data/sprites/ship.png: ship.pov gfx.mk ./povimg.sh +W32 +H32 $< > $@ data/indicators/life.png: ship.pov gfx.mk ./povimg.sh +W17 +H17 $< > $@ data/sprites/rock%.png: rocks.pov gfx.mk ./povimg.sh +H52 +W52 +K$* $< > $@