1 files changed, 76 insertions, 20 deletions

diff --git a/src/main/java/me/xmrvizzy/skyblocker/utils/Scheduler.java b/src/main/java/me/xmrvizzy/skyblocker/utils/Scheduler.java
index 16e5b023..7b19e284 100644
--- a/src/main/java/me/xmrvizzy/skyblocker/utils/Scheduler.java
+++ b/src/main/java/me/xmrvizzy/skyblocker/utils/Scheduler.java
@@ -1,60 +1,116 @@
 package me.xmrvizzy.skyblocker.utils;
 
+import me.xmrvizzy.skyblocker.SkyblockerMod;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.screen.Screen;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.util.PriorityQueue;
+import java.util.function.Supplier;
 
+/**
+ * A scheduler for running tasks at a later time. Tasks will be run synchronously on the main client thread. Use the instance stored in {@link SkyblockerMod#scheduler}. Do not instantiate this class.
+ */
 public class Scheduler {
     private static final Logger LOGGER = LoggerFactory.getLogger(Scheduler.class);
-    private int currentTick;
-    private final PriorityQueue<ScheduledTask> tasks;
+    private int currentTick = 0;
+    private final PriorityQueue<ScheduledTask> tasks = new PriorityQueue<>();
 
+    /**
+     * Do not instantiate this class. Use {@link SkyblockerMod#scheduler} instead.
+     */
+    @SuppressWarnings("DeprecatedIsStillUsed")
+    @Deprecated
     public Scheduler() {
-        currentTick = 0;
-        tasks = new PriorityQueue<>();
     }
 
+    /**
+     * Schedules a task to run after a delay.
+     *
+     * @param task  the task to run
+     * @param delay the delay in ticks
+     */
     public void schedule(Runnable task, int delay) {
-        if (delay < 0)
+        if (delay < 0) {
             LOGGER.warn("Scheduled a task with negative delay");
-        ScheduledTask tmp = new ScheduledTask(currentTick + delay, task);
+        }
+        ScheduledTask tmp = new ScheduledTask(task, currentTick + delay);
         tasks.add(tmp);
     }
 
+    /**
+     * Schedules a task to run every period ticks.
+     *
+     * @param task   the task to run
+     * @param period the period in ticks
+     */
     public void scheduleCyclic(Runnable task, int period) {
-        if (period <= 0)
+        if (period <= 0) {
             LOGGER.error("Attempted to schedule a cyclic task with period lower than 1");
-        else
+        } else {
             new CyclicTask(task, period).run();
+        }
+    }
+
+    /**
+     * Schedules a screen to open in the next tick. Used in commands to avoid screen immediately closing after the command is executed.
+     *
+     * @param screenSupplier the supplier of the screen to open
+     */
+    public void queueOpenScreen(Supplier<Screen> screenSupplier) {
+        queueOpenScreen(screenSupplier.get());
+    }
+
+    /**
+     * Schedules a screen to open in the next tick. Used in commands to avoid screen immediately closing after the command is executed.
+     *
+     * @param screen the supplier of the screen to open
+     */
+    public void queueOpenScreen(Screen screen) {
+        MinecraftClient.getInstance().send(() -> MinecraftClient.getInstance().setScreen(screen));
     }
 
     public void tick() {
         currentTick += 1;
         ScheduledTask task;
-        while ((task = tasks.peek()) != null && task.schedule <= currentTick) {
+        while ((task = tasks.peek()) != null && task.schedule <= currentTick && runTask(task)) {
             tasks.poll();
-            task.run();
         }
     }
 
-    private class CyclicTask implements Runnable {
-        private final Runnable inner;
-        private final int period;
-
-        public CyclicTask(Runnable task, int period) {
-            this.inner = task;
-            this.period = period;
-        }
+    /**
+     * Runs the task if able.
+     *
+     * @param task the task to run
+     * @return {@code true} if the task is run, and {@link false} if task is not run.
+     */
+    protected boolean runTask(Runnable task) {
+        task.run();
+        return true;
+    }
 
+    /**
+     * A task that runs every period ticks. More specifically, this task reschedules itself to run again after period ticks every time it runs.
+     *
+     * @param inner  the task to run
+     * @param period the period in ticks
+     */
+    protected record CyclicTask(Runnable inner, int period) implements Runnable {
         @Override
         public void run() {
-            schedule(this, period);
+            SkyblockerMod.getInstance().scheduler.schedule(this, period);
             inner.run();
         }
     }
 
-    private record ScheduledTask(int schedule, Runnable inner) implements Comparable<ScheduledTask>, Runnable {
+    /**
+     * A task that runs at a specific tick, relative to {@link #currentTick}.
+     *
+     * @param inner    the task to run
+     * @param schedule the tick to run at
+     */
+    protected record ScheduledTask(Runnable inner, int schedule) implements Comparable<ScheduledTask>, Runnable {
         @Override
         public int compareTo(ScheduledTask o) {
             return schedule - o.schedule;