X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=era.mi%2Fsrc%2Fera%2Fmi%2Flogic%2Ftimeline%2FTimeline.java;h=88aa1976fb05b263de531b9951cf9b5a8023b80c;hb=23822f3ac39fa0ebd7e74b8c5fee2cd40415b05c;hp=8b3c3255416c65f2e36cba51653ddbdf46e169d1;hpb=74206ee98e42a6228aed448f45c49cbdab98253a;p=Mograsim.git

diff --git a/era.mi/src/era/mi/logic/timeline/Timeline.java b/era.mi/src/era/mi/logic/timeline/Timeline.java
index 8b3c3255..88aa1976 100644
--- a/era.mi/src/era/mi/logic/timeline/Timeline.java
+++ b/era.mi/src/era/mi/logic/timeline/Timeline.java
@@ -1,9 +1,13 @@
 package era.mi.logic.timeline;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.PriorityQueue;
+import java.util.function.Consumer;
 
 /**
  * Orders Events by the time they are due to be executed. Can execute Events individually.
+ * 
  * @author Fabian Stemmler
  *
  */
@@ -11,17 +15,16 @@ public class Timeline
 {
 	private PriorityQueue<InnerEvent> events;
 	private long currentTime = 0;
-	
+
+	private final List<Consumer<TimelineEvent>> eventAddedListener;
+
 	public Timeline(int initCapacity)
 	{
-		events = new PriorityQueue<InnerEvent>(initCapacity, (a, b) -> {
-			long difference = a.getTiming() - b.getTiming();
-			if(difference == 0)
-				return 0;
-			return difference < 0 ? -1 : 1;
-		});
+		events = new PriorityQueue<InnerEvent>(initCapacity);
+
+		eventAddedListener = new ArrayList<>();
 	}
-	
+
 	public boolean hasNext()
 	{
 		return !events.isEmpty();
@@ -29,25 +32,22 @@ public class Timeline
 
 	public void executeNext()
 	{
-		InnerEvent first = events.poll();
-		currentTime = first.getTiming();
-		first.run();
+		InnerEvent first = events.peek();
+		if (first != null)
+			executeUpTo(first.getTiming(), -1);
 	}
-	
+
 	public void executeAll()
 	{
 		while (hasNext())
 			executeNext();
 	}
-	
+
 	/**
-	 * Executes all events up to a given simulation timestamp. The simulation
-	 * process can be constrained by a real world timestamp.
+	 * Executes all events up to a given simulation timestamp. The simulation process can be constrained by a real world timestamp.
 	 * 
-	 * @param timestamp  the simulation timestamp up to which the events will be
-	 *                   processed
-	 * @param stopMillis the System.currentTimeMillis() when simulation definitely
-	 *                   needs to stop.
+	 * @param timestamp  the simulation timestamp up to which the events will be processed
+	 * @param stopMillis the System.currentTimeMillis() when simulation definitely needs to stop. A value of -1 means no timeout.
 	 * @return if it was possible to fulfil the goal in the given real world time.
 	 * @author Christian Femers
 	 */
@@ -79,73 +79,101 @@ public class Timeline
 	{
 		return currentTime;
 	}
-	
+
+	public long nextEventTime()
+	{
+		if (!hasNext())
+			return -1;
+		return events.peek().getTiming();
+	}
+
 	public void reset()
 	{
 		events.clear();
 		currentTime = 0;
 	}
-	
+
+	public void addEventAddedListener(Consumer<TimelineEvent> listener)
+	{
+		eventAddedListener.add(listener);
+	}
+
+	public void removeEventAddedListener(Consumer<TimelineEvent> listener)
+	{
+		eventAddedListener.remove(listener);
+	}
+
 	/**
 	 * Adds an Event to the {@link Timeline}
-	 * @param function The {@link TimelineEventHandler} that will be executed, when the {@link InnerEvent} occurs on the timeline.
+	 * 
+	 * @param function       The {@link TimelineEventHandler} that will be executed, when the {@link InnerEvent} occurs on the timeline.
 	 * @param relativeTiming The amount of MI ticks in which the {@link InnerEvent} is called, starting from the current time.
 	 */
 	public void addEvent(TimelineEventHandler function, int relativeTiming)
 	{
 		long timing = currentTime + relativeTiming;
-		events.add(new InnerEvent(function, new TimelineEvent(timing), timing));
+		TimelineEvent event = new TimelineEvent(timing);
+		events.add(new InnerEvent(function, event));
+		eventAddedListener.forEach(l -> l.accept(event));
 	}
-	
-	private class InnerEvent
-	{
 
-		private final long timing;
+	private class InnerEvent implements Runnable, Comparable<InnerEvent>
+	{
 		private final TimelineEventHandler function;
 		private final TimelineEvent event;
-		
+
 		/**
 		 * Creates an {@link InnerEvent}
+		 * 
 		 * @param function {@link TimelineEventHandler} to be executed when the {@link InnerEvent} occurs
-		 * @param timing Point in the MI simulation {@link Timeline}, at which the {@link InnerEvent} is executed;
+		 * @param timing   Point in the MI simulation {@link Timeline}, at which the {@link InnerEvent} is executed;
 		 */
-		InnerEvent(TimelineEventHandler function, TimelineEvent event, long timing)
+		InnerEvent(TimelineEventHandler function, TimelineEvent event)
 		{
 			this.function = function;
 			this.event = event;
-			this.timing = timing;
 		}
 
 		public long getTiming()
 		{
-			return timing;
+			return event.getTiming();
 		}
-		
+
+		@Override
 		public void run()
 		{
 			function.handle(event);
 		}
-		
+
 		@Override
 		public String toString()
 		{
 			return event.toString();
 		}
+
+		@Override
+		public int compareTo(InnerEvent o)
+		{
+			long difference = getTiming() - o.getTiming();
+			if (difference == 0)
+				return 0;
+			return difference < 0 ? -1 : 1;
+		}
 	}
-	
+
 	@Override
 	public String toString()
 	{
 		return "simulation time: " + currentTime + ", " + events.toString();
 	}
-	
+
 	public static long toNanoseconds(long ticks)
 	{
-		return ticks; //TODO: Alter this when it has been determined how ticks should relate to real time.
+		return ticks; // TODO: Alter this when it has been determined how ticks should relate to real time.
 	}
-	
+
 	public enum ExecutionResult
 	{
-		NOTHING_DONE, DONE_IN_TIME, RAN_OUT_OF_TIME 
+		NOTHING_DONE, DONE_IN_TIME, RAN_OUT_OF_TIME
 	}
 }
\ No newline at end of file