tpdp gif script

#!/bin/bash

DELAY_IDLE=24
DELAY_MOVE=18
DELAY_HURT=18

for var in "$@"
do
    echo $var
    base=${var%.png}

    convert $var -crop 128x128+0+0   +repage ${var}_idle_0.png
    convert $var -crop 128x128+128+0 +repage ${var}_idle_1.png
    convert $var -crop 128x128+256+0 +repage ${var}_idle_2.png
    convert $var -crop 128x128+128+0 +repage ${var}_idle_3.png
    convert -dispose previous -delay $DELAY_IDLE ${var}_idle_*.png -loop 0 ${base}_idle.gif
    convert ${base}_idle.gif -scale 200% -coalesce -trim -layers TrimBounds ${base}_idle_big.gif
    rm ${var}_idle_*.png

    convert $var -crop 128x128+384+0 +repage ${var}_move_0.png
    convert $var -crop 128x128+512+0 +repage ${var}_move_1.png
    convert -dispose previous -delay $DELAY_MOVE ${var}_move_*.png -loop 0 ${base}_move.gif
    convert ${base}_move.gif -scale 200% -coalesce -trim -layers TrimBounds ${base}_move_big.gif
    rm ${var}_move_*.png

    convert $var -crop 128x128+640+0 +repage ${var}_transition.png
    rm ${var}_transition.png

    convert $var -crop 128x128+768+0 +repage ${var}_hurt_0.png
    convert $var -crop 128x128+896+0 +repage ${var}_hurt_1.png
    convert -dispose previous -delay $DELAY_HURT ${var}_hurt_*.png -loop 0 ${base}_hurt.gif
    convert ${base}_hurt.gif -scale 200% -coalesce -trim -layers TrimBounds ${base}_hurt_big.gif
    rm ${var}_hurt_*.png
done
echo "Done"