Update the TileMap code in the RPG demo to work with Godot 4.2

2d/role_playing_game/Game.gd

@@ -6,26 +6,29 @@ extends Node
 const PLAYER_WIN = "res://dialogue/dialogue_data/player_won.json"
 const PLAYER_LOSE = "res://dialogue/dialogue_data/player_lose.json"
 
+@onready var combat_node = get_node(combat_screen);
+@onready var exploration_node = get_node(exploration_screen);
+
+
 func _ready():
-	exploration_screen = get_node(exploration_screen)
-	combat_screen = get_node(combat_screen)
-	combat_screen.combat_finished.connect(self._on_combat_finished)
+	combat_node.combat_finished.connect(self._on_combat_finished)
 	for n in $Exploration/Grid.get_children():
 		if not n.type == n.CellType.ACTOR:
 			continue
 		if not n.has_node("DialoguePlayer"):
 			continue
+		print(n.get_node(^"DialoguePlayer"))
 		n.get_node(^"DialoguePlayer").dialogue_finished.connect(self._on_opponent_dialogue_finished.bind(n))
-	remove_child(combat_screen)
+	remove_child(combat_node)
 
 
 func start_combat(combat_actors):
 	remove_child($Exploration)
 	$AnimationPlayer.play("fade")
 	await $AnimationPlayer.animation_finished
-	add_child(combat_screen)
-	combat_screen.show()
-	combat_screen.initialize(combat_actors)
+	add_child(combat_node)
+	combat_node.show()
+	combat_node.initialize(combat_actors)
 	$AnimationPlayer.play_backwards("fade")
 
 
@@ -38,17 +41,17 @@ func _on_opponent_dialogue_finished(opponent):
 
 
 func _on_combat_finished(winner, _loser):
-	remove_child(combat_screen)
+	remove_child(combat_node)
 	$AnimationPlayer.play_backwards("fade")
-	add_child(exploration_screen)
+	add_child(exploration_node)
 	var dialogue = load("res://dialogue/dialogue_player/DialoguePlayer.tscn").instantiate()
 	if winner.name == "Player":
 		dialogue.dialogue_file = PLAYER_WIN
 	else:
 		dialogue.dialogue_file = PLAYER_LOSE
 	await $AnimationPlayer.animation_finished
 	var player = $Exploration/Grid/Player
-	exploration_screen.get_node(^"DialogueUI").show_dialogue(player, dialogue)
-	combat_screen.clear_combat()
+	exploration_node.get_node(^"DialogueUI").show_dialogue(player, dialogue)
+	combat_node.clear_combat()
 	await dialogue.dialogue_finished
 	dialogue.queue_free()

2d/role_playing_game/Game.tscn

@@ -1,8 +1,8 @@
 [gd_scene load_steps=6 format=3 uid="uid://dlec1sr72eb72"]
 
 [ext_resource type="Script" path="res://Game.gd" id="1"]
-[ext_resource type="PackedScene" path="res://combat/Combat.tscn" id="2"]
-[ext_resource type="PackedScene" path="res://grid_movement/Exploration.tscn" id="3"]
+[ext_resource type="PackedScene" uid="uid://1a847rc1yude" path="res://combat/Combat.tscn" id="2"]
+[ext_resource type="PackedScene" uid="uid://343t45ghceqo" path="res://grid_movement/Exploration.tscn" id="3"]
 
 [sub_resource type="Animation" id="1"]
 length = 0.5

2d/role_playing_game/combat/Combat.tscn

@@ -1,12 +1,12 @@
-[gd_scene load_steps=7 format=2]
+[gd_scene load_steps=7 format=3 uid="uid://1a847rc1yude"]
 
-[ext_resource path="res://combat/Combat.gd" type="Script" id=1]
-[ext_resource path="res://combat/TurnQueue.gd" type="Script" id=2]
-[ext_resource path="res://theme/theme.tres" type="Theme" id=3]
-[ext_resource path="res://combat/interface/UI.gd" type="Script" id=4]
-[ext_resource path="res://combat/interface/Info.tscn" type="PackedScene" id=5]
+[ext_resource type="Script" path="res://combat/Combat.gd" id="1"]
+[ext_resource type="Script" path="res://combat/TurnQueue.gd" id="2"]
+[ext_resource type="Theme" uid="uid://dh2px4xx6k8ga" path="res://theme/theme.tres" id="3"]
+[ext_resource type="Script" path="res://combat/interface/UI.gd" id="4"]
+[ext_resource type="PackedScene" path="res://combat/interface/Info.tscn" id="5"]
 
-[sub_resource type="GDScript" id=1]
+[sub_resource type="GDScript" id="1"]
 script/source = "extends Node2D
 
 func add_combatant(new_combatant):
@@ -15,67 +15,58 @@ func add_combatant(new_combatant):
 "
 
 [node name="Combat" type="Node2D"]
-script = ExtResource( 1 )
+script = ExtResource("1")
 
 [node name="Combatants" type="Node2D" parent="."]
 position = Vector2(539, 275)
-script = SubResource( 1 )
+script = SubResource("1")
 
 [node name="TurnQueue" type="Node" parent="."]
-script = ExtResource( 2 )
+script = ExtResource("2")
 combatants_list = NodePath("../Combatants")
 
 [node name="UI" type="Control" parent="."]
+layout_mode = 3
+anchors_preset = 0
 offset_right = 1280.0
 offset_bottom = 720.0
-theme = ExtResource( 3 )
-script = ExtResource( 4 )
-__meta__ = {
-"_edit_use_anchors_": false
-}
-combatants_node = NodePath("../Combatants")
-info_scene = ExtResource( 5 )
+theme = ExtResource("3")
+script = ExtResource("4")
+info_scene = ExtResource("5")
 
 [node name="Combatants" type="HBoxContainer" parent="UI"]
+layout_mode = 0
 offset_top = 77.0
 offset_right = 1280.0
 offset_bottom = 328.0
-custom_constants/separation = 360
 
 [node name="Buttons" type="PanelContainer" parent="UI"]
+layout_mode = 0
 offset_left = 80.0
 offset_top = 376.0
 offset_right = 1200.0
 offset_bottom = 698.0
 
 [node name="GridContainer" type="GridContainer" parent="UI/Buttons"]
-offset_left = 90.0
-offset_top = 35.0
-offset_right = 1030.0
-offset_bottom = 277.0
+layout_mode = 2
 size_flags_horizontal = 3
 size_flags_vertical = 3
 columns = 2
 
 [node name="Attack" type="Button" parent="UI/Buttons/GridContainer"]
-offset_right = 468.0
-offset_bottom = 119.0
+layout_mode = 2
 size_flags_horizontal = 3
 size_flags_vertical = 3
 text = "Attack"
 
 [node name="Defend" type="Button" parent="UI/Buttons/GridContainer"]
-offset_left = 472.0
-offset_right = 940.0
-offset_bottom = 119.0
+layout_mode = 2
 size_flags_horizontal = 3
 size_flags_vertical = 3
 text = "Defend"
 
 [node name="Flee" type="Button" parent="UI/Buttons/GridContainer"]
-offset_top = 123.0
-offset_right = 468.0
-offset_bottom = 242.0
+layout_mode = 2
 size_flags_horizontal = 3
 size_flags_vertical = 3
 text = "Flee"

2d/role_playing_game/combat/TurnQueue.gd

@@ -1,23 +1,25 @@
 extends Node
 
+
 @export var combatants_list: NodePath
+
+@onready var combatants_list_node = get_node(combatants_list)
+
 var queue = []:
 	set(value):
 		# TODO: Manually copy the code from this method.
 		set_queue(value)
+
 var active_combatant = null:
 	set(value):
 		# TODO: Manually copy the code from this method.
 		_set_active_combatant(value)
 
 signal active_combatant_changed(active_combatant)
 
-func _ready():
-	combatants_list = get_node(combatants_list)
-
 
 func initialize():
-	set_queue(combatants_list.get_children())
+	set_queue(combatants_list_node.get_children())
 	play_turn()
 
 

2d/role_playing_game/combat/interface/UI.gd

@@ -1,10 +1,10 @@
 extends Control
 
-@export var combatants_node: NodePath
+
+@export var combatants_node_path: NodePath
 @export var info_scene: PackedScene
 
-func _ready():
-	combatants_node = get_node(combatants_node)
+@onready var combatants_node = get_node(combatants_node_path)
 
 
 func initialize():

2d/role_playing_game/dialogue/dialogue_player/DialoguePlayer.gd

@@ -1,6 +1,8 @@
 extends Node
 
-@export var dialogue_file: String, FILE, "*.json"
+
+@export_file("*.json") var dialogue_file
+
 var dialogue_keys = []
 var dialogue_name = ""
 var current = 0
@@ -34,9 +36,8 @@ func index_dialogue():
 
 
 func load_dialogue(file_path):
-	var file = File.new()
-	if file.file_exists(file_path):
-		file.open(file_path, file.READ)
+	if FileAccess.file_exists(file_path):
+		var file = FileAccess.open(file_path, FileAccess.READ)
 		var json = JSON.new()
 		json.parse(file.get_as_text())
 		var dialogue = json.get_data()

2d/role_playing_game/grid_movement/grid/Grid.gd

@@ -5,27 +5,26 @@ enum CellType { ACTOR, OBSTACLE, OBJECT }
 
 func _ready():
 	for child in get_children():
-		set_cellv(world_to_map(child.position), child.type)
-
+		set_cell(0, local_to_map(child.position), child.type)
 
 func get_cell_pawn(cell, type = CellType.ACTOR):
 	for node in get_children():
 		if node.type != type:
 			continue
-		if world_to_map(node.position) == cell:
+		if local_to_map(node.position) == cell:
 			return(node)
 
 
 func request_move(pawn, direction):
-	var cell_start = world_to_map(pawn.position)
+	var cell_start = local_to_map(pawn.position)
 	var cell_target = cell_start + direction
 
-	var cell_tile_id = get_cellv(cell_target)
+	var cell_tile_id = get_cell_source_id(0, cell_target)
 	match cell_tile_id:
 		-1:
-			set_cellv(cell_target, CellType.ACTOR)
-			set_cellv(cell_start, -1)
-			return map_to_world(cell_target) + cell_size / 2
+			set_cell(0, cell_target, CellType.ACTOR)
+			set_cell(0, cell_start, -1)
+			return map_to_local(cell_target) + Vector2(tile_set.tile_size.x / 2, tile_set.tile_size.y / 2)
 		CellType.OBJECT, CellType.ACTOR:
 			var target_pawn = get_cell_pawn(cell_target, cell_tile_id)
 			print("Cell %s contains %s" % [cell_target, target_pawn.name])

2d/role_playing_game/project.godot

@@ -14,10 +14,10 @@ config/name="JRPG Demo"
 config/description="This shows a method of creating grid-based movement with Godot
 and GDScript. It also includes a simple JRPG-style dialogue and
 battle system on top of it."
+config/tags=PackedStringArray("2d", "demo", "gui", "official", "tilemap")
 run/main_scene="res://Game.tscn"
-config/features=PackedStringArray("4.0")
+config/features=PackedStringArray("4.2")
 config/icon="res://icon.webp"
-config/tags=PackedStringArray("2d", "demo", "gui", "official", "tilemap")
 
 [display]