New object firedSlotStartOrStop (#3)

Author: pahund

README.md

@@ -94,6 +94,12 @@ useful for MIDI controllers.
 When this JS object receives a bang, it calculates the musical time in beats that
 a clip that has been fired will start playing.
 
+### firedSlotStartOrStop
+
+When this JS object receives an integer value as returned by the slot property
+*fired_slot_index*, it determines if that value means a clip will start playing
+or the track will stop playing, and issues a bang to outlet 1 or 2, accordingly.
+
 ## Developing your own js objects
 
 If you want to develop your own js objects, you probably want the build to

package.json

@@ -1,6 +1,6 @@
 {
   "name": "max-for-live-lib",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "Library of useful Max for Live objects",
   "private": true,
   "dependencies": {

src/objects/firedSlotStartOrStop/firedSlotStartOrStop.ts

@@ -0,0 +1,26 @@
+import { getNumberProperty, getLiveTrackIndex } from "../../util";
+
+autowatch = 1;
+inlets = 1;
+outlets = 3;
+setinletassist(0, "Integer: fired slot index");
+setoutletassist(0, "Bang: fired slot will start clip");
+setoutletassist(1, "Bang: no slot has been fired");
+setoutletassist(2, "Bang: fired slot will stop track");
+
+export function msg_int(value: number) {
+  if (value === -1) {
+    outlet(1, "bang");
+    return;
+  }
+  if (value !== -2) {
+    const hasClip = getNumberProperty(
+      `live_set tracks ${getLiveTrackIndex()} clip_slots ${value} has_clip`
+    );
+    if (hasClip) {
+      outlet(0, "bang");
+      return;
+    }
+  }
+  outlet(2, "bang");
+}

src/objects/firedSlotStartOrStop/index.ts

@@ -0,0 +1 @@
+export * from "./firedSlotStartOrStop";