fix(editor): move build stamp to bottom, expand palette list, add hover feedback and instructions

scripts/editor/ui/editor_viewport.gd

@@ -26,6 +26,12 @@ var pending_catalog_id: String = ""
 ## Tile id the next "brush" click paints. Cycled with number keys 0-9.
 var current_tile_id: int = 1
 
+var _hover_tx: int = -1
+var _hover_ty: int = -1
+var _mouse_down: bool = false
+var _last_drag_tx: int = -1
+var _last_drag_ty: int = -1
+
 const TILE_EMPTY_COLOR := Color(0.15, 0.15, 0.17)
 const TILE_SOLID_COLOR := Color(0.35, 0.55, 0.35)
 const GRID_COLOR := Color(0, 0, 0, 0.25)
@@ -39,6 +45,16 @@ func _init() -> void:
 	focus_mode = Control.FOCUS_ALL
 
 
+func _notification(what: int) -> void:
+	if what == NOTIFICATION_MOUSE_EXIT:
+		_hover_tx = -1
+		_hover_ty = -1
+		_mouse_down = false
+		_last_drag_tx = -1
+		_last_drag_ty = -1
+		queue_redraw()
+
+
 func setup(p_core: EditorCore, p_layer_idx: int = 0) -> void:
 	core = p_core
 	layer_idx = p_layer_idx
@@ -76,11 +92,32 @@ func _draw() -> void:
 	for y in range(layer.height + 1):
 		draw_line(Vector2(0, y * cell_size), Vector2(layer.width * cell_size, y * cell_size), GRID_COLOR)
 
+	# Hover highlight over current cell
+	if _hover_tx >= 0 and _hover_tx < layer.width and _hover_ty >= 0 and _hover_ty < layer.height:
+		var h_rect := Rect2(_hover_tx * cell_size, _hover_ty * cell_size, cell_size, cell_size)
+		draw_rect(h_rect, Color(1.0, 1.0, 1.0, 0.2), true)
+		draw_rect(h_rect, Color(1.0, 0.95, 0.3, 0.85), false, 2.0)
+		if core.tools.get_active_tool_id() == "object_place" and pending_catalog_id != "":
+			var ghost_pos := Vector2((_hover_tx + 0.5) * cell_size, (_hover_ty + 0.5) * cell_size)
+			draw_circle(ghost_pos, cell_size * 0.35, Color(1.0, 0.8, 0.2, 0.5))
+
+	var default_font := ThemeDB.fallback_font
 	for obj in core.model.payload.objects:
 		var center := Vector2(obj.position.x * cell_size, obj.position.y * cell_size)
 		var is_selected: bool = core.selection.get_selected() == obj.id
 		var color := OBJECT_SELECTED_COLOR if is_selected else OBJECT_COLOR
-		draw_circle(center, cell_size * 0.3, color)
+		var r := cell_size * 0.38
+		draw_circle(center, r, color)
+		draw_arc(center, r, 0.0, TAU, 16, Color(0, 0, 0, 0.85), 1.5)
+		if is_selected:
+			draw_arc(center, r + 3.0, 0.0, TAU, 16, Color(1, 1, 1, 0.95), 2.0)
+
+		var display_name: String = ""
+		if obj.properties is Dictionary and obj.properties.has("display_name"):
+			display_name = str(obj.properties["display_name"])
+		if display_name == "":
+			display_name = obj.id
+		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))
 
 
 func _gui_input(event: InputEvent) -> void:
@@ -88,9 +125,27 @@ func _gui_input(event: InputEvent) -> void:
 		return
 	if event is InputEventMouseButton:
 		var mb := event as InputEventMouseButton
-		if mb.pressed and mb.button_index == MOUSE_BUTTON_LEFT:
-			_handle_click(mb.position)
-			accept_event()
+		if mb.button_index == MOUSE_BUTTON_LEFT:
+			_mouse_down = mb.pressed
+			if mb.pressed:
+				_handle_click(mb.position)
+				accept_event()
+			else:
+				_last_drag_tx = -1
+				_last_drag_ty = -1
+	elif event is InputEventMouseMotion:
+		var mm := event as InputEventMouseMotion
+		var tx := int(floor(mm.position.x / cell_size))
+		var ty := int(floor(mm.position.y / cell_size))
+		if tx != _hover_tx or ty != _hover_ty:
+			_hover_tx = tx
+			_hover_ty = ty
+			queue_redraw()
+		if _mouse_down and (tx != _last_drag_tx or ty != _last_drag_ty):
+			var active_tool := core.tools.get_active_tool_id()
+			if active_tool in ["brush", "erase"]:
+				_handle_click(mm.position)
+		accept_event()
 	elif event is InputEventKey:
 		var key := event as InputEventKey
 		if key.pressed and not key.echo:
@@ -105,6 +160,8 @@ func _handle_key(key: InputEventKey) -> void:
 func _handle_click(local_pos: Vector2) -> void:
 	var tx := int(floor(local_pos.x / cell_size))
 	var ty := int(floor(local_pos.y / cell_size))
+	_last_drag_tx = tx
+	_last_drag_ty = ty
 
 	match core.tools.get_active_tool_id():
 		"brush":
@@ -125,6 +182,7 @@ func _handle_click(local_pos: Vector2) -> void:
 					queue_redraw()
 		"select":
 			core.select_object(_object_at(tx, ty))
+			edit_applied.emit()
 			queue_redraw()