feat: stream chunks in-game, render 3D catalog props, and ground chunk coordinates

scripts/chunk_scene.gd

@@ -54,20 +54,16 @@ var is_dirty: bool = false
 
 
 func _ready() -> void:
-	# Position this chunk scene at its world-space origin
-	global_position = bounds.position
-	# Set up collision shape for the chunk bounds
-	_setup_collision()
+	# Position this chunk scene at its 3D world ground coordinates
+	global_position = Vector3(
+		float(coord.x * Chunk.CHUNK_SIZE_X),
+		float(coord.z * Chunk.CHUNK_SIZE_Z),
+		float(coord.y * Chunk.CHUNK_SIZE_Y)
+	)
 
 
 func _setup_collision() -> void:
-	# Add a collision shape for the chunk's bounding box
-	var collision := CollisionShape3D.new()
-	var shape := BoxShape3D.new()
-	shape.size = bounds.size
-	collision.shape = shape
-	collision.name = "ChunkBounds"
-	add_child(collision)
+	pass
 
 
 ## Add a tile layer to this chunk scene.
@@ -91,9 +87,10 @@ func add_object(obj: WorldObject) -> void:
 func _add_static_object(obj: WorldObject) -> void:
 	var static_obj := StaticObjectNode.new()
 	static_obj.world_object = obj
-	static_obj.position = obj.position
-	static_obj.quaternion = Quaternion(obj.rotation.x, obj.rotation.y, obj.rotation.z, obj.rotation.w)
-	static_obj.scale = obj.scale
+	# Map chunk coordinates (X_ground, Y_ground, Z_height) to Godot 3D (X, Y_height, Z_ground)
+	static_obj.position = Vector3(obj.position.x, obj.position.z, obj.position.y)
+	static_obj.quaternion = Quaternion(obj.rotation.x, obj.rotation.z, obj.rotation.y, obj.rotation.w)
+	static_obj.scale = Vector3(obj.scale.x, obj.scale.z, obj.scale.y)
 	static_obj.name = "static_%s" % obj.id
 	add_child(static_obj)
 
@@ -101,9 +98,9 @@ func _add_static_object(obj: WorldObject) -> void:
 func _add_dynamic_object(obj: WorldObject) -> void:
 	var dynamic_obj := DynamicObjectNode.new()
 	dynamic_obj.world_object = obj
-	dynamic_obj.position = obj.position
-	dynamic_obj.quaternion = Quaternion(obj.rotation.x, obj.rotation.y, obj.rotation.z, obj.rotation.w)
-	dynamic_obj.scale = obj.scale
+	dynamic_obj.position = Vector3(obj.position.x, obj.position.z, obj.position.y)
+	dynamic_obj.quaternion = Quaternion(obj.rotation.x, obj.rotation.z, obj.rotation.y, obj.rotation.w)
+	dynamic_obj.scale = Vector3(obj.scale.x, obj.scale.z, obj.scale.y)
 	dynamic_obj.name = "dynamic_%s" % obj.id
 	add_child(dynamic_obj)