New features and plenty of code still in testing. This includes a level select, basic inventory, and a basic HUD.

Player/Inventory.gd

@@ -0,0 +1,45 @@
+extends Node
+
+signal update_currency(amount)
+
+var __currency: int
+
+var __weapons: Array
+var __accessories: Array
+var __categories: Dictionary
+
+
+func _ready() -> void:
+    self.__currency = 100
+
+    self.__weapons = []
+    self.__accessories = []
+    self.__categories = {
+        'Weapon': self.__weapons,
+        'Accessory': self.__accessories}
+    return
+
+
+func get_currency() -> int:
+    return self.__currency
+
+
+func add_currency(amount: int) -> void:
+    self.__currency += amount
+    emit_signal('update_currency', self.__currency)
+    return
+
+
+func add(item) -> void:
+    self.__categories[item.type].append(item)
+    return
+
+
+func discard(item) -> void:
+    var index: int = 0
+    for itr in self.__categories[item.type]:
+        if itr.equals(item):
+            self.__categories[item.type].remove(index)
+            break
+        index += 1
+    return

Player/Inventory.tscn

@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://Player/Inventory.gd" type="Script" id=1]
+
+[node name="Inventory" type="Node"]
+script = ExtResource( 1 )

Player/Player.gd

@@ -0,0 +1,59 @@
+extends KinematicBody2D
+
+const ACCELERATION: int = 1000
+const MAX_SPEED: int = 120
+const FRICTION: int = 1000
+const HEALTH_SLICES: Array = [0, 20, 35, 50, 65, 80, 100]
+
+var health_index: int = 6
+var hud: CanvasLayer = null
+var velocity: Vector2 = Vector2.ZERO
+
+
+func _physics_process(delta) -> void:
+    var input_vector: Vector2 = Vector2.ZERO
+
+    input_vector.x = Input.get_action_strength('player_right') \
+        - Input.get_action_strength('player_left')
+    input_vector.y = Input.get_action_strength('player_down') \
+        - Input.get_action_strength('player_up')
+    input_vector = input_vector.normalized()
+
+    if input_vector != Vector2.ZERO:
+        $AnimationTree.set('parameters/Idle/blend_position', input_vector)
+        velocity = velocity.move_toward(input_vector * MAX_SPEED, ACCELERATION * delta)
+    else:
+        velocity = velocity.move_toward(Vector2.ZERO, FRICTION * delta)
+
+    velocity = move_and_slide(velocity)
+    return
+
+
+func load_hud(node: CanvasLayer) -> void:
+    hud = node
+    if hud.connect('add_currency', self, 'add_currency') != OK:
+        print('ERROR: HUD "add_currency" signal already connected.')
+
+    hud.update_health(HEALTH_SLICES[health_index])
+    hud.update_currency($Inventory.get_currency())
+    return
+
+
+func add_currency(amount: int) -> void:
+    $Inventory.add_currency(amount)
+    return
+
+
+func _on_Inventory_update_currency(amount: int) -> void:
+    hud.update_currency(amount)
+    return
+
+
+func _on_Hitbox_body_entered(body: Node) -> void:
+    if not 'enemies' in body.get_groups():
+        return
+
+    if health_index != 0:
+        health_index -= 1
+        hud.update_health(HEALTH_SLICES[health_index])
+    return

Player/Player.png.import

@@ -0,0 +1,35 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/Player.png-3d0801c65bdfc563657cfa304115f1c7.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://Player/Player.png"
+dest_files=[ "res://.import/Player.png-3d0801c65bdfc563657cfa304115f1c7.stex" ]
+
+[params]
+
+compress/mode=3
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=2
+flags/repeat=0
+flags/filter=false
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=0
+process/fix_alpha_border=false
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
+stream=false
+size_limit=0
+detect_3d=false
+svg/scale=1.0

Player/Player.tscn

@@ -0,0 +1,220 @@
+[gd_scene load_steps=20 format=2]
+
+[ext_resource path="res://Player/Player.gd" type="Script" id=1]
+[ext_resource path="res://Player/Player.png" type="Texture" id=2]
+[ext_resource path="res://Player/Player_Down.png" type="Texture" id=3]
+[ext_resource path="res://Player/Player_Up.png" type="Texture" id=4]
+[ext_resource path="res://Player/Inventory.tscn" type="PackedScene" id=5]
+
+[sub_resource type="SpriteFrames" id=1]
+animations = [ {
+"frames": [ ExtResource( 4 ) ],
+"loop": false,
+"name": "look_up",
+"speed": 5.0
+}, {
+"frames": [ ExtResource( 2 ) ],
+"loop": false,
+"name": "look_left",
+"speed": 5.0
+}, {
+"frames": [ ExtResource( 2 ) ],
+"loop": false,
+"name": "look_right",
+"speed": 5.0
+}, {
+"frames": [ ExtResource( 3 ) ],
+"loop": false,
+"name": "look_down",
+"speed": 5.0
+} ]
+
+[sub_resource type="CapsuleShape2D" id=2]
+radius = 3.0
+height = 5.0
+
+[sub_resource type="CapsuleShape2D" id=3]
+radius = 5.5
+height = 3.75
+
+[sub_resource type="Animation" id=4]
+resource_name = "Look Down"
+length = 0.001
+tracks/0/type = "value"
+tracks/0/path = NodePath("Sprite:animation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ "look_down" ]
+}
+tracks/1/type = "value"
+tracks/1/path = NodePath("Sprite:flip_h")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ false ]
+}
+
+[sub_resource type="Animation" id=5]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/path = NodePath("Sprite:animation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ "look_right" ]
+}
+tracks/1/type = "value"
+tracks/1/path = NodePath("Sprite:flip_h")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ true ]
+}
+
+[sub_resource type="Animation" id=6]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/path = NodePath("Sprite:animation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ "look_right" ]
+}
+tracks/1/type = "value"
+tracks/1/path = NodePath("Sprite:flip_h")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ false ]
+}
+
+[sub_resource type="Animation" id=7]
+resource_name = "Look Up"
+length = 0.001
+tracks/0/type = "value"
+tracks/0/path = NodePath("Sprite:animation")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ "look_up" ]
+}
+tracks/1/type = "value"
+tracks/1/path = NodePath("Sprite:flip_h")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ false ]
+}
+
+[sub_resource type="AnimationNodeAnimation" id=8]
+animation = "Look Left"
+
+[sub_resource type="AnimationNodeAnimation" id=9]
+animation = "Look Down"
+
+[sub_resource type="AnimationNodeAnimation" id=10]
+animation = "Look Right"
+
+[sub_resource type="AnimationNodeAnimation" id=11]
+animation = "Look Up"
+
+[sub_resource type="AnimationNodeBlendSpace2D" id=12]
+blend_point_0/node = SubResource( 8 )
+blend_point_0/pos = Vector2( -1.01, 0 )
+blend_point_1/node = SubResource( 9 )
+blend_point_1/pos = Vector2( 0, 1.1 )
+blend_point_2/node = SubResource( 10 )
+blend_point_2/pos = Vector2( 1, 0 )
+blend_point_3/node = SubResource( 11 )
+blend_point_3/pos = Vector2( 0, -1.1 )
+min_space = Vector2( -1.01, -1.1 )
+max_space = Vector2( 1, 1.1 )
+blend_mode = 1
+
+[sub_resource type="AnimationNodeStateMachine" id=13]
+states/Idle/node = SubResource( 12 )
+states/Idle/position = Vector2( -2901.63, -177 )
+start_node = "Idle"
+graph_offset = Vector2( -3591.37, -302.6 )
+
+[sub_resource type="AnimationNodeStateMachinePlayback" id=14]
+
+[node name="Player" type="KinematicBody2D"]
+script = ExtResource( 1 )
+
+[node name="Sprite" type="AnimatedSprite" parent="."]
+position = Vector2( 0, -5 )
+frames = SubResource( 1 )
+animation = "look_right"
+
+[node name="Collision" type="CollisionShape2D" parent="."]
+visible = false
+rotation = 1.5708
+shape = SubResource( 2 )
+
+[node name="Hitbox" type="Area2D" parent="."]
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Hitbox"]
+visible = false
+position = Vector2( 0, -5 )
+shape = SubResource( 3 )
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+autoplay = "Look Right"
+"anims/Look Down" = SubResource( 4 )
+"anims/Look Left" = SubResource( 5 )
+"anims/Look Right" = SubResource( 6 )
+"anims/Look Up" = SubResource( 7 )
+
+[node name="AnimationTree" type="AnimationTree" parent="."]
+tree_root = SubResource( 13 )
+anim_player = NodePath("../AnimationPlayer")
+active = true
+parameters/playback = SubResource( 14 )
+parameters/Idle/blend_position = Vector2( 0.993787, 0.0189655 )
+
+[node name="Inventory" parent="." instance=ExtResource( 5 )]
+
+[connection signal="body_entered" from="Hitbox" to="." method="_on_Hitbox_body_entered"]
+[connection signal="update_currency" from="Inventory" to="." method="_on_Inventory_update_currency"]

Player/Player_Down.png.import

@@ -0,0 +1,35 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/Player_Down.png-0720a85ec5e36101f691c750d323946c.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://Player/Player_Down.png"
+dest_files=[ "res://.import/Player_Down.png-0720a85ec5e36101f691c750d323946c.stex" ]
+
+[params]
+
+compress/mode=3
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=2
+flags/repeat=0
+flags/filter=false
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=0
+process/fix_alpha_border=false
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
+stream=false
+size_limit=0
+detect_3d=false
+svg/scale=1.0

Player/Player_Up.png.import

@@ -0,0 +1,35 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/Player_Up.png-889a827868f4dc454da2bef028bdec76.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://Player/Player_Up.png"
+dest_files=[ "res://.import/Player_Up.png-889a827868f4dc454da2bef028bdec76.stex" ]
+
+[params]
+
+compress/mode=3
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=2
+flags/repeat=0
+flags/filter=false
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=0
+process/fix_alpha_border=false
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+process/normal_map_invert_y=false
+stream=false
+size_limit=0
+detect_3d=false
+svg/scale=1.0