added machinegun turret

objects/environment/turret/turret.gd

@@ -0,0 +1,38 @@
+extends Node2D
+
+const TurretBullet = preload("res://objects/environment/turret/turret_bullet.tscn")
+
+export var delay = 0.0
+export var fire_rate = 10.0
+export var bullet_spread = 15.0
+export var bullet_speed = 200.0
+
+# do not set manually, controlled by AnimationPlayer
+export var shooting = false
+
+onready var barrel_start = $BarrelStart
+onready var barrel_end = $BarrelStart/BarrelEnd
+
+var bullet_cooldown = 1.0
+
+func _ready():
+	bullet_spread = deg2rad(bullet_spread)
+	$AnimationTree.active = true
+	var timer = get_tree().create_timer(delay, false)
+	timer.connect("timeout", $AnimationTree, "set", [
+		"parameters/conditions/shooting",
+		true
+	])
+
+func _physics_process(delta):
+	if shooting:
+		bullet_cooldown -= delta * fire_rate
+		if bullet_cooldown <= 0.0:
+			bullet_cooldown += 1.0
+			var bullet = TurretBullet.instance()
+			bullet.global_position = barrel_end.global_position
+			bullet.direction = (barrel_end.global_position - barrel_start.global_position).normalized()
+			bullet.direction = bullet.direction.rotated(rand_range(-bullet_spread, bullet_spread))
+			bullet.speed = bullet_speed
+			get_parent().call_deferred("add_child", bullet)
+			Game.play_sound(Game.a_arrow, Game.ac_climb)