add limit of 3 for missiles, UI for missiles amount

Player/Player.gd

@@ -74,7 +74,9 @@ func _physics_process(delta):
 	if Input.is_action_pressed("fire_bullet") and fireBulletTimer.time_left == 0:
 		fire_bullet()
 	if Input.is_action_pressed("fire_missile") and fireBulletTimer.time_left == 0:
-		fire_missile()
+		if PlayerStats.missiles > 0:
+			fire_missile()
+			PlayerStats.missiles -= 1
 
 func fire_bullet():
 	var bullet = Utils.instance_on_main(Bullet, firePoint.global_position)

Player/PlayerStats.gd

@@ -2,15 +2,23 @@ extends Resource
 class_name PlayerStats
 
 signal player_health_change(value)
+signal player_missiles_change(value)
 signal player_death
 
 var max_health = 4
 var health = max_health setget set_health
 
+var max_missiles = 3
+var missiles = max_missiles setget set_missiles
+
 func set_health(new_value):
 	if new_value < health:
 		Events.emit_signal("add_screenshake", 0.4, 0.5)
 	health = clamp(new_value, 0, max_health)
 	emit_signal("player_health_change", health)
 	if health == 0:
 		emit_signal("player_death")
+
+func set_missiles(new_value):
+	missiles = clamp(new_value, 0, max_missiles)
+	emit_signal("player_missiles_change", missiles)

UI/MissilesCount.gd

@@ -0,0 +1,12 @@
+extends HBoxContainer
+
+onready var label = $Label
+
+var PlayerStats = ResourceLoader.PlayerStats
+
+func _ready():
+	PlayerStats.connect("player_missiles_change", self, "_on_missiles_change")
+	label.text = str(PlayerStats.max_missiles)
+
+func _on_missiles_change(amount):
+	label.text = str(amount)

UI/MissilesCount.tscn

@@ -0,0 +1,25 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://UI/PlayerMissileIcon.png" type="Texture" id=1]
+[ext_resource path="res://UI/DefaultTheme.tres" type="Theme" id=2]
+[ext_resource path="res://UI/MissilesCount.gd" type="Script" id=3]
+
+[node name="MissilesCount" type="HBoxContainer"]
+margin_right = 25.0
+margin_bottom = 10.0
+theme = ExtResource( 2 )
+custom_constants/separation = 1
+script = ExtResource( 3 )
+
+[node name="Icon" type="TextureRect" parent="."]
+margin_right = 8.0
+margin_bottom = 10.0
+texture = ExtResource( 1 )
+
+[node name="Label" type="Label" parent="."]
+margin_left = 9.0
+margin_right = 14.0
+margin_bottom = 10.0
+size_flags_vertical = 1
+text = "2"
+valign = 1

UI/UI.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=3 format=2]
+[gd_scene load_steps=4 format=2]
 
 [ext_resource path="res://UI/HealthMeter.tscn" type="PackedScene" id=1]
 [ext_resource path="res://Menus/PauseMenu.tscn" type="PackedScene" id=2]
+[ext_resource path="res://UI/MissilesCount.tscn" type="PackedScene" id=3]
 
 [node name="UI" type="CanvasLayer"]
 
@@ -13,3 +14,9 @@ margin_bottom = 16.0
 
 [node name="PauseMenu" parent="." instance=ExtResource( 2 )]
 visible = false
+
+[node name="MissilesCount" parent="." instance=ExtResource( 3 )]
+margin_left = 5.0
+margin_top = 20.0
+margin_right = 30.0
+margin_bottom = 30.0