WIP: Currently I'm not sure how to do it

scenes/characters/blue/dummy.gd

@@ -1,8 +1,11 @@
 extends Node3D
 
 
+var owner_placeholder: CharacterBody3D = null
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
+	print("ready")
+	owner_placeholder = _get_owner()
 	pass # Replace with function body.
 
 
@@ -12,5 +15,12 @@ func _process(delta: float) -> void:
 
 
 func _on_head_collision_body_part_hit(dam: Variant) -> void:
-	print("head is hit")
+	print("head is hit" + str(dam))
+	
+	owner_placeholder.take_damage(dam)
 	pass # Replace with function body.
+
+func _get_owner() -> CharacterBody3D:
+	var owner_placeholder := find_parent("CharacterPlaceholder")
+	return owner_placeholder
+	

scenes/characters/blue/head_collision.gd

@@ -4,10 +4,10 @@ extends Area3D
 
 signal body_part_hit(dam)
 # Called when the node enters the scene tree for the first time.
+
 func _ready() -> void:
 	pass # Replace with function body.
 
-
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
 	pass

scenes/characters/placeholder.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=9 format=3 uid="uid://b10lpwfjgxds4"]
+[gd_scene load_steps=10 format=3 uid="uid://b10lpwfjgxds4"]
 
 [ext_resource type="Script" path="res://scripts/player/player_input_controller.gd" id="1_q75ai"]
 [ext_resource type="Texture2D" uid="uid://oopj5mj1vdp0" path="res://assets/crosshairs/crosshair_default.png" id="2_lsd7c"]
@@ -72,6 +72,9 @@ _data = {
 "shooting": SubResource("Animation_ah507")
 }
 
+[sub_resource type="LabelSettings" id="LabelSettings_toaij"]
+font_size = 70
+
 [node name="CharacterPlaceholder" type="CharacterBody3D"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.799455, 0)
 collision_layer = 9
@@ -96,6 +99,7 @@ transform = Transform3D(-1, 0, -8.74228e-08, 0, 1, 0, 8.74228e-08, 0, -1, 0, 0,
 [node name="AimRay" type="RayCast3D" parent="FirstPersonCameraMount/BulletStartingPoint"]
 target_position = Vector3(0, 0, 1000)
 hit_from_inside = true
+collide_with_areas = true
 
 [node name="GunMount" type="Node3D" parent="FirstPersonCameraMount"]
 
@@ -130,5 +134,16 @@ grow_horizontal = 2
 grow_vertical = 2
 texture = ExtResource("2_lsd7c")
 
+[node name="HealthIndicator" type="Label" parent="FirstPersonCameraMount/HUD"]
+layout_mode = 1
+anchors_preset = 2
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_top = -23.0
+offset_right = 40.0
+grow_vertical = 0
+text = "100"
+label_settings = SubResource("LabelSettings_toaij")
+
 [node name="ModelMount" type="Node3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.790262, 0)

scenes/maps/el_test.tscn

@@ -1,10 +1,11 @@
-[gd_scene load_steps=81 format=4 uid="uid://c1v6kb00y77ij"]
+[gd_scene load_steps=82 format=4 uid="uid://c1v6kb00y77ij"]
 
 [ext_resource type="Script" path="res://scenes/maps/el_test.gd" id="1_d5e7i"]
 [ext_resource type="Texture2D" uid="uid://60qg81svnxfd" path="res://assets/models/maps/el_test_Image_0.png" id="2_o6seo"]
 [ext_resource type="Texture2D" uid="uid://blj7gvw33u8qd" path="res://assets/models/maps/el_test_Image_1.png" id="3_7c4ej"]
 [ext_resource type="Texture2D" uid="uid://to0g5ktan37x" path="res://assets/models/maps/el_test_Image_2.png" id="4_03be1"]
 [ext_resource type="Script" path="res://scenes/maps/csg_box_3d.gd" id="5_3oqpw"]
+[ext_resource type="PackedScene" uid="uid://1txob6jskn5s" path="res://scenes/characters/blue/dummy.tscn" id="6_4krea"]
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_1on1b"]
 resource_name = "Orange_Playground_Base_Color"
@@ -1193,3 +1194,6 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 4.72051, 0)
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
 environment = SubResource("Environment_ru18i")
 camera_attributes = SubResource("CameraAttributesPractical_vtlae")
+
+[node name="Dummy" parent="." instance=ExtResource("6_4krea")]
+transform = Transform3D(-1, 0, -8.74228e-08, 0, 1, 0, 8.74228e-08, 0, -1, 3.73853, 1.28053, -2.71689)

scenes/weapon/misc/bullet_trail_generic.gd

@@ -1,5 +1,6 @@
 extends MeshInstance3D
 
+var  alpha = 1.0
 func init(pos1, pos2):
 	var draw_mesh := ImmediateMesh.new()
 	mesh = draw_mesh
@@ -10,12 +11,15 @@ func init(pos1, pos2):
 
 # Called when the node enters the scene tree for the first time.
 func _ready() -> void:
+	var dup_material = material_override.duplicate()
+	material_override = dup_material 
 	pass # Replace with function body.
 
 
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta: float) -> void:
-	pass
+	alpha -= delta * 3.5
+	material_override.albedo_color.a = alpha
 
 
 func _on_timer_timeout() -> void:

scenes/weapon/misc/bullet_trail_generic.tscn

@@ -3,9 +3,11 @@
 [ext_resource type="Script" path="res://scenes/weapon/misc/bullet_trail_generic.gd" id="1_k8eg1"]
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ybqvs"]
-albedo_color = Color(0.934388, 0.967243, 0.955863, 1)
-emission = Color(1, 1, 1, 1)
-emission_energy_multiplier = 2.7
+transparency = 1
+albedo_color = Color(0.917767, 0.596302, 0, 1)
+emission_enabled = true
+emission = Color(0.454139, 0.861507, 0, 1)
+emission_energy_multiplier = 4.0
 
 [node name="BulletTrailGeneric" type="MeshInstance3D"]
 material_override = SubResource("StandardMaterial3D_ybqvs")

scripts/player/player_input_controller.gd

@@ -130,6 +130,12 @@ func _rotate_camera(sens_mod: float = 1.0) -> void:
 	rotation.y -= look_dir.x * camera_sens * sens_mod
 	first_view_camera_mount.rotation.x = clamp(first_view_camera_mount.rotation.x - look_dir.y * camera_sens * sens_mod, -1.5, 1.5)
 
+@onready var health_indicator = $FirstPersonCameraMount/HUD/HealthIndicator
+func _process(delta: float) -> void:
+	health_indicator.text = str(health)
+	if health == 0:
+		queue_free()
+	
 func _physics_process(delta: float) -> void:
 	# Add the gravity.
 	if not is_on_floor():
@@ -169,6 +175,8 @@ func _shoot():
 		var collider := aim_ray.get_collider()
 		if collider != null and collider.is_in_group("target"):
 			aim_ray.get_collider().take_damage()
+		if collider != null and collider.is_in_group("body"):
+			collider.hit()
 	var root := get_tree().get_root()
 	gun_with_hands.shoot()
 
@@ -198,3 +206,6 @@ func _hit_scan_collision(collision_point):
 func _hit_scan_damage(Collider):
 	#if Collider.is_in_group("target") and Collider.has_method("take_damage"):
 	print("damaged")
+
+func take_damage(dam: int):
+	health =- dam