# Pepy by @ohsqueezy [ohsqueezy.itch.io]

#######################
# Location parameters #
#######################

# Location of project specific source files
SRC_DIR := src/

# Locations of [SPACE BOX] source and dependencies required to be compiled from source. These
# locations are configured to match the structure of the [SPACE BOX] repository but can be
# modified as necessary.
SB_DIR := lib/sb/
SB_SRC_DIR := $(SB_DIR)src/
SB_LIB_DIR := $(SB_DIR)lib/
SDLGFX2_DIR := $(SB_LIB_DIR)sdl2-gfx/
GLEW_DIR := $(SB_LIB_DIR)glew/

# C and C++ compiler commands
CC := clang
CXX := clang++

# Location of SDL config program
SDLCONFIG := $(HOME)/local/sdl/bin/sdl2-config

# Edit to point to the location of BPmono.ttf
CREATE_FONT_SYMLINK := ln -nsf $(SB_DIR)"BPmono.ttf" .

#############################
# Based on above parameters #
#############################

SDL_CFLAGS = $(shell $(SDLCONFIG) --cflags)
SDL_LFLAGS := $(shell $(SDLCONFIG) --libs)
SB_H_FILES := $(wildcard $(addprefix $(SB_SRC_DIR),*.hpp))
SB_O_FILES := $(filter-out $(addprefix $(SB_SRC_DIR),filesystem.o),$(SB_H_FILES:.hpp=.o))
SRC_H_FILES := $(wildcard $(addprefix $(SRC_DIR),*.hpp))
SRC_O_FILES := $(SRC_H_FILES:.hpp=.o)

#####################################################################
# Targets for building [SPACE BOX], dependencies and project source #
#####################################################################

$(SDLGFX2_DIR)%.o: $(SDLGFX2_DIR)%.c $(SDLGFX2_DIR)%.h
$(GLEW_DIR)%.o: $(GLEW_DIR)%.c $(GLEW_DIR)%.h
	$(CC) $< $(CFLAGS) -c -o $@

$(SB_SRC_DIR)extension.o : $(addprefix $(SB_SRC_DIR),Box.hpp Segment.hpp Color.hpp filesystem.hpp Pixels.hpp Log.hpp)
$(SB_SRC_DIR)Node.o : $(addprefix $(SB_SRC_DIR),Game.hpp Configuration.hpp Delegate.hpp Display.hpp Input.hpp Box.hpp Audio.hpp Log.hpp)
$(SB_SRC_DIR)Sprite.o : $(addprefix $(SB_SRC_DIR),Node.hpp Game.hpp Box.hpp Animation.hpp Color.hpp extension.hpp Pixels.hpp Log.hpp)
$(SB_SRC_DIR)Game.o : $(addprefix $(SB_SRC_DIR),extension.hpp Node.hpp Sprite.hpp Recorder.hpp Input.hpp Configuration.hpp \
	Delegate.hpp Audio.hpp Log.hpp)
$(SB_SRC_DIR)Animation.o : $(addprefix $(SB_SRC_DIR),Node.hpp Timer.hpp)
$(SB_SRC_DIR)Recorder.o : $(addprefix $(SB_SRC_DIR),Node.hpp Game.hpp Configuration.hpp Delegate.hpp Animation.hpp extension.hpp)
$(SB_SRC_DIR)Input.o : $(addprefix $(SB_SRC_DIR),Node.hpp Animation.hpp Configuration.hpp Delegate.hpp)
$(SB_SRC_DIR)Configuration.o : $(addprefix $(SB_SRC_DIR),Node.hpp Animation.hpp Log.hpp)
$(SB_SRC_DIR)Delegate.o : $(addprefix $(SB_SRC_DIR),Node.hpp Game.hpp Input.hpp)
$(SB_SRC_DIR)Display.o : $(addprefix $(SB_SRC_DIR),Node.hpp Game.hpp Box.hpp Configuration.hpp Delegate.hpp Log.hpp)
$(SB_SRC_DIR)Box.o : $(addprefix $(SB_SRC_DIR),extension.hpp Segment.hpp)
$(SB_SRC_DIR)Segment.o : $(addprefix $(SB_SRC_DIR),extension.hpp Box.hpp)
$(SB_SRC_DIR)Pixels.o : $(addprefix $(SB_SRC_DIR),Box.hpp extension.hpp Log.hpp utility.hpp)
$(SB_SRC_DIR)Audio.o : $(addprefix $(SB_SRC_DIR),Node.hpp Display.hpp Configuration.hpp Box.hpp filesystem.hpp extension.hpp)
$(SB_SRC_DIR)GLObject.o : $(addprefix $(SB_SRC_DIR),Log.hpp)
$(SB_SRC_DIR)Texture.o : $(addprefix $(SB_SRC_DIR),GLObject.hpp filesystem.hpp Log.hpp)
$(SB_SRC_DIR)VBO.o : $(addprefix $(SB_SRC_DIR),Log.hpp GLObject.hpp Attributes.hpp extension.hpp)
$(SB_SRC_DIR)Attributes.o : $(addprefix $(SB_SRC_DIR),Log.hpp extension.hpp)
$(SRC_DIR)Pepy.o : $(SRC_H_FILES) $(SB_H_FILES)
%.o : %.cpp %.hpp
	$(CXX) $< $(CPP_FLAGS) -c -o $@

###############
# Linux build #
###############

pepy :	CFLAGS = -g -Wall -Wextra -O0 -fPIE -c -I$(SB_LIB_DIR) -I$(SB_SRC_DIR) $(SDL_CFLAGS)
pepy :	CPP_FLAGS = $(CFLAGS) --std=c++17
pepy :	LFLAGS = $(SDL_LFLAGS) -fPIE -lpthread -lGL -lGLESv2 -lSDL2_image -lSDL2_ttf -lSDL2_mixer -lstdc++fs
pepy : $(GLEW_DIR)glew.o $(addprefix $(SDLGFX2_DIR),SDL2_rotozoom.o SDL2_gfxPrimitives.o) \
	$(SB_O_FILES) $(SRC_O_FILES)
	$(CREATE_FONT_SYMLINK)
	$(CXX) $^ $(LFLAGS) -D__LINUX__ -o pepy

#############
# Web build #
#############

# Use Emscripten to output JavaScript and an HTML index page for running in the browser

EMSCRIPTENHOME = $(HOME)/ext/software/emsdk/upstream/emscripten
EMSCRIPTEN_CFLAGS = -O3 -Wall -s USE_SDL=2 -s USE_SDL_IMAGE=2 -s SDL2_IMAGE_FORMATS="['png']" -s USE_SDL_TTF=2 \
	-s USE_SDL_MIXER=2 -s SDL2_MIXER_FORMATS="['ogg','mp3']" -s USE_OGG=1 -s USE_VORBIS=1 -s USE_MPG123=1 \
	-s USE_MODPLUG=1 --no-heap-copy -I$(SB_LIB_DIR) -I$(SB_SRC_DIR)
EMSCRIPTEN_LFLAGS = -s MIN_WEBGL_VERSION=2 -s EXPORTED_FUNCTIONS="['_main']" -s ALLOW_MEMORY_GROWTH=1 -s FULL_ES3=1 --shell-file shell.html
EMSCRIPTEN_PRELOADS = --preload-file "BPmono.ttf"@/ --preload-file "config.json"@/ --preload-file "resource/"@/"resource/" \
	--preload-file "src/shader.vert"@/"src/" --preload-file "src/shader.frag"@/"src/"

index.html : CC = $(EMSCRIPTENHOME)/emcc
index.html : CXX = $(EMSCRIPTENHOME)/em++
index.html : CFLAGS = $(EMSCRIPTEN_CFLAGS)
index.html : CPP_FLAGS = $(CFLAGS) --std=c++17
index.html : $(addprefix $(SDLGFX2_DIR),SDL2_rotozoom.o SDL2_gfxPrimitives.o) $(SB_O_FILES) $(SRC_O_FILES)
	$(CREATE_FONT_SYMLINK)
	$(CXX) $^ $(CPP_FLAGS) $(EMSCRIPTEN_LFLAGS) $(EMSCRIPTEN_PRELOADS) -o "index.html"

#########################
# Clean up object files #
#########################

clean :
	-rm $(SRC_DIR)*.o

clean-all :
	-find . -iname "*.o" -exec rm {} \;

#############
# compiledb #
#############

# Generate a clang JSON compilation database file. This can be useful for example for code completion. It requires a
# compiledb binary (https://pypi.org/project/compiledb/). It should be generated manually every time a file is added,
# renamed, or the compilation flags change. The generated database is based on the Linux build.

PATH_TO_COMPILEDB = $(HOME)/.local/bin/compiledb
compiledb :
	-$(PATH_TO_COMPILEDB) -n make linux -k

#####################
# cross compilation #
#####################

# WARNING: untested

# Below assignments and targets are necessary for cross-compiling to Android, web (via emscripten), Windows (via mingw),
# and OS/X, but cross-compilation targets have not been tested in a while and won't compile without significant changes.

BUILDDIR := build
SDLHOME := $(EXT_SRC_ROOT)/SDL2-2.0.14
SDL_IMG_HOME := $(EXT_SRC_ROOT)/SDL2_image-2.0.4
SDL_TTF_HOME := $(EXT_SRC_ROOT)/SDL2_ttf-2.0.14
GLEW_WIN32_HOME = $(EXT_SRC_ROOT)/glew-2.1.0-win32
PROJECTHOME = $(shell pwd)
WINBUILDDIR = win
SDLMINGWHOME = $(SDLHOME)/i686-w64-mingw32
SDL_IMG_MINGW_HOME = $(SDL_IMG_HOME)/i686-w64-mingw32
SDL_TTF_MINGW_HOME = $(SDL_TTF_HOME)/i686-w64-mingw32
APPDIR = Main.app/Contents
SYSFWPATH = /Library/Frameworks

android :
	if [ ! -d $(BUILDDIR) ]; then mkdir $(BUILDDIR); fi;
	cd $(SDLHOME)/build-scripts/ && \
	./androidbuild.sh $(ANDROIDPROJECT) $(PROJECTHOME)/main.cpp
	cp -r $(SDLHOME)/build/$(ANDROIDPROJECT) $(BUILDDIR)
	sed -i s/2\.3\.3/2\.2\.3/g $(BUILDDIR)/$(ANDROIDPROJECT)/build.gradle
	sed -i s/26\.0\.1/23\.0\.1/g $(BUILDDIR)/$(ANDROIDPROJECT)/app/build.gradle
	cd $(BUILDDIR)/$(ANDROIDPROJECT) && ./gradlew assembleDebug

mingw :
	if [ ! -d $(BUILDDIR)/$(WINBUILDDIR) ]; then mkdir -p $(BUILDDIR)/$(WINBUILDDIR); fi;
	cd $(BUILDDIR)/$(WINBUILDDIR) && \
	i686-w64-mingw32-g++ -std=c++17 $(PROJECTHOME)/main.cpp -I$(SDLMINGWHOME)/include/SDL2 \
	-I$(SDL_IMG_MINGW_HOME)/include/SDL2 -I$(SDL_TTF_MINGW_HOME)/include/SDL2 $(INC) \
	$(PROJECTHOME)/sdl2-gfx/SDL2_gfxPrimitives.c $(PROJECTHOME)/sdl2-gfx/SDL2_rotozoom.c $(PROJECTHOME)/glew/glew.c \
	-L$(SDLMINGWHOME)/lib -L$(SDL_IMG_MINGW_HOME)/lib -L$(SDL_TTF_MINGW_HOME)/lib \
	-lmingw32 -lSDL2_image \
	-lSDL2_ttf -lstdc++fs \
	-lSDL2main -lSDL2 -lopengl32 -Wall -O2 -o main.exe && \
	cp $(SDLMINGWHOME)/bin/SDL2.dll $(SDL_IMG_MINGW_HOME)/bin/SDL2_image.dll \
	$(SDL_TTF_MINGW_HOME)/bin/SDL2_ttf.dll .

osx :
	g++ -I $(SYSFWPATH)/SDL2.framework/Headers $(INC) \
	-I $(SYSFWPATH)/SDL2_image.framework/Headers -Wl,-rpath,$(SYSFWPATH) \
	-framework SDL2 -framework SDL2_image -framework OpenGL main.cpp sdl2-gfx/SDL2_rotozoom.c \
	-o main

osx-bundle :
	if [ ! -d "$(APPDIR)" ]; then mkdir -p $(APPDIR); fi;
	if [ ! -d "$(APPDIR)" ]; then mkdir $(APPDIR); fi;
	if [ ! -d "$(APPDIR)/MacOS" ]; then mkdir $(APPDIR)/MacOS; fi;
	if [ ! -d "$(APPDIR)/Frameworks" ]; then mkdir $(APPDIR)/Frameworks; fi;
	if [ ! -d "$(APPDIR)/Resources" ]; then mkdir $(APPDIR)/Resources; fi;
	touch $(APPDIR)/Info.plist
	cp -r $(SYSFWPATH)/SDL2.framework $(APPDIR)/Frameworks
	cp -r $(SYSFWPATH)/SDL2_image.framework $(APPDIR)/Frameworks
	g++ -I $(SYSFWPATH)/SDL2.framework/Headers -I $(SYSFWPATH)/SDL2_image.framework/Headers \
	-Wl,-rpath,@executable_path/../Frameworks -Wl,-rpath,$(SYSFWPATH) \
	-framework SDL2 -framework SDL2_image -framework OpenGL main.cpp -o $(APPDIR)/MacOS/main

cross : linux android emscripten mingw