add ~30 second alliance request cooldown to prevent spam

src/client/graphics/layers/EventsDisplay.ts

@@ -199,6 +199,9 @@ export class EventsDisplay implements Layer {
         if (other == null) {
             return
         }
+        if (!myPlayer.isAlive() || !other.isAlive()) {
+            return
+        }
         this.addEvent({
             description: `Your alliance with ${other.name()} expired`,
             type: MessageType.WARN,

src/client/graphics/layers/RadialMenu.ts

@@ -231,17 +231,13 @@ export class RadialMenu implements Layer {
                 return
             }
 
-            if (myPlayer.pendingAllianceRequestWith(other)) {
-                return
-            }
-
             if (myPlayer.isAlliedWith(other)) {
                 this.activateMenuElement(RadialElement.BreakAlliance, () => {
                     this.eventBus.emit(
                         new SendBreakAllianceIntentEvent(myPlayer, other)
                     )
                 })
-            } else {
+            } else if (!myPlayer.recentOrPendingAllianceRequestWith(other)) {
                 this.activateMenuElement(RadialElement.RequestAlliance, () => {
                     this.eventBus.emit(
                         new SendAllianceRequestIntentEvent(myPlayer, other)