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Better spritesheet exporting

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You can now choose how many columns you want your spritesheet to be, allowing you to export atlases.

ISSUE: If the number of columns is larger than the number of rows AND rows * columns are not equal to the number of frames, the result is weird. The exported image has transparent space on its bottom side.
This commit is contained in:
OverloadedOrama 2019-12-29 16:55:01 +02:00
parent 4ae5968887
commit eeaa691d36
8 changed files with 68 additions and 39 deletions
Download patch file Download diff file Expand all files Collapse all files

54
Scripts/Dialogs/ExportSprites.gd
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@ -2,6 +2,8 @@ extends FileDialog
var current_export_path := ""
var export_option := 0
var spritesheet_rows = 1
var spritesheet_columns = 1
func _ready() -> void:
var children := []
@ -15,6 +17,19 @@ func _ready() -> void:
func _on_ExportOption_item_selected(ID : int) -> void:
export_option = ID
var spritesheet_container = Global.find_node_by_name(self, "Spritesheet")
if ID > 1:
spritesheet_container.visible = true
else:
spritesheet_container.visible = false
func _on_VerticalFrames_value_changed(value) -> void:
value = min(value, Global.canvases.size())
spritesheet_rows = ceil(Global.canvases.size() / value)
spritesheet_columns = value
var vertical_frames : SpinBox = Global.find_node_by_name(self, "VerticalFrames")
vertical_frames.value = spritesheet_columns
func _on_ExportSprites_file_selected(path : String) -> void:
current_export_path = path
@ -32,8 +47,8 @@ func export_project() -> void:
path = "%s.png" % path
save_sprite(canvas, path)
i += 1
else: # Export all frames as a spritesheet (single file)
save_spritesheet(export_option == 2)
elif export_option == 2: # Export all frames as a spritesheet (single file)
save_spritesheet()
Global.notification_label("File exported")
@ -57,29 +72,26 @@ func save_sprite(canvas : Canvas, path : String) -> void:
if err != OK:
OS.alert("Can't save file")
func save_spritesheet(horizontal : bool) -> void:
var width
var height
if horizontal: # Horizontal spritesheet
width = 0
height = Global.canvas.size.y
for canvas in Global.canvases:
width += canvas.size.x
if canvas.size.y > height:
height = canvas.size.y
else: # Vertical spritesheet
width = Global.canvas.size.x
height = 0
for canvas in Global.canvases:
height += canvas.size.y
if canvas.size.x > width:
width = canvas.size.x
func save_spritesheet() -> void:
var width = Global.canvas.size.x * spritesheet_rows
var height = Global.canvas.size.y * spritesheet_columns
var whole_image := Image.new()
whole_image.create(width, height, false, Image.FORMAT_RGBA8)
whole_image.lock()
var dst := Vector2.ZERO
var hh := 0
var vv := 0
for canvas in Global.canvases:
if hh < spritesheet_rows:
dst.x = canvas.size.x * hh
hh += 1
else:
vv += 1
dst.x = 0
hh = 1
dst.y = canvas.size.y * vv
for layer in canvas.layers:
var img : Image = layer[0]
img.lock()
@ -93,10 +105,6 @@ func save_spritesheet(horizontal : bool) -> void:
canvas.blend_rect(whole_image, img, Rect2(canvas.position, canvas.size), dst)
layer[0].lock()
if horizontal:
dst += Vector2(canvas.size.x, 0)
else:
dst += Vector2(0, canvas.size.y)
var err = whole_image.save_png(current_export_path)
if err != OK: