125 lines
3.8 KiB
TypeScript
125 lines
3.8 KiB
TypeScript
/// <reference path="./IResource.ts" />
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abstract class Purchasable implements IResource {
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public readonly resourceType: ResourceType = ResourceType.consumable;
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public valueInWholeNumbers = true;
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public value = 0;
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public readonly cost: ResourceNumber = {};
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public inc?: (state: GameState) => number = undefined;
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public max?: (_state: GameState) => number = undefined;
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public userActions: ResourceAction[] = [
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{
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name: this._purchaseButtonText,
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description: this._purchaseDescription,
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isEnabled: (state: GameState): boolean =>
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(this.max === undefined || this.value < this.max(state)) &&
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state.isPurchasable(this.cost),
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performAction: (state: GameState): void => {
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this._purchase(state);
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},
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},
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];
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protected _costMultiplier: ResourceNumber = {};
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protected _sellMultiplier?: number | ResourceNumber;
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protected _isUnlocked = false;
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constructor(
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public readonly label: string,
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public readonly singularName: string,
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public readonly pluralName: string,
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public readonly description: string,
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canSell = false,
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private readonly _purchaseButtonText = 'Purchase',
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private readonly _purchaseDescription = `Buy a ${singularName}.`,
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private readonly _sellButtonText = 'Sell',
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private readonly _sellDescription = `Sell a ${singularName}.`
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) {
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if (canSell) {
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this.userActions.push({
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name: this._sellButtonText,
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description: this._sellDescription,
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isEnabled: (_state: GameState): boolean => this.value > 0,
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performAction: (state: GameState): void => {
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this._sell(state);
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},
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});
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}
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}
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public addValue(amount: number, _state: GameState): void {
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this.value += amount;
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}
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public isUnlocked(state: GameState): boolean {
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if (!this._isUnlocked && state.isPurchasable(this.cost)) {
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this._isUnlocked = true;
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}
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return this._isUnlocked;
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}
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public advanceAction(_time: number, _state: GameState): void {
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return;
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}
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public emitConfig: () => ResourceConfigValues = () => {
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return { isUnlocked: this._isUnlocked };
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};
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public restoreConfig: (config: ResourceConfigValues) => void = (config) => {
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if (typeof config.isUnlocked === 'boolean') {
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this._isUnlocked = config.isUnlocked;
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}
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};
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protected _purchaseLog(amount: number, _state: GameState): string {
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let verb = 'purchased';
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if (amount < 0) {
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verb = 'sold';
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amount *= -1;
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}
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return `You ${verb} ${amount} ${
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amount > 1 ? this.pluralName : this.singularName
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}.`;
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}
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private _purchase(state: GameState): void {
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if (this.max !== undefined && this.value >= this.max(state)) return;
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if (state.deductCost(this.cost)) {
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this.value += 1;
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state.log(this._purchaseLog(1, state));
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for (const key in this._costMultiplier) {
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const rkey = <ResourceKey>key;
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this.cost[rkey] =
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(this.cost[rkey] ?? 0) * (this._costMultiplier[rkey] ?? 1);
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}
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}
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}
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private _sell(state: GameState): void {
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if (this.value <= 0) return;
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const costBack: ResourceNumber = {};
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for (const key in this.cost) {
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const rkey = <ResourceKey>key;
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let cost = this.cost[rkey];
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if (cost === undefined) continue;
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// revert cost multiplier
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cost /= this._costMultiplier[rkey] ?? 1;
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this.cost[rkey] = cost;
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const multiplier =
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this._sellMultiplier === undefined
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? state.config.cfgDefaultSellMultiplier
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: typeof this._sellMultiplier === 'number'
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? this._sellMultiplier
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: this._sellMultiplier[rkey] ?? state.config.cfgDefaultSellMultiplier;
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// penalize return on used item
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costBack[rkey] = cost * -1 * multiplier;
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state.deductCost(costBack);
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}
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this.value -= 1;
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state.log(this._purchaseLog(-1, state));
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}
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}
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