add re-fire delay for beta testing

src/core/configuration/Config.ts

@@ -139,6 +139,7 @@ export interface Config {
   safeFromPiratesCooldownMax(): number;
   defensePostRange(): number;
   SAMCooldown(): number;
+  samRefireDelayTicks(): number;
   SiloCooldown(): number;
   minDistanceBetweenPlayers(): number;
   defensePostDefenseBonus(): number;

src/core/configuration/DefaultConfig.ts

@@ -203,6 +203,11 @@ export class DefaultConfig implements Config {
   SAMCooldown(): number {
     return 75;
   }
+  samRefireDelayTicks(): number {
+    // Beta testing: adjust this constant to tune the delay before a SAM can
+    // refire at a nuke whose interceptor was destroyed. 0 = instant refire.
+    return 5;
+  }
   SiloCooldown(): number {
     return 75;
   }

src/core/execution/SAMMissileExecution.ts

@@ -17,6 +17,7 @@ export class SAMMissileExecution implements Execution {
   private SAMMissile: Unit | undefined;
   private mg: Game;
   private speed: number = 0;
+  private refireDelayRemaining: number | null = null;
 
   constructor(
     private spawn: TileRef,
@@ -39,8 +40,13 @@ export class SAMMissileExecution implements Execution {
       {},
     );
     if (!this.SAMMissile.isActive()) {
-      // Interceptor was destroyed (e.g. by nuke blast) — allow SAMs to re-target this nuke
+      // Interceptor was destroyed (e.g. by nuke blast) — allow SAMs to re-target this nuke after delay
       if (this.target.isActive()) {
+        this.refireDelayRemaining ??= this.mg.config().samRefireDelayTicks();
+        if (this.refireDelayRemaining > 0) {
+          this.refireDelayRemaining--;
+          return;
+        }
         this.target.setTargetedBySAM(false);
         // Notify defender their interceptor was destroyed
         this.mg.displayMessage(