Function npcAt

examples/isometric-rpg/main.ts:233–238

(x: number, y: number)

}

function npcAt(x: number, y: number): number {
  for (let i = 0; i < npcs.length; i++) {
    if (npcs[i].hp > 0 && npcs[i].mapX === x && npcs[i].mapY === y) return i;
  }
  return -1;
}

function tryMovePlayer(dx: number, dy: number): void {
  const nx = player.mapX + dx;