94 lines
2.6 KiB
TypeScript
94 lines
2.6 KiB
TypeScript
/// <reference path="BaseEffect.ts"/>
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module TK.SpaceTac {
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/**
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* Apply damage on a ship.
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*
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* Damage is applied on shield while there is some, then on the hull.
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*/
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export class DamageEffect extends BaseEffect {
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// Base damage points
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base: number;
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// Range of randomness (effective damage will be between *value* and *value+range*)
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span: number;
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constructor(value = 0, span = 0) {
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super("damage");
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this.base = value;
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this.span = span;
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}
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/**
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* Apply damage modifiers to get the final damage factor
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*/
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getFactor(ship: Ship): number {
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let percent = 0;
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iforeach(ship.ieffects(), effect => {
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if (effect instanceof DamageModifierEffect) {
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percent += effect.factor;
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}
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});
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return (clamp(percent, -100, 100) + 100) / 100;
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}
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/**
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* Get the effective damage done to both shield and hull (in this order)
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*/
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getEffectiveDamage(ship: Ship): [number, number] {
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var damage = (this.span > 0) ? RandomGenerator.global.randInt(this.base, this.base + this.span) : this.base;
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var hull: number;
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var shield: number;
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// Apply modifiers
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damage = Math.round(damage * this.getFactor(ship));
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// Apply on shields
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if (damage >= ship.getValue("shield")) {
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shield = ship.getValue("shield");
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} else {
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shield = damage;
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}
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damage -= shield;
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// Apply on hull
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if (damage >= ship.getValue("hull")) {
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hull = ship.getValue("hull");
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} else {
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hull = damage;
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}
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return [shield, hull];
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}
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getOnDiffs(ship: Ship, source: Ship | Drone): BaseBattleDiff[] {
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let [shield, hull] = this.getEffectiveDamage(ship);
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let result: BaseBattleDiff[] = [];
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if (shield || hull) {
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result.push(new ShipDamageDiff(ship, hull, shield));
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}
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if (shield) {
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result.push(new ShipValueDiff(ship, "shield", -shield));
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}
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if (hull) {
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result.push(new ShipValueDiff(ship, "hull", -hull));
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}
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return result;
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}
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getDescription(): string {
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if (this.span > 0) {
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return `do ${this.base}-${this.base + this.span} damage`;
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} else {
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return `do ${this.base} damage`;
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}
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}
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}
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}
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