godot-steering-ai-framework/project/demos/Quickstart/Player.gd

91 lines
2.8 KiB
GDScript3
Raw Normal View History

extends KinematicBody2D
export var speed_max := 650.0
export var acceleration_max := 70.0
export var rotation_speed_max := 240
export var rotation_accel_max := 40
export var bullet: PackedScene
var velocity := Vector2.ZERO
var angular_velocity := 0.0
var direction := Vector2.RIGHT
onready var agent := GSTSteeringAgent.new()
onready var proxy_target := GSTAgentLocation.new()
onready var face := GSTFace.new(agent, proxy_target)
onready var accel := GSTTargetAcceleration.new()
onready var bullets := owner.get_node("Bullets")
func _ready() -> void:
agent.linear_speed_max = speed_max
agent.linear_acceleration_max = acceleration_max
agent.angular_speed_max = deg2rad(rotation_speed_max)
agent.angular_acceleration_max = deg2rad(rotation_accel_max)
agent.bounding_radius = calculate_radius($CollisionPolygon2D.polygon)
update_agent()
var mouse_pos := get_global_mouse_position()
proxy_target.position.x = mouse_pos.x
proxy_target.position.y = mouse_pos.y
face.alignment_tolerance = deg2rad(5)
face.deceleration_radius = deg2rad(45)
func _physics_process(delta: float) -> void:
update_agent()
var movement := get_movement()
direction = GSTUtils.angle_to_vector2(rotation)
velocity += direction * acceleration_max * movement
velocity = velocity.clamped(speed_max)
velocity = velocity.linear_interpolate(Vector2.ZERO, 0.1)
velocity = move_and_slide(velocity)
face.calculate_steering(accel)
angular_velocity += accel.angular
angular_velocity = clamp(angular_velocity, -agent.angular_speed_max, agent.angular_speed_max)
angular_velocity = lerp(angular_velocity, 0, 0.1)
rotation += angular_velocity * delta
func _unhandled_input(event: InputEvent) -> void:
if event is InputEventMouseMotion:
var mouse_pos: Vector2 = event.position
proxy_target.position.x = mouse_pos.x
proxy_target.position.y = mouse_pos.y
elif event is InputEventMouseButton:
if event.button_index == BUTTON_LEFT and event.pressed:
var next_bullet: = bullet.instance()
next_bullet.global_position = global_position - direction * (agent.bounding_radius-5)
next_bullet.player = self
next_bullet.start(-direction)
bullets.add_child(next_bullet)
func get_movement() -> float:
return Input.get_action_strength("sf_down") - Input.get_action_strength("sf_up")
func update_agent() -> void:
agent.position.x = global_position.x
agent.position.y = global_position.y
agent.orientation = rotation
agent.linear_velocity.x = velocity.x
agent.linear_velocity.y = velocity.y
agent.angular_velocity = angular_velocity
func calculate_radius(polygon: PoolVector2Array) -> float:
var furthest_point := Vector2(-INF, -INF)
for p in polygon:
if abs(p.x) > furthest_point.x:
furthest_point.x = p.x
if abs(p.y) > furthest_point.y:
furthest_point.y = p.y
return furthest_point.length()