70 lines
2.1 KiB
GDScript3
70 lines
2.1 KiB
GDScript3
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extends "res://scripts/Machine.gd"
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@export var bullet_scene: PackedScene
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@export var bullet_item: Item
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@export var fire_period: float = 0.5
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@export var detection_poll_time: float = 0.5
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var detection_cooldown = 0.0
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var fire_cooldown: float = 0.0
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var current_target: Enemy = null
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func _ready() -> void:
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super()
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detection_cooldown = randf() * detection_poll_time
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func _process(delta: float) -> void:
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# clear target if it's dead or gone
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if current_target != null:
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check_target_status()
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# find a target if we don't have one
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if current_target == null:
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detection_cooldown -= delta
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if detection_cooldown <= 0:
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detection_cooldown += detection_poll_time
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search_for_enemy()
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# fire at the target if we have one
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if current_target != null:
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if fire_cooldown <= 0:
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if fetch_item_from_storage(bullet_item, 1):
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fire_at_target()
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if fire_cooldown > 0:
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fire_cooldown -= delta
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func check_target_status() -> void:
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if current_target.is_queued_for_deletion():
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current_target = null
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func search_for_enemy() -> void:
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var enemies: Array[Node] = get_tree().get_nodes_in_group("Enemy")
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var closest: float = 9999999999
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for enemy in enemies:
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if enemy is Enemy:
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if !enemy.sighted:
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continue
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var distance_sqr = global_position.distance_squared_to(enemy.global_position)
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if distance_sqr <= closest:
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var params: PhysicsRayQueryParameters2D = PhysicsRayQueryParameters2D.new()
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params.collision_mask = 0b11
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params.from = global_position
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params.to = enemy.global_position
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var result: Dictionary = get_world_2d().direct_space_state.intersect_ray(params)
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if result.has("collider"):
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if !result["collider"] is PhysicsBody2D:
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continue
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var body: PhysicsBody2D = result["collider"]
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if body is Enemy:
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current_target = body
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closest = body.global_position.distance_squared_to(global_position)
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func fire_at_target() -> void:
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fire_cooldown += fire_period
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var bullet: RigidBody2D = bullet_scene.instantiate()
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add_child(bullet)
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var angle: float = global_position.angle_to_point(current_target.global_position)
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bullet.rotation = angle
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bullet.apply_impulse(Vector2(1000,0).rotated(angle))
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