# pikul_two

PROJ=pikul_two

# Automatically set BUILD_MODE if target path hints at it
ifeq (,$(BUILD_MODE))
 ifneq (,$(findstring dbg/,$(MAKECMDGOALS)))
  BUILD_MODE := debug
 else ifneq (,$(findstring rld/,$(MAKECMDGOALS)))
  BUILD_MODE := release-debug
 else ifneq (,$(findstring bin/,$(MAKECMDGOALS)))
  BUILD_MODE := release
 endif
endif

-include config.mk

DIR_EXE_release       := bin
DIR_EXE_release-debug := rld
DIR_EXE_debug         := dbg
DIR_OBJ               := obj
BUILD_MODE            ?= release
DIR_EXE               := $(DIR_EXE_$(BUILD_MODE))

ifeq ($(BUILD_MODE),release)
 OBJ_EXT        := o
 LIB_EXT        := a
 BLT_BUILD_MODE := release64
 BLT_BUILD_DIR  := Release
 OPT_FLAGS      ?= -O3 -s
else ifeq ($(BUILD_MODE),release-debug)
 OBJ_EXT        := rso
 LIB_EXT        := rsa
 BLT_BUILD_MODE := debug64
 BLT_BUILD_DIR  := Debug
 OPT_FLAGS      ?= -O2 -g
else ifeq ($(BUILD_MODE),debug)
 OBJ_EXT        := so
 LIB_EXT        := sa
 BLT_BUILD_MODE := debug64
 BLT_BUILD_DIR  := Debug
 OPT_FLAGS      ?= -O0 -g
else
 $(error Unknown build mode: $(BUILD_MODE))
endif

#echo $@ : $(@F) : $< : $^
define cc-command
	$(CC) -std=c2x -c -o $@ -DNDEBUG $(OPT_FLAGS) $(CFLAGS) $(INCS) $<
endef
define cxx-command
	$(CXX) -std=c++23 -c -o $@ -DDEBUG $(OPT_FLAGS) $(CXXFLAGS) $(INCS) $<
endef
define cc-encode-binary-command
$(1): $(2)
	xxd -i $$< | sed -e 's/^unsigned /const unsigned /' > $$@
endef
define cc-pre-compile-header-command
$(1): $(2)
	$(CC) -std=c2x -O3 -c $$< -o $$@
endef

FLG_PKE = -Isub/imgui -Isub/stb -Isub/cgltf -Isub/bullet3/src
FLG_EDT = $(FLG_PKE) -Isrc -I/home/pikum/build/msdfgen -I/home/pikum/build/msdf-atlas-gen
FLG_MPL = $(FLG_PKE) -Isrc
FLG_RUN = $(FLG_PKE) -Isrc
FLG_TST = $(FLG_PKE) -Isrc

FILES_BIN = \
	assets/fonts/font-mannequin.png \
	assets/fonts/font-mannequin.glyph \

FILES_BIN_SAFE     = $(subst -,_,$(subst .,_,$(FILES_BIN)))
FILES_BIN_H        = $(FILES_BIN_SAFE:%=%.h)
FILES_BIN_GCH      = $(FILES_BIN_SAFE:%=%.gch)

# I don't like foreach but this works
$(foreach f,$(FILES_BIN), \
	$(eval \
		$(call cc-encode-binary-command,$(subst -,_,$(subst .,_,$f)).h,$(f)) \
	) \
)
$(foreach f,$(FILES_BIN_SAFE), \
	$(eval \
		$(call cc-pre-compile-header-command,$(f).gch,$(f).h) \
	) \
)

DST_SHADERS = \
	$(DIR_OBJ)/shaders/vertex.vert.spv \
	$(DIR_OBJ)/shaders/present.vert.spv \
	$(DIR_OBJ)/shaders/texture.frag.spv \
	$(DIR_OBJ)/shaders/present.frag.spv \
	$(DIR_OBJ)/shaders/glyph.vert.spv \
	$(DIR_OBJ)/shaders/glyph.frag.spv \
	$(DIR_OBJ)/shaders/ui-base.vert.spv \
	$(DIR_OBJ)/shaders/ui-base.frag.spv \
	$(DIR_OBJ)/shaders/ui-txtr.frag.spv \

.PHONY: default
default: options .WAIT $(DIR_OBJ)/libpke-editor.$(OBJ_EXT) $(DIR_OBJ)/libpke-example.$(LIB_EXT) $(DIR_EXE)/pke-runtime ;

.PHONY: prepare
prepare: config.h
prepare: config.mk
prepare: $(FILES_BIN_GCH)
prepare:
	mkdir -p $(DIR_EXE)
	mkdir -p $(DIR_OBJ)/shaders
	mkdir -p $(DIR_OBJ)/bullet3

.PHONY: options
options: prepare .WAIT
	@echo "$(PROJ)" build options:
	@echo "CFLAGS   = $(CFLAGS)"
	@echo "CXXFLAGS = $(CXXFLAGS)"
	@echo "LDFLAGS  = $(LDFLAGS)"
	@echo "OPT_FLAGS= $(OPT_FLAGS)"
	@echo "CC       = $(CC)"
	@echo "CXX      = $(CXX)"

config.h:
	cp config.def.h $@

$(DIR_OBJ)/%.$(OBJ_EXT)  : sub/imgui/%.cpp | prepare
	$(cxx-command) -Isub/imgui
$(DIR_OBJ)/%.$(OBJ_EXT)  : sub/imgui/backends/%.cpp | prepare
	$(cxx-command) -Isub/imgui
$(DIR_OBJ)/%.$(OBJ_EXT)  : sub/imgui/misc/cpp/%.cpp | prepare
	$(cxx-command) -Isub/imgui

$(DIR_OBJ)/shaders/%.vert.spv: assets/shaders/%.vert | prepare
	$(GLSLC) $^ -o $@
$(DIR_OBJ)/shaders/%.frag.spv: assets/shaders/%.frag | prepare
	$(GLSLC) $^ -o $@

$(DIR_OBJ)/%.$(OBJ_EXT)  : src/%.c | prepare
	$(cc-command) $(FLG_PKE)
$(DIR_OBJ)/%.$(OBJ_EXT)  : embed/%.c | prepare
	$(cc-command) $(FLG_PKE)
$(DIR_OBJ)/%.$(OBJ_EXT)  : editor/%.c | prepare
	$(cc-command) $(FLG_PKE)
$(DIR_OBJ)/%.$(OBJ_EXT)  : tests/%.c | prepare
	$(cc-command) $(FLG_TST)

$(DIR_OBJ)/%.$(OBJ_EXT)  : src/%.cpp | prepare
	$(cxx-command) $(FLG_PKE)
$(DIR_OBJ)/%.$(OBJ_EXT)  : embed/%.cpp | prepare
	$(cxx-command) $(FLG_PKE)
$(DIR_OBJ)/%.$(OBJ_EXT)  : editor/%.cpp | prepare
	$(cxx-command) $(FLG_EDT)
$(DIR_OBJ)/%.$(OBJ_EXT)  : example/%.cpp | prepare
	$(cxx-command) $(FLG_MPL)
$(DIR_OBJ)/%.$(OBJ_EXT)  : runtime/%.cpp | prepare
	$(cxx-command) $(FLG_RUN)
$(DIR_OBJ)/%.$(OBJ_EXT)  : tests/%.cpp | prepare
	$(cxx-command) $(FLG_TST)

$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui_demo.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui_draw.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui_tables.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui_widgets.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui_impl_glfw.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui_impl_vulkan.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/imgui_stdlib.$(OBJ_EXT)
$(DIR_OBJ)/libpke-imgui.$(LIB_EXT): $(DIR_OBJ)/vendor-imgui-ext.$(OBJ_EXT)
	ar rc $@ $^
	ranlib $@

# -j$$((`nproc`-1))
$(DIR_OBJ)/libpke-bullet3.$(LIB_EXT):
	(cd sub/bullet3/build3 && ./premake4_linux64 gmake)
	${MAKE} no-demos=1 no-extras=1 no-test=1 config=$(BLT_BUILD_MODE) -C sub/bullet3/build3/gmake \
	BulletDynamics BulletCollision LinearMath Bullet3Common Bullet3Geometry
	ar rc $@ sub/bullet3/build3/gmake/obj/x64/$(BLT_BUILD_DIR)/*/*.o
	ranlib $@

$(DIR_OBJ)/libpke.$(LIB_EXT): $(DST_SHADERS)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/arg-handler.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/asset-manager.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/audio.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/audio-impl-pw.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/audio-impl-shared.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/camera.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/dynamic-array.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/ecs.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/embedded-fonts.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/entities.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/font.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/game-settings.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/game.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/helpers.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/level-types.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/level.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/math-helpers.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/physics.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/player-input.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/plugins.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/project-settings.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/project.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/scene.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/serialization.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/serialization-camera.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/serialization-component.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/serialization-font.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/serialization-input.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/serialization-static-ui.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/static-cube.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/static-plane.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/static-ui.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/thread-pool.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/vendor-cgltf-include.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/vendor-pkh-include.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/vendor-stb-image-include.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/vendor-tinyfiledialogs.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT): $(DIR_OBJ)/window.$(OBJ_EXT)
$(DIR_OBJ)/libpke.$(LIB_EXT):
	ar rc $@ $(filter %.$(OBJ_EXT),$^)
	ranlib $@

$(DIR_OBJ)/libpke-editor.$(LIB_EXT): $(DIR_OBJ)/editor-types.$(OBJ_EXT)
$(DIR_OBJ)/libpke-editor.$(LIB_EXT): $(DIR_OBJ)/editor-io.$(OBJ_EXT)
$(DIR_OBJ)/libpke-editor.$(LIB_EXT): $(DIR_OBJ)/editor-plugin.$(OBJ_EXT)
$(DIR_OBJ)/libpke-editor.$(LIB_EXT): $(DIR_OBJ)/editor.$(OBJ_EXT)
$(DIR_OBJ)/libpke-editor.$(LIB_EXT):
	ar rc $@ $(filter %.$(OBJ_EXT),$^)
	ranlib $@

$(DIR_OBJ)/libpke-editor.$(OBJ_EXT): $(DIR_OBJ)/libpke-editor.$(LIB_EXT)
$(DIR_OBJ)/libpke-editor.$(OBJ_EXT): /home/pikum/build/msdf-atlas-gen/dbg/msdf-atlas-gen.a
$(DIR_OBJ)/libpke-editor.$(OBJ_EXT): /home/pikum/build/msdfgen/dbg/msdfgen.a
	$(CXX) -shared -Wl,-soname,libpke-editor.$(OBJ_EXT).$(PKE_VERSION_MAJ).$(PKE_VERSION_MIN) -o $@ -Wl,--whole-archive $^ -Wl,--no-whole-archive $(LDFLAGS)

$(DIR_OBJ)/libpke-example.$(LIB_EXT): $(DIR_OBJ)/example.$(OBJ_EXT)
	ar rc $@ $(filter %.$(OBJ_EXT),$^)
	ranlib $@

$(DIR_OBJ)/libpke-test.$(LIB_EXT): $(DIR_OBJ)/pke-test-dummy.$(OBJ_EXT)
$(DIR_OBJ)/libpke-test.$(LIB_EXT): $(DIR_OBJ)/pke-test-audio.$(OBJ_EXT)
$(DIR_OBJ)/libpke-test.$(LIB_EXT): $(DIR_OBJ)/pke-test-static-ui.$(OBJ_EXT)
$(DIR_OBJ)/libpke-test.$(LIB_EXT): $(DIR_OBJ)/pke-test-serialization.$(OBJ_EXT)
$(DIR_OBJ)/libpke-test.$(LIB_EXT): $(DIR_OBJ)/pke-test-asset-manager.$(OBJ_EXT)
	ar rcs $@ $(filter %.$(OBJ_EXT),$^)

$(DIR_EXE)/pke-editor: $(DIR_OBJ)/libpke-editor.$(LIB_EXT) $(DIR_OBJ)/libpke.$(LIB_EXT) $(DIR_OBJ)/libpke-imgui.$(LIB_EXT) $(DIR_OBJ)/libpke-bullet3.$(LIB_EXT)
$(DIR_EXE)/pke-editor: $(DIR_OBJ)/editor-main.$(OBJ_EXT)
	$(CXX) -v -std=c++23 $(OPT_FLAGS) $(INCS) $^ /home/pikum/build/msdf-atlas-gen/dbg/msdf-atlas-gen.a /home/pikum/build/msdfgen/dbg/msdfgen.a $(LDFLAGS) $(CXXFLAGS) -o $@

$(DIR_EXE)/pke-runtime: $(DIR_OBJ)/libpke.$(LIB_EXT) $(DIR_OBJ)/libpke-bullet3.$(LIB_EXT) $(DIR_OBJ)/libpke-imgui.$(LIB_EXT)
$(DIR_EXE)/pke-runtime: $(DIR_OBJ)/runtime.$(OBJ_EXT)
	@echo $^
	$(CXX) -v -std=c++23 $(CXXFLAGS) $(OPT_FLAGS) $(INCS) $(DIR_OBJ)/runtime.$(OBJ_EXT) -Lobj -Wl,--whole-archive $(DIR_OBJ)/libpke.$(LIB_EXT) $(DIR_OBJ)/libpke-bullet3.$(LIB_EXT) $(DIR_OBJ)/libpke-imgui.$(LIB_EXT) -Wl,--no-whole-archive -ldl $(LDFLAGS) -o $@

$(DIR_EXE)/pke-test: $(DIR_OBJ)/libpke-test.$(LIB_EXT) $(DIR_OBJ)/libpke.$(LIB_EXT) $(DIR_OBJ)/libpke-imgui.$(LIB_EXT) $(DIR_OBJ)/libpke-bullet3.$(LIB_EXT)
$(DIR_EXE)/pke-test: $(DIR_OBJ)/pke-test.$(OBJ_EXT)
	@echo $^
	$(CXX) -v -std=c++23 $(OPT_FLAGS) $(INCS) $^ $(LDFLAGS) $(CXXFLAGS) -o $@

.PHONY: print
print:
	@echo $(FILES_BIN_H)
	@echo $(FILES_BIN_GCH)

.PHONY: clean
clean:
	rm -rf .cache
	rm -f *.o *.so *.plist config.h $(FILES_BIN_GCH)
	rm -rf ./$(DIR_EXE_release) ./$(DIR_EXE_release-debug) ./$(DIR_EXE_debug) ./$(DIR_OBJ)

.PHONY: dist install uninstall