SUPERSLIMES

objects/enemy/super_slime.gd

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+tool
+extends "res://objects/enemy/enemy.gd"
+
+
+export var left_boundary: float = 0.0
+export var right_boundary: float = 0.0
+export var direction: float = 1.0
+export var speed: float = 50.0
+export var jump_distance: float = 0.0
+export var jump_speed: float = 50.0
+
+var _jumping: bool = false
+var _jump_direction: float = -1.0
+
+onready var hitbox: Area2D = $Hitbox
+onready var sprite: AnimatedSprite = $Hitbox/Sprite
+onready var detect_player_cast: RayCast2D = $"%DetectPlayerCast"
+
+
+func _ready() -> void:
+	if Engine.editor_hint:
+		return
+	left_boundary *= 8.0
+	right_boundary *= 8.0
+	jump_distance *= 8.0
+	detect_player_cast.cast_to = Vector2(0.0, -jump_distance)
+	speed *= Game.enemy_speed_factor
+
+
+func _physics_process(delta: float) -> void:
+	if Engine.editor_hint:
+		return
+	# check for player and jump
+	if detect_player_cast.is_colliding():
+		_jumping = true
+	# move if not jumping
+	if _jumping:
+		hitbox.position.y += _jump_direction * jump_speed * delta
+		if hitbox.position.y >= 8.0:
+			hitbox.position.y = 0.0
+			_jump_direction = -1.0
+			hitbox.scale.y = 1.0
+			_jumping = false
+		elif hitbox.position.y <= -jump_distance - 8.0:
+			hitbox.position.y = -jump_distance
+			_jump_direction = 1.0
+			hitbox.scale.y = -1.0
+			_jumping = false
+	else:
+		hitbox.position.x += direction * speed * delta
+		if hitbox.position.x >= right_boundary:
+			hitbox.position.x = right_boundary
+			direction = -1.0
+			sprite.flip_h = true
+		elif hitbox.position.x <= -left_boundary:
+			hitbox.position.x = -left_boundary
+			direction = 1.0
+			sprite.flip_h = false
+
+
+func _process(delta: float) -> void:
+	if Engine.editor_hint and Engine.get_frames_drawn() % 10 == 0:
+		update()
+
+
+func _draw() -> void:
+	if Engine.editor_hint:
+		# bottom travel zone
+		draw_line(
+				Vector2(-left_boundary * 8.0, 4.0),
+				Vector2(right_boundary * 8.0 + 8.0, 4.0),
+				Color(0.4, 0.2, 0.6, 0.75), 1.01, false
+		)
+		# top travel zone
+		draw_line(
+				Vector2(-left_boundary * 8.0, -jump_distance * 8.0 - 4.0),
+				Vector2(right_boundary * 8.0 + 8.0, -jump_distance * 8.0 - 4.0),
+				Color(0.4, 0.2, 0.6, 0.75), 1.01, false
+		)
+		# jump line
+		draw_line(
+				Vector2(4.0, 4.0),
+				Vector2(4.0, -jump_distance * 8.0 - 4.0),
+				Color(0.4, 0.2, 0.6, 0.75), 1.01, false
+		)

objects/enemy/super_slime.tscn

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+[gd_scene load_steps=10 format=2]
+
+[ext_resource path="res://objects/enemy/super_slime.gd" type="Script" id=1]
+[ext_resource path="res://shaders/recolor_border.shader" type="Shader" id=2]
+[ext_resource path="res://graphics/enemy/pal_slime_purple.png" type="Texture" id=3]
+[ext_resource path="res://graphics/enemy/slime.png" type="Texture" id=4]
+
+[sub_resource type="ShaderMaterial" id=4]
+shader = ExtResource( 2 )
+shader_param/border_color = Color( 0, 0, 0, 1 )
+shader_param/border_corners = false
+shader_param/palette = ExtResource( 3 )
+
+[sub_resource type="AtlasTexture" id=2]
+atlas = ExtResource( 4 )
+region = Rect2( 0, 0, 13, 13 )
+
+[sub_resource type="AtlasTexture" id=3]
+atlas = ExtResource( 4 )
+region = Rect2( 13, 0, 13, 13 )
+
+[sub_resource type="SpriteFrames" id=5]
+animations = [ {
+"frames": [ SubResource( 2 ), SubResource( 3 ) ],
+"loop": true,
+"name": "default",
+"speed": 7.0
+} ]
+
+[sub_resource type="RectangleShape2D" id=6]
+extents = Vector2( 4, 4 )
+
+[node name="SuperSlime" type="Node2D"]
+script = ExtResource( 1 )
+blood = false
+jump_speed = 100.0
+
+[node name="Hitbox" type="Area2D" parent="."]
+
+[node name="Sprite" type="AnimatedSprite" parent="Hitbox"]
+material = SubResource( 4 )
+position = Vector2( 4, 3 )
+frames = SubResource( 5 )
+playing = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Hitbox"]
+position = Vector2( 4, 4 )
+shape = SubResource( 6 )
+
+[node name="DetectPlayerCast" type="RayCast2D" parent="Hitbox"]
+unique_name_in_owner = true
+position = Vector2( 4, 0 )
+enabled = true
+cast_to = Vector2( 0, -16 )
+collision_mask = 128
+
+[connection signal="area_entered" from="Hitbox" to="." method="_on_Hitbox_area_entered"]