feat: add Rocket Swarm, Mortar, and BouncingProjectile weapon types

weapons/bouncing_projectile.gd

@@ -2,6 +2,7 @@ extends ExplosiveProjectile
 class_name BouncingProjectile
 
 var fuse_time: float = -1.0 # -1 means no fuse started yet
+var bounce_fuse_delay: float = 3.0 # How long to wait after bouncing
 var impact_detonate_time: float = 2.0
 var bounciness: float = 0.4
 var flight_time: float = 0.0
@@ -41,7 +42,7 @@ func _physics_process(delta: float) -> void:
 			
 			# Start the fuse if it hasn't started
 			if fuse_time < 0.0:
-				fuse_time = 3.0 # Explode 3 seconds after the first bounce
+				fuse_time = bounce_fuse_delay
 			
 			# If it hits an entity directly, still bounce, it's a heavy mortar shell!
 	else:

weapons/mortar.gd

@@ -68,7 +68,8 @@ func _spawn_custom_projectile(origin: Vector3, fire_dir: Vector3) -> void:
 	proj.owner_player = player
 	
 	# Mortar Bouncing logic
-	proj.fuse_time = 3.0 # Explodes 3 seconds after launch if it bounces
+	proj.fuse_time = -1.0 # Don't start ticking until it bounces
+	proj.bounce_fuse_delay = 3.0 # Explodes 3 seconds after first bounce
 	proj.impact_detonate_time = 2.0 # If flying > 2s, explode on impact instead
 	proj.bounciness = 0.4 # Heavy, loses momentum on bounce
 	

weapons/rocket_swarm.gd

@@ -147,7 +147,7 @@ func _spawn_custom_projectile(origin: Vector3, fire_dir: Vector3) -> void:
 	
 	# Logic
 	proj.weapon_source = self
-	proj.turn_speed = 12.0 # Faster turn radius so they can aggressively home in
+	proj.turn_speed = 4.0 # Slower turn radius so they sweep nicely
 	
 	proj.position = origin # Start at origin to spread outward around camera
 	proj.logical_source = origin