Godot4.2编辑器插件开发实战打造可视化网格设计工具在游戏开发中快速创建和调整2D网格是关卡设计、UI布局等场景中的常见需求。虽然Godot内置了TileMap节点但当我们只需要基础的网格功能时它显得过于复杂。本文将带你深入Godot4.2的编辑器插件开发将一个简单的参数化网格节点升级为可直接在编辑器视口中拖拽绘制的可视化工具。1. 从自定义节点到编辑器插件1.1 基础网格节点的重构我们先从原始的自定义网格节点开始为其添加必要的编辑器集成功能tool class_name EditableGrid2D extends Node2D ## 网格尺寸列数,行数 export var grid_size : Vector2i(10, 10): set(val): grid_size val update_configuration_warnings() queue_redraw() ## 单元格大小像素 export var cell_size : Vector2i(32, 32): set(val): cell_size val update_configuration_warnings() queue_redraw() ## 网格线颜色 export var line_color : Color.YELLOW: set(val): line_color val queue_redraw() ## 线宽 export var line_width : 1.0: set(val): line_width val queue_redraw() func _get_configuration_warnings(): if cell_size.x 0 or cell_size.y 0: return [单元格尺寸必须大于零] if grid_size.x 0 or grid_size.y 0: return [网格尺寸必须大于零] return []关键改进添加了_get_configuration_warnings()方法在参数非法时显示警告所有导出变量都触发配置更新和重绘使用更明确的类名EditableGrid2D表示其可编辑特性1.2 编辑器插件基础框架创建新的脚本grid_plugin.gdtool extends EditorPlugin var grid_tool preload(res://addons/grid_tool/grid_tool.tscn) func _enter_tree(): # 注册自定义节点 add_custom_type(EditableGrid2D, Node2D, preload(editable_grid_2d.gd), preload(grid_icon.svg)) # 添加工具栏按钮 add_tool_menu_item(创建网格工具, _create_grid_tool) func _exit_tree(): remove_custom_type(EditableGrid2D) remove_tool_menu_item(创建网格工具) func _create_grid_tool(): var grid grid_tool.instantiate() get_editor_interface().get_edited_scene_root().add_child(grid) grid.owner get_editor_interface().get_edited_scene_root()2. 实现可视化网格绘制工具2.1 创建可拖拽的网格工具我们需要创建一个继承自Control的组件用于在2D视口中直接绘制网格tool class_name GridPainter extends Control ## 当前绘制的网格实例 var current_grid: EditableGrid2D ## 是否正在绘制 var is_drawing : false func _ready(): mouse_default_cursor_shape Control.CURSOR_CROSS func _input(event): if event is InputEventMouseButton and event.button_index MOUSE_BUTTON_LEFT: is_drawing event.pressed if is_drawing: _start_new_grid() queue_redraw() if event is InputEventMouseMotion and is_drawing: _update_grid_size() queue_redraw() func _start_new_grid(): current_grid EditableGrid2D.new() current_grid.position get_local_mouse_position() add_child(current_grid) current_grid.owner get_tree().edited_scene_root func _update_grid_size(): var start_pos current_grid.position var end_pos get_local_mouse_position() var size (end_pos - start_pos).abs() current_grid.grid_size Vector2i( ceil(size.x / current_grid.cell_size.x), ceil(size.y / current_grid.cell_size.y) )2.2 集成到编辑器工作流修改插件脚本添加网格绘制工具var grid_painter preload(grid_painter.gd) var painter_instance: GridPainter func _enter_tree(): # ...之前的注册代码... # 创建并添加网格绘制工具 painter_instance grid_painter.new() get_editor_interface().get_editor_main_screen().add_child(painter_instance) painter_instance.hide() func _make_visible(visible): if painter_instance: painter_instance.visible visible func _has_main_screen(): return true func _get_plugin_name(): return Grid Tool func _get_plugin_icon(): return preload(grid_icon.svg)3. 高级功能实现3.1 自定义资源与预设保存为了让网格配置可复用我们创建自定义资源类型tool class_name GridPreset extends Resource export var grid_size : Vector2i(10, 10) export var cell_size : Vector2i(32, 32) export var line_color : Color.YELLOW export var line_width : 1.0 func apply_to(grid: EditableGrid2D): grid.grid_size grid_size grid.cell_size cell_size grid.line_color line_color grid.line_width line_width在插件中注册资源类型func _enter_tree(): # ...其他注册代码... add_custom_type(GridPreset, Resource, preload(grid_preset.gd), preload(preset_icon.svg))3.2 属性面板扩展为网格节点添加自定义属性编辑器var grid_inspector preload(grid_inspector.gd) var inspector_plugin func _enter_tree(): # ...其他代码... inspector_plugin grid_inspector.new() add_inspector_plugin(inspector_plugin) func _exit_tree(): remove_inspector_plugin(inspector_plugin)创建grid_inspector.gdtool extends EditorInspectorPlugin func _can_handle(object): return object is EditableGrid2D func _parse_property(object, type, name, hint_type, hint_string, usage_flags, wide): if name cell_size: var editor EditorProperty.new() editor.setup(cell_size, Cell Size, PROPERTY_HINT_NONE, , PROPERTY_USAGE_DEFAULT) add_property_editor(cell_size, editor) return true return false4. 实际应用场景4.1 关卡设计工作流通过工具栏按钮激活网格工具在2D视口中拖拽创建基础网格使用属性面板调整网格参数右键保存为预设供后续复用基于网格对齐其他关卡元素4.2 UI布局辅助func setup_ui_grid(): var grid EditableGrid2D.new() grid.grid_size Vector2i(12, 8) # 常见UI网格布局 grid.cell_size Vector2i(64, 64) # 标准控件尺寸 grid.line_color Color(1,1,1,0.2) # 半透明辅助线 add_child(grid) # 将UI控件对齐到网格 for control in get_children(): if control is Control: control.position grid.get_cell_center( grid.to_cell_pos(control.position) )4.3 与TileMap的协作虽然我们创建了轻量级网格但仍可与TileMap配合使用func generate_tilemap_from_grid(grid: EditableGrid2D, tilemap: TileMap): var used_cells [] for x in grid.grid_size.x: for y in grid.grid_size.y: var cell_pos Vector2i(x, y) var world_pos grid.get_cell_center(cell_pos) var tile_pos tilemap.local_to_map(world_pos) used_cells.append(tile_pos) tilemap.set_used_cells(0, used_cells)5. 性能优化与调试技巧5.1 绘制优化技术对于大型网格可以采用以下优化func _draw(): if not Engine.is_editor_hint() and not visible: return # 只绘制视口可见区域的网格 var viewport_rect get_viewport_rect() var start_cell to_cell_pos(viewport_rect.position) var end_cell to_cell_pos(viewport_rect.end) for x in range(start_cell.x, end_cell.x 1): for y in range(start_cell.y, end_cell.y 1): if x 0 and y 0 and x grid_size.x and y grid_size.y: var rect get_cell_rect(Vector2i(x, y)) draw_rect(rect, line_color, false, line_width)5.2 编辑器插件调试调试编辑器插件时注意使用print()输出会显示在编辑器输出面板修改插件代码后需要重新启用插件才能生效可以通过get_editor_interface()获取各种编辑器功能func _log_editor_info(): var editor get_editor_interface() print(当前场景: , editor.get_edited_scene_root().name) print(选中对象: , editor.get_selection().get_selected_nodes())6. 扩展思路与进阶方向6.1 支持多种网格样式在自定义资源中添加样式配置enum GridStyle { LINES, DOTS, CHECKER } export var style: GridStyle GridStyle.LINES export var dot_radius : 2.0 export var checker_color1 : Color(1,1,1,0.1) export var checker_color2 : Color(1,1,1,0.05) func _draw(): match style: GridStyle.LINES: _draw_line_style() GridStyle.DOTS: _draw_dot_style() GridStyle.CHECKER: _draw_checker_style()6.2 3D网格扩展同样的原理可以应用于3D空间tool class_name EditableGrid3D extends Node3D export var grid_size : Vector3i(10, 10, 10) export var cell_size : Vector3(1.0, 1.0, 1.0) export var line_color : Color.YELLOW export var line_width : 0.05 func _ready(): var immediate_mesh ImmediateMesh.new() var material ORMMaterial3D.new() material.shading_mode BaseMaterial3D.SHADING_MODE_UNSHADED material.albedo_color line_color var mesh_instance MeshInstance3D.new() mesh_instance.mesh immediate_mesh mesh_instance.cast_shadow GeometryInstance3D.SHADOW_CASTING_SETTING_OFF add_child(mesh_instance) immediate_mesh.surface_begin(Mesh.PRIMITIVE_LINES) # 绘制3D网格线... immediate_mesh.surface_end()6.3 与其他编辑器功能集成将网格工具与Godot的其他编辑器功能结合# 在网格上右键添加预设节点 func _register_grid_context_menu(): add_tool_submenu_item(网格工具, grid_context_menu) var grid_context_menu PopupMenu.new() grid_context_menu.add_item(在当前位置添加节点) grid_context_menu.add_item(沿网格路径创建) grid_context_menu.id_pressed.connect(func(id): match id: 0: _add_node_at_cursor() 1: _create_path_along_grid() )
Godot4.2编辑器插件开发入门：把你的自定义网格节点变成可拖拽的‘可视化工具’
发布时间：2026/6/1 5:31:17
Godot4.2编辑器插件开发实战打造可视化网格设计工具在游戏开发中快速创建和调整2D网格是关卡设计、UI布局等场景中的常见需求。虽然Godot内置了TileMap节点但当我们只需要基础的网格功能时它显得过于复杂。本文将带你深入Godot4.2的编辑器插件开发将一个简单的参数化网格节点升级为可直接在编辑器视口中拖拽绘制的可视化工具。1. 从自定义节点到编辑器插件1.1 基础网格节点的重构我们先从原始的自定义网格节点开始为其添加必要的编辑器集成功能tool class_name EditableGrid2D extends Node2D ## 网格尺寸列数,行数 export var grid_size : Vector2i(10, 10): set(val): grid_size val update_configuration_warnings() queue_redraw() ## 单元格大小像素 export var cell_size : Vector2i(32, 32): set(val): cell_size val update_configuration_warnings() queue_redraw() ## 网格线颜色 export var line_color : Color.YELLOW: set(val): line_color val queue_redraw() ## 线宽 export var line_width : 1.0: set(val): line_width val queue_redraw() func _get_configuration_warnings(): if cell_size.x 0 or cell_size.y 0: return [单元格尺寸必须大于零] if grid_size.x 0 or grid_size.y 0: return [网格尺寸必须大于零] return []关键改进添加了_get_configuration_warnings()方法在参数非法时显示警告所有导出变量都触发配置更新和重绘使用更明确的类名EditableGrid2D表示其可编辑特性1.2 编辑器插件基础框架创建新的脚本grid_plugin.gdtool extends EditorPlugin var grid_tool preload(res://addons/grid_tool/grid_tool.tscn) func _enter_tree(): # 注册自定义节点 add_custom_type(EditableGrid2D, Node2D, preload(editable_grid_2d.gd), preload(grid_icon.svg)) # 添加工具栏按钮 add_tool_menu_item(创建网格工具, _create_grid_tool) func _exit_tree(): remove_custom_type(EditableGrid2D) remove_tool_menu_item(创建网格工具) func _create_grid_tool(): var grid grid_tool.instantiate() get_editor_interface().get_edited_scene_root().add_child(grid) grid.owner get_editor_interface().get_edited_scene_root()2. 实现可视化网格绘制工具2.1 创建可拖拽的网格工具我们需要创建一个继承自Control的组件用于在2D视口中直接绘制网格tool class_name GridPainter extends Control ## 当前绘制的网格实例 var current_grid: EditableGrid2D ## 是否正在绘制 var is_drawing : false func _ready(): mouse_default_cursor_shape Control.CURSOR_CROSS func _input(event): if event is InputEventMouseButton and event.button_index MOUSE_BUTTON_LEFT: is_drawing event.pressed if is_drawing: _start_new_grid() queue_redraw() if event is InputEventMouseMotion and is_drawing: _update_grid_size() queue_redraw() func _start_new_grid(): current_grid EditableGrid2D.new() current_grid.position get_local_mouse_position() add_child(current_grid) current_grid.owner get_tree().edited_scene_root func _update_grid_size(): var start_pos current_grid.position var end_pos get_local_mouse_position() var size (end_pos - start_pos).abs() current_grid.grid_size Vector2i( ceil(size.x / current_grid.cell_size.x), ceil(size.y / current_grid.cell_size.y) )2.2 集成到编辑器工作流修改插件脚本添加网格绘制工具var grid_painter preload(grid_painter.gd) var painter_instance: GridPainter func _enter_tree(): # ...之前的注册代码... # 创建并添加网格绘制工具 painter_instance grid_painter.new() get_editor_interface().get_editor_main_screen().add_child(painter_instance) painter_instance.hide() func _make_visible(visible): if painter_instance: painter_instance.visible visible func _has_main_screen(): return true func _get_plugin_name(): return Grid Tool func _get_plugin_icon(): return preload(grid_icon.svg)3. 高级功能实现3.1 自定义资源与预设保存为了让网格配置可复用我们创建自定义资源类型tool class_name GridPreset extends Resource export var grid_size : Vector2i(10, 10) export var cell_size : Vector2i(32, 32) export var line_color : Color.YELLOW export var line_width : 1.0 func apply_to(grid: EditableGrid2D): grid.grid_size grid_size grid.cell_size cell_size grid.line_color line_color grid.line_width line_width在插件中注册资源类型func _enter_tree(): # ...其他注册代码... add_custom_type(GridPreset, Resource, preload(grid_preset.gd), preload(preset_icon.svg))3.2 属性面板扩展为网格节点添加自定义属性编辑器var grid_inspector preload(grid_inspector.gd) var inspector_plugin func _enter_tree(): # ...其他代码... inspector_plugin grid_inspector.new() add_inspector_plugin(inspector_plugin) func _exit_tree(): remove_inspector_plugin(inspector_plugin)创建grid_inspector.gdtool extends EditorInspectorPlugin func _can_handle(object): return object is EditableGrid2D func _parse_property(object, type, name, hint_type, hint_string, usage_flags, wide): if name cell_size: var editor EditorProperty.new() editor.setup(cell_size, Cell Size, PROPERTY_HINT_NONE, , PROPERTY_USAGE_DEFAULT) add_property_editor(cell_size, editor) return true return false4. 实际应用场景4.1 关卡设计工作流通过工具栏按钮激活网格工具在2D视口中拖拽创建基础网格使用属性面板调整网格参数右键保存为预设供后续复用基于网格对齐其他关卡元素4.2 UI布局辅助func setup_ui_grid(): var grid EditableGrid2D.new() grid.grid_size Vector2i(12, 8) # 常见UI网格布局 grid.cell_size Vector2i(64, 64) # 标准控件尺寸 grid.line_color Color(1,1,1,0.2) # 半透明辅助线 add_child(grid) # 将UI控件对齐到网格 for control in get_children(): if control is Control: control.position grid.get_cell_center( grid.to_cell_pos(control.position) )4.3 与TileMap的协作虽然我们创建了轻量级网格但仍可与TileMap配合使用func generate_tilemap_from_grid(grid: EditableGrid2D, tilemap: TileMap): var used_cells [] for x in grid.grid_size.x: for y in grid.grid_size.y: var cell_pos Vector2i(x, y) var world_pos grid.get_cell_center(cell_pos) var tile_pos tilemap.local_to_map(world_pos) used_cells.append(tile_pos) tilemap.set_used_cells(0, used_cells)5. 性能优化与调试技巧5.1 绘制优化技术对于大型网格可以采用以下优化func _draw(): if not Engine.is_editor_hint() and not visible: return # 只绘制视口可见区域的网格 var viewport_rect get_viewport_rect() var start_cell to_cell_pos(viewport_rect.position) var end_cell to_cell_pos(viewport_rect.end) for x in range(start_cell.x, end_cell.x 1): for y in range(start_cell.y, end_cell.y 1): if x 0 and y 0 and x grid_size.x and y grid_size.y: var rect get_cell_rect(Vector2i(x, y)) draw_rect(rect, line_color, false, line_width)5.2 编辑器插件调试调试编辑器插件时注意使用print()输出会显示在编辑器输出面板修改插件代码后需要重新启用插件才能生效可以通过get_editor_interface()获取各种编辑器功能func _log_editor_info(): var editor get_editor_interface() print(当前场景: , editor.get_edited_scene_root().name) print(选中对象: , editor.get_selection().get_selected_nodes())6. 扩展思路与进阶方向6.1 支持多种网格样式在自定义资源中添加样式配置enum GridStyle { LINES, DOTS, CHECKER } export var style: GridStyle GridStyle.LINES export var dot_radius : 2.0 export var checker_color1 : Color(1,1,1,0.1) export var checker_color2 : Color(1,1,1,0.05) func _draw(): match style: GridStyle.LINES: _draw_line_style() GridStyle.DOTS: _draw_dot_style() GridStyle.CHECKER: _draw_checker_style()6.2 3D网格扩展同样的原理可以应用于3D空间tool class_name EditableGrid3D extends Node3D export var grid_size : Vector3i(10, 10, 10) export var cell_size : Vector3(1.0, 1.0, 1.0) export var line_color : Color.YELLOW export var line_width : 0.05 func _ready(): var immediate_mesh ImmediateMesh.new() var material ORMMaterial3D.new() material.shading_mode BaseMaterial3D.SHADING_MODE_UNSHADED material.albedo_color line_color var mesh_instance MeshInstance3D.new() mesh_instance.mesh immediate_mesh mesh_instance.cast_shadow GeometryInstance3D.SHADOW_CASTING_SETTING_OFF add_child(mesh_instance) immediate_mesh.surface_begin(Mesh.PRIMITIVE_LINES) # 绘制3D网格线... immediate_mesh.surface_end()6.3 与其他编辑器功能集成将网格工具与Godot的其他编辑器功能结合# 在网格上右键添加预设节点 func _register_grid_context_menu(): add_tool_submenu_item(网格工具, grid_context_menu) var grid_context_menu PopupMenu.new() grid_context_menu.add_item(在当前位置添加节点) grid_context_menu.add_item(沿网格路径创建) grid_context_menu.id_pressed.connect(func(id): match id: 0: _add_node_at_cursor() 1: _create_path_along_grid() )
