113 lines
3.3 KiB
TypeScript
113 lines
3.3 KiB
TypeScript
/// <reference path="BaseEffect.ts"/>
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module TK.SpaceTac {
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/**
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* Mode for damage effect
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*/
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export enum DamageEffectMode {
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// Apply on shield only
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SHIELD_ONLY,
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// Apply on shield, then remaining value on hull
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SHIELD_THEN_HULL,
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// Apply on shield only if up, otherwise on hull
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SHIELD_OR_HULL,
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// Apply on hull only
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HULL_ONLY
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}
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/**
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* Apply damage on a ship.
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*/
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export class DamageEffect extends BaseEffect {
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// Damage amount
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value: number
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// Damage mode
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mode: DamageEffectMode
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constructor(value: number, mode = DamageEffectMode.SHIELD_OR_HULL) {
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super("damage");
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this.value = value;
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this.mode = mode;
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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): ShipDamageDiff {
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let shield = ship.getValue("shield");
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let hull = ship.getValue("hull");
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let dhull = 0;
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let dshield = 0;
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// Apply modifiers
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let damage = Math.round(this.value * this.getFactor(ship));
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// Split in shield/hull damage
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if (this.mode == DamageEffectMode.HULL_ONLY) {
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dhull = Math.min(damage, hull);
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} else if (this.mode == DamageEffectMode.SHIELD_ONLY) {
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dshield = Math.min(damage, shield);
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} else if (this.mode == DamageEffectMode.SHIELD_OR_HULL) {
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if (shield) {
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dshield = Math.min(damage, shield);
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} else {
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dhull = Math.min(damage, hull);
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}
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} else {
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dshield = Math.min(damage, shield);
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dhull = Math.min(damage - dshield, hull);
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}
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return new ShipDamageDiff(ship, dhull, dshield, damage);
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}
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getOnDiffs(ship: Ship, source: Ship | Drone): BaseBattleDiff[] {
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let result: BaseBattleDiff[] = [];
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let damage = this.getEffectiveDamage(ship);
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if (damage.shield || damage.hull) {
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result.push(damage);
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}
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if (damage.shield) {
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result.push(new ShipValueDiff(ship, "shield", -damage.shield));
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}
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if (damage.hull) {
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result.push(new ShipValueDiff(ship, "hull", -damage.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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let mode = "";
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if (this.mode == DamageEffectMode.HULL_ONLY) {
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mode = " hull";
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} else if (this.mode == DamageEffectMode.SHIELD_ONLY) {
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mode = " shield";
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} else if (this.mode == DamageEffectMode.SHIELD_THEN_HULL) {
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mode = " piercing";
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}
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return `do ${this.value}${mode} damage`;
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}
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}
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}
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