feat: implement weapon system, loadout manager, and specialized projectile behaviors with associated assets

weapons/bouncing_projectile.gd

@@ -0,0 +1,50 @@
+extends ExplosiveProjectile
+class_name BouncingProjectile
+
+var fuse_time: float = -1.0 # -1 means no fuse started yet
+var impact_detonate_time: float = 2.0
+var bounciness: float = 0.4
+var flight_time: float = 0.0
+
+func _physics_process(delta: float) -> void:
+	flight_time += delta
+	
+	if fuse_time > 0.0:
+		fuse_time -= delta
+		if fuse_time <= 0.0:
+			_explode(global_position)
+			queue_free()
+			return
+			
+	# Apply gravity drop if any
+	velocity.y -= drop_gravity * delta
+	
+	var movement = velocity * delta
+	
+	var space_state = get_world_3d().direct_space_state
+	var query = PhysicsRayQueryParameters3D.create(_previous_position, global_position + movement)
+	if owner_player:
+		query.exclude = [owner_player.get_rid()]
+		
+	var result = space_state.intersect_ray(query)
+	if result:
+		if flight_time > impact_detonate_time:
+			# Explode on impact if flying long enough
+			_on_hit(result)
+		else:
+			# Bounce
+			global_position = result.position + result.normal * 0.05
+			_previous_position = global_position
+			
+			# Reflect velocity
+			velocity = velocity.bounce(result.normal) * bounciness
+			
+			# Start the fuse if it hasn't started
+			if fuse_time < 0.0:
+				fuse_time = 3.0 # Explode 3 seconds after the first bounce
+			
+			# If it hits an entity directly, still bounce, it's a heavy mortar shell!
+	else:
+		global_position += movement
+		distance_traveled += movement.length()
+		_previous_position = global_position