spawn behavior

main.tscn

@@ -53,6 +53,7 @@ shape = SubResource("BoxShape_seabed")
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 3, 0)
 
 [node name="CameraRig" type="Node3D" parent="." unique_id=2139913829 node_paths=PackedStringArray("cam") groups=["shift_with_origin"]]
+physics_interpolation_mode = 2
 transform = Transform3D(1, 0, 0, 0, 0.9396926, 0.34202012, 0, -0.34202012, 0.9396926, 0, 0, 0)
 script = ExtResource("4_1bvp3")
 cam = NodePath("PlayerCamera")

project.godot

@@ -60,6 +60,16 @@ fire={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":49,"key_label":0,"unicode":49,"location":0,"echo":false,"script":null)
 ]
 }
+debug_spawn_boat={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194333,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+debug_possess_next={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194334,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
 
 [layer_names]
 

scripts/boat.gd

@@ -7,27 +7,41 @@ extends FloatingBody
 @export var throttle_response := 1.5    # how fast the engine spools up/down
 @export var rudder_strength := 2.5      # turning torque at speed
 @export var keel_grip := 3.0            # resistance to sliding sideways
-@export var loadout: Dictionary[StringName, WeaponDef] = {}
+@export var loadout: Dictionary[StringName, WeaponDef] = {} # WeaponSlot Name -> WeaponDef
+@export var weapon_groups: Dictionary[int, Array] = {}  # group id -> slot names; group 0 is auto-built (all slots), editor value ignored
 
 var desired_throttle := 0.0		# move_toward target for actual throttle
 var steer_input := 0.0
 var throttle := 0.0				# current throttle state of ship
 var _slots: Array[WeaponSlot] = []
+var _slots_by_name: Dictionary[StringName, WeaponSlot] = {}
+var fire_intents: Dictionary[int, bool] = {}  # written by controllers, like steer_input
 
 func _ready() -> void:
 	super()
+	add_to_group(&"boats")
 	for child in get_children():
 		if child is WeaponSlot:
 			_slots.append(child)
+			_slots_by_name[child.name] = child
 			var def: WeaponDef = loadout.get(child.name)
 			if def != null:
 				child.mount(def)
 
+	# Weapon group 0 should always be all weapons, regardless
+	# TODO: If ever weapon slots would dynamically be added during a scene, change
+	var all_names: Array = []
+	for slot in _slots:
+		all_names.append(slot.name)
+	weapon_groups[0] = all_names
+
 func _physics_process(delta: float) -> void:
 	super(delta)
 	
 	throttle = move_toward(throttle, desired_throttle, throttle_response * delta)
 
+	_process_fire()
+
 	if submerged_ratio <= 0.0:
 		return   # airborne: no thrust, no rudder, no keel
 
@@ -51,8 +65,12 @@ func _physics_process(delta: float) -> void:
 	right = right.normalized()
 	var lateral_speed := linear_velocity.dot(right)
 	apply_central_force(-right * lateral_speed * keel_grip * mass * submerged_ratio)
-	
+
-func fire_weapons() -> void:
+func _process_fire() -> void:
-	for slot in _slots:
+	for group_id in weapon_groups:
-		if slot.weapon != null:
+		if not fire_intents.get(group_id, false):
-			slot.weapon.try_fire()
+			continue
+		for slot_name in weapon_groups[group_id]:
+			var slot: WeaponSlot = _slots_by_name.get(slot_name)
+			if slot != null and slot.weapon != null:
+				slot.weapon.try_fire()

scripts/game.gd

@@ -1,6 +1,20 @@
 # scripts/game.gd — autoloaded as "Game"
 extends Node
 
+const BOAT_SCENE := preload("res://boat.tscn")
+
 func _unhandled_input(event: InputEvent) -> void:
 	if event.is_action_pressed("restart"):
 		get_tree().reload_current_scene()
+	if event.is_action_pressed(&"debug_spawn_boat"):
+		_debug_spawn_boat()
+		
+func _debug_spawn_boat() -> void:
+	var focus := get_tree().get_first_node_in_group(&"boats") as Node3D
+	var boat: Boat = BOAT_SCENE.instantiate()
+
+	if focus != null:
+		boat.position = focus.global_position + focus.global_basis.x * 10.0 + Vector3.UP * 2.0
+	else:
+		boat.position = Vector3(0, 3, 0)
+	get_tree().current_scene.add_child(boat, true)

scripts/player_controller.gd

@@ -6,6 +6,7 @@ extends Node
 		if current_controlled != null and current_controlled != value:
 			current_controlled.desired_throttle = 0.0
 			current_controlled.steer_input = 0.0
+			current_controlled.fire_intents.clear()
 		current_controlled = value
 		if is_node_ready():
 			if current_controlled != null:
@@ -56,9 +57,12 @@ func _process(delta: float) -> void:
 	current_controlled.desired_throttle = desired_throttle
 	current_controlled.steer_input = steer_input
 	
-	if Input.is_action_pressed("fire"):
+	current_controlled.fire_intents[0] = Input.is_action_pressed("fire")
-		current_controlled.fire_weapons()
 	
+func _unhandled_input(event: InputEvent) -> void:
+	if event.is_action_pressed(&"debug_possess_next"):
+		_possess_next()
+
 func _possess() -> void:
 	if camera_rig != null:
 		camera_rig.target = current_controlled
@@ -66,3 +70,11 @@ func _possess() -> void:
 		world_manager.focus = current_controlled
 	if hud != null:
 		hud.boat = current_controlled
+		
+func _possess_next() -> void:
+	var boats := get_tree().get_nodes_in_group(&"boats")
+	if boats.is_empty():
+		current_controlled = null
+		return
+	var idx := boats.find(current_controlled)
+	current_controlled = boats[(idx + 1) % boats.size()]