texhno/FatCat_Tanks_Challenge
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More lib files, more functional

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Still missing that 'attack' fn, though :(
This commit is contained in:
texhno
2023-12-06 01:21:48 +01:00
parent 42b8afdecf
commit 545f8b4366
4 changed files with 43 additions and 15 deletions
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20
lib/helpers.ts
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@@ -1,17 +1,27 @@
import { ITank } from "./Tank";
import { filterR, pipe } from "./reducers";
type CritMultiplier = (health: number) => number;
export const critMultiplier: CritMultiplier = (health) =>
Math.floor(Math.random() * 10) >= 10 - health / 10 ? 1 : 2;
type SetStats = (tank: ITank) => ITank;
export const setStats: SetStats = (tank) => ({
...tank,
attackDelay: tank.attackDelay === 0 ? Math.floor(tank.health / 10) : tank.attackDelay - 1,
} as ITank);
type PickRandom = <T>(arr: T[]) => T;
export const pickRandom: PickRandom = (arr) =>
arr[Math.floor(Math.random() * arr.length)];
export const setProp = (prop, val) => (obj) => obj[prop] = val;
type IsLive = (tank: ITank) => boolean;
export const isLive: IsLive = (tank) => tank.health >= 0;
type IsOther = (name: string) => (tank: ITank) => boolean;
export const isOther: IsOther = (name) => (tank) => tank.name !== name;
export const isReadyToAttack = (tank: ITank) => tank.attackDelay === 0;
type DealDamageToRandom = (tanks: ITank[]) => (tank: ITank) => void;
export const dealDamageToRandom: DealDamageToRandom = (tanks) => (tank) => {
const target = pipe(filterR(isOther(tank.name)), pickRandom)(tanks);
const attackDamage = critMultiplier(tank.health) * tank.health / 100;
setProp("health", target.health - attackDamage)(target);
};