Added a game manager and better gameplay loop

scripts/resources/characterStats.gd

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+class_name Character extends Resource
+
+@export var maxHealth: int = 100
+@export var startHealth: int = 100
+@export var currentHealth: int = 100

scripts/resources/playerStats.tres

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+[gd_resource type="Resource" script_class="Character" load_steps=2 format=3 uid="uid://dxc7dg75pkbqa"]
+
+[ext_resource type="Script" path="res://scripts/resources/characterStats.gd" id="1_pm5p8"]
+
+[resource]
+script = ExtResource("1_pm5p8")
+maxHealth = 100
+startHealth = 100
+currentHealth = 100

scripts/resources/slimeStats.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="Character" load_steps=2 format=3 uid="uid://udhbmduy86bh"]
+
+[ext_resource type="Script" path="res://scripts/resources/characterStats.gd" id="1_ys1fs"]
+
+[resource]
+script = ExtResource("1_ys1fs")
+maxHealth = 50
+startHealth = 50
+currentHealth = 50