initial commit

Spider.gd

@@ -0,0 +1,88 @@
+extends KinematicBody2D
+
+signal enemy_killed
+signal enemy_damaged
+
+var navi : Navigation2D
+onready var sprite : AnimatedSprite = $AnimatedSprite
+onready var aggro_area : Area2D = $AggroArea
+onready var look : RayCast2D = $Look
+onready var collision_shape : CollisionShape2D = $CollisionShape2D
+onready var aggro_collision : CollisionShape2D = $AggroArea/AggroRadius
+onready var attack_area : Area2D = $AttackArea
+onready var stun_timer : Timer = $StunTimer
+
+var target : Player
+var input_vec : Vector2 = Vector2.ZERO
+var player_seen : bool = false
+export var hp : int = 1
+export var attack_speed : float = 2.0
+var since_attack : float = 0
+var stunned : bool = false
+
+func take_damage(damage : int):
+	hp -= damage
+	stun_timer.start()
+	stunned = true
+	if hp <= 0:
+		emit_signal("enemy_killed")
+		queue_free()
+		return
+	emit_signal("enemy_damaged")
+	player_seen = true
+
+func _ready():
+	look.add_exception(collision_shape)
+	look.add_exception(aggro_collision)
+
+func set_nav(nav : Navigation2D):
+	navi = nav
+
+func search_player():
+	if target != null:
+		var enemy_to_player = target.global_position - self.global_position
+		look.cast_to = enemy_to_player
+		if look.is_colliding():
+			var collider = look.get_collider()
+			if collider == target:
+				player_seen = true
+
+func try_attack() -> bool:
+	if target == null:
+		return false
+	if !target.is_alive():
+		return true
+	if attack_area.overlaps_body(target):
+		if target.has_method("take_damage") and since_attack <= 0:
+			target.take_damage(1)
+			since_attack = attack_speed
+		return true
+	return false
+
+func _process(delta):
+	since_attack -= delta
+	if since_attack < 0:
+		since_attack = 0
+	if target == null:
+		return
+	elif navi != null and player_seen:
+		var path : PoolVector2Array = navi.get_simple_path(self.global_position, target.global_position)
+		if path.size() >= 1:
+			input_vec = (path[1] - position).normalized()
+
+func _physics_process(delta):
+	if !player_seen:
+		search_player()
+	elif	 try_attack():
+		return
+	var speed = 90
+	if stunned:
+		speed = 60
+	move_and_slide(input_vec.normalized() * speed, Vector2.UP)
+
+func _on_AggroArea_body_entered(body):
+	if body.has_method("is_player") and body.is_player():
+		target = body
+
+func _on_StunTimer_timeout():
+	stunned = false