From 0f5e075a54b55ead261f9958b050fb1865e54851 Mon Sep 17 00:00:00 2001
From: Felipe M <me@fmartingr.com>
Date: Thu, 4 Feb 2021 20:04:56 +0100
Subject: [PATCH] Health meter

---
 metroidvania/Scenes/Player/PlayerStats.gd |  2 ++
 metroidvania/Scenes/UI/HealthMeter.gd     | 12 ++++++++++
 metroidvania/Scenes/UI/HealthMeter.tscn   | 27 +++++++++++++++++++++++
 metroidvania/Scenes/UI/UI.tscn            | 16 +++++---------
 4 files changed, 47 insertions(+), 10 deletions(-)
 create mode 100644 metroidvania/Scenes/UI/HealthMeter.gd
 create mode 100644 metroidvania/Scenes/UI/HealthMeter.tscn

diff --git a/metroidvania/Scenes/Player/PlayerStats.gd b/metroidvania/Scenes/Player/PlayerStats.gd
index b9f0417..9c06cf3 100644
--- a/metroidvania/Scenes/Player/PlayerStats.gd
+++ b/metroidvania/Scenes/Player/PlayerStats.gd
@@ -4,6 +4,7 @@ class_name PlayerStats
 var max_health = 4
 var health = max_health setget set_health
 
+signal player_health_changed(value)
 signal player_died
 
 func set_health(value):
@@ -11,6 +12,7 @@ func set_health(value):
 		Events.emit_signal("add_screenshake", 0.5, 0.5)
 	
 	health = clamp(value, 0, max_health)
+	emit_signal("player_health_changed", health)
 	
 	if health == 0:
 		emit_signal("player_died")
diff --git a/metroidvania/Scenes/UI/HealthMeter.gd b/metroidvania/Scenes/UI/HealthMeter.gd
new file mode 100644
index 0000000..d07d31f
--- /dev/null
+++ b/metroidvania/Scenes/UI/HealthMeter.gd
@@ -0,0 +1,12 @@
+extends Control
+
+var PlayerStats = ResourceLoader.PlayerStats
+
+onready var full = $Full
+
+func _ready():
+	PlayerStats.connect("player_health_changed", self, "_on_player_health_changed")
+
+
+func _on_player_health_changed(value):
+	full.rect_size.x = value * 5 + 1
diff --git a/metroidvania/Scenes/UI/HealthMeter.tscn b/metroidvania/Scenes/UI/HealthMeter.tscn
new file mode 100644
index 0000000..0bf5d7c
--- /dev/null
+++ b/metroidvania/Scenes/UI/HealthMeter.tscn
@@ -0,0 +1,27 @@
+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://Assets/UI/HealthMeterEmpty.png" type="Texture" id=1]
+[ext_resource path="res://Assets/UI/HealthMeter.png" type="Texture" id=2]
+[ext_resource path="res://Scenes/UI/HealthMeter.gd" type="Script" id=3]
+
+[node name="HealthMeter" type="Control"]
+margin_right = 21.0
+margin_bottom = 12.0
+script = ExtResource( 3 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="Empty" type="TextureRect" parent="."]
+margin_right = 21.0
+margin_bottom = 12.0
+texture = ExtResource( 1 )
+expand = true
+stretch_mode = 2
+
+[node name="Full" type="TextureRect" parent="."]
+margin_right = 21.0
+margin_bottom = 12.0
+texture = ExtResource( 2 )
+expand = true
+stretch_mode = 2
diff --git a/metroidvania/Scenes/UI/UI.tscn b/metroidvania/Scenes/UI/UI.tscn
index f1c2650..0f8c064 100644
--- a/metroidvania/Scenes/UI/UI.tscn
+++ b/metroidvania/Scenes/UI/UI.tscn
@@ -1,15 +1,11 @@
 [gd_scene load_steps=2 format=2]
 
-[ext_resource path="res://Assets/UI/HealthMeterEmpty.png" type="Texture" id=1]
+[ext_resource path="res://Scenes/UI/HealthMeter.tscn" type="PackedScene" id=1]
 
 [node name="UI" type="CanvasLayer"]
 
-[node name="TextureRect" type="TextureRect" parent="."]
-margin_left = 32.0
-margin_top = 24.0
-margin_right = 72.0
-margin_bottom = 64.0
-texture = ExtResource( 1 )
-__meta__ = {
-"_edit_use_anchors_": false
-}
+[node name="HealthMeter" parent="." instance=ExtResource( 1 )]
+margin_left = 4.0
+margin_top = 4.0
+margin_right = 25.0
+margin_bottom = 16.0