fix playtime minutes requirement and add world requirement

src/main/java/sh/okx/rankup/requirements/requirement/PlaytimeMinutesRequirement.java

@@ -26,12 +26,12 @@ public class PlaytimeMinutesRequirement extends Requirement {
 
   @Override
   public boolean check(Player player) {
-    return player.getStatistic(playOneTick) / TICKS_PER_MINUTE >= getValueDouble();
+    return getRemaining(player) <= 0;
   }
 
   @Override
   public double getRemaining(Player player) {
-    return Math.max(0, getValueDouble() - (player.getStatistic(playOneTick) * TICKS_PER_MINUTE));
+    return Math.max(0, getValueDouble() - (player.getStatistic(playOneTick) / TICKS_PER_MINUTE));
   }
 
   @Override

src/main/java/sh/okx/rankup/requirements/requirement/WorldRequirement.java

@@ -0,0 +1,35 @@
+package sh.okx.rankup.requirements.requirement;
+
+import org.bukkit.entity.Player;
+import sh.okx.rankup.Rankup;
+import sh.okx.rankup.requirements.Requirement;
+
+public class WorldRequirement extends Requirement {
+  public WorldRequirement(Rankup plugin) {
+    super(plugin, "world");
+  }
+
+  protected WorldRequirement(Requirement clone) {
+    super(clone);
+  }
+
+  @Override
+  public boolean check(Player player) {
+    for (String world : getValueString().split(" ")) {
+      if (player.getWorld().getName().equalsIgnoreCase(world)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  @Override
+  public double getRemaining(Player player) {
+    return check(player) ? 0 : 1;
+  }
+
+  @Override
+  public Requirement clone() {
+    return new WorldRequirement(this);
+  }
+}