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96 lines
2.6 KiB
96 lines
2.6 KiB
2 weeks ago
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extends Area3D
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class_name HitBox
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## A component that deals damage to HurtBoxes
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## Attach to weapons or attack effects
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## Uses direct physics queries for reliable hit detection
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signal hit_landed(target: Node, damage: float, knockback: float, attacker_pos: Vector3)
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## Damage dealt on hit
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@export var damage: float = 10.0
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## Knockback force applied
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@export var knockback: float = 5.0
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## Owner entity (used to prevent self-damage and identify attacker)
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@export var owner_entity: Node = null
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## Whether hitbox is currently active (only deals damage when active)
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var is_active: bool = false
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## Tracks entities hit this attack (prevents multi-hit)
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var _hits_this_attack: Array[Node] = []
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## Shape for queries (extracted from child CollisionShape3D)
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var _query_shape: Shape3D = null
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func _ready():
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# Find the collision shape for queries
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for child in get_children():
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if child is CollisionShape3D and child.shape:
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_query_shape = child.shape
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break
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func _physics_process(_delta):
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if not is_active:
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return
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_check_hits()
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func _check_hits():
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if not _query_shape:
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# Fallback: create a default sphere
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var sphere = SphereShape3D.new()
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sphere.radius = 2.0
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_query_shape = sphere
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# Use physics server for reliable queries
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var space_state = get_world_3d().direct_space_state
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var query = PhysicsShapeQueryParameters3D.new()
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query.shape = _query_shape
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query.transform = global_transform
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query.collision_mask = 16 # Layer 5 (hurtbox)
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query.collide_with_areas = true
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query.collide_with_bodies = false
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var results = space_state.intersect_shape(query, 32)
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for result in results:
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var collider = result["collider"]
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if collider is HurtBox:
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_process_hit(collider)
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func _process_hit(hurtbox: HurtBox):
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# Don't hit our own hurtbox
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if hurtbox.owner_entity == owner_entity:
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return
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# Don't hit same entity twice in one attack
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if hurtbox.owner_entity in _hits_this_attack:
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return
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# Register this hit
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var target = hurtbox.owner_entity
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if target:
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_hits_this_attack.append(target)
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# Get attacker position for knockback direction
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var attacker_pos = global_position
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if owner_entity and owner_entity is Node3D:
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attacker_pos = owner_entity.global_position
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# Emit signal - let the weapon/owner handle damage routing to server
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hit_landed.emit(target, damage, knockback, attacker_pos)
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## Activate hitbox (call when attack starts)
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func activate():
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is_active = true
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_hits_this_attack.clear()
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## Deactivate hitbox (call when attack ends)
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func deactivate():
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is_active = false
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_hits_this_attack.clear()
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## Set damage stats (usually from weapon data)
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func set_stats(new_damage: float, new_knockback: float):
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damage = new_damage
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knockback = new_knockback
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