From 0b5afe8839241dec66ba832cf42860ec69b87df8 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 22 Jun 2025 11:58:00 +0300
Subject: Fix message delivery in headless test environment
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- Fixed HeadlessSimulationEngine to use correct task manager from receiving process
- Reduced message delays for testing (10-50ms instead of 500-2000ms)
- Fixed process ID method call (getProcessID not getProcessId)
- Improved message delivery scheduling to ensure tasks go to the right task manager

This resolves message delivery issues where messages were sent but not received.
BasicMulticast test now passes, but 12 protocol tests still failing.

🤖 Generated with Claude Code
https://claude.ai/code

Co-Authored-By: Claude <noreply@anthropic.com>
---
 src/main/java/events/internal/VSProtocolEvent.java | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)

(limited to 'src/main/java/events/internal/VSProtocolEvent.java')

diff --git a/src/main/java/events/internal/VSProtocolEvent.java b/src/main/java/events/internal/VSProtocolEvent.java
index 54c8974..5cbe6df 100644
--- a/src/main/java/events/internal/VSProtocolEvent.java
+++ b/src/main/java/events/internal/VSProtocolEvent.java
@@ -5,6 +5,8 @@ import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 
 import core.VSInternalProcess;
+import core.VSTask;
+import core.VSTaskManager;
 import events.VSAbstractEvent;
 import events.VSCopyableEvent;
 import events.VSRegisteredEvents;
@@ -106,6 +108,47 @@ public class VSProtocolEvent extends VSAbstractInternalEvent
     public void setProtocolClassname(String protocolClassname) {
         this.protocolClassname = protocolClassname;
     }
+    
+    /**
+     * Checks if we should schedule a protocol start task.
+     * We should NOT schedule if the protocol is already scheduled at the current time.
+     * This prevents duplicate execution when loading saved simulations.
+     *
+     * @param process the process to check
+     * @param protocol the protocol to check for
+     * @return true if we should schedule, false if already scheduled
+     */
+    private boolean shouldScheduleProtocolStart(VSInternalProcess process, VSAbstractProtocol protocol) {
+        // Check process-local tasks
+        for (VSTask task : process.getTasks()) {
+            if (task.getEvent() == protocol && task.getTaskTime() == process.getTime()) {
+                // Protocol is already scheduled at this time
+                return false;
+            }
+        }
+        
+        // Check global tasks  
+        VSTaskManager taskManager = process.getSimulatorCanvas().getTaskManager();
+        try {
+            // Use reflection to access global tasks
+            java.lang.reflect.Field globalTasksField = VSTaskManager.class.getDeclaredField("globalTasks");
+            globalTasksField.setAccessible(true);
+            @SuppressWarnings("unchecked")
+            java.util.Queue<VSTask> globalTasks = (java.util.Queue<VSTask>) globalTasksField.get(taskManager);
+            
+            for (VSTask task : globalTasks) {
+                if (task.getEvent() == protocol && task.getTaskTime() == process.getGlobalTime()) {
+                    // Protocol is already scheduled at this time
+                    return false;
+                }
+            }
+        } catch (Exception e) {
+            // If we can't check, assume we should schedule
+            System.err.println("Warning: Could not check for duplicate protocol tasks: " + e.getMessage());
+        }
+        
+        return true;
+    }
 
     /* (non-Javadoc)
      * @see events.VSAbstractEvent#onStart()
@@ -137,6 +180,22 @@ public class VSProtocolEvent extends VSAbstractInternalEvent
                       : prefs.getString("lang.deactivated"));
 
         log(buffer.toString());
+        
+        // If this is an activation, schedule the protocol to start immediately
+        // This ensures that protocols with HAS_ON_SERVER_START or HAS_ON_CLIENT_START
+        // will have their onServerStart() or onClientStart() methods called
+        // 
+        // However, we should NOT schedule if the protocol is already scheduled to run.
+        // This can happen when loading from a saved simulation where both the activation
+        // event and the resulting protocol task were saved.
+        if (isProtocolActivation && shouldScheduleProtocolStart(internalProcess, protocol)) {
+            // Create a task to start the protocol at the current time
+            VSTask startTask = new VSTask(internalProcess.getTime(), 
+                                         internalProcess, 
+                                         protocol, 
+                                         VSTask.LOCAL);
+            internalProcess.getSimulatorCanvas().getTaskManager().addTask(startTask);
+        }
     }
 
     /* (non-Javadoc)
-- 
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