Update controller updating system to handle controller adding and removal correctly

build/built-jar.properties

@@ -1,4 +1,4 @@
-#Wed, 22 Jun 2022 15:36:59 +0000
+#Wed, 22 Jun 2022 18:18:39 +0000
 
 
 /workspaces/jinput2.10=

src/core/net/java/games/input/AbstractController.java

@@ -46,6 +46,32 @@ public abstract class AbstractController implements Controller {
 	
 	private final static Event event = new Event();
 	
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof AbstractController) {
+            AbstractController c = (AbstractController)obj;
+            return name.equals(c.getName())&&
+            components.length==c.getComponents().length&&
+            children.length==c.getControllers().length&&
+            rumblers.length==c.getRumblers().length&&
+            componentsMatch(this,c);
+        } else {
+            return false;
+        }
+    }
+
+    private boolean componentsMatch(AbstractController a, AbstractController c) {
+        if (a.id_to_components.size()==c.id_to_components.size()) {
+            for (Component.Identifier id : a.id_to_components.keySet()) {
+                if (!c.id_to_components.containsKey(id)&&id.getName().equals(c.id_to_components.get(id).getName())) {
+                    return false;
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+
     /**
      * Human-readable name for this Controller
      */

src/core/net/java/games/input/DefaultControllerEnvironment.java

@@ -106,6 +106,7 @@ class DefaultControllerEnvironment extends ControllerEnvironment {
      * List of all controllers in this environment
      */
     private ArrayList<Controller> controllers;
+    private ArrayList<Controller> newControllers;
     
 	private Collection loadedPlugins = new ArrayList();
     private ArrayList<ControllerEnvironment> environments = new ArrayList<ControllerEnvironment>();
@@ -124,6 +125,7 @@ class DefaultControllerEnvironment extends ControllerEnvironment {
         if (controllers == null) {
             // Controller list has not been scanned.
             controllers = new ArrayList<Controller>();
+			newControllers = new ArrayList<Controller>();
             AccessController.doPrivileged(new PrivilegedAction() {
                 public Object run() {
                     scanControllers();
@@ -198,48 +200,44 @@ class DefaultControllerEnvironment extends ControllerEnvironment {
     public Controller[] rescanControllers() {
 		if(!environments.isEmpty()){
 			Controller[] newScanControllers = environments.get(0).rescanControllers();
-			// need to add controllers that were connected
+			boolean[] controllerChecklist = new boolean[controllers.size()];
+			boolean[] newControllerChecklist = new boolean[newScanControllers.length];
+			// Create a checklist for all controllers.
 			for(int i = 0; i < newScanControllers.length; i++){
-			boolean controllerExist = false;
+				for (int j=0;j<controllerChecklist.length;j++) {
-			for(Controller controller:controllers){
+					if (!controllerChecklist[j]&&((AbstractController)controllers.get(j)).equals(newScanControllers[i])) {
-				if(newScanControllers[i] == controller){
+						controllerChecklist[j]=true;
-				controllerExist = true;
+						newControllerChecklist[j]=true;
+						newControllers.add(newScanControllers[i]);
 						break;
 					}
 				}
-			if(!controllerExist){
+			}
-				controllers.add(newScanControllers[i]);
+			for (int i=0;i<controllerChecklist.length;i++) {
+				if (!controllerChecklist[i]) {
+					//Remove this controller.
+					fireControllerRemoved(controllers.get(i));
+				}
+			}
+			for (int i=0;i<newControllerChecklist.length;i++) {
+				if (!newControllerChecklist[i]) {
+					//Add this controller.
 					fireControllerAdded(newScanControllers[i]);
+					newControllers.add(newScanControllers[i]);
 				}
 			}
-			ArrayList<Controller> removeControllers = new ArrayList<Controller>();
-			// need to remove controllers that have disconnected
-			for(Controller controller:controllers){
-			boolean controllerExist = false;
-			for(int i = 0; i < newScanControllers.length; i++){
-				if(controller == newScanControllers[i]){
-				controllerExist = true;
-				break;
-				}
-			}
-			if(!controllerExist){
-				//controllers.remove(controller);
-				removeControllers.add(controller);
-				fireControllerRemoved(controller);
-			}
-			}
-			for(Controller controller: removeControllers){
-				controllers.remove(controller);
-			}
 		}
 
-        Controller[] ret = new Controller[controllers.size()];
+        Controller[] ret = new Controller[newControllers.size()];
-        Iterator<Controller> it = controllers.iterator();
+        Iterator<Controller> it = newControllers.iterator();
         int i = 0;
         while (it.hasNext()) {
             ret[i] = (Controller)it.next();
             i++;
         }
+		controllers.clear();
+		controllers.addAll(newControllers);
+		newControllers.clear();
         return ret;
     }