Add tickable object framework

Author: embeddedt

common/src/main/java/org/embeddedt/modernfix/tickables/LoadableTickableObject.java

@@ -0,0 +1,47 @@
+package org.embeddedt.modernfix.tickables;
+
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+public class LoadableTickableObject<T> implements TickableObject {
+    private volatile int ticksInactive = 0;
+    private final int timeout;
+    private final Supplier<T> loader;
+    private final Consumer<T> finalizer;
+    private volatile T theObject = null;
+
+    public LoadableTickableObject(int timeout, Supplier<T> loader, Consumer<T> finalizer) {
+        this(timeout, loader, finalizer, null);
+    }
+
+    public LoadableTickableObject(int timeout, Supplier<T> loader, Consumer<T> finalizer, @Nullable T initialValue) {
+        this.timeout = timeout;
+        this.loader = loader;
+        this.finalizer = finalizer;
+        this.theObject = initialValue;
+    }
+
+    public T get() {
+        synchronized (this) {
+            ticksInactive++;
+            T obj = theObject;
+            if(obj == null) {
+                obj = loader.get();
+                theObject = obj;
+            }
+            return obj;
+        }
+    }
+
+    public final void tick() {
+        synchronized (this) {
+            ticksInactive++;
+            if(ticksInactive >= this.timeout) {
+                finalizer.accept(theObject);
+                theObject = null;
+            }
+        }
+    }
+}

common/src/main/java/org/embeddedt/modernfix/tickables/TickableObject.java

@@ -0,0 +1,5 @@
+package org.embeddedt.modernfix.tickables;
+
+public interface TickableObject {
+    void tick();
+}

common/src/main/java/org/embeddedt/modernfix/tickables/TickableObjectManager.java

@@ -0,0 +1,18 @@
+package org.embeddedt.modernfix.tickables;
+
+import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+public class TickableObjectManager {
+    private static final List<TickableObject> TICKABLE_OBJECT_LIST = new CopyOnWriteArrayList<>();
+
+    public static void register(TickableObject object) {
+        TICKABLE_OBJECT_LIST.add(object);
+    }
+
+    public static void runTick() {
+        for(TickableObject o : TICKABLE_OBJECT_LIST) {
+            o.tick();
+        }
+    }
+}