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| | [[Image:Mewtwouair.gif|thumb|200px|right|Example of Red, Orange, and Yellow Collision Bubbles, as demonstrated with [[Mewtwo (SSBM)|Mewtwo's]] U-Air]] |
| :''For the website, see [[hitbox.tv]].''
| | A '''hitbox''' is the area of an attack that is able to damage your opponent. This area is invisible and is not always part of what is used to attack. Game developers use the term '''collision bubbles''' to describe hitboxes as well as the area of an object or character that the hitbox interacts with. Collision bubbles can only be viewed in [[Debug Mode]]. The status of each kind of collision bubble is represented by its color: |
| [[File:Mewtwo Up Aerial Hitbox Melee.gif|thumb|200px|An example of offensive and damageable collision bubbles in ''Melee'', as demonstrated with {{SSBM|Mewtwo}}'s up aerial. Yellow bubbles are hurtboxes, and red bubbles are hitboxes.]]
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| A '''hitbox''' or '''collision bubble''' (also known as a '''hitbubble''' and officially called an '''attack collision''' in ''Smash''<ref>[https://youtu.be/rwwF_4blK-o Always Keep Attack Collision in Mind <nowiki>[Animation]</nowiki>]</ref>) is the main structure for how attacks are executed in most fighting games. An attack's hitbox is the part of that attack that can deal damage when touched. A character's '''hurtbox''' (also called a '''hurtbuble''') is the part of a character which, when touched by a hitbox, causes the character to take damage. In other words, when an attack's hitbox overlaps with a hurtbox, the attack is considered a hit. An attack may have more than one hitbox associated with them, and while hitboxes are invisible, they usually, though not always, have the same shape as the attack's animation.
| | *Yellow represents a damagable area- The bodies of the characters and destructible stage areas. |
| | *Orange represents a damagable hitbox- These can be found on projectiles with a lifespan that can be reduced by receiving attacks ([[Ness]]' PK Fire, [[Link]] or [[Young Link]]'s bombs and arrows, [[Sheik]]'s needles). Unknown if it's actually a separate hitbox type or simply a yellow and red hitbox of exactly the same size in the same place. |
| | *Red represents a damaging hitbox- These can be found on most non-[[grab]] attacks. |
| | *Purple represents a grab hitbox- These can be found on grabs as well as [[Ganondorf]]'s [[Dark Dive]], [[Captain Falcon]]'s [[Falcon Dive]], [[Kirby]]'s [[Swallow]], [[Yoshi]]'s [[Egg Lay]], and [[Bowser]]'s [[Koopa Klaw]]. All these attacks share the characteristic of being able to penetrate the enemy's shield. |
| | *Blue represents [[invincibility frames|invincibility]]: an area of a character that is immune to attacks. This usually occurs as part of a dodge. Characters that attack something with blue collision bubbles will not suffer [[hitlag]] - essentially, blue collision bubbles do not exist for collision detection. (For example, when the blocks in [[Mushroom: Kingdom]] are broken, they turn from yellow to blue.) |
| | *Green represents a temporarily non-damagable area- for instance, a character who has been off of the spawn platform for no more than two seconds, or for 8 [[frame]]s at the start of a throw. Characters that attack something with green collision bubbles will suffer hitlag. |
| | *Blue-green represents an area attached to a character that can interact with hitboxes in a specific way. It applies to shields (including [[Link]] and [[Young Link]]'s hand shields), [[counter]]s ([[Marth]] and [[Roy]]), reflectors, and absorbers ([[Ness]] and [[Mr. Game & Watch]]'s [[down B]]). |
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| ==Overview== | | == Disjointed Hitbox == |
| [[File:SSBU Training Hurtboxes.png|thumb|250px|''[[Super Smash Bros. Ultimate]]''{{'}}s [[Training mode]] displaying hurtboxes for invulnerability: {{SSBU|Mario}} is [[invincible]] due to a [[Super Star]], while {{SSBU|Ridley}}'s wing, head, and arm are [[intangible]] due to his [[up tilt]].]]
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| The two most common forms of hitbox shapes in video games are {{iw|wikipedia|cuboid}}s and spheres. Neither is obviously better than the other - cuboids can more easily form long or thin attacks or targets, while spheres are easier to calculate collision detection for. ''[[Smash 64]]'' uses cuboids whereas ''[[Melee]]'', ''[[Brawl]]'', ''[[Smash 4]]'', and ''[[Ultimate]]'' use spheres and sphere-like structures known as capsules (cylinders with spheres on the ends).
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| In ''Smash 64'', hacks can enable hitbox visibility (with a few limitations), such as in [[Media:SSB Hurtboxes.png|this image]]. In ''Melee'', hitboxes can be seen with the {{SSBM|debug menu}} if set to [[Debug menu (SSBM)/DEVELOP mode|DEVELOP]], though accessing it requires a cheating device. There is no easy way to display hitboxes in-game in later games, though a common technique in ''Brawl'' is to use hacks to place [[Super Scope]] shot visuals where the hitboxes are (which is significantly more involved a process and generally fails for any [[projectile]] or [[item]]). ''Ultimate''{{'}}s [[Training mode]] natively includes an option to display characters' hurtboxes when [[invincible]] or [[intangible]], though only their portions that overlay with the character's model are shown, rather than their true shapes.
| | '''Disjointed hitbox''' describes an attacking red collision bubble that is not attached to the vulnerable yellow bubble. These are generally found on weapons, like swords or hammers. A disjointed hitbox, if attacked, cannot hurt the character. For example, If [[Marth]] attacks [[Ness]]'s [[PK Fire]] with his [[forward smash]], [[Marth]] will not be affected. However, if [[Mario]] punches the [[PK Fire]], he will sustain damage. Some disjointed hitboxes, such as [[Snake]]'s up tilt, are placed in very unexpected spots and, as such, can be used to surprise an opponent, not expecting a hitbox to extend so far. Famous disjointed hitbox's include Snake's Up tilt in Brawl and Kirby's up tilt in Smash 64. |
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| Should multiple hitboxes of a single move connect with the opponent, only one of them will count. The order of precedence is known as the "hitbox stack" - hitboxes higher in the stack will override ones lower should they both hit at the same time. Mechanically, this is denoted by giving each hitbox an ID number, and lower numbers indicate higher precedence (higher stack position). For example, [[Marth]]'s [[down aerial]] in ''Melee'' features its [[tipper]] hitbox on top of the stack, so hitting with both a tipper and non-tipper hitbox will result in the tipper counting, even if the majority of the opponent was hit by the other hitboxes. By contrast, the move in ''Brawl'' has the tipper on the bottom, so the tipper can only hit if none of the other hitboxes do. As a result, even though the sizes and positions of the hitboxes did not change much between games, the tipper is more difficult to hit in ''Brawl'' than in ''Melee''.
| | == Trapbox == |
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| {{anchor|Disjointed hitboxes}}
| | The hitbox left on the ground during [[Ness]]' [[Yoyo Glitch]]. As with all hitboxes, trapboxes are invisible. It is called a trapbox because this hitbox is not attached at all to any kind of attack but instead just sits on the ground or, in some cases, floats in the air. |
| [[File:Link disjoints.gif|thumb|left|150px|{{SSB|Link}} uses his forward smash on a wall in his ''Smash 64'' [[Break the Targets]] level and successfully breaks a target due to his sword's disjoint, he then uses his non-disjointed neutral air on a target above it and fails to break it.]]
| | [[Category:Terms]] |
| Hitboxes that are separated from a character's hurtboxes are often called '''disjointed''', which is usually an advantage, as they can connect from a farther distance, while keeping the attacker safer from retaliation and reducing the likelihood of trading blows. Examples of disjointed hitboxes include most weapon-based attacks, and more infamously the [[up tilt]]s of {{SSB|Kirby}} in ''Smash 64'' and {{SSBB|Snake}} in ''Brawl'', as well as some of {{SSBU|Joker}}'s moves when using Arsene.
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| An interesting property of hitboxes in the ''Super Smash Bros.'' series is that under most conditions, they occupy not only the space where they currently are, but also the space where they were one [[frame]] ago, as well as all the space in between (in a straight line, regardless of what the animation might look like during intervening subframes). This characteristic, known as '''interpolation''', helps to prevent situations where a fast projectile may end up passing through a character in less than a frame without hitting them. On the other hand, hurtboxes do not interpolate in this way, so a fast-moving object (such as [[Fox]] during his [[Fox Illusion|Illusion]]) may be able to move through a slow or stationary hitbox without being damaged. In addition, certain hitboxes from ''Brawl'' onward use a stretch effect to create a very long hitbox, for example in {{b|Zero Laser|Samus}} and [[Aura Storm]], instead of interpolating. It is unclear how this hitbox-stretching mechanism operates when time is [[slowdown|slowed]] via Training mode or other effects, as the games render subframes, whereas ''Smash 64'' and ''Melee'' simply reduce the overall framerate.
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| ===Hitboxes in three dimensions===
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| [[File:3D Hitboxes in Melee.png|thumb|250px|While the regular camera suggests Mario should have been hit already, a side view shows otherwise.]]
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| It is a common misconception that, like in most other fighting games, hitboxes and hurtboxes only operate in two dimensions. In actuality, they interact in all three dimensions equally, even though the majority of gameplay elements are restricted to two-dimensional movement. As a result, ''Super Smash Bros.'' is more accurately described as a [[wikipedia:2.5D#3D games with a two-dimensional playing field|2.5D]] game.
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| Animations for a game like ''Smash'' are typically created so that hitboxes always activate on a median line, meaning collision occurs in the same relative spot without many unexpected interactions. This also facilitates the need for designers to carefully consider when hitboxes will activate, as a hitbox being active at a very early or very late part of an attack animation can lead to more unexpected interactions.<ref>[https://www.youtube.com/watch?v=rwwF_4blK-o Always Keep Attack Collision in Mind <nowiki>[Animation]</nowiki>]</ref>
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| Notable examples of unexpected behavior due to the 3D nature of hitboxes include:
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| *Animations where characters lean sideways can result in attacks missing them. King Dedede's [[spot dodge]] in ''[[Brawl]]'' is a notorious example, allowing him to dodge attacks with narrow hitboxes even after his intangibility ends.<ref>[https://www.youtube.com/watch?v=079p47Y42Og Metagame Minute Ep2: D3's Broken Spot Dodge - SSBB]</ref>
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| *Attacks that swing in a horizontal arc can hit characters of different widths at different times. For example, Peach's [[neutral aerial]] in ''[[Smash 4]]'' usually hits Zero Suit Samus a frame later than most other characters. Similarly, Yoshi's running [[grab]] in ''[[Melee]]'' is so off to the side of the playing plane that it often misses skinny characters, such as Zelda or Marth, which is demonstrated in [https://youtu.be/zzRwSiMm3Zg?t=547 this clip] where [[aMSa]]'s Yoshi misses a grab at point blank range against [[PewPewU]]'s Marth.
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| When playing on a two-dimensional stage such as [[Flat Zone]], many of these quirks disappear, due to characters being almost completely flattened along the camera's axis. However, some new quirks can arise: if hitboxes are produced when an arcing attack is normally not yet in the playable plane, the flattening effect results in them being able to hit earlier than expected. For example, [[Charizard]]'s [[forward tilt]] in ''Smash 4'' can land its [[flame]] hitbox sooner than usual. It is also important to note that only the characters are flattened; their hitboxes and hurtboxes continue to operate as three-dimensional objects in a three-dimensional world, so maneuvers such as using the [[Dragoon]] are not affected.
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| Players tend to refer to any unexpected behavior of this nature as fault of the "z-axis", as z traditionally refers to the third dimension in a three-dimensional environment. This tends to result in confusion when character moveset data is decoded, as while the camera's axis is indeed along the z-axis of stages, for characters and most other gameplay objects, the z-axis is the one that points forwards.
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| {{clr}}
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| ==Hitbox types==
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| [[File:HitboxBubblesSSBM.png||thumb|250px|The different types of hitboxes and hurtboxes visualized in ''Melee''.]]
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| {|class="wikitable" align="center"
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| !Hitbox Type!![[Debug menu (SSBM)/DEVELOP mode|Debug mode]] Colour!!Explanation
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| |Offensive||style="background:rgba(255,0,0,0.5)"|Red||The standard type of attacking hitbox. From ''Brawl'' onward, there are various types of offensive hitboxes, some of which have unique properties (like the ability to ignore [[shield]]s).
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| |Damageable||style="background:rgba(255,255,0,0.5)"|Yellow||The standard type of damageable area, also known as hurtboxes. Characters have a variety of these attached to their bodies, while damageable stage areas (such as the wedge of ice on the [[Summit]]) and non-playable entities (like [[enemies]] and [[boss]]es) use them as well.
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| |Invincible||style="background:rgba(0,255,0,0.5)"|Green||Invincible targets can be hit by attacks, but do not take any [[damage]] or [[knockback]] from them. For example, this occurs for characters that have just stepped off a [[revival platform]], or have acquired a [[Super Star]].
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| |Intangible||style="background:rgba(0,0,255,0.5)"|Blue||Intangible targets cannot be hit by attacks. This occurs during actions such as [[dodge]]s, [[tech]]s, and [[ledge]] getups. Various characters' attacks provide certain parts of their body with intangibility, such as Mario's head during his [[up smash]].
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| |Grab||style="background:rgba(255,0,255,0.5)"|Magenta||[[Grab]] hitboxes ignore any special or defensive hitboxes.
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| |Shield||style="background:rgba(0,255,255,0.5)"|Cyan||Defensive hitboxes that [[shield]] attacks, unless they are grabs or unblockable. Also used by moves such as most [[counterattack]]s.
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| |Reflective||style="background:rgba(0,255,127,0.5)"|Aqua||Defensive hitboxes that [[reflect]] attacks.
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| |Absorbing||style="background:rgba(0,127,255,0.5)"|Cyan-blue||Defensive hitboxes that [[absorb]] attacks.
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| |Inert||style="background:rgba(191,191,191,0.5)"|Grey||Inert hitboxes are used for collision detection when a regular hitbox is unsuitable, such as the dash of [[Raptor Boost]] and [[Gerudo Dragon]].
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| |}
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| ==Hitbox properties==
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| ===Normal properties===
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| {|class="wikitable"
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| !Property!!Introduced in!!Description
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| |ID||''Smash 64''||The priority of the hitbox compared to the move's other hitboxes. If multiple hitboxes of an attack connect within the same frame, the hitbox with the lowest ID value registers the hit. This property is imperative to determine the precision and spacing for landing {{b|sweet spot|hitbox}}s; usually, hitboxes closer to the attacker have a lower ID (higher priority), regardless of whether they are sourspots or sweetspots.
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| |Part||''Smash 64''||Determines how many hitboxes can hit in one attack. If a hitbox has a part value of 1, for example, it can connect after landing a hitbox with a part value of 0. The vast majority of attacks use a part of 0 for all their hitboxes; instead, this property is reserved for certain multi-hit moves such as [[Marth]]'s [[up smash]] in ''Brawl'' and ''Smash 4'', to allow both the launcher (part 0) and sword hitboxes (part 1) to come out on the same frame and be considered multiple hits. However, a few oddities arise if hitboxes of different parts hit in the same frame:
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| *If the hitbox with a lower part deals much higher knockback, even if [[set knockback|fixed]], it overrides the higher part's knockback, resulting in unusual behavior for a multi-hit move. The aforementioned up smash is particularly prone to this situation at low percents.
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| *If the hitbox with a lower part is [[shield]]ed, but the higher part [[shield stab]]s, the entire move is shielded, but the higher part still produces its graphical and sound effects.
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| |[[Bone]]||''Smash 64''||The bone of a character model the hitbox is connected to, which can be a numerical or text value. A bone of 0 or "top" only follows the character's position, while other values correspond to different bones of a character (such as an arm, leg, or in the case of swordfighters, a portion of the sword), and follow their movement even if the character themselves do not change position. Several attacks, particularly arcing swings, employ this property so their hitboxes can cover a wide area around the character without having to manually change their placement every frame; in later games, the latter measure is only done in specific cases to avoid blindspots.
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| |[[Damage]]||''Smash 64''||The base damage dealt by the hitbox. In the first three games, the initial damage is always an integer, but after ''Smash 64'', it rarely ends up as one once modified by factors like [[stale-move negation]]. From ''Smash 4'' onward, damage can be any number with up to six decimal values (per the {{s|wikipedia|single-precision floating-point format}}).
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| |[[Angle]]||''Smash 64''||The hitbox's launch trajectory, coded in degrees. Usually a number from 0 to 360, and can rarely be negative numbers such as -90. Depending on the game, values from 361 to 368 are reserved for special angles, such as the [[Sakurai angle]] (the default angle for horizontal-launching moves) or [[autolink angle]].
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| |Knockback scaling||''Smash 64''||Also known as knockback growth. A factor in the [[knockback]] formula, generally determining the rate at which the hitbox's knockback rises as the target's damage increases, with the default being 100. For example, a knockback scaling of 110 means knockback increases at a 1.1× rate compared to other hitboxes with the same damage and base knockback.
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| |Fixed knockback value||''Smash 64''||If not 0, causes the hitbox to deal a specific amount of knockback regardless of its damage or the target's, though it can still be modified by factors such as [[launch rate]] (prior to ''Smash 4'') or [[weight]].
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| |Base knockback||''Smash 64''||A factor in the knockback formula, generally determining the minimum knockback the hitbox can apply, though not being the only factor (the hitbox's damage and knockback scaling are relevant as well).
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| |Size||''Smash 64''||The hitbox's radius in units of distance.
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| |X position||''Smash 64''||The hitbox's horizontal displacement (in units of distance) relative to the bone it is attached to. In ''Smash 4'' and ''Ultimate'', for a bone of 0 or "top", this refers to the Z axis.
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| |Y position||''Smash 64''||The hitbox's vertical displacement (in units of distance) relative to the bone it is attached to.
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| |Z position||''Smash 64''||The hitbox's displacement in the foreground/background (in units of distance) relative to the bone it is attached to. In ''Smash 4'' and ''Ultimate'', for a bone of 0 or "top", this refers to the X axis.
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| |Effect||''Smash 64''||The hitbox's effect on hit, such as [[normal]], [[slash]], [[flame]], or [[electric]], among others. Can also be none.
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| |Groundness/Airness||''Smash 64''||Determines whether the hitbox can strike grounded opponents, aerial opponents, or both (or neither, but this is very rarely used). Attacks intended to have different behavior on grounded and aerial opponents (such as [[Samus]]' [[up tilt]] from ''Melee'' onward) generally use two hitboxes with the same placement, but differences in other properties as desired. In ''Ultimate'', hitboxes can also be set to not connect against [[Floor recovery|prone]] opponents, which is generally used for [[bury]]ing hitboxes.
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| |[[Shield damage]]||''Smash 64''||The hitbox's additional damage dealt to [[shield]]s; usually 0, which means the hitbox deals regular damage to shields. Can also be a negative value to have hitboxes deal less damage to shields, though this is only used in ''Smash 64'', ''Melee'' and ''Ultimate''.
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| |Clang||''Smash 64''||Determines whether the hitbox can cancel out other hitboxes through [[priority]] rules. In ''Smash 64'', if a hitbox that cannot clang interacts with another hitbox, the move will clash, but its animation will continue, rather than going through the [[rebound]] animation. In later games, hitboxes that cannot clang simply cannot interact with other hitboxes.
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| |Sound effect||''Smash 64''||The hitbox's sound effect on impact (punch, kick, slash, burn, or shock, among others), including sounds unique to certain characters (such as [[Cloud]]'s slash sounds). Can also be none.
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| |Sound level||''Smash 64''||The strength of the sound effect the hitbox produces on impact (small, medium, or large; huge can be applied for certain types).
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| |[[Rebound]]||''Melee''||If set, prevents a grounded move from being interrupted if the hitbox clangs with another, disregarding priority rules. This essentially has the same effect as the clang property did in ''Smash 64'', and is irrelevant if a hitbox cannot clang. In ''Ultimate'', this is merged with the clang property, which is set as "THRU" (rather than "ON" or "OFF") to determine that a hitbox can clang but not rebound.<br>In ''Brawl'' only, while this property is still present, it appears to be disabled altogether.
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| |Directness||''Melee''||Determines whether the hitbox is [[indirect]] or not, which is used for enemy/sticker interactions in ''Brawl'', and to determine a move's [[shieldstun]] from ''Smash 4'' onward, among other effects. In ''Melee'', the only known effect is that if an attack breaks a [[Metal Box]], it needs to be direct to give the attacker its effect. Not to be confused with a [[projectile]].
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| |Trip chance||''Brawl''||The hitbox's bonus [[trip]] chance; for example, a value of 0.4 yields a 40% bonus trip chance. Can also be negative to disable the base trip chance, which is used for certain multi-hit moves such as {{SSBU|Roy}}'s up smash in ''Ultimate''.
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| |Hitlag multiplier||''Brawl''||Set to 1 by default. Modifies the duration of [[hitlag]] applied on impact to both the attacker (except for projectiles) and victim.
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| |SDI multiplier||''Brawl''||Set to 1 by default. Modifies the distance of [[smash directional influence]] for opponents struck by the hitbox.
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| |Type||''Brawl''||Determines what kind of [[sticker]]s ([[spirit]]s in ''Ultimate'') can power up the hitbox, such as [[arm]], [[leg]], [[body]], or [[weapon]], among others.
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| |}
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| ===Special properties===
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| Prior to ''Ultimate'' some hitboxes are listed as "special hitboxes" which have additional properties. In ''Ultimate'', these properties are included for every hitbox.
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| {|class="wikitable"
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| !Property!!Introduced in!!Description
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| |Reflectiveness||''Smash 64''||Determines whether the hitbox can be [[reflect]]ed. Usually a [[projectile]].
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| |Absorptiveness||''Smash 64''||Determines whether the hitbox can be [[absorb]]ed. Usually a projectile, but can rarely be used for physical attacks, such as [[Zero Suit Samus]]' [[down smash]].
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| |[[Unblockable attack|Blockability]]||''Melee''||Determines whether the hitbox can be shielded. In ''Ultimate'', this property is merged with shield damage, which is listed as "no" if a hitbox is unblockable.
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| |Flinchless||''Melee''||If set, prevents the hitbox from inflicting hitstun or hitlag; any knockback coded for the hitbox instead pushes or pulls opponents, which is commonly referred to as a [[windbox]].
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| |Hit bits||''Melee''||Determines what a hitbox is capable of interacting with. This includes damageable stage objects (floors, ceilings, or other), or multiple opponents, as well as if it can connect against enemies from the [[Subspace Emissary]] in ''Brawl''. Most attacks can hit all specified objects, but certain others, such as [[Mario]]'s [[Fireball]]s, are set to ignore damageable floors so they cannot be stopped by [[Skyworld]]'s breakable platforms, for example.<br>From ''Smash 4'' onward, certain attacks that appear to have gaps between hitboxes, such as [[Tatsumaki Senpukyaku]] and [[Lucas]]' [[down smash]], actually consist of a single hitbox active throughout, which instead changes its hit bits to ignore opponents during the gaps, so that the attack can only hit each opponent once. In ''Ultimate'', Lucas' down smash retains this behavior, but uses a rehit rate to re-allow one strike per hitbox.
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| |Rehit rate||''Melee''||If not 0, allows the hitbox to strike again after the specified amount of frames. Commonly used for multi-hit moves in later games.
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| |Angle flipper||''Brawl''||Changes how the hitbox's launch angle is applied, such as causing it to always launch opponents in the direction the user is facing, or the opposite, instead of depending on the attacker's position relative to the opponent. Used for various attacks such as [[forward tilt]]s, [[forward smash]]es, [[forward aerial]]s, and [[back aerial]]s in ''Ultimate''. Also used by [[Back Slash]]'s back hit to launch opponents with a different animation that does not turn them around.
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| |Heedless||''Brawl''||If set, allows the hitbox to hit teammates even if [[team attack]] is turned off. Rarely used.
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| |Piercing||''Brawl''||If set, allows the hitbox to ignore [[invincibility]]. Rarely used.
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| |Disable hitlag||''Brawl''||If set, causes the hitbox to inflict no hitlag regardless of its hitlag multiplier. No longer used in ''Ultimate''.<!--DisableHitlag in the Ultimate calculator is false, it's actually the disable GFX property. Banjo's rapid jab and Aymr's shockwave have it enabled and still inflict knockback, but have no GFX-->
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| |Disable GFX||''Brawl''||Determines if a hitbox produces hit graphics if it connects. Usually disabled for "conventional" windboxes, producing a visual difference between pushing attacks such as [[F.L.U.D.D.]] and [[Finishing Touch]].
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| |Stretch||''Brawl''||Determines if a hitbox is stretched out, rather than being spherical. This allows them to cover more space right away, but prevents them from interpolating per frame.
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| |X stretch/X2||''Smash 4''||Determines how far a hitbox is stretched horizontally, with the same other properties as the standard X position. Alongside the other stretch coordinates, this is essentially an extension of the stretch property from ''Brawl'', denoting both ends of the hitbox.
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| |Y stretch/Y2||''Smash 4''||Determines how far a hitbox is stretched vertically, with the same other properties as the standard Y position.
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| |Z stretch/Z2||''Smash 4''||Determines how far a hitbox is stretched in the foreground/background, with the same other properties as the standard Z position.
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| |Set [[weight]]||''Smash 4''||If set, the hitbox calculates knockback with a weight of 100 for all opponents, effectively ignoring weight differences. This was a hitbox related flag in ''Smash 4'', but became a property in ''Ultimate''.
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| |Collision part||''Ultimate''||Determines what types of hurtboxes the hitbox can connect with (such as head, body, or legs). Used for [[Shield Breaker]]'s effect of dealing more damage if it hits an opponent's head.
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| |}
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| Some other properties have been found, but their effect is currently unknown.
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| ===Hitbox related flags===
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| These are flags used in an animation's script in order to create, alter, or remove different types of hitboxes.
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| {|class="wikitable"
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| !Flag!!Introduced in!!Description
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| |Hitbox||''Smash 64''||Creates a hitbox.
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| |Special hitbox||''Smash 64''||Creates a special hitbox.
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| |Collateral hitbox||''Smash 64''||Creates a hitbox that can only strike bystanders during a [[throw]], and not the thrown opponent. Used for moves such as [[Mario]]'s [[back throw]].
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| |Change hitbox damage||''Smash 64''||Changes the damage of a specific hitbox.
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| |Change hitbox size||''Smash 64''||Changes the size of a specific hitbox.
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| |Remove hitbox||''Smash 64''||Deletes a specific hitbox.
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| |Remove all hitboxes||''Smash 64''||Deletes all active hitboxes.
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| |Hitbox loop||''Smash 64''||Causes part of a move's hitbox script to execute a specified amount of times instead of only once (akin to loop functions in programming languages), usually to repeatedly create and remove hitboxes. This allows the move to hit multiple times, and is how most multi-hit moves without a rehit rate are handled, especially in earlier games.
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| |Check front/back||''Melee''||Restricts the hitbox to only hitting opponents from the front or from behind. Used for [[Disable]] (can only hit from the front) and [[Back Slash]] (has two sets of hitboxes for the respective front and back hits).
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| |Grab collision||''Brawl''||Creates a grabbox. In ''Smash 64'' and ''Melee'', grabs used a normal hitbox with a grab effect.
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| |Grab collision 2||''Brawl''||Creates a special grabbox. Typically used for command grabs.
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| |Remove grab collision||''Brawl''||Deletes a specific grabbox.
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| |Remove all grab collisions||''Brawl''||Deletes all active grabboxes.
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| |Inert collision||''Brawl''||Creates an inert collision.
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| |Extended hitbox||''Smash 4''||Creates a hitbox that can be stretched.
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| |Extended special hitbox||''Smash 4''||Creates a special hitbox that can be stretched.
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| |Set [[falling speed]]||''Smash 4''||Determines whether the hitbox considers the target's falling speed when knockback is calculated. Used only in ''Smash 4'' for Finishing Touch and [[Meteor Trampoline]].
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| |Set [[gravity]]||''Smash 4''||Determines whether the hitbox considers the target's gravity when knockback is calculated. Used only in ''Smash 4'' for Finishing Touch and [[Meteor Trampoline]].
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| |Attack whole||''Smash 4''||Gives the hitbox unlimited range, regardless of what its radius is. Used for [[Arceus]] and the [[POW Block]].
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| |Hitstun modifier||''Ultimate''||Changes the amount of [[hitstun]] the hitbox does when hitting an opponent. Due to a glitch, even if specified for certain hitboxes, it applies to all of a move's hitboxes until they are changed later in the script. However, some moves in later updates use a "revised" variant of the flag that properly applies hitstun modifiers only to the specified hitboxes.
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| |Shieldstun multiplier||''Ultimate''||Changes the amount of [[shieldstun]] the hitbox does to a shielding opponent. Due to a glitch, even if specified for certain hitboxes, it applies to all of a move's hitboxes until they are changed later in the script.
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| |[[Position vector]]||''Ultimate''||Causes the hitbox to launch the target towards a certain position within a certain number of frames, after which their launch speed proceeds normally. Used for a fair amount of multi-hits, chiefly those with the 368° autolink angle.
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| |Force knockback||''Ultimate''||Causes the hitbox to ignore any kind of [[armor]] when inflicting knockback. Used for [[counterattack]]s and most [[Final Smash]]es.
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| |Set attack height||''Ultimate''||If the attacker and target are at a (roughly) equal height, forces the target to use a specific kind of flinch animation (high, middle, or low) regardless of which of their hurtboxes is hit. Used for most down tilts and angled forward tilts.
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| |Critical hit||''Ultimate''||Causes only certain hitboxes of a move to produce a [[Special Zoom]] on hit. Used for moves such as {{SSBU|Ganondorf}}'s [[up tilt]] and a fully charged [[Wario Waft]].
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| |No finish camera||''Ultimate''||Prevents the hitbox from producing a [[Finish Zoom]], even if it would launch opponents far enough to do so. Generally used as a failsafe for certain multi-hit moves' linking portions.
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| |Disable tech||''Ultimate''||Prevents opponents from [[tech]]ing the hitbox's knockback. Only used for [[Cross Chop]]'s falling portion and [[Onslaught]]'s meteor smashing kick. A similar effect is present since ''Smash 4'' for certain [[Final Smash]]es such as [[Pair Up]], but not declared in hitbox scripts.
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| |[[Grab]] armor||''Ultimate''||If the hitbox strikes an opponent at the same time the user is grabbed by them, this property causes the opponent to [[armor]] through the hitbox and grab the user, much like in ''Brawl'', rather than forcing a [[grab release]]. Used only for {{SSBU|Sonic}}'s [[Homing Attack]], [[Spin Dash]], and [[Spin Charge]], as well as {{SSBU|Banjo & Kazooie}}'s [[Wonderwing]]. A multiplier can also be applied to the damage the grabber takes in this situation, which is set to 0.25× for Wonderwing.
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| |Angle modifier||''Ultimate''||Changes the hitbox's launch angle depending on the attacker's momentum, making it more vertical if moving backward, and more horizontal if moving forward. Only used for the last hit of the {{SSBU|Mii Brawler}}'s [[Helicopter Kick]].
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| |[[Freezing|Freeze]] multiplier||''Ultimate''||Modifies the initial amount of time a freezing hitbox freezes targets for. Used only for {{SSBU|Hero}}'s [[Kacrackle Slash]], which has a 2× multiplier.
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| ==Trapbox==
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| [[File:Melee-YoyoGlitch-Usefulness.gif|thumb|A hitbox stretching across interframe space.]]
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| In ''Melee'', a '''trapbox''' is the hitbox left on the ground during [[Ness]]' [[yo-yo glitch]]. It is called a trapbox because this hitbox is not attached at all to any kind of attack but instead just sits wherever it was when the glitch occurred. Using a new attack will overwrite the hitbox with the new attack's properties and relocate it to the new attack, which due to the interframe stretching effect will cause it to hit everything between it and Ness.
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| {{clr}}
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| ==Trivia==
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| [[File:What are hitboxes 2.jpg|thumb|An example of recoil animations making hitboxes appear to be unexpectedly large. Here, {{SSB4|Ryu}} is hitting {{SSB4|Lucina}} with a [[Shoryuken]], with the blue starburst showing where the collision occurred.]]
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| *In ''SSB'', grabs are normal hitboxes with no apparent mechanism for distinction from attacks. In ''Melee'', grab hitboxes and inert hitboxes are 0%-damage hitboxes with "grab" or "inert" for an effect. Both grabs and inert hitboxes are separate objects in ''Brawl'' and ''SSB4'', though in rare cases a 0%-damage hitbox is used as an inert one.
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| *The single largest hitbox in ''Melee'' can be found when [[Raikou]] is released from a [[Poké Ball]].
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| *Because characters enter a recoil animation upon being hit, pausing the game during hitlag can make it appear as if the attack's hitboxes are misaligned or too large, when in reality, a fighter was simply in a different pose prior to entering the hit animation. This phenomenon is sometimes referred to as "hurtbox shifting".
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| **This is especially prominent in ''Ultimate'' with the addition of [[Special Zoom]] and Finish Zoom. When an attack triggers one of these effects, the resulting zoom-in and slowdown can cause this apparent discrepancy to be much more noticeable.
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| ==Gallery==
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| <gallery>
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| Kirby Forward Tilt Hitbox Smash 64.gif|The hitboxes of {{SSB|Kirby}}'s forward tilt, with Kirby's collision boxes, in the original game.
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| ToonLinkHitBoxHack.png|An example of a hack used to show the hitboxes of {{SSBB|Toon Link}}'s [[Spin Attack]] in ''Brawl''.
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| </gallery>
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| ==References==
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| {{reflist}}
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| [[Category:Game physics]]
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| [[Category:Hitboxes]] | |
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