1 files changed, 199 insertions, 0 deletions
diff --git a/addons/voxel-core/controls/tiles_viewer/tiles_viewer.gd b/addons/voxel-core/controls/tiles_viewer/tiles_viewer.gd
new file mode 100644
index 0000000..2bea836
--- /dev/null
+++ b/addons/voxel-core/controls/tiles_viewer/tiles_viewer.gd
@@ -0,0 +1,199 @@
+tool
+extends TextureRect
+# Shows tiles of VoxelSet and allows for the selection of Tile(s)
+
+
+
+## Signals
+# Emitted when a uv position has been selected
+signal selected_uv(uv)
+# Emitted when a uv position has been unselected
+signal unselected_uv(uv)
+
+
+
+## Exported Variables
+# Maximum number of uv positions that can be selected at any one time
+export(int, -1, 256) var selection_max := 0 setget set_selection_max
+
+# Color to applyed to border of hovered uv position(s)
+export var hovered_color := Color(1, 1, 1, 0.6) setget set_hovered_color
+
+# Color to applyed to border of selected uv position(s)
+export var selected_color := Color.white setget set_selection_color
+
+# Color to applyed to border of invalid uv position(s)
+export var invalid_color := Color.red setget set_invalid_color
+
+# VoxelSet being used
+export(Resource) var voxel_set = null setget set_voxel_set
+
+
+
+## Private Variables
+# Stores last uv position hovered
+var _last_uv_hovered := -Vector2.ONE
+
+# Selected uv positions
+var _selections := []
+
+
+
+## Built-In Virtual Methods
+func _gui_input(event : InputEvent):
+	if event is InputEventMouse:
+		_last_uv_hovered = world_to_uv(event.position)
+		if selection_max != 0 and event is InputEventMouseButton:
+			if is_valid_uv(_last_uv_hovered) and event.button_index == BUTTON_LEFT and not event.is_pressed():
+				if _selections.has(_last_uv_hovered):
+					unselect(_last_uv_hovered)
+				else:
+					select(_last_uv_hovered)
+		update()
+
+
+func _draw():
+	if is_instance_valid(voxel_set) and voxel_set.uv_ready():
+		texture = voxel_set.tiles
+		if selection_max != 0:
+			for selection in _selections:
+				draw_rect(Rect2(
+								selection * voxel_set.tile_size,
+								voxel_set.tile_size),
+						selected_color, false, 3)
+		
+		if _last_uv_hovered == -Vector2.ONE:
+			hint_tooltip = ""
+		else:
+			hint_tooltip = str(_last_uv_hovered)
+			draw_rect(Rect2(
+							_last_uv_hovered * voxel_set.tile_size,
+							voxel_set.tile_size),
+					hovered_color if is_valid_uv(_last_uv_hovered) else invalid_color,
+					false, 3)
+
+
+
+## Public Methods
+# Sets selection_max, shrinks _selections to new maximum if needed and calls on update by default
+func set_selection_max(value : int, update := true) -> void:
+	selection_max = clamp(value, -1, 256)
+	unselect_shrink()
+	if update:
+		self.update()
+
+
+# Sets hovered_color, and calls on update by default
+func set_hovered_color(value : Color, update := true) -> void:
+	hovered_color = value
+	if update:
+		self.update()
+
+
+# Sets selected_color, and calls on update by default
+func set_selection_color(value : Color, update := true) -> void:
+	selected_color = value
+	if update:
+		self.update()
+
+
+# Sets invalid_color, and calls on update by default
+func set_invalid_color(value : Color, update := true) -> void:
+	invalid_color = value
+	if update:
+		self.update()
+
+
+# Sets voxel_set, calls update_mesh if needed and not told otherwise
+func set_voxel_set(value : Resource, update := true) -> void:
+	if not (typeof(value) == TYPE_NIL or value is VoxelSet):
+		printerr("Invalid Resource given expected VoxelSet")
+		return
+	
+	if is_instance_valid(voxel_set):
+		if voxel_set.is_connected("requested_refresh", self, "update"):
+			voxel_set.disconnect("requested_refresh", self, "update")
+	
+	voxel_set = value
+	if is_instance_valid(voxel_set):
+		if not voxel_set.is_connected("requested_refresh", self, "update"):
+			voxel_set.connect("requested_refresh", self, "update")
+	
+	if update:
+		self.update()
+
+
+# Returns true if uv is selected
+func has_selected(uv : Vector2) -> bool:
+	return _selections.has(uv)
+
+
+# Returns uv selected at given index
+func get_selected(index : int) -> Vector2:
+	return _selections[index]
+
+
+# Returns array of selected faces
+func get_selections() -> Array:
+	return _selections.duplicate()
+
+
+# Returns number of faces selected
+func get_selected_size() -> int:
+	return _selections.size()
+
+
+# Returns world position as uv position
+func world_to_uv(world : Vector2) -> Vector2:
+	return (world / voxel_set.tile_size).floor() if is_instance_valid(voxel_set) and voxel_set.uv_ready() else -Vector2.ONE
+
+
+# Returns true if uv position is valid
+func is_valid_uv(uv : Vector2) -> bool:
+	if is_instance_valid(voxel_set) and voxel_set.uv_ready():
+		var bounds = voxel_set.tiles.get_size() / voxel_set.tile_size
+		return uv.x >= 0 and uv.y >= 0 and uv.x < bounds.x and uv.y < bounds.y
+	return false
+
+
+# Returns true if world position is valid uv position
+func is_valid_world(world : Vector2) -> bool:
+	return is_valid_uv(world_to_uv(world))
+
+
+# Selects given uv position, and emits selected_uv
+func select(uv : Vector2, emit := true) -> void:
+	# TODO UV within bounds
+	if selection_max != 0:
+		unselect_shrink(selection_max - 1)
+		_selections.append(uv)
+		if emit:
+			emit_signal("selected_uv", uv)
+
+
+# Unselects given uv position, and emits unselected_uv
+func unselect(uv : Vector2, emit := true) -> void:
+	if _selections.has(uv):
+		_selections.erase(uv)
+		if emit:
+			emit_signal("unselected_uv", uv)
+
+
+# Unselects all uv position
+func unselect_all() -> void:
+	while not _selections.empty():
+		unselect(_selections.back())
+
+
+# Unselects all uv position until given size is met
+func unselect_shrink(size := selection_max, emit := true) -> void:
+	if size >= 0:
+		while _selections.size() > size:
+			unselect(_selections.back(), emit)
+
+
+
+## Private Methods
+func _on_TilesViewer_mouse_exited():
+	_last_uv_hovered = -Vector2.ONE
+	update()