To-hit - Revision history

MZero: /* Your characteristics and status */ Updated description and source code reference for Luck To Hit bonus for Nethack 5.0.0, preserved a description of luck bonus for older versions.

2026-05-25T10:42:07Z

‎Your characteristics and status: Updated description and source code reference for Luck To Hit bonus for Nethack 5.0.0, preserved a description of luck bonus for older versions.

Phol ende wodan: /* Your characteristics and status */ 3.7: nerfed Luck bonus on to-hit chance

2026-01-24T22:37:57Z

‎Your characteristics and status: 3.7: nerfed Luck bonus on to-hit chance

A1: Adding range of luck as between -13 and +13

2025-03-13T05:03:46Z

Adding range of luck as between -13 and +13

Tomsod: actually weapon and spell boni are the same table

2024-11-20T17:54:30Z

actually weapon and spell boni are the same table

Tomsod: /* Spells */ rework the math so it's stated in terms of the same (to-hit > 1d20) check as for weapons

2024-11-20T17:50:12Z

‎Spells: rework the math so it's stated in terms of the same (to-hit > 1d20) check as for weapons

Umbire the Phantom: languages + lede

2024-02-18T15:52:44Z

languages + lede

Umbire the Phantom: potholes

2024-02-12T01:35:43Z

potholes

Ardub23: Replaced hyphens (-) with minus signs (−) where appropriate

2019-09-07T20:12:20Z

Replaced hyphens (-) with minus signs (−) where appropriate

Show changes

Phol ende wodan: /* Two weapon penalty */ Add riding penalty table

2017-09-01T21:51:12Z

‎Two weapon penalty: Add riding penalty table

Netzhack: "chance to" = opportunity; "chance of" = probability

2016-12-28T14:06:58Z

"chance to" = opportunity; "chance of" = probability

@@ Line 19: / Line 19: @@
 * +1 for all melee attacks.{{refsrc|uhitm.c|236|comment=base +1 for melee}}
 * Bonuses based on your [[strength]] and [[dexterity]] (see [[#Strength bonus|strength table]] and [[#Dexterity bonus|dexterity table]]).{{refsrc|weapon.c|688|comment=strength and dexterity bonuses}}
 * A bonus equal to your [[experience level]], if you are in your natural form.
 * A bonus equal to your [[monster level]] (hit dice) if you are [[polymorph]]ed.{{refsrc|uhitm.c|237|comment=natural and polymorphed level bonuses}}
@@ Line 26: / Line 25: @@
 * &minus;3 if you are currently [[trap]]ped.{{refsrc|uhitm.c|278|comment=trap penalty}}
 * If you are [[engulfing|engulfed]], you always hit.{{refsrc|uhitm.c|478|comment=always hit if engulfed}}
-{{upcoming|NetHack 3.7.0|The Luck bonus now varies from -5 to +5, computed by floor((Luck + 2 / 3)). This means that +1 or -1 luck still have an effect on to-hit.}}
+In [[NetHack 3.6]] and earlier, the luck bonus (or penalty) directly equals your current luck, ranging from -13 to +13. {{refsrc|uhitm.c|236|comment=Luck bonus}}
 === Skills ===

@@ Line 26: / Line 26: @@
 * &minus;3 if you are currently [[trap]]ped.{{refsrc|uhitm.c|278|comment=trap penalty}}
 * If you are [[engulfing|engulfed]], you always hit.{{refsrc|uhitm.c|478|comment=always hit if engulfed}}
 === Skills ===

@@ Line 19: / Line 19: @@
 * +1 for all melee attacks.{{refsrc|uhitm.c|236|comment=base +1 for melee}}
 * Bonuses based on your [[strength]] and [[dexterity]] (see [[#Strength bonus|strength table]] and [[#Dexterity bonus|dexterity table]]).{{refsrc|weapon.c|688|comment=strength and dexterity bonuses}}
-* A bonus equal to your [[Luck]].{{refsrc|uhitm.c|236|comment=Luck bonus}}
+* A bonus equal to your [[Luck]] which varies from -13 to +13. {{refsrc|uhitm.c|236|comment=Luck bonus}}
 * A bonus equal to your [[experience level]], if you are in your natural form.
 * A bonus equal to your [[monster level]] (hit dice) if you are [[polymorph]]ed.{{refsrc|uhitm.c|237|comment=natural and polymorphed level bonuses}}

@@ Line 29: / Line 29: @@
 === Skills ===
-* A bonus or penalty from &minus;4 to +3 ([[#Weapon skill bonus|see table]]), depending on your [[skill]] with the wielded weapon, if you are not two-weaponing.{{refsrc|weapon.c|1109|comment=skill bonus}}
+* A bonus or penalty from &minus;4 to +3 ([[#Skill bonus|see table]]), depending on your [[skill]] with the wielded weapon, if you are not two-weaponing.{{refsrc|weapon.c|1109|comment=skill bonus}}
 * A penalty from &minus;9 to &minus;3 ([[#Two weapon penalty|see table]]), depending on your [[two weapon combat]] skill (or your weapon skill, if it is lower), if you are two-weaponing.{{refsrc|weapon.c|1118|comment=two weapon penalty}}
 * No bonus for [[bare hands]] or [[martial arts]] skill.{{reffunc|weapon.c|weapon_hit_bonus|comment=This function is never called because {{sourcecode|uhitm.c|283}} or {{sourcecode|uhitm.c|1957}} checks if you're wielding something}}
@@ Line 90: / Line 90: @@
 * +2 if throwing or kicking an item that counts as a throwing weapon.
 * &minus;2 if throwing or kicking an item that is neither a throwing weapon nor ammo.
-* A bonus or penalty from &minus;4 to +3 ([[#Weapon skill bonus|see table]]), depending on your [[skill]] with the thrown item, unless you throw ammo without wielding the appropriate launcher.
+* A bonus or penalty from &minus;4 to +3 ([[#Skill bonus|see table]]), depending on your [[skill]] with the thrown item, unless you throw ammo without wielding the appropriate launcher.
 == Spells ==
@@ Line 98: / Line 98: @@
 * There's an effective base +17 bonus. <!-- (TH + 1d20 > 4) <-> (TH + 21 - 1d20 > 4) <-> (TH + 17 > 1d20) -->
-* A bonus or penalty from &minus;4 to +3 ([[#Spell skill bonus|see table]]), depending on your [[skill]] with the spell school.{{refsrc|zap.c|2540|comment=skill bonus}}
+* A bonus or penalty from &minus;4 to +3 ([[#Skill bonus|see table]]), depending on your [[skill]] with the spell school.{{refsrc|zap.c|2540|comment=skill bonus}}
 * A bonus based on your dexterity (see [[#Dexterity bonus|dexterity table]]).{{refsrc|zap.c|2548|comment=spell dexterity bonus}}
-* If the ''1d20'' roll is 20, <!-- actually 1 but we inverted it --> add a random number between -7 and +2 inclusive.
+* If the ''1d20'' roll is 20, <!-- actually 1 but we inverted it --> add a random number between &minus;7 and +2 inclusive.
 * If the monster's AC is non-negative, or the roll is 20, add the monster's AC.
 * If the monster's AC is negative, and the roll is not 20, add a random number between &minus;1 and its AC.
@@ Line 168: / Line 168: @@
 |}
-=== Weapon skill bonus ===
+=== Skill bonus ===
 The weapon [[skill]] bonus applies to both melee and ranged attacks.
 {|class="prettytable"
@@ Line 178: / Line 179: @@
 |-
 |Basic || 0
 |-
 |Skilled || +2

@@ Line 94: / Line 94: @@
 == Spells ==
-Spells to-hit calculation is quite different. For ray spells, your to-hit bonus must exceed the result of 4 ''minus'' 1d20.
+Spell to-hit calculation is coded differently, but can be stated in the same terms as for weapons.
+For ray spells, only several factors matter:{{reffunc|zap.c|zap_hit}}
 * A bonus or penalty from &minus;4 to +3 ([[#Spell skill bonus|see table]]), depending on your [[skill]] with the spell school.{{refsrc|zap.c|2540|comment=skill bonus}}
 * A bonus based on your dexterity (see [[#Dexterity bonus|dexterity table]]).{{refsrc|zap.c|2548|comment=spell dexterity bonus}}
-* If the monster's AC is non-negative, add the monster's AC.
+* If the ''1d20'' roll is 20, <!-- actually 1 but we inverted it --> add a random number between -7 and +2 inclusive.
-* If the monster's AC is negative, add a random number between &minus;1 and its AC.
+* If the monster's AC is non-negative, or the roll is 20, add the monster's AC.
-Non-ray spells work differently. {{spell of|Force bolt}} will hit if the roll of a d20 is lower than (10 + target's AC), with no modification for dexterity or skill. Other beam and non-directional spells will always hit, but may be [[Magic resistance (monster)|resisted]].
+Attack [[wand]]s behave the same as the corresponding spells, but skill and dexterity bonuses do not apply to them.
 == Bonus tables ==

← Older revision		Revision as of 15:52, 18 February 2024
Line 1:		Line 1:
−	~~When~~ attacking a [[monster]], you must make a successful '''to-hit''' [[D notation\|roll]] to actually strike it~~. To do this,~~ your to-hit ~~bonus~~ must exceed the roll of ''1d20''.{{refsrc\|uhitm.c\|478\|comment=to-hit roll}} ~~Otherwise, your attack misses.~~	+	{{languages}}
		+	In ''[[NetHack]]'', when attacking a [[monster]] you must make a successful '''to-hit''' [[D notation\|roll]] to actually strike it - your total to-hit must exceed the roll of ''1d20'', or your attack will miss.{{refsrc\|uhitm.c\|478\|comment=to-hit roll}}

	== Melee ==		== Melee ==

@@ Line 42: / Line 42: @@
 === Monster-specific ===
-* +2 for using a [[blessed]] weapon against a [[demon]] or [[undead]].{{refsrc|weapon.c|142|comment=blessed bonus against demons/undead}}
+* +2 for using a [[blessed]] weapon against a [[M2_DEMON|demon]] or [[undead]] monster.{{refsrc|weapon.c|142|comment=blessed bonus against demons/undead}}
 * +2 for using any [[spear]] against a "[[kebabable]]" monster: [[xorn]]s, [[naga]]s, [[dragon]]s, [[jabberwock]]s, and [[giant]]s.{{refsrc|weapon.c|145|comment=spear versus "kebabable" monster}}
 * +4 for using a [[trident]] against any [[swimmer]] that is in [[water]].{{refsrc|weapon.c|149|comment=trident versus swimmers}}
@@ Line 70: / Line 70: @@
 * A bonus (or penalty) equal to the weapon's [[enchantment]], if using a [[weapon]].
 * The natural to-hit bonus of the item, if it is a weapon or [[gem]].
-* +2 for using a [[blessed]] weapon against a [[demon]] or [[undead]].{{refsrc|weapon.c|142|comment=blessed bonus against demons/undead}}
+* +2 for using a [[blessed]] weapon against a demon or undead creature.{{refsrc|weapon.c|142|comment=blessed bonus against demons/undead}}
 * +2 for using any [[spear]] against a "kebabable" monster: [[xorn]]s, [[naga]]s, [[dragon]]s, [[jabberwock]]s, and [[giant]]s.{{refsrc|weapon.c|145|comment=spear versus "kebabable" monster}}
 * +4 for using a [[trident]] against any [[swimmer]] that is in [[water]].{{refsrc|weapon.c|149|comment=trident versus swimmers}}

@@ Line 239: / Line 239: @@
 !Penalty
 |-
-|Restricted or<br />Unskilled
+|Restricted or Unskilled
 | -9
 |-
@@ Line 252: / Line 252: @@
 |}
 === Monster size bonus ===

@@ Line 1: / Line 1: @@
-When attacking a [[monster]], you must make a successful '''to-hit''' [[D_notation | roll]] to actually strike it. To do this, your to-hit bonus must exceed the roll of ''1d20''.{{refsrc|uhitm.c|478|comment=to-hit roll}}
+When attacking a [[monster]], you must make a successful '''to-hit''' [[D_notation | roll]] to actually strike it. To do this, your to-hit bonus must exceed the roll of ''1d20''.{{refsrc|uhitm.c|478|comment=to-hit roll}} Otherwise, your attack misses.
 == Melee ==
-These are some of the factors that might affect your chance to hit in [[melee]]:
+These are some of the factors that might affect your chance of hitting in [[melee]]:
 === Weapon and equipment ===
@@ Line 51: / Line 51: @@
 == Ranged ==
-These are some of the factors that might affect your chance to hit when [[throw]]ing or [[kick]]ing items, or when [[apply]]ing a [[polearm]]:
+These are some of the factors that might affect your chance of hitting when [[throw]]ing or [[kick]]ing items, or when [[apply]]ing a [[polearm]]:
 * -1 for all ranged attacks.{{refsrc|dothrow.c|1198|comment=base -1 for ranged}}