export type AdvanceEnergyInput = {
  energy: number;
  playerPower: number;
  opponentPower: number;
  deltaMs: number;
  balanceFactor: number;
};

export function advanceEnergy(input: AdvanceEnergyInput) {
  const deltaSeconds = Math.max(0, input.deltaMs) / 1000;
  const powerDelta = input.playerPower - input.opponentPower;
  return clampEnergy(input.energy + powerDelta * input.balanceFactor * deltaSeconds);
}

export function clampEnergy(value: number) {
  if (!Number.isFinite(value)) {
    return 0;
  }
  return Math.min(100, Math.max(-100, value));
}