.PHONY: web test dist clean realclean

ASSETS_SRC = $(wildcard game/www/*)
ASSETS_DST = $(patsubst game/www/%,dist/%,$(ASSETS_SRC))

TEST_PORT ?= 8000

EMSDK_SYSROOT ?= $(EMSDK)/upstream/emscripten/cache/sysroot
EMCC_CFLAGS := -O3 \
			   -sUSE_GLFW=3 \
			   -sASSERTIONS=1 \
			   -sWASM=1 \
			   -sASYNCIFY \
			   -sGL_ENABLE_GET_PROC_ADDRESS=1 \
			   -sEXPORTED_RUNTIME_METHODS=HEAPF32,ccall,cwrap,callMain

web: dist $(ASSETS_DST)

test: web
	cd dist && python3 -m http.server $(TEST_PORT)

dist:
	env \
		CC=emcc \
		EMCC_CFLAGS="$(EMCC_CFLAGS)" \
		C_INCLUDE_PATH="$(EMSDK_SYSROOT)/include:$C_INCLUDE_PATH" \
		cargo build --target wasm32-unknown-emscripten --profile wasm
	mkdir -p dist
	cp ./target/wasm32-unknown-emscripten/wasm/game.{js,wasm} dist

dist/%: game/www/%
	cp -r $< $@

clean:
	rm -rf dist

realclean: clean
	cargo clean