add essence and magic table

scripts/EnchantedSphere.gd

@@ -0,0 +1,25 @@
+extends Node3D
+
+@onready var tooltip: Label3D = $Tooltip
+@onready var mesh_node: MeshInstance3D = $SphereMesh
+
+func _ready() -> void:
+	add_to_group("interactable")
+	tooltip.visible = false
+	var tw := create_tween().set_loops()
+	tw.tween_property(self, "position:y", 0.7, 0.9)
+	tw.tween_property(self, "position:y", 0.3, 0.9)
+
+func _process(delta: float) -> void:
+	rotation.y += delta * 1.8
+	mesh_node.rotation.x += delta * 0.9
+	var players := get_tree().get_nodes_in_group("player")
+	if players.is_empty():
+		tooltip.visible = false
+		return
+	var p := players[0] as Node3D
+	tooltip.visible = p != null and global_position.distance_to(p.global_position) < 2.5
+
+func interact(player: Node) -> void:
+	player.call("apply_upgrade_enchant")
+	queue_free()

scripts/EnchantedSphere.gd.uid

@@ -0,0 +1 @@
+uid://c4d11cs4fcqib

scripts/Enemy.gd

@@ -1,9 +1,10 @@
 class_name Enemy
 extends CharacterBody3D
 
-const PICKUP_SCENE  := preload("res://scenes/Pickup.tscn")
-const LEATHER_SCENE := preload("res://scenes/Leather.tscn")
-const IRON_SCENE    := preload("res://scenes/Iron.tscn")
+const PICKUP_SCENE   := preload("res://scenes/Pickup.tscn")
+const LEATHER_SCENE  := preload("res://scenes/Leather.tscn")
+const IRON_SCENE     := preload("res://scenes/Iron.tscn")
+const ESSENCE_SCENE  := preload("res://scenes/Essence.tscn")
 
 signal died(points: int)
 signal merged(upgrade: bool)
@@ -12,6 +13,7 @@ enum State { CHASING, FLYING, STUNNED, DEAD, MERGING }
 
 static var first_leather_spawned: bool = false
 static var first_iron_spawned: bool = false
+static var first_essence_spawned: bool = false
 
 var kickable_type: String = ""
 var tier: int = 1
@@ -277,6 +279,14 @@ func _try_drop_pickup() -> void:
 			get_parent().add_child(iron)
 			iron.global_position = global_position
 
+	if enemy_level == 3:
+		var drop_essence := not first_essence_spawned or randf() < 0.20
+		if drop_essence:
+			first_essence_spawned = true
+			var essence := ESSENCE_SCENE.instantiate() as Node3D
+			get_parent().add_child(essence)
+			essence.global_position = global_position
+
 	var roll := randf()
 	var p_type := ""
 	var p_heal := 0

scripts/Essence.gd

@@ -0,0 +1,105 @@
+extends CharacterBody3D
+
+const ENCHANTED_SPHERE_SCENE := preload("res://scenes/EnchantedSphere.tscn")
+
+signal destroyed
+
+enum State { IDLE, FLYING }
+
+const AIR_FRICTION  := 0.88
+const MIN_SPEED     := 0.3
+const WALL_BOUNCE   := 0.6
+const WALL_SELF_DMG := 0.0
+
+var kickable_type: String = "essence"
+var tier: int = 3
+var state: State = State.IDLE
+var fly_vel: Vector3 = Vector3.ZERO
+var health: float = 999.0
+var dead: bool = false
+var damage_modifier: float = 0.0
+
+@onready var mesh_node: MeshInstance3D = $EssenceMesh
+var essence_mat: StandardMaterial3D
+
+func _ready() -> void:
+	add_to_group("kickable")
+	essence_mat = mesh_node.material_override.duplicate() as StandardMaterial3D
+	mesh_node.material_override = essence_mat
+	var tw := create_tween().set_loops()
+	tw.tween_property(self, "position:y", 0.35, 0.6)
+	tw.tween_property(self, "position:y", 0.15, 0.6)
+
+func apply_collision_damage(_dmg: float) -> void:
+	pass
+
+func receive_kick(direction: Vector3, force: float) -> void:
+	fly_vel = direction * force
+	fly_vel.y = 0.0
+	state = State.FLYING
+
+func _physics_process(delta: float) -> void:
+	if state == State.IDLE:
+		mesh_node.rotation.y += delta * 1.5
+		return
+	_fly(delta)
+
+func _fly(delta: float) -> void:
+	var speed_now := Vector2(fly_vel.x, fly_vel.z).length()
+	velocity = fly_vel
+	velocity.y = 0.0
+	move_and_slide()
+
+	var handled := false
+	for i in get_slide_collision_count():
+		var col := get_slide_collision(i)
+		var col3d := col.get_collider() as Node3D
+		if col3d == null:
+			continue
+		if col3d.has_meta("is_enchanting_table"):
+			_hit_table(col3d)
+			return
+		if col3d.has_meta("is_wall"):
+			var normal := col.get_normal()
+			normal.y = 0.0
+			if normal.length() > 0.01:
+				fly_vel = fly_vel.bounce(normal.normalized()) * WALL_BOUNCE
+			else:
+				fly_vel = Vector3.ZERO
+			handled = true
+			break
+		elif col3d.is_in_group("enemies") or col3d.is_in_group("kickable"):
+			if col3d == self:
+				continue
+			KickSystem.resolve(self, col3d, fly_vel)
+			fly_vel *= 0.4
+			handled = true
+			break
+
+	if not handled:
+		fly_vel = velocity
+		fly_vel.y = 0.0
+
+	fly_vel *= pow(AIR_FRICTION, delta * 60.0)
+
+	if Vector2(fly_vel.x, fly_vel.z).length() < MIN_SPEED:
+		fly_vel = Vector3.ZERO
+		velocity = Vector3.ZERO
+		state = State.IDLE
+
+	mesh_node.rotation.y += delta * speed_now * 0.4
+
+func _hit_table(table: Node3D) -> void:
+	if dead:
+		return
+	dead = true
+	state = State.IDLE
+	set_physics_process(false)
+	var parent := get_parent()
+	var spawn_pos := table.global_position + Vector3(0, 0.5, 0)
+	queue_free()
+	if parent == null:
+		return
+	var sphere := ENCHANTED_SPHERE_SCENE.instantiate() as Node3D
+	parent.add_child(sphere)
+	sphere.global_position = spawn_pos

scripts/Essence.gd.uid

@@ -0,0 +1 @@
+uid://bk2vad35jr81c

scripts/Main.gd

@@ -172,6 +172,7 @@ func _start_game() -> void:
 	kills_for_next = 10
 	Enemy.first_leather_spawned = false
 	Enemy.first_iron_spawned = false
+	Enemy.first_essence_spawned = false
 	_update_labels()
 	spawn_timer.wait_time = 1.4
 	spawn_timer.connect("timeout", _on_spawn_timer)

scripts/Player.gd

@@ -241,3 +241,9 @@ func apply_upgrade_armor() -> void:
 	var tw := create_tween()
 	tw.tween_property(player_mat, "albedo_color", Color(0.7, 0.8, 1.0), 0.1)
 	tw.tween_property(player_mat, "albedo_color", BASE_COLOR, 0.5)
+
+func apply_upgrade_enchant() -> void:
+	tier += 1
+	var tw := create_tween()
+	tw.tween_property(player_mat, "albedo_color", Color(0.8, 0.2, 1.0), 0.1)
+	tw.tween_property(player_mat, "albedo_color", BASE_COLOR, 0.6)