feature: generator nr pociągi

src/utils/speedLimitUtils.ts

@@ -0,0 +1,14 @@
+import speedLimitTable from '../constants/speedLimits.json';
+export type LocoType = keyof typeof speedLimitTable;
+
+export const calculateSpeedLimit = (locoType: LocoType, stockMass: number, isTrainPassenger: boolean) => {
+  const speedTable = speedLimitTable[locoType][isTrainPassenger ? 'passenger' : 'cargo'];
+
+  if (!speedTable) return undefined;
+
+  let speedLimit = 0;
+  for (let mass in speedTable) if (stockMass > Number(mass)) speedLimit = (speedTable as any)[mass];
+
+  return speedLimit;
+};
+