feat: Implement core Player character with networking, movement, and character selection logic, along with a new pointer shader.

assets/shaders/character_pointer.gdshader

@@ -0,0 +1,8 @@
+shader_type spatial;
+render_mode unshaded, blend_mix, depth_draw_opaque;
+
+uniform vec4 pointer_color : source_color = vec4(0.0, 1.0, 0.0, 1.0);
+
+void fragment() {
+	ALBEDO = pointer_color.rgb;
+	}

assets/shaders/character_pointer.gdshader.uid

@@ -0,0 +1 @@
+uid://kadpokx0uoai

scenes/player.gd

@@ -219,13 +219,22 @@ func _ready():
 	$Name.text = display_name
 	
 	# Character Pointer Visibility
-	# Show only for our local player (not bots, not other players)
+	# Visible to all human players. Green for local player, Red for others.
 	var pointer = get_node_or_null("CharacterPointer")
 	if pointer:
-		if is_bot or is_in_group("Bots"):
-			pointer.visible = false
+		pointer.visible = true
+			
+		var pointer_shader = load("res://assets/shaders/character_pointer.gdshader")
+		var mat = ShaderMaterial.new()
+		mat.shader = pointer_shader
+			
+		if is_multiplayer_authority():
+			mat.set_shader_parameter("pointer_color", Color(0.0, 1.0, 0.0, 1.0)) # Green
 		else:
-			pointer.visible = is_multiplayer_authority()
+			mat.set_shader_parameter("pointer_color", Color(1.0, 0.0, 0.0, 1.0)) # Red
+				
+		if pointer is MeshInstance3D:
+			pointer.material_override = mat
 	
 	# Sync name to other peers if this is our local player or a bot we own
 	if is_multiplayer_authority() and can_rpc():