refactor: group launched/in_space state

internal/controller/ship_group_move.go

@@ -42,8 +42,9 @@ func (c *Cache) moveShipGroup(i int, delta float64) {
 	var x, y float64
 	x, y, arrived =
 		util.NextTravelCoord(c.g.Map.Width, c.g.Map.Height, originX, originY, destPlanet.X.F(), destPlanet.Y.F(), delta)
-	sg.StateInSpace.X = game.F(x)
-	sg.StateInSpace.Y = game.F(y)
+	fx, fy := game.F(x), game.F(y)
+	sg.StateInSpace.X = &fx
+	sg.StateInSpace.Y = &fy
 	if arrived {
 		sg.StateInSpace = nil
 	}