Event superclass for Note and Sound

src/Event.ts

@@ -0,0 +1,53 @@
+import { type Editor } from './main';
+
+export class Event {
+    seedValue: string|undefined = undefined;
+    randomGen: Function = Math.random;
+    app: Editor;
+
+    constructor(app: Editor) {
+        this.app = app;
+        if(this.app.api.currentSeed) {
+            this.randomGen = this.app.api.randomGen;
+        }
+    }
+
+    sometimesBy = (probability: number, func: Function): Event => {
+        if(this.randomGen() < probability) {
+            return this.modify(func);
+        }
+        return this;
+    }
+
+    sometimes = (func: Function): Event => {
+        return this.sometimesBy(0.5, func);
+    }
+
+    rarely = (func: Function): Event => {
+        return this.sometimesBy(0.1, func);
+    }
+
+    often = (func: Function): Event => {
+        return this.sometimesBy(0.9, func);
+    }
+
+    modify = (func: Function): Event => {
+        return func(this);
+    }
+
+    seed = (value: string|number): Event => {
+        this.seedValue = value.toString();
+        this.randomGen = this.app.api.localSeededRandom(this.seedValue);
+        return this;
+    }
+
+    clear = (): Event => {
+        this.app.api.clearLocalSeed(this.seedValue);
+        return this;
+    }
+
+    apply = (func: Function): Event => {
+        return this.modify(func);
+    }
+
+}