194 lines
6.5 KiB
GDScript
194 lines
6.5 KiB
GDScript
class_name EditorViewport
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extends Control
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## Custom 2D viewport for the in-game editor (docs/architecture/editor.md
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## §7.2 `EditorViewport`).
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##
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## Deliberately 2D top-down, not a 3D gizmo viewport -- per §8's own risk
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## mitigation ("start with a 2D tile editor... matches CHUNK_SIZE_Z=1
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## default; add 3D later"). Renders one tile layer as a grid plus the
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## chunk's objects as dots, and turns clicks into calls on `EditorCore`
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## routed through whichever tool is active in `ToolRegistry` -- this is UI
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## glue, it never mutates `ChunkEditorModel` itself.
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##
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## Coordinate convention matches the rest of this codebase's tile system
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## (scripts/tile_layer_node.gd `_tile_to_world`): chunk-local X/Y are the
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## flat ground plane, Z is height (CHUNK_SIZE_Z=1 by default -- see
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## scripts/chunk.gd). One grid cell == one world unit == `cell_size` pixels.
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signal edit_applied
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var core: EditorCore = null
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var layer_idx: int = 0
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var cell_size: float = 24.0
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## Catalog id the next "object_place" click will place. Set by
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## `InGameEditor` from `PalettePanel.object_selected`.
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var pending_catalog_id: String = ""
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## Tile id the next "brush" click paints. Cycled with number keys 0-9.
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var current_tile_id: int = 1
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var _hover_tx: int = -1
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var _hover_ty: int = -1
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var _mouse_down: bool = false
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var _last_drag_tx: int = -1
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var _last_drag_ty: int = -1
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const TILE_EMPTY_COLOR := Color(0.15, 0.15, 0.17)
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const TILE_SOLID_COLOR := Color(0.35, 0.55, 0.35)
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const GRID_COLOR := Color(0, 0, 0, 0.25)
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const OBJECT_COLOR := Color(0.9, 0.6, 0.2)
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const OBJECT_SELECTED_COLOR := Color(1.0, 0.95, 0.2)
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func _init() -> void:
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name = "EditorViewport"
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mouse_filter = Control.MOUSE_FILTER_STOP
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focus_mode = Control.FOCUS_ALL
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func _notification(what: int) -> void:
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if what == NOTIFICATION_MOUSE_EXIT:
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_hover_tx = -1
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_hover_ty = -1
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_mouse_down = false
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_last_drag_tx = -1
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_last_drag_ty = -1
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queue_redraw()
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func setup(p_core: EditorCore, p_layer_idx: int = 0) -> void:
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core = p_core
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layer_idx = p_layer_idx
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core.selection.selection_changed.connect(func(_id): queue_redraw())
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_resize_to_layer()
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queue_redraw()
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func _resize_to_layer() -> void:
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var layer := core.model.get_layer(layer_idx)
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if layer == null:
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custom_minimum_size = Vector2(cell_size * 8, cell_size * 8)
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return
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custom_minimum_size = Vector2(layer.width * cell_size, layer.height * cell_size)
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func _draw() -> void:
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if core == null:
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return
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var layer := core.model.get_layer(layer_idx)
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if layer == null:
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return
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for y in range(layer.height):
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for x in range(layer.width):
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var tile_id := layer.get_tile(x, y, 0)
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var color := TILE_EMPTY_COLOR
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var tdef := layer.get_tile_def(tile_id)
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if tdef != null and tdef.solid:
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color = TILE_SOLID_COLOR
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draw_rect(Rect2(x * cell_size, y * cell_size, cell_size, cell_size), color, true)
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for x in range(layer.width + 1):
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draw_line(Vector2(x * cell_size, 0), Vector2(x * cell_size, layer.height * cell_size), GRID_COLOR)
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for y in range(layer.height + 1):
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draw_line(Vector2(0, y * cell_size), Vector2(layer.width * cell_size, y * cell_size), GRID_COLOR)
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# Hover highlight over current cell
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if _hover_tx >= 0 and _hover_tx < layer.width and _hover_ty >= 0 and _hover_ty < layer.height:
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var h_rect := Rect2(_hover_tx * cell_size, _hover_ty * cell_size, cell_size, cell_size)
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draw_rect(h_rect, Color(1.0, 1.0, 1.0, 0.2), true)
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draw_rect(h_rect, Color(1.0, 0.95, 0.3, 0.85), false, 2.0)
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if core.tools.get_active_tool_id() == "object_place" and pending_catalog_id != "":
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var ghost_pos := Vector2((_hover_tx + 0.5) * cell_size, (_hover_ty + 0.5) * cell_size)
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draw_circle(ghost_pos, cell_size * 0.35, Color(1.0, 0.8, 0.2, 0.5))
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var default_font := ThemeDB.fallback_font
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for obj in core.model.payload.objects:
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var center := Vector2(obj.position.x * cell_size, obj.position.y * cell_size)
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var is_selected: bool = core.selection.get_selected() == obj.id
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var color := OBJECT_SELECTED_COLOR if is_selected else OBJECT_COLOR
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var r := cell_size * 0.38
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draw_circle(center, r, color)
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draw_arc(center, r, 0.0, TAU, 16, Color(0, 0, 0, 0.85), 1.5)
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if is_selected:
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draw_arc(center, r + 3.0, 0.0, TAU, 16, Color(1, 1, 1, 0.95), 2.0)
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var display_name: String = ""
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if obj.properties is Dictionary and obj.properties.has("display_name"):
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display_name = str(obj.properties["display_name"])
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if display_name == "":
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display_name = obj.id
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draw_string(default_font, center + Vector2(-r * 1.5, -r - 2), display_name.left(6), HORIZONTAL_ALIGNMENT_CENTER, int(r * 3.0), 10, Color(1, 1, 1, 0.9))
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func _gui_input(event: InputEvent) -> void:
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if core == null:
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return
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if event is InputEventMouseButton:
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var mb := event as InputEventMouseButton
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if mb.button_index == MOUSE_BUTTON_LEFT:
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_mouse_down = mb.pressed
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if mb.pressed:
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_handle_click(mb.position)
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accept_event()
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else:
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_last_drag_tx = -1
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_last_drag_ty = -1
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elif event is InputEventMouseMotion:
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var mm := event as InputEventMouseMotion
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var tx := int(floor(mm.position.x / cell_size))
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var ty := int(floor(mm.position.y / cell_size))
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if tx != _hover_tx or ty != _hover_ty:
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_hover_tx = tx
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_hover_ty = ty
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queue_redraw()
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if _mouse_down and (tx != _last_drag_tx or ty != _last_drag_ty):
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var active_tool := core.tools.get_active_tool_id()
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if active_tool in ["brush", "erase"]:
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_handle_click(mm.position)
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accept_event()
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elif event is InputEventKey:
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var key := event as InputEventKey
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if key.pressed and not key.echo:
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_handle_key(key)
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func _handle_key(key: InputEventKey) -> void:
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if key.keycode >= KEY_0 and key.keycode <= KEY_9:
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current_tile_id = key.keycode - KEY_0
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func _handle_click(local_pos: Vector2) -> void:
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var tx := int(floor(local_pos.x / cell_size))
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var ty := int(floor(local_pos.y / cell_size))
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_last_drag_tx = tx
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_last_drag_ty = ty
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match core.tools.get_active_tool_id():
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"brush":
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if core.paint_tile(layer_idx, tx, ty, current_tile_id):
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edit_applied.emit()
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queue_redraw()
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"erase":
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var hit := _object_at(tx, ty)
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var changed: bool = core.delete_object(hit) if hit != "" else core.erase_tile(layer_idx, tx, ty)
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if changed:
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edit_applied.emit()
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queue_redraw()
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"object_place":
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if pending_catalog_id != "":
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var new_id := core.place_object(pending_catalog_id, Vector3(tx + 0.5, ty + 0.5, 0.0))
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if new_id != "":
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edit_applied.emit()
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queue_redraw()
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"select":
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core.select_object(_object_at(tx, ty))
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edit_applied.emit()
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queue_redraw()
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func _object_at(tx: int, ty: int) -> String:
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for obj in core.model.payload.objects:
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if int(floor(obj.position.x)) == tx and int(floor(obj.position.y)) == ty:
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return obj.id
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return ""
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