Add density to the square & circle brushes

00% density means that the brush gets completely drawn, anything less leaves gaps inside the brush, acting like a spray tool.

Translations/Translations.pot

@@ -1865,6 +1865,10 @@ msgstr ""
 msgid "Fills the drawn shape with color, instead of drawing a hollow shape"
 msgstr ""
 
+#. Found in the tool options of the Pencil, Eraser and Shading tools. It is a percentage of how dense the brush is. 100% density means that the brush gets completely drawn, anything less leaves gaps inside the brush, acting like a spray tool.
+msgid "Density:"
+msgstr ""
+
 msgid "Brush color from"
 msgstr ""
 

src/Tools/BaseDraw.gd

@@ -1,8 +1,11 @@
 extends BaseTool
 
+const IMAGE_BRUSHES := [Brushes.FILE, Brushes.RANDOM_FILE, Brushes.CUSTOM]
+
 var _brush := Brushes.get_default_brush()
 var _brush_size := 1
 var _brush_size_dynamics := 1
+var _brush_density := 100
 var _brush_flip_x := false
 var _brush_flip_y := false
 var _brush_rotate_90 := false
@@ -89,6 +92,12 @@ func _reset_dynamics() -> void:
 	save_config()
 
 
+func _on_density_value_slider_value_changed(value: int) -> void:
+	_brush_density = value
+	update_config()
+	save_config()
+
+
 func _on_InterpolateFactor_value_changed(value: float) -> void:
 	_brush_interpolate = int(value)
 	update_config()
@@ -111,6 +120,7 @@ func get_config() -> Dictionary:
 		"brush_type": _brush.type,
 		"brush_index": _brush.index,
 		"brush_size": _brush_size,
+		"brush_density": _brush_density,
 		"brush_interpolate": _brush_interpolate,
 		"brush_flip_x": _brush_flip_x,
 		"brush_flip_y": _brush_flip_y,
@@ -128,6 +138,7 @@ func set_config(config: Dictionary) -> void:
 	_brush_size_dynamics = _brush_size
 	if Tools.dynamics_size != Tools.Dynamics.NONE:
 		_brush_size_dynamics = Tools.brush_size_min
+	_brush_density = config.get("brush_density", _brush_density)
 	_brush_interpolate = config.get("brush_interpolate", _brush_interpolate)
 	_brush_flip_x = config.get("brush_flip_x", _brush_flip_x)
 	_brush_flip_y = config.get("brush_flip_y", _brush_flip_y)
@@ -181,8 +192,9 @@ func update_brush() -> void:
 	_indicator = _create_brush_indicator()
 	_polylines = _create_polylines(_indicator)
 	$Brush/Type/Texture.texture = _brush_texture
-	$ColorInterpolation.visible = _brush.type in [Brushes.FILE, Brushes.RANDOM_FILE, Brushes.CUSTOM]
-	$RotationOptions.visible = _brush.type in [Brushes.FILE, Brushes.RANDOM_FILE, Brushes.CUSTOM]
+	$DensityValueSlider.visible = _brush.type not in IMAGE_BRUSHES
+	$ColorInterpolation.visible = _brush.type in IMAGE_BRUSHES
+	$RotationOptions.visible = _brush.type in IMAGE_BRUSHES
 
 
 func update_random_image() -> void:
@@ -492,7 +504,7 @@ func draw_indicator(left: bool) -> void:
 
 func draw_indicator_at(pos: Vector2i, offset: Vector2i, color: Color) -> void:
 	var canvas: Node2D = Global.canvas.indicators
-	if _brush.type in [Brushes.FILE, Brushes.RANDOM_FILE, Brushes.CUSTOM] and not _draw_line:
+	if _brush.type in IMAGE_BRUSHES and not _draw_line:
 		pos -= _brush_image.get_size() / 2
 		pos -= offset
 		canvas.draw_texture(_brush_texture, pos)
@@ -522,6 +534,8 @@ func _set_pixel(pos: Vector2i, ignore_mirroring := false) -> void:
 
 
 func _set_pixel_no_cache(pos: Vector2i, ignore_mirroring := false) -> void:
+	if randi() % 100 >= _brush_density:
+		return
 	pos = _stroke_project.tiles.get_canon_position(pos)
 	if Global.current_project.has_selection:
 		pos = Global.current_project.selection_map.get_canon_position(pos)

src/Tools/BaseDraw.tscn

@@ -1,9 +1,10 @@
-[gd_scene load_steps=8 format=3 uid="uid://ubyatap3sylf"]
+[gd_scene load_steps=9 format=3 uid="uid://ubyatap3sylf"]
 
 [ext_resource type="PackedScene" uid="uid://yjhp0ssng2mp" path="res://src/UI/Nodes/ValueSlider.tscn" id="1"]
 [ext_resource type="PackedScene" uid="uid://ctfgfelg0sho8" path="res://src/Tools/BaseTool.tscn" id="2"]
 [ext_resource type="Script" path="res://src/Tools/BaseDraw.gd" id="3"]
 [ext_resource type="Script" path="res://src/UI/Nodes/CollapsibleContainer.gd" id="3_76bek"]
+[ext_resource type="Script" path="res://src/UI/Nodes/ValueSlider.gd" id="5_kdxku"]
 
 [sub_resource type="ButtonGroup" id="ButtonGroup_7u3x0"]
 resource_name = "rotate"
@@ -130,7 +131,24 @@ suffix = "px"
 global_increment_action = "brush_size_increment"
 global_decrement_action = "brush_size_decrement"
 
-[node name="ColorInterpolation" parent="." index="4" instance=ExtResource("1")]
+[node name="DensityValueSlider" type="TextureProgressBar" parent="." index="4"]
+custom_minimum_size = Vector2(0, 24)
+layout_mode = 2
+focus_mode = 2
+mouse_default_cursor_shape = 2
+theme_type_variation = &"ValueSlider"
+min_value = 1.0
+value = 100.0
+nine_patch_stretch = true
+stretch_margin_left = 3
+stretch_margin_top = 3
+stretch_margin_right = 3
+stretch_margin_bottom = 3
+script = ExtResource("5_kdxku")
+prefix = "Density:"
+suffix = "%"
+
+[node name="ColorInterpolation" parent="." index="5" instance=ExtResource("1")]
 visible = false
 layout_mode = 2
 tooltip_text = "0: Color from the brush itself, 100: the currently selected color"
@@ -143,4 +161,5 @@ prefix = "Brush color from:"
 [connection signal="toggled" from="RotationOptions/GridContainer/Rotate/Rotate270" to="." method="_on_rotate_270_toggled"]
 [connection signal="pressed" from="Brush/Type" to="." method="_on_BrushType_pressed"]
 [connection signal="value_changed" from="Brush/BrushSize" to="." method="_on_BrushSize_value_changed"]
+[connection signal="value_changed" from="DensityValueSlider" to="." method="_on_density_value_slider_value_changed"]
 [connection signal="value_changed" from="ColorInterpolation" to="." method="_on_InterpolateFactor_value_changed"]