add health regen meta upgrade

project/resources/meta_upgrades/health_regen.tres

@@ -0,0 +1,11 @@
+[gd_resource type="Resource" script_class="MetaUpgrade" load_steps=2 format=3 uid="uid://c6mexu74lkdgj"]
+
+[ext_resource type="Script" path="res://resources/meta_upgrades/meta_upgrade.gd" id="1_ctlrh"]
+
+[resource]
+script = ExtResource("1_ctlrh")
+id = "health_regen"
+max_quantity = 3
+experience_cost = 50
+title = "Health Regen"
+description = "Regenerate health slowly over time."

project/scenes/component/health_component.gd

@@ -2,7 +2,8 @@ extends Node
 class_name HealthComponent
 
 signal died
-signal health_changed
+signal health_decreased
+signal health_increased
 
 @export var max_health: float = 10
 var current_health
@@ -14,10 +15,15 @@ func _ready():
 
 func damage(damage_amount: float):
 	current_health = max(current_health - damage_amount, 0)
-	health_changed.emit()
+	health_decreased.emit()
 	Callable(check_death).call_deferred()
 
 
+func heal(heal_amount: int):
+	current_health = min(current_health + heal_amount, max_health)
+	health_increased.emit()
+
+
 func get_health_percent():
 	if max_health <= 0:
 		return 0

project/scenes/component/hit_flash_component.gd

@@ -6,10 +6,10 @@ extends Node
 var hit_flash_tween: Tween
 
 func _ready():
-	health_component.health_changed.connect(on_health_changed)
+	health_component.health_decreased.connect(on_health_decreased)
 	sprite.material = hit_flash_material
 
-func on_health_changed():
+func on_health_decreased():
 	if hit_flash_tween != null && hit_flash_tween.is_valid():
 		hit_flash_tween.kill()
 

project/scenes/game_object/player/heal.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://8md3idjg3as2"
+path="res://.godot/imported/heal.png-753d09a93bcdb9c24c182230816e1d9c.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://scenes/game_object/player/heal.png"
+dest_files=["res://.godot/imported/heal.png-753d09a93bcdb9c24c182230816e1d9c.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

project/scenes/game_object/player/player.gd

@@ -1,5 +1,8 @@
 extends CharacterBody2D
 
+@export var arena_time_manager: Node
+
+@onready var heal_animation = $HealAnimation
 @onready var health_bar = $HealthBar
 @onready var damage_interval_timer = $DamageIntervalTimer
 @onready var health_component = $HealthComponent
@@ -14,6 +17,8 @@ var base_speed = 0
 var last_received_damage = 0
 
 func _ready():
+	heal_animation.hide()
+	arena_time_manager.arena_difficulty_increased.connect(on_arena_difficulty_increased)
 	base_speed = velocity_component.max_speed
 	GameEvents.ability_upgrade_added.connect(on_ability_upgrade_added)
 	sprite_2d.texture = load(character["sprite_path"])
@@ -68,7 +73,7 @@ func _on_damage_interval_timer_timeout():
 	check_deal_damage(last_received_damage)
 
 
-func _on_health_component_health_changed():
+func _on_health_component_health_decreased():
 	GameEvents.emit_player_damage()
 	update_health_display()
 	$HitRandomStreamPlayer.play_random()
@@ -89,3 +94,20 @@ func _on_collision_area_2d_area_entered(area):
 
 func _on_collision_area_2d_area_exited(_area):
 	number_colliding_bodies -= 1
+
+
+func on_arena_difficulty_increased(difficulty: int):
+	var health_regeneration_quantity = MetaProgression.get_upgrade_count("health_regen")
+	if health_regeneration_quantity > 0:
+		var is_thirty_second_interval = (difficulty % 6) == 0
+		if is_thirty_second_interval:
+			health_component.heal(health_regeneration_quantity)
+
+
+func _on_health_component_health_increased():
+	update_health_display()
+	heal_animation.show()
+	heal_animation.play("default")
+	await heal_animation.animation_finished
+	heal_animation.stop()
+	heal_animation.hide()

project/scenes/game_object/player/player.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=23 format=3 uid="uid://cq3ir5u82bhyk"]
+[gd_scene load_steps=29 format=3 uid="uid://cq3ir5u82bhyk"]
 
 [ext_resource type="Script" path="res://scenes/game_object/player/player.gd" id="1_0aune"]
 [ext_resource type="Texture2D" uid="uid://dk7lp3sks48a" path="res://scenes/game_object/player/richard.png" id="1_gn467"]
@@ -13,6 +13,7 @@
 [ext_resource type="AudioStream" uid="uid://chob64pqkly3n" path="res://assets/audio/impactMining_002.ogg" id="5_76qe6"]
 [ext_resource type="AudioStream" uid="uid://cnsprl3nnqhwb" path="res://assets/audio/impactMining_003.ogg" id="6_b8lvt"]
 [ext_resource type="AudioStream" uid="uid://hxu1rrowfiyv" path="res://assets/audio/impactMining_004.ogg" id="7_a8v34"]
+[ext_resource type="Texture2D" uid="uid://8md3idjg3as2" path="res://scenes/game_object/player/heal.png" id="14_ojkwk"]
 
 [sub_resource type="Animation" id="Animation_dv3m0"]
 length = 0.001
@@ -99,6 +100,42 @@ _data = {
 "walk": SubResource("Animation_yff7g")
 }
 
+[sub_resource type="AtlasTexture" id="AtlasTexture_ct71q"]
+atlas = ExtResource("14_ojkwk")
+region = Rect2(0, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_xavto"]
+atlas = ExtResource("14_ojkwk")
+region = Rect2(16, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_qb63k"]
+atlas = ExtResource("14_ojkwk")
+region = Rect2(32, 0, 16, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_d6sje"]
+atlas = ExtResource("14_ojkwk")
+region = Rect2(48, 0, 16, 16)
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_1xxkw"]
+animations = [{
+"frames": [{
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_ct71q")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_xavto")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_qb63k")
+}, {
+"duration": 1.0,
+"texture": SubResource("AtlasTexture_d6sje")
+}],
+"loop": false,
+"name": &"default",
+"speed": 5.0
+}]
+
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_opwfu"]
 resource_local_to_scene = true
 shader = ExtResource("4_s1i5b")
@@ -135,6 +172,12 @@ libraries = {
 "": SubResource("AnimationLibrary_1ko5t")
 }
 
+[node name="HealAnimation" type="AnimatedSprite2D" parent="."]
+position = Vector2(23, -20)
+sprite_frames = SubResource("SpriteFrames_1xxkw")
+frame = 3
+frame_progress = 1.0
+
 [node name="HitRandomStreamPlayer" parent="." instance=ExtResource("2_pr1qx")]
 streams = Array[AudioStream]([ExtResource("3_pdltg"), ExtResource("4_awv8h"), ExtResource("5_76qe6"), ExtResource("6_b8lvt"), ExtResource("7_a8v34")])
 
@@ -199,7 +242,8 @@ shape = SubResource("CircleShape2D_nloqt")
 position = Vector2(0, -5)
 shape = SubResource("CircleShape2D_pyhhq")
 
-[connection signal="health_changed" from="HealthComponent" to="." method="_on_health_component_health_changed"]
+[connection signal="health_decreased" from="HealthComponent" to="." method="_on_health_component_health_decreased"]
+[connection signal="health_increased" from="HealthComponent" to="." method="_on_health_component_health_increased"]
 [connection signal="timeout" from="DamageIntervalTimer" to="." method="_on_damage_interval_timer_timeout"]
 [connection signal="area_entered" from="CollisionArea2D" to="." method="_on_collision_area_2d_area_entered"]
 [connection signal="area_exited" from="CollisionArea2D" to="." method="_on_collision_area_2d_area_exited"]

project/scenes/main/main.tscn

@@ -44,10 +44,11 @@ layer_0/tile_data = PackedInt32Array(1, 65536, 4, 0, 0, 4, 65549, 0, 4, 65548, 0
 
 [node name="Entities" type="Node" parent="." groups=["entities_layer"]]
 
-[node name="Player" parent="Entities" instance=ExtResource("1_npe2k")]
+[node name="Player" parent="Entities" node_paths=PackedStringArray("arena_time_manager") instance=ExtResource("1_npe2k")]
 unique_name_in_owner = true
 y_sort_enabled = true
 position = Vector2(302, 188)
+arena_time_manager = NodePath("../../ArenaTimeManager")
 
 [node name="Foreground" type="Node" parent="." groups=["foreground_layer"]]
 

project/scenes/user_interface/meta_menu.tscn

@@ -1,14 +1,15 @@
-[gd_scene load_steps=5 format=3 uid="uid://clihp56hepafs"]
+[gd_scene load_steps=6 format=3 uid="uid://clihp56hepafs"]
 
 [ext_resource type="Script" path="res://scenes/user_interface/meta_menu.gd" id="1_l38il"]
 [ext_resource type="Resource" uid="uid://bp7xek16yavrd" path="res://resources/meta_upgrades/experience_gain.tres" id="2_otbt2"]
 [ext_resource type="TileSet" uid="uid://bu6t2f3c06o87" path="res://resources/tile_set.tres" id="2_sprq2"]
+[ext_resource type="Resource" uid="uid://c6mexu74lkdgj" path="res://resources/meta_upgrades/health_regen.tres" id="3_e6kfk"]
 [ext_resource type="PackedScene" uid="uid://cubne56e2iung" path="res://scenes/user_interface/vignette.tscn" id="3_f7ehk"]
 
 [node name="MetaMenu" type="CanvasLayer"]
 layer = 2
 script = ExtResource("1_l38il")
-upgrades = Array[Resource("res://resources/meta_upgrades/meta_upgrade.gd")]([ExtResource("2_otbt2")])
+upgrades = Array[Resource("res://resources/meta_upgrades/meta_upgrade.gd")]([ExtResource("2_otbt2"), ExtResource("3_e6kfk")])
 
 [node name="TileMap" type="TileMap" parent="."]
 tile_set = ExtResource("2_sprq2")