Unit collision  单位碰撞

A unit's pathing radius is a stat that determines the gameplay area they occupy for unit-collision and pathfinding logic. A unit's center cannot intersect with another unit's pathing radius, unless one of them is ghosted.

A unit that is ghosted ignores unit collision, allowing them to move through other units and other units to move through them.

A dash is a quick movement action by a unit in which they move to a specific direction or location while traversing the intervening distance, ignoring the boundaries of terrain.

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The game engine does not take into account the height of the unit; dashes that depict air travel are considered to be on the ground for targeting purposes such as skill-shots.

• Dashes should not be confused with displacement effects, which are usually sourced from enemy units (and are classified as crowd control debuffs).
• Dashes are interrupted by stasis (from an enemy), knockdown, and blinks.
• Dashes are overridden by all move blocks, which includes displacements and other dashes, as well as a few other cases.
• Not all dashes can traverse terrain (e.g. Justice Punch, Searing Charge, Tumble).
• Some dashes gain increased distance when directed through terrain (e.g. Umbral Dash, Perfect Execution, Phantom Undertow).

A blink refers to a form of movement whereby a unit displaces from point A to B without traversing the space between.

Stealth conceals a unit from enemies' view and prevents them from selecting it, and grants ghosting while not seen. Stealth allows one to avoid and ambush enemies or re-position in a fight.

• There are three categories of stealth, based on the conditions necessary to gain sight of the user: Camouflage, Invisibility, and stealthed traps. True sight invariably reveals stealthed units.
• Certain actions may break stealth, such as starting an attack, casting an ability, using certain item actives, and others.
• A stealthed unit's character model briefly shimmers for every instance of damage taken while stealthed. This shimmering does not make the unit selectable nor remove the effect, it only compromises the unit's position.

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Stealth is not a form of untargetability; units can still be hit by effects that do not require sight of targets, such as auto-targeted, direction-targeted (skillshots) and location-targeted effects.

Sight is a property of units, structures, certain summoner spells, items, and abilities that represents a team possessing vision of a target area or unit. It is always center range. A line of vision cannot extend beyond terrain or an unrevealed brush.

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Sight can also refer to an effect that makes a unit visible regardless of the fog of war or brush, allowing them to be targeted. Standard sight cannot see stealthed units, but True Sight can.

• Nearsight is a crowd control debuff that inhibits sight; allied vision is lost in addition to a reduced sight radius.
• Obscured vision is similar to sight in a way that it can observe units, but does not render units targetable, rather it exposes their position and informs of their presence.
• Unobstructed vision is a form of sight that allows a unit to be able to see their full vision radius, ignoring any obstructions that would otherwise restrict visibility.
• All effects that use unit-targeting require sight of the target. Delayed unit-targeted attacks and spells can cancel if sight of the selected target is suddenly lost.