40 lines
1.1 KiB
TypeScript
40 lines
1.1 KiB
TypeScript
import { mapR } from "./reducers";
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import { doIf, tap } from "./combinators";
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import { isLive, setProp, dealDamageToRandom, isReadyToAttack } from "./helpers";
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export interface ITank {
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name: string;
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health: number;
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attackDelay: number;
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}
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type BuildTank = (name: string) => ITank;
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export const buildTank: BuildTank = (name) => ({
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name,
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health: 100,
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attackDelay: 0,
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} as ITank);
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type Attack = (_prevTanks: ITank[], tank: ITank, tIndex: number, tanks: ITank[]) => ITank[];
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const attack: Attack = (_acc, tank, _iTank, tanks) => {
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tap(
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doIf(
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isReadyToAttack,
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dealDamageToRandom(tanks)
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)
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)(tank);
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return mapR(setProp("attackDelay", isReadyToAttack(tank) ? Math.floor(tank.health / 10) : tank.attackDelay - 1))(tanks);
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};
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type Attacks = (tanks: ITank[]) => ITank[];
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const attacksRound: Attacks = (tanks) =>
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tanks
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.reduce(attack, tanks)
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.filter(isLive);
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type Battle = (remainingTanks: ITank[]) => ITank;
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export const battleItOut: Battle = (remainingTanks: ITank[]) =>
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remainingTanks.length === 1
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? remainingTanks[0]
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: battleItOut(attacksRound(remainingTanks));
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