108 lines
3.8 KiB
TypeScript
108 lines
3.8 KiB
TypeScript
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type IRunner = {
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getVariable(key: string): unknown;
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setVariable(key: string, value: unknown): void;
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setSmartVariable(name: string, expression: string): void;
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}
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export function getTtrpgFunctions(runner: IRunner){
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/* time related */
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function ensure_time(){
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if(!runner.getVariable("time_day")){
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runner.setVariable("time_day", 1);
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runner.setVariable("time_hour", 0);
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runner.setVariable("time_minute", 0);
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runner.setSmartVariable("hour_total", "$time_day * 24 + $time_hour");
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}
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}
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// midnight - 6am is night time
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function is_night(){
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ensure_time();
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const hour = runner.getVariable("time_hour") as number;
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return hour < 6;
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}
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function add_minute(delta: number){
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ensure_time();
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const min = (runner.getVariable("time_minute") as number) + delta;
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runner.setVariable("time_minute", min % 60);
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if(min >= 60) add_hour(Math.floor(min / 60));
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}
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function add_hour(delta: number){
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ensure_time();
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const hour = (runner.getVariable("time_hour") as number) + delta;
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runner.setVariable("time_hour", hour % 24);
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if(hour >= 24) add_day(Math.floor(hour / 24));
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}
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function add_day(delta: number){
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ensure_time();
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const day = (runner.getVariable("time_day") as number) + delta;
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runner.setVariable("time_day", day);
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}
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/* stat related */
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function ensure_stat(stat: string){
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if(!runner.getVariable(stat)){
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const statBase = `${stat}_base`;
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const statMod = `${stat}_mod`;
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const statDamage = `${stat}_damage`;
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const statWound = `${stat}_wound`;
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runner.setVariable(statBase, 10);
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runner.setVariable(statMod, 0);
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runner.setVariable(statDamage, 0);
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runner.setVariable(statWound, false);
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runner.setSmartVariable(stat, `$${statBase} - $${statDamage} + $${statMod}`);
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}
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}
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function get_stat(stat: string){
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ensure_stat(stat);
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return runner.getVariable(stat) as number || 0;
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}
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function damage(stat: string, amount: number){
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const current = get_stat(stat);
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if(amount * 2 >= current)
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runner.setVariable(`${stat}_wound`, true);
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const damage = get_stat(`${stat}_damage`);
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runner.setVariable(`${stat}_damage`, damage + amount);
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}
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function heal(stat: string, amount = 0){
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ensure_stat(stat);
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runner.setVariable(`${stat}_wound`, false);
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const damage = get_stat(`${stat}_damage`);
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runner.setVariable(`${stat}_damage`, Math.max(0, damage - amount));
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}
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function check(id: string, stat: string): number {
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const statVal = get_stat(stat);
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const pass = Math.ceil(Math.random() * 20) <= statVal;
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const key = `${id}_${pass ? 'pass' : 'fail'}`;
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const progress = runner.getVariable(key) as number || 0;
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const newProgress = progress + Math.ceil(Math.random() * 4);
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runner.setVariable(key, newProgress);
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return pass ? newProgress : -newProgress;
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}
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function rollStat(){
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const index = Math.floor(Math.random() * 6);
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return ['str', 'dex', 'con', 'int', 'wis', 'cha'][index];
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}
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function fatigue(){
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damage(rollStat(), 1);
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}
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function regen(){
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let stat = rollStat();
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if(runner.getVariable(`${stat}_wound`) || get_stat(`${stat}_damage`) <= 0) {
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stat = rollStat();
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}
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if(runner.getVariable(`${stat}_wound`) || get_stat(`${stat}_damage`) <= 0) {
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return;
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}
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heal(stat, 1);
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}
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return {
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add_minutes: add_minute,
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add_hours: add_hour,
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add_days: add_day,
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damage,
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heal,
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check,
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fatigue,
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regen,
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};
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}
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