feat: check function

src/components/stores/yarnStore.ts

@@ -38,7 +38,21 @@ export function createYarnStore(element: HTMLElement, props: RunnerOptions){
             const ast = parseYarn(content);
             const program = compile(ast);
 
-            return new YarnRunner(program, props);
+            const runner = new YarnRunner(program, {
+                functions: {
+                    check(id: string, stat: string): number {
+                        const statVal = runner.getVariable(stat) as number || 10;
+                        const pass = Math.ceil(Math.random() * 20) <= statVal;
+                        const key = `${id}_${pass ? 'pass' : 'fail'}`;
+                        const progress = runner.getVariable(key) as number || 0;
+                        const newProgress = progress + Math.ceil(Math.random() * 4);
+                        runner.setVariable(key, newProgress);
+                        return pass ? newProgress : -newProgress;
+                    }
+                },
+                startAt: props.startAt,
+            });
+            return runner;
         } catch (error) {
             console.error('Failed to initialize YarnRunner:', error);
             return null;