samples: core: cleanup

samples/core/editors/thumbnail/thumbnail.lua

@@ -25,8 +25,8 @@ function UnitPreview:render(camera)
 	local camera_rot
 
 	if RenderWorld.sprite_instance(Thumbnail._rw, self._object._unit_id) then
-		camera_pos = Vector3(0, 1, 0)
-		camera_rot = Quaternion.look(Vector3.normalize(-camera_pos), Vector3(0, 0, 1))
+		camera_pos = Vector3.up()
+		camera_rot = Quaternion.look(Vector3.normalize(-camera_pos), Vector3.forward())
 	else
 		camera_pos = Vector3(1, 1, -1)
 		camera_rot = Quaternion.look(Vector3.normalize(-camera_pos))

samples/core/editors/unit_preview/unit_preview.lua

@@ -27,8 +27,8 @@ function UnitPreview:update(dt)
 		local camera_rot
 
 		if RenderWorld.sprite_instance(self._rw, self._object._unit_id) then
-			camera_pos = Vector3(0, 1, 0)
-			camera_rot = Quaternion.look(Vector3.normalize(-camera_pos), Vector3(0, 0, 1))
+			camera_pos = Vector3.up()
+			camera_rot = Quaternion.look(Vector3.normalize(-camera_pos), Vector3.forward())
 		else
 			camera_pos = Vector3(1, 1, -1)
 			camera_rot = Quaternion.look(Vector3.normalize(-camera_pos))