69 lines
1.8 KiB
GDScript
69 lines
1.8 KiB
GDScript
extends "res://demos/pursue_vs_seek/Ship.gd"
|
|
"""
|
|
Represents a ship that chases after the player.
|
|
"""
|
|
|
|
|
|
onready var agent: = GSTSteeringAgent.new()
|
|
onready var accel: = GSTTargetAcceleration.new()
|
|
onready var player_agent: GSTSteeringAgent = owner.find_node("Player", true, false).agent
|
|
|
|
export var use_seek: bool = false
|
|
|
|
var _orient_behavior: GSTSteeringBehavior
|
|
var _behavior: GSTSteeringBehavior
|
|
|
|
var _linear_velocity: = Vector2()
|
|
var _angular_velocity: = 0.0
|
|
var _angular_drag: = 1.0
|
|
|
|
|
|
func _ready() -> void:
|
|
_setup()
|
|
|
|
|
|
func _setup() -> void:
|
|
if use_seek:
|
|
_behavior = GSTSeek.new(agent, player_agent)
|
|
else:
|
|
_behavior = GSTPursue.new(agent, player_agent, 2)
|
|
|
|
_orient_behavior = GSTLookWhereYouGo.new(agent)
|
|
_orient_behavior.alignment_tolerance = 0.001
|
|
_orient_behavior.deceleration_radius = PI/2
|
|
|
|
agent.max_angular_acceleration = 2
|
|
agent.max_angular_speed = 5
|
|
agent.max_linear_acceleration = 75
|
|
agent.max_linear_speed = 125
|
|
_update_agent()
|
|
|
|
|
|
func _physics_process(delta: float) -> void:
|
|
accel = _orient_behavior.calculate_steering(accel)
|
|
_angular_velocity += accel.angular
|
|
|
|
if _angular_velocity < 0:
|
|
_angular_velocity += _angular_drag * delta
|
|
elif _angular_velocity > 0:
|
|
_angular_velocity -= _angular_drag * delta
|
|
|
|
rotation = rotation + _angular_velocity * delta
|
|
|
|
accel = _behavior.calculate_steering(accel)
|
|
_linear_velocity += Vector2(accel.linear.x, accel.linear.y) * delta
|
|
_linear_velocity -= _linear_velocity.normalized() * 10 * delta
|
|
_linear_velocity = _linear_velocity.clamped(agent.max_linear_speed)
|
|
_linear_velocity = move_and_slide(_linear_velocity)
|
|
|
|
_update_agent()
|
|
|
|
|
|
func _update_agent() -> void:
|
|
agent.position.x = global_position.x
|
|
agent.position.y = global_position.y
|
|
agent.orientation = rotation
|
|
agent.linear_velocity.x = _linear_velocity.x
|
|
agent.linear_velocity.y = _linear_velocity.y
|
|
agent.angular_velocity = _angular_velocity
|