Counting Movement

Iseph decides to Stride. They have a Speed of 25 feet. Iseph moves straight south, spending 10 feet of their Speed, then diagonally, spending another 5 feet. Iseph's next diagonal move, because it's their second diagonal of the turn, costs 10 feet of movement. Iseph has spent all 25 feet of their Speed and ends that Stride. Iseph Seeks, and a control panel catches their eye to the north, so they decide to move toward it. They spend 5 feet of their Speed to head east. However, the debris is difficult terrain, so each dotted square costs 5 more feet of Speed. Iseph moves diagonally, spending 10 feet of movement since this is an odd-numbered diagonal. They want to move northeast again, but that would cost them 15 feet (10 feet for an even-numbered diagonal and 5 more for being difficult terrain). Instead, Iseph decides to move directly north. This costs them 10 feet, so they've used all 25 feet of their Speed and are out of actions.