Added player health and health bar

2026-06-29 19:45:21 +03:00
parent 05b31471aa
commit aa95e704d4
10 changed files with 283 additions and 3 deletions
@@ -2,6 +2,13 @@ class_name Player
 extends CharacterBody2D


+signal health_changed(value: float)
+signal dead()
+
+
+const MAX_HEALTH = 100.0
+
+
@export_group("Movement", "move")
@export_range(0.0, 1000.0) var move_max_speed_normal := 350
@export_range(0.0, 1000.0) var move_max_speed_slowed := 250
@@ -28,6 +35,11 @@ var _slow_down_tween: Tween

 var _last_wall_normal: = 0.0

+var _current_health: = MAX_HEALTH:
+	set(value):
+		_current_health = value
+		health_changed.emit(_current_health)
+

@onready var player_sprite : AnimatedSprite2D = $PlayerSprite
@onready var blade_sprite : AnimatedSprite2D = $BladeSprite
@@ -126,6 +138,13 @@ func _input(event: InputEvent) -> void:
 				_attack()


+func deal_damage(value: float) -> void:
+	_current_health -= value
+	health_changed.emit(_current_health)
+	if _current_health < 0.0 or is_zero_approx(_current_health):
+		dead.emit()
+
+
 func _attack() -> void:
 	var sprite := attack_left_sprite if velocity.x <= 0.0 else attack_right_sprite
 	sprite.show()
@@ -0,0 +1,71 @@
+class_name HealthBar
+extends Node2D
+
+const ANIMATION_ALERT = "alert"
+
+const SHADER_MAX_VALUE = "shader_parameter/max_value"
+const SHADER_CURRENT_VALUE = "shader_parameter/current_value"
+const SHADER_OLD_VALUE = "shader_parameter/old_value"
+
+
+const OLD_VALUE_DECRETION_RATE = 25.0
+
+
+var _max_value := 0.0:
+	set(value):
+		_max_value = value
+		if is_node_ready():
+			health_sprite.material.set(SHADER_MAX_VALUE, _max_value)
+
+var _current_value := 0.0:
+	set(value):
+		_current_value = value
+		if is_node_ready():
+			health_sprite.material.set(SHADER_CURRENT_VALUE, _current_value)
+
+var _old_value := 0.0:
+	set(value):
+		_old_value = value
+		if is_node_ready():
+			health_sprite.material.set(SHADER_OLD_VALUE, _old_value)
+
+var _old_value_tween : Tween
+
+var _is_animation_needed := false
+
+
+@onready var background_sprite : Sprite2D = $BackgroundSprite
+@onready var alert_sprite : Sprite2D = $AlertSprite
+@onready var health_sprite : Sprite2D = $HealthSprite
+
+@onready var animation_player : AnimationPlayer = $AnimationPlayer
+
+
+func _ready() -> void:
+	alert_sprite.hide()
+
+
+func _process(_delta: float) -> void:
+	if _is_animation_needed and not animation_player.is_playing():
+		animation_player.play(ANIMATION_ALERT)
+		_is_animation_needed = false
+
+
+func initialize(max_value: float, value: float) -> void:
+	_max_value = max_value
+	_current_value = value
+	_old_value = value
+
+
+func set_current_value(value: float) -> void:
+	if value < _current_value:
+		_is_animation_needed = true
+	
+	_current_value = value
+	var time := (_old_value - _current_value)/OLD_VALUE_DECRETION_RATE
+	
+	if _old_value_tween and _old_value_tween.is_running():
+		_old_value_tween.kill()
+	
+	_old_value_tween = create_tween()
+	_old_value_tween.tween_property(self, "_old_value", _current_value, abs(time))
@@ -0,0 +1 @@
+uid://nkpolcm0u4dw
@@ -0,0 +1,79 @@
+[gd_scene format=3 uid="uid://b1x0tmnf7hx7h"]
+
+[ext_resource type="Script" uid="uid://nkpolcm0u4dw" path="res://game/hud/health_bar.gd" id="1_2bnd8"]
+[ext_resource type="Texture2D" uid="uid://bud580fp54qdi" path="res://images/hud/health_bar.png" id="2_hc5qd"]
+[ext_resource type="Shader" uid="uid://cdo2tw14pkf6n" path="res://game/shaders/health_bar.gdshader" id="3_vrpsd"]
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_2bnd8"]
+atlas = ExtResource("2_hc5qd")
+region = Rect2(0, 16, 80, 16)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_hc5qd"]
+atlas = ExtResource("2_hc5qd")
+region = Rect2(0, 0, 80, 16)
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_hc5qd"]
+shader = ExtResource("3_vrpsd")
+shader_parameter/max_value = 0.0
+shader_parameter/current_value = 0.0
+shader_parameter/old_value = 0.0
+shader_parameter/health_color = Color(0.36862746, 0.99215686, 0.5529412, 1)
+shader_parameter/depletion_color = Color(0.32941177, 0.6509804, 0.41568628, 1)
+shader_parameter/restoration_color = Color(1, 1, 1, 1)
+shader_parameter/background_color = Color(0, 0, 0, 0)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_vrpsd"]
+atlas = ExtResource("2_hc5qd")
+region = Rect2(2, 32, 76, 16)
+
+[sub_resource type="Animation" id="Animation_hc5qd"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("AlertSprite:visible")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [true]
+}
+
+[sub_resource type="Animation" id="Animation_vrpsd"]
+resource_name = "alert"
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("AlertSprite:visible")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.1, 0.2, 0.3, 0.4, 0.5),
+"transitions": PackedFloat32Array(1, 1, 1, 1, 1, 1),
+"update": 1,
+"values": [true, false, true, false, true, false]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_5m3x1"]
+_data = {
+&"RESET": SubResource("Animation_hc5qd"),
+&"alert": SubResource("Animation_vrpsd")
+}
+
+[node name="HealthBar" type="Node2D" unique_id=256637218]
+script = ExtResource("1_2bnd8")
+
+[node name="BackgroundSprite" type="Sprite2D" parent="." unique_id=92025763]
+texture = SubResource("AtlasTexture_2bnd8")
+
+[node name="AlertSprite" type="Sprite2D" parent="." unique_id=434583744]
+texture = SubResource("AtlasTexture_hc5qd")
+
+[node name="HealthSprite" type="Sprite2D" parent="." unique_id=1962337283]
+material = SubResource("ShaderMaterial_hc5qd")
+texture = SubResource("AtlasTexture_vrpsd")
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="." unique_id=1840862293]
+libraries/ = SubResource("AnimationLibrary_5m3x1")
@@ -2,6 +2,9 @@ class_name AbstractLevel
 extends Node2D


+const CORRUPTION_DAMAGE = 10.0
+
+
@export var initial_corruption_x := 0.0
@export var corruption_speed := 0.0

@@ -11,6 +14,9 @@ var _corruption_x: float

@onready var player : Player = $Player
@onready var pause_menu : PauseMenu = $%PauseMenu
+@onready var health_bar : HealthBar = $%HealthBar
+
+@onready var corruption_timer : Timer = $CorruptionTimer

@onready var level_material : ShaderMaterial = $%LevelColorRect.material

@@ -18,21 +24,35 @@ var _corruption_x: float
 func _ready() -> void:
 	_corruption_x = initial_corruption_x
 	pause_menu.hide()
+	health_bar.initialize(player.MAX_HEALTH, player.MAX_HEALTH)
+	player.health_changed.connect(health_bar.set_current_value)
 	
 	#TODO Add gameplay music


-func _process(delta: float) -> void:
-	_corruption_x += corruption_speed * delta
-
+func _process(_delta: float) -> void:
 	var screen_to_world := player.camera.get_canvas_transform().affine_inverse()
 	level_material.set_shader_parameter("screen_to_world", screen_to_world)
 	level_material.set_shader_parameter("corruption_x", _corruption_x)


+func _physics_process(delta: float) -> void:
+	_corruption_x += corruption_speed * delta
+	
+	if player.position.x < _corruption_x:
+		if corruption_timer.is_stopped():
+			corruption_timer.start()
+	else:
+		corruption_timer.stop()
+
+
 func _input(event: InputEvent) -> void:
 	if event.is_action_pressed("pause"):
 		SoundManager.play_ui_stream(SoundManager.ui_stream_accept)
 		get_tree().paused = true
 		pause_menu.show()
 		Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+
+
+func _on_corruption_timer_timeout() -> void:
+	player.deal_damage(CORRUPTION_DAMAGE)
@@ -5,6 +5,7 @@
 [ext_resource type="PackedScene" uid="uid://0e3xvmn36j5b" path="res://game/menu/pause_menu.tscn" id="3_fnnmn"]
 [ext_resource type="Shader" uid="uid://brudtlwas6x66" path="res://game/shaders/glitch.gdshader" id="4_6b8cu"]
 [ext_resource type="Texture2D" uid="uid://b8rm1kxgci4l1" path="res://images/level/beams.png" id="4_pi5fd"]
+[ext_resource type="PackedScene" uid="uid://b1x0tmnf7hx7h" path="res://game/hud/health_bar.tscn" id="6_x8k35"]

 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_6b8cu"]
 resource_name = "Beams"
@@ -1195,3 +1196,11 @@ offset_bottom = 360.0
 [node name="PauseMenu" parent="CanvasLayer" unique_id=1815975678 instance=ExtResource("3_fnnmn")]
 unique_name_in_owner = true
 process_mode = 2
+
+[node name="HealthBar" parent="CanvasLayer" unique_id=256637218 instance=ExtResource("6_x8k35")]
+unique_name_in_owner = true
+position = Vector2(51, 19)
+
+[node name="CorruptionTimer" type="Timer" parent="." unique_id=783383429]
+
+[connection signal="timeout" from="CorruptionTimer" to="." method="_on_corruption_timer_timeout"]
@@ -0,0 +1,37 @@
+shader_type canvas_item;
+
+uniform float max_value;
+uniform float current_value;
+uniform float old_value;
+
+uniform vec4 health_color : source_color = vec4(0.0, 0.65, 0.0, 1.0);
+uniform vec4 depletion_color : source_color = vec4(0.0, 0.3, 0.0, 1.0);
+uniform vec4 restoration_color : source_color = vec4(0.0, 1.0, 0.0, 1.0);
+uniform vec4 background_color : source_color = vec4(0.0, 0.0, 0.0, 0.0);
+
+void fragment() {
+	float fill = current_value / max_value;
+	float old_fill = old_value / max_value;
+	
+	vec4 color;
+	
+	if (current_value <= old_value) {
+		if (UV.x < fill) {
+			color = health_color;
+		} else if (UV.x < old_fill) {
+			color = depletion_color;
+		} else {
+			color = background_color;
+		}
+	} else {
+		if (UV.x < old_fill) {
+			color = health_color;
+		} else if (UV.x < fill) {
+			color = restoration_color;
+		} else {
+			color = background_color;
+		}
+	}
+	
+	COLOR = vec4(color.rgb, color.a * COLOR.a);
+}
@@ -0,0 +1 @@
+uid://cdo2tw14pkf6n
@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bud580fp54qdi"
+path="res://.godot/imported/health_bar.png-dcd0e5acd727c0d7b2bc135b358ef446.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://images/hud/health_bar.png"
+dest_files=["res://.godot/imported/health_bar.png-dcd0e5acd727c0d7b2bc135b358ef446.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+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/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+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