Press n or j to go to the next uncovered block, b, p or k for the previous block.
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export class Roll {
public static CRITICAL_FAILURE = 1;
public static CRITICAL_SUCCESS = 6;
public readonly dice: DiceInterface;
public readonly diceSides: number;
public readonly diceNumber: number;
public readonly modifier: number;
protected isFailure = false;
protected isSuccess = false;
/**
* Constructor
*
* @param dieCode string Regex matching a number of dices, their sides and a modifier
*/
public constructor(dieCode?: string) {
this.diceNumber = 1;
this.diceSides = 6;
this.modifier = 0;
if (dieCode != undefined) {
const re = /(\d)?[Dd]6([+-])?(\d)*/;
const matches = dieCode.match(re);
if (matches !== null) {
this.diceNumber = Number.parseInt(matches[1] || String(this.diceNumber), 10);
this.modifier = Number.parseInt(matches[2] + matches[3] || String(this.modifier), 10);
}
}
this.dice = this.createDice();
}
/**
* Get roll reesult
* @return number
*/
public getResult(): number {
return this.roll();
}
/**
* Is a critical failure
* @return boolean
*/
public isCriticalFailure(): boolean {
return this.isFailure;
}
/**
* Is a critical success
* @return boolean
*/
public isCriticalSuccess(): boolean {
return this.isSuccess;
}
/**
* Check if roll is greater or equal than target
* @return boolean
*/
public resolve(target: number): boolean {
return this.getResult() >= target;
}
/**
* Dice builder
*
* @return DiceInterface
*/
// eslint-disable-next-line class-methods-use-this
private createDice(): DiceInterface {
return new Dice6();
}
/**
* Roll dices
*
* @return number
*/
private roll(): number {
let rollResult = 0;
let temporary: number;
// Wild die
rollResult += this.dice.roll();
switch (rollResult) {
case Roll.CRITICAL_FAILURE: {
this.isFailure = true;
break;
}
case Roll.CRITICAL_SUCCESS: {
this.isSuccess = true;
// eslint-disable-next-line no-loops/no-loops
do {
temporary = this.dice.roll();
rollResult += temporary;
} while (Roll.CRITICAL_SUCCESS === temporary);
break;
}
default: {
// eslint-disable-next-line no-loops/no-loops
for (let index = 0; index < this.diceNumber - 1; index++) {
rollResult += this.dice.roll();
}
}
}
let result = rollResult + this.modifier;
if (result <= 0) {
result = 1;
}
return result;
}
}
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