generated from krampus/template-godot4
103 lines
2.4 KiB
GDScript
103 lines
2.4 KiB
GDScript
class_name GrunkBeast extends CharacterBody3D
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## Grunk beast controller
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#region Constants
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const STALKING_SOUND_LIMIT := 20.0
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#endregion
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#region Exported Properties
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@export var base_speed := 60.0
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@export var pursuit_speed := 180.0
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@export var debug_destroy: bool:
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set(value):
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queue_free()
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#endregion
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#region Member Variables
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var gravity: Vector3 = (
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ProjectSettings.get_setting("physics/3d/default_gravity")
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* ProjectSettings.get_setting("physics/3d/default_gravity_vector")
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)
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var pathfinding := true
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@onready var nav_agent: NavigationAgent3D = %NavAgent
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@onready var nav_probe: NavigationAgent3D = %NavProbe
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@onready var stalking_timer: Timer = %StalkingTimer
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@onready var blackboard: Blackboard = %Blackboard
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#endregion
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#region Character Controller
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func is_pursuing() -> bool:
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return blackboard.has_value("pursuit_target")
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func is_stalking() -> bool:
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return false # TODO
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func get_speed() -> float:
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if is_pursuing():
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return pursuit_speed
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return base_speed
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func path_shorter_than(target: Vector3, limit: float) -> bool:
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var length := 0.0
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var last_pos := global_position
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nav_probe.target_position = target
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# Fail early if the target is unreachable.
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# NOTE: this call also forces a navigation path refresh! Do not remove!
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if not nav_probe.is_target_reachable():
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return false
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var path := nav_probe.get_current_navigation_path().slice(
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nav_probe.get_current_navigation_path_index()
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)
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if not path:
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# Shouldn't be possible, but if it is it would cause problems if we didn't fail here
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print_debug("Target is reachable but has no path (tell the developer!)")
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return false
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# Integrate along path
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for waypoint: Vector3 in path:
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length += last_pos.distance_to(waypoint)
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if length > limit:
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return false
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last_pos = waypoint
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return true
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func _physics_process(delta: float) -> void:
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var motion := Vector3.ZERO
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if pathfinding and not nav_agent.is_navigation_finished():
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var path_pos := nav_agent.get_next_path_position()
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var relative_pos := path_pos - global_position
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motion = relative_pos.normalized() * get_speed() * delta
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velocity.x = motion.x
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velocity.z = motion.z
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if not is_on_floor():
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velocity += gravity * delta
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move_and_slide()
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func on_sound_detected(source: Vector3) -> void:
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# Check that the source isn't too far away, e.g. a sound from another room
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if path_shorter_than(source, STALKING_SOUND_LIMIT):
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blackboard.set_value("stalking_target", source)
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stalking_timer.start()
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#endregion
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