ROOT_DIR:=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
CFLAGS = -fsanitize=address -I $(ROOT_DIR)/include -I/usr/local/include -O0 -g -Wall -Wextra
LDFLAGS = -L/opt/homebrew/opt/llvm/lib -L/usr/local/lib -lglfw -lvulkan -ldl -Xlinker -rpath -Xlinker /usr/local/lib -Xlinker -rpath -Xlinker /opt/homebrew/opt/llvm/lib -Xpreprocessor -fooenmp
CC = /opt/homebrew/opt/llvm/bin/clang
GDB = lldb

SOURCES = $(wildcard src/*.c)

OBJECTS = $(addsuffix .o, $(basename $(SOURCES)))
VERT_SPV = $(addsuffix .vert.spv, $(basename $(wildcard shader_src/*.vert)))
FRAG_SPV = $(addsuffix .frag.spv, $(basename $(wildcard shader_src/*.frag)))

export MVK_CONFIG_USE_METAL_ARGUMENT_BUFFERS=1

.PHONY: all
all: spacegame $(VERT_SPV) $(FRAG_SPV)

spacegame: $(OBJECTS)
	$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)

.compdb/%.compdb_entry: %.c
	@mkdir -p $(shell dirname $@)
	@echo "    {" > $@
	@echo "        \"command\": \"$(CC) $(CFLAGS) -c $<\","   >> $@
	@echo "        \"directory\": \"$(CURDIR)\","               >> $@
	@echo "        \"file\": \"$<\""                    >> $@
	@echo "    },"                              >> $@

COMPDB_ENTRIES = $(addprefix .compdb/, $(addsuffix .compdb_entry, $(basename $(SOURCES))))

compile_commands.json: $(COMPDB_ENTRIES)
	@echo "[" > $@.tmp
	@cat $^ >> $@.tmp
	@sed '$$d' < $@.tmp > $@
	@echo "    }" >> $@
	@echo "]" >> $@
	@rm $@.tmp

%.o: %.c
	$(CC) -c -o $@ $< $(CFLAGS)

.PHONY: clean clean_compdb

clean:
	rm $(FRAG_SPV)
	rm $(VERT_SPV)
	rm $(OBJECTS)
	rm spacegame

clean_compdb:
	rm -rf .compdb
	rm compile_commands.json

run: spacegame
	./spacegame

debug: spacegame
	$(GDB) spacegame


%.vert.spv: %.vert
	glslangValidator -V -o $@ $<

%.frag.spv: %.frag
	glslangValidator -V -o $@ $<