From 632d927938f128aab918a432bd5d84f8fe65ddd3 Mon Sep 17 00:00:00 2001
From: Felipe M <me@fmartingr.com>
Date: Tue, 18 May 2021 20:43:07 +0200
Subject: [PATCH] Missiles limit & UI

---
 metroidvania/Scenes/Player/Player.gd      |  3 ++-
 metroidvania/Scenes/Player/PlayerStats.gd |  7 ++++++
 metroidvania/Scenes/UI/MissilesUI.gd      | 11 +++++++++
 metroidvania/Scenes/UI/MissilesUI.tscn    | 27 +++++++++++++++++++++++
 metroidvania/Scenes/UI/UI.tscn            |  9 +++++++-
 5 files changed, 55 insertions(+), 2 deletions(-)
 create mode 100644 metroidvania/Scenes/UI/MissilesUI.gd
 create mode 100644 metroidvania/Scenes/UI/MissilesUI.tscn

diff --git a/metroidvania/Scenes/Player/Player.gd b/metroidvania/Scenes/Player/Player.gd
index 2fca441..27437a0 100644
--- a/metroidvania/Scenes/Player/Player.gd
+++ b/metroidvania/Scenes/Player/Player.gd
@@ -82,7 +82,7 @@ func _physics_process(delta):
 	if Input.is_action_pressed("fire") and fireBulletTimer.time_left == 0:
 		fire_bullet()
 		
-	if Input.is_action_pressed("fire_missile") and fireBulletTimer.time_left == 0:
+	if Input.is_action_pressed("fire_missile") and fireBulletTimer.time_left == 0 and PlayerStats.missiles > 0:
 		fire_missile()
 
 func fire_bullet():
@@ -99,6 +99,7 @@ func fire_missile():
 	motion -= missile.velocity * 0.25
 	missile.rotation = missile.velocity.angle()
 	fireBulletTimer.start()
+	PlayerStats.missiles -= 1
 
 func create_dust_effect():
 	var dust_position = global_position
diff --git a/metroidvania/Scenes/Player/PlayerStats.gd b/metroidvania/Scenes/Player/PlayerStats.gd
index 9c06cf3..8f2a324 100644
--- a/metroidvania/Scenes/Player/PlayerStats.gd
+++ b/metroidvania/Scenes/Player/PlayerStats.gd
@@ -3,8 +3,11 @@ class_name PlayerStats
 
 var max_health = 4
 var health = max_health setget set_health
+var max_missiles = 3
+var missiles = max_missiles setget set_missiles
 
 signal player_health_changed(value)
+signal player_missiles_changed(value)
 signal player_died
 
 func set_health(value):
@@ -16,3 +19,7 @@ func set_health(value):
 	
 	if health == 0:
 		emit_signal("player_died")
+
+func set_missiles(value):
+	missiles = clamp(value, 0, max_missiles)
+	emit_signal("player_missiles_changed", missiles)
diff --git a/metroidvania/Scenes/UI/MissilesUI.gd b/metroidvania/Scenes/UI/MissilesUI.gd
new file mode 100644
index 0000000..6693cfc
--- /dev/null
+++ b/metroidvania/Scenes/UI/MissilesUI.gd
@@ -0,0 +1,11 @@
+extends HBoxContainer
+
+var PlayerStats = ResourceLoader.PlayerStats
+
+onready var label = $Label
+
+func _ready():
+	PlayerStats.connect("player_missiles_changed", self, "_on_player_missiles_changed")
+	
+func _on_player_missiles_changed(value):
+	label.text = str(value)
diff --git a/metroidvania/Scenes/UI/MissilesUI.tscn b/metroidvania/Scenes/UI/MissilesUI.tscn
new file mode 100644
index 0000000..ec44f5b
--- /dev/null
+++ b/metroidvania/Scenes/UI/MissilesUI.tscn
@@ -0,0 +1,27 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://Assets/UI/PlayerMissileIcon.png" type="Texture" id=1]
+[ext_resource path="res://Scenes/UI/PixelFont.tres" type="DynamicFont" id=2]
+[ext_resource path="res://Scenes/UI/MissilesUI.gd" type="Script" id=3]
+
+[node name="MissilesUI" type="HBoxContainer"]
+margin_right = 33.0
+margin_bottom = 12.0
+script = ExtResource( 3 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="Icon" type="TextureRect" parent="."]
+margin_right = 8.0
+margin_bottom = 12.0
+texture = ExtResource( 1 )
+
+[node name="Label" type="Label" parent="."]
+margin_left = 12.0
+margin_right = 17.0
+margin_bottom = 7.0
+size_flags_horizontal = 2
+size_flags_vertical = 2
+custom_fonts/font = ExtResource( 2 )
+text = "3"
diff --git a/metroidvania/Scenes/UI/UI.tscn b/metroidvania/Scenes/UI/UI.tscn
index 1003e0f..8dc8897 100644
--- a/metroidvania/Scenes/UI/UI.tscn
+++ b/metroidvania/Scenes/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://Scenes/UI/HealthMeter.tscn" type="PackedScene" id=1]
 [ext_resource path="res://Scenes/Menus/PauseMenu.tscn" type="PackedScene" id=2]
+[ext_resource path="res://Scenes/UI/MissilesUI.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="MissilesUI" parent="." instance=ExtResource( 3 )]
+margin_left = 4.0
+margin_top = 19.0
+margin_right = 37.0
+margin_bottom = 31.0