# This file is part of OpenTTD.
# OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
# OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
#
# Building requires GRFCodec.
#
# Recent versions (including sources) can be found at:
#  http://www.openttd.org/download-grfcodec
#
# The mercurial repository can be found at:
#  http://hg.openttdcoop.org/grfcodec
#


ROOT_DIR = !!ROOT_DIR!!
GRF_DIR  = $(ROOT_DIR)/media/extra_grf
BASESET_DIR = $(ROOT_DIR)/media/baseset
LANG_DIR = $(ROOT_DIR)/src/lang
BIN_DIR  = !!BIN_DIR!!/baseset
OBJS_DIR = !!GRF_OBJS_DIR!!
OS       = !!OS!!
STAGE    = !!STAGE!!

# Check if we want to show what we are doing
ifdef VERBOSE
	Q =
	E = @true
else
	Q = @
	E = @echo
endif

GRFCODEC := !!GRFCODEC!!
NFORENUM := !!NFORENUM!!
CC_BUILD := !!CC_BUILD!!
MD5SUM   := $(shell [ "$(OS)" = "OSX" ] && echo "md5 -r" || echo "md5sum")

# Some "should not be changed" settings.
NFO_FILES    := $(GRF_DIR)/*.nfo $(GRF_DIR)/rivers/*.nfo
PNG_FILES    := $(GRF_DIR)/*.png $(GRF_DIR)/rivers/*.png

# List of target files.
OBT_FILES    := $(BIN_DIR)/orig_dos.obg
OBT_FILES    += $(BIN_DIR)/orig_dos_de.obg
OBT_FILES    += $(BIN_DIR)/orig_win.obg
OBT_FILES    += $(BIN_DIR)/orig_dos.obs
OBT_FILES    += $(BIN_DIR)/orig_win.obs
OBT_FILES    += $(BIN_DIR)/no_sound.obs
OBT_FILES    += $(BIN_DIR)/orig_dos.obm
OBT_FILES    += $(BIN_DIR)/orig_win.obm
OBT_FILES    += $(BIN_DIR)/no_music.obm
OBT_FILES    += $(BIN_DIR)/orig_tto.obm

# Build the GRF.
all: $(OBT_FILES)
ifdef GRFCODEC
all: $(BIN_DIR)/openttd.grf $(BIN_DIR)/orig_extra.grf
endif

$(OBJS_DIR)/langfiles.tmp: $(LANG_DIR)/*.txt
	$(E) '$(STAGE) Collecting baseset translations'
	$(Q) cat $^ > $@

$(BIN_DIR)/%.obg: $(BASESET_DIR)/%.obg $(BIN_DIR)/orig_extra.grf $(OBJS_DIR)/langfiles.tmp $(BASESET_DIR)/translations.awk
	$(E) '$(STAGE) Updating $(notdir $@)'
	$(Q) sed 's/^ORIG_EXTRA.GRF    = *[0-9a-f]*$$/ORIG_EXTRA.GRF    = '`$(MD5SUM) $(BIN_DIR)/orig_extra.grf | sed 's@ .*@@'`'/' $< > $@.tmp
	$(Q) awk -v langfiles='$(OBJS_DIR)/langfiles.tmp' -f $(BASESET_DIR)/translations.awk $@.tmp >$@
	$(Q) rm $@.tmp

$(BIN_DIR)/%.obs: $(BASESET_DIR)/%.obs $(OBJS_DIR)/langfiles.tmp $(BASESET_DIR)/translations.awk
	$(E) '$(STAGE) Updating $(notdir $@)'
	$(Q) awk -v langfiles='$(OBJS_DIR)/langfiles.tmp' -f $(BASESET_DIR)/translations.awk $< >$@

$(BIN_DIR)/%.obm: $(BASESET_DIR)/%.obm $(OBJS_DIR)/langfiles.tmp $(BASESET_DIR)/translations.awk
	$(E) '$(STAGE) Updating $(notdir $@)'
	$(Q) awk -v langfiles='$(OBJS_DIR)/langfiles.tmp' -f $(BASESET_DIR)/translations.awk $< >$@

# Guard against trying to run GRFCODEC/NFORENUM without either being set.
ifdef GRFCODEC
ifdef NFORENUM

# Compile extra grf
$(BIN_DIR)/openttd.grf: $(PNG_FILES) $(NFO_FILES) $(GRF_DIR)/assemble_nfo.awk
	$(E) '$(STAGE) Assembling openttd.nfo'
	$(Q)-mkdir -p $(OBJS_DIR)/sprites
	$(Q)-cp $(PNG_FILES) $(OBJS_DIR)/sprites 2> /dev/null
	$(Q) awk -f $(GRF_DIR)/assemble_nfo.awk $(GRF_DIR)/openttd.nfo > $(OBJS_DIR)/sprites/openttd.nfo
	$(Q) $(NFORENUM) -s $(OBJS_DIR)/sprites/openttd.nfo
	$(E) '$(STAGE) Compiling openttd.grf'
	$(Q) $(GRFCODEC) -n -s -e -p1 $(OBJS_DIR)/openttd.grf
	$(Q)cp $(OBJS_DIR)/openttd.grf $(BIN_DIR)/openttd.grf

# The copy operation of PNG_FILES is duplicated from the target 'openttd.grf', thus those targets may not run in parallel.
$(BIN_DIR)/orig_extra.grf: $(PNG_FILES) $(NFO_FILES) $(GRF_DIR)/assemble_nfo.awk | $(BIN_DIR)/openttd.grf
	$(E) '$(STAGE) Assembling orig_extra.nfo'
	$(Q)-mkdir -p $(OBJS_DIR)/sprites
	$(Q)-cp $(PNG_FILES) $(OBJS_DIR)/sprites 2> /dev/null
	$(Q) awk -f $(GRF_DIR)/assemble_nfo.awk $(GRF_DIR)/orig_extra.nfo > $(OBJS_DIR)/sprites/orig_extra.nfo
	$(Q) $(NFORENUM) -s $(OBJS_DIR)/sprites/orig_extra.nfo
	$(E) '$(STAGE) Compiling orig_extra.grf'
	$(Q) $(GRFCODEC) -n -s -e -p1 $(OBJS_DIR)/orig_extra.grf
	$(Q)cp $(OBJS_DIR)/orig_extra.grf $(BIN_DIR)/orig_extra.grf

endif
endif

# Clean up temporary files.
clean:
	$(Q)rm -f *.bak *.grf $(OBT_FILES)

# Clean up temporary files
mrproper: clean
	$(Q)rm -fr sprites

.PHONY: all mrproper depend clean