a naga's increasingly tougher skin)
