Updates

Author: 27pchrisl

src/Interfaces/Monitor.php

@@ -6,5 +6,5 @@
 
 interface Monitor
 {
-    public function evaluate(mixed $previous, mixed $next): bool;
+    public function evaluate(int|bool|null $next): bool;
 }

src/Modules/Module.php

@@ -63,17 +63,11 @@ public function cancel(): void
     public function monitor(string $variable, Monitor $monitor, callable $callback): void
     {
         Event::listen(PollingEvent::class, function () use ($callback, $variable, $monitor) {
-            static $previous = null;
-
             $next = $this->getProcessImage()->readVariable($variable);
 
-            if ($previous !== null && $previous !== $next) {
-                if ($monitor->evaluate($previous, $next)) {
-                    $callback($next);
-                }
+            if ($monitor->evaluate($next)) {
+                $callback($next);
             }
-
-            $previous = $next;
         });
     }
 }

src/Monitors/DigitalMonitor.php

@@ -8,8 +8,17 @@
 
 class DigitalMonitor implements Monitor
 {
-    public function evaluate(mixed $previous, mixed $next): bool
+    protected int|bool|null $previous = null;
+
+    public function evaluate(int|bool|null $next): bool
     {
-        return $previous !== $next;
+        $previous = $this->previous;
+        $this->previous = $next;
+
+        if ($previous === null || $previous === $next) {
+            return false;
+        }
+
+        return true;
     }
 }