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extends RigidBody2D
var alive = true
var asleep = false
var health = 15
var COOLDOWN = 1
var hovering
export var MAX_SPEED = 50
export var MAX_THRUST = 25
func _integrate_forces(state):
if not alive:
return
if asleep:
return
var delta = state.get_step()
# Check nearby objects with raycast
var closest_collision = null
$rays.rotation += delta * 11 * PI
for ray in $rays.get_children():
if ray.is_colliding():
var collision_point = ray.get_collision_point() - global_position
if closest_collision == null:
closest_collision = collision_point
if collision_point.length() < closest_collision.length():
closest_collision = collision_point
# Dodge
if closest_collision:
var normal = -closest_collision.normalized()
var dodge_direction = 1
if randf() < 0.5:
dodge_direction = -1
linear_velocity += normal * MAX_THRUST * 2 * delta
linear_velocity += normal.rotated(PI / 2 * dodge_direction) * MAX_THRUST * delta
# Steer towards player
var distance_to_player = global_position.distance_to($"../../Ship".global_position)
var vector_to_player = ($"../../Ship".global_position - global_position).normalized()
# Rotate turret
var start = $turret.rotation
var angle_to_target = Vector2(1, 0).rotated(start).angle_to(vector_to_player)
var end = start + angle_to_target
$Tween.interpolate_property(
$turret, "rotation", start, end, 0.1, Tween.TRANS_QUAD, Tween.EASE_OUT
)
$Tween.start()
if distance_to_player > 40:
# Move towards player
linear_velocity += vector_to_player * MAX_THRUST * delta
hovering = false
else:
# Move away from player
hovering = false
linear_velocity += -vector_to_player * MAX_THRUST * delta
# Clamp max speed
if linear_velocity.length() > MAX_SPEED:
linear_velocity = linear_velocity.normalized() * MAX_SPEED
func shoot():
$shootCooldown.wait_time = COOLDOWN * (1 + rand_range(-0.25, 0.25))
$shootCooldown.start()
if not alive:
return
if asleep:
return
# Start firing animation
$AnimationPlayer.play("firing")
const Laser = preload("res://bullets/scenes/EnemyLaser.tscn")
func spawn_bullet():
var laser = Game.instance_scene_on_main(Laser, global_position)
laser.apply_impulse(Vector2.ZERO, Vector2(-50, 0))
const ExplosionEffect = preload("res://effects/ExplosionEffect.tscn")
const HitEffect = preload("res://effects/HitEffect.tscn")
func create_hit_effect():
Game.instance_scene_on_main(HitEffect, global_position)
func create_explosion():
Game.instance_scene_on_main(ExplosionEffect, global_position)
func _exit_tree():
create_explosion()
func _on_Drone_body_entered(body):
if body.is_in_group("pbullet"):
health -= 1
if health <= 0:
queue_free()
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