111 lines
3.6 KiB
GDScript
111 lines
3.6 KiB
GDScript
extends EnemyBase
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# ---------------------------------------------------------------------------
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# ANCHOR — Structural integrity corruption
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# Drifts to a random floor point, anchors for a random duration while firing
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# homing projectiles, then picks a new point. Invincible while drifting.
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# ---------------------------------------------------------------------------
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const ENEMY_PROJECTILE = preload("res://scenes/enemies/enemy_projectile.tscn")
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enum State { DRIFTING, ANCHORED }
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# Room interior half-extents (960×540 room, 32px walls, 16px gap buffer)
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const INNER_HALF_X := 432.0
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const INNER_HALF_Y := 222.0
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# Margin from walls so it stays on the floor interior
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const FLOOR_MARGIN := 80.0
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const SHOT_COOLDOWN := 2.2
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const ANCHOR_TIME_MIN := 3.0
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const ANCHOR_TIME_MAX := 6.0
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var _state: State = State.DRIFTING
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var _target_pos: Vector2
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var _shot_timer: float = 1.0
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var _anchor_timer: float = 0.0
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func _ready() -> void:
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max_health = 30.0
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current_health = 30.0
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speed = 95.0
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contact_damage = 0.5
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super._ready()
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_pick_floor_point()
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# ---------------------------------------------------------------------------
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# Pick a random point within the room interior
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# ---------------------------------------------------------------------------
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func _pick_floor_point() -> void:
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var room_center: Vector2 = (get_parent() as Node2D).global_position
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var rx: float = randf_range(-INNER_HALF_X + FLOOR_MARGIN, INNER_HALF_X - FLOOR_MARGIN)
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var ry: float = randf_range(-INNER_HALF_Y + FLOOR_MARGIN, INNER_HALF_Y - FLOOR_MARGIN)
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_target_pos = room_center + Vector2(rx, ry)
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func _physics_process(delta: float) -> void:
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_tick_spawn_delay(delta)
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_find_player()
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_tick_contact(delta)
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_tick_flash(delta)
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_tick_slow(delta)
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if not is_active():
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return
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match _state:
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State.DRIFTING:
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_do_seek()
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State.ANCHORED:
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_do_anchored(delta)
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velocity *= _slow_factor
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move_and_slide()
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# ---------------------------------------------------------------------------
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# Invincible while drifting
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# ---------------------------------------------------------------------------
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func take_damage(amount: float) -> void:
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if _state == State.DRIFTING:
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return
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super.take_damage(amount)
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# ---------------------------------------------------------------------------
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# Drift toward target floor point, then anchor
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# ---------------------------------------------------------------------------
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func _do_seek() -> void:
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var diff := _target_pos - global_position
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if diff.length() < 12.0:
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velocity = Vector2.ZERO
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_state = State.ANCHORED
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_shot_timer = SHOT_COOLDOWN * 0.5
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_anchor_timer = randf_range(ANCHOR_TIME_MIN, ANCHOR_TIME_MAX)
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else:
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velocity = diff.normalized() * speed
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# ---------------------------------------------------------------------------
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# Anchored — fire homing projectiles; leave when anchor_timer expires
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# ---------------------------------------------------------------------------
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func _do_anchored(delta: float) -> void:
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velocity = Vector2.ZERO
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_anchor_timer -= delta
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if _anchor_timer <= 0.0:
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_state = State.DRIFTING
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_pick_floor_point()
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return
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_shot_timer -= delta
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if _shot_timer <= 0.0 and _player != null:
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_fire_at_player()
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_shot_timer = SHOT_COOLDOWN
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func _fire_at_player() -> void:
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var dir := (_player.global_position - global_position).normalized()
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var proj = ENEMY_PROJECTILE.instantiate()
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proj.position = (get_parent() as Node2D).to_local(global_position)
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proj.direction = dir
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proj.speed = 120.0
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proj.damage = 1.0
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proj.max_range = 720.0
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proj.homing = true
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proj.homing_target = _player
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get_parent().call_deferred("add_child", proj) |