mirror of
https://github.com/Relintai/godot-steering-ai-framework.git
synced 2024-11-14 04:57:19 +01:00
6e6f27505c
The use of `not is_inside_tree()` before setting the setting class' value meant that the starting values would always be the default. Moving the value setting before checking for tree readiness fixes the issue.
71 lines
2.0 KiB
GDScript
71 lines
2.0 KiB
GDScript
extends KinematicBody2D
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# Represents a ship that chases after the player.
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onready var agent := GSTSteeringAgent.new()
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onready var accel := GSTTargetAcceleration.new()
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onready var player_agent: GSTSteeringAgent = owner.find_node("Player", true, false).agent
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export var use_seek: bool = false
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var _orient_behavior: GSTSteeringBehavior
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var _behavior: GSTSteeringBehavior
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var _linear_velocity := Vector2()
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var _linear_drag_coefficient := 0.025
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var _angular_velocity := 0.0
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var _angular_drag := 0.1
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func _ready() -> void:
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set_physics_process(false)
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func _physics_process(delta: float) -> void:
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_update_agent()
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accel = _orient_behavior.calculate_steering(accel)
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_angular_velocity += accel.angular
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_angular_velocity = clamp(
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lerp(_angular_velocity, 0, _angular_drag),
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-agent.max_angular_speed,
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agent.max_angular_speed
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)
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rotation += _angular_velocity * delta
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accel = _behavior.calculate_steering(accel)
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_linear_velocity += Vector2(accel.linear.x, accel.linear.y)
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_linear_velocity = _linear_velocity.linear_interpolate(Vector2.ZERO, _linear_drag_coefficient)
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_linear_velocity = _linear_velocity.clamped(agent.max_linear_speed)
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_linear_velocity = move_and_slide(_linear_velocity)
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func setup(predict_time: float, max_linear_speed: float, max_linear_accel: float) -> void:
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if use_seek:
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_behavior = GSTSeek.new(agent, player_agent)
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else:
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_behavior = GSTPursue.new(agent, player_agent, predict_time)
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_orient_behavior = GSTLookWhereYouGo.new(agent)
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_orient_behavior.alignment_tolerance = 0.001
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_orient_behavior.deceleration_radius = PI/2
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agent.max_angular_acceleration = 2
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agent.max_angular_speed = 5
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agent.max_linear_acceleration = max_linear_accel
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agent.max_linear_speed = max_linear_speed
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_update_agent()
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set_physics_process(true)
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func _update_agent() -> void:
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agent.position.x = global_position.x
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agent.position.y = global_position.y
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agent.orientation = rotation
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agent.linear_velocity.x = _linear_velocity.x
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agent.linear_velocity.y = _linear_velocity.y
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agent.angular_velocity = _angular_velocity
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