# Bitmap tiles
-BTILE_DIRS=wall floor
+BTILE_DIRS=wall floor tunnel underground
BTILE_SRC=$(shell find $(patsubst %, $(VPATH)/bitmap/%, $(BTILE_DIRS)) -name "*.png")
-BTILE_PNGS=$(patsubst $(VPATH)/bitmap/%, %, $(BTILE_SRC))
+BTILE_PNGS=$(patsubst $(VPATH)/bitmap/%, bunker/%, $(BTILE_SRC))
# Vector images to rasterize without resizing
# Bitmap tile rule
define btile
-$(1)/%.png: bitmap/$(1)/%.png
+bunker/$(1)/%.png: bitmap/$(1)/%.png
@mkdir -p `dirname $$@`
@convert $$< -resize 64x64 $$@
endef