#!/usr/bin/env python
# Version 0.3
# GIMP plugin to export layers as Sprite for 2D games
# 0.2: added automatic reverse of image layers
# 0.3: added spacing between frames of the spritesheet

from gimpfu import *
import os

gettext.install("gimp20-python", gimp.locale_directory, unicode=True)

def python_sprite_tape(timg, tdrawable, invert_order, spacing, cnt_hor=8, cnt_vert=8):
     width = timg.width
     height = timg.height

     newwidth = cnt_hor * width + spacing * (cnt_hor + 1)
     newheight = cnt_vert * height + spacing * (cnt_vert + 1)

     timg.resize(newwidth, newheight,0,0)

     if invert_order:
         pdb.script_fu_reverse_layers(timg, tdrawable)

     for y in range(cnt_vert):
       for x in range(cnt_hor):
	 layer_numb=x+(y*cnt_hor)
	 if layer_numb>=len(timg.layers):
	   break
	 newx = x * width + spacing * (x + 1)
	 newy = y * height + spacing * (y + 1)
	 timg.layers[layer_numb].translate(newx, newy)
     timg.merge_visible_layers(0)
     timg.layers[0].resize_to_image_size()

register(
    proc_name=("python_fu_sprite_tape"),
    blurb=("Make the tape of sprites from separate sprites in layers"),
    help=("Make the tape of sprites from separate sprites in layers"),
    author=("FedeX"),
    copyright=("Pheodor Tsapanas a.k.a. FedeX"),
    date=("2010"),
    label=("tape"),
    imagetypes=("*"),
    params=[
	(PF_IMAGE, "timg", "Image", None),
	(PF_DRAWABLE, "tdrawable", "Drawable", None),
        (PF_BOOL, "invert_order", "Invert order", False ),
        (PF_INT, "spacing", "Spacing", 0 ),
        (PF_INT, "cnt_hor", "Sprites hor.",8 ),
        (PF_INT, "cnt_vert", "Sprites vert.", 8)
	   ],
    results=[],
    function=(python_sprite_tape),
    menu=("<Image>/Image/Sprite"),
    domain=("gimp20-python", gimp.locale_directory)
    )

main()