EEEEELLLLLLSSSSS uuuuuuuuuuuuuuuuuuuuuu

objects/enemy/eel.gd

@@ -0,0 +1,55 @@
+extends "res://objects/enemy/enemy.gd"
+
+
+const SEGMENT_LENGTH: float = 4.0
+const BASE_LENGTH: float = 20.0 # combined length of head and tail
+
+
+export var segments: int = 8
+export var speed: float = 32.0
+export var wave_length: float = 8.0
+export var wave_amplitude: float = 4.0
+
+
+onready var sector: Vector2 = Game.get_sector(global_position)
+
+
+onready var hitbox: Area2D = $Hitbox
+onready var first_segment: CollisionShape2D = $"%Segment"
+onready var segment_start: Position2D = $"%SegmentStart"
+
+
+func _ready() -> void:
+	hitbox.remove_child(first_segment)
+	for i in segments:
+		var new_segment = first_segment.duplicate()
+		new_segment.position.x = segment_start.position.x + SEGMENT_LENGTH * float(i)
+		hitbox.add_child(new_segment)
+	$Hitbox/TailShape.position.x = segment_start.position.x + SEGMENT_LENGTH * segments
+	_wave_segments()
+
+func _physics_process(delta: float) -> void:
+	# move
+	global_position.x -= speed * delta * sign(scale.x)
+	# make segments wibble
+	_wave_segments()
+	# check for wrapping
+	var sector_rect = Rect2(sector * Game.resolution, Game.resolution)
+	var total_length = BASE_LENGTH + (SEGMENT_LENGTH * float(segments))
+	var eel_rect = Rect2(global_position + Vector2(-2.0, 4.0), Vector2(total_length, 0.0))
+	if not sector_rect.intersects(eel_rect):
+		global_position.x += (Game.resolution.x + total_length) * sign(scale.x)
+
+func _wave_segments() -> void:
+	for segment in hitbox.get_children():
+		if segment is Node2D:
+			segment.position.y = sin(segment.global_position.x / wave_length) * wave_amplitude
+
+func die() -> void:
+	for segment in hitbox.get_children():
+		if segment is Node2D:
+			var death_particles = DeathParticles.instance()
+			death_particles.global_position = segment.global_position
+			death_particles.emitting = true
+			get_parent().add_child(death_particles)
+	.die()

objects/enemy/eel.tscn

@@ -0,0 +1,77 @@
+[gd_scene load_steps=8 format=2]
+
+[ext_resource path="res://objects/enemy/eel.gd" type="Script" id=1]
+[ext_resource path="res://graphics/enemy/eel_head.png" type="Texture" id=2]
+[ext_resource path="res://graphics/enemy/eel_body.png" type="Texture" id=3]
+[ext_resource path="res://graphics/enemy/eel_tail.png" type="Texture" id=4]
+[ext_resource path="res://graphics/enemy/eel_inner_border.png" type="Texture" id=5]
+
+[sub_resource type="RectangleShape2D" id=3]
+extents = Vector2( 2, 2 )
+
+[sub_resource type="RectangleShape2D" id=2]
+extents = Vector2( 2, 2 )
+
+[node name="Eel" type="Node2D" groups=["enemy"]]
+script = ExtResource( 1 )
+blood = false
+wave_amplitude = 6.0
+
+[node name="Hitbox" type="Area2D" parent="." groups=["enemy_hitbox"]]
+position = Vector2( 0, 4 )
+
+[node name="SegmentStart" type="Position2D" parent="Hitbox"]
+unique_name_in_owner = true
+position = Vector2( 12, 0 )
+__meta__ = {
+"_gizmo_extents_": 5.0
+}
+
+[node name="HeadShape" type="CollisionPolygon2D" parent="Hitbox"]
+position = Vector2( 8, 0 )
+polygon = PoolVector2Array( -7, -2, 2, -2, 2, 2, -7, 2 )
+
+[node name="HeadSprite" type="Sprite" parent="Hitbox/HeadShape"]
+show_behind_parent = true
+position = Vector2( -4, 0 )
+texture = ExtResource( 2 )
+
+[node name="InnerBorder" type="Sprite" parent="Hitbox/HeadShape"]
+position = Vector2( 3, 0 )
+z_index = -1
+texture = ExtResource( 5 )
+
+[node name="TailShape" type="CollisionShape2D" parent="Hitbox"]
+position = Vector2( 16, 0 )
+shape = SubResource( 3 )
+
+[node name="TailSprite" type="Sprite" parent="Hitbox/TailShape"]
+show_behind_parent = true
+position = Vector2( 2, 0 )
+texture = ExtResource( 4 )
+
+[node name="InnerBorder" type="Sprite" parent="Hitbox/TailShape"]
+position = Vector2( -2, 0 )
+z_index = -1
+texture = ExtResource( 5 )
+
+[node name="Segment" type="CollisionShape2D" parent="Hitbox"]
+unique_name_in_owner = true
+position = Vector2( 12, 0 )
+shape = SubResource( 2 )
+
+[node name="SegmentSprite" type="Sprite" parent="Hitbox/Segment"]
+show_behind_parent = true
+texture = ExtResource( 3 )
+
+[node name="InnerBorder" type="Sprite" parent="Hitbox/Segment"]
+position = Vector2( -2, 0 )
+z_index = -1
+texture = ExtResource( 5 )
+
+[node name="InnerBorder2" type="Sprite" parent="Hitbox/Segment"]
+position = Vector2( 3, 0 )
+z_index = -1
+texture = ExtResource( 5 )
+
+[connection signal="area_entered" from="Hitbox" to="." method="_on_Hitbox_area_entered"]