#         /\         +--------------------------------------------------------------+ 
#    ____/  \____   /| - zlib/MIT/Unlicenced game framework licensed to freely use, |
#    \          /  / |   copy, modify and sell without restriction                  |
#  +--\ ^__^   /--+  |                                                              |
#  | ~/        \~ |  | - originally created at [http://nugget.fun]                  |
#  | ~~~~~~~~~~~~ |  +--------------------------------------------------------------+
#  | SPACE ~~~~~  | /                                                                              
#  |  ~~~~~~~ BOX |/                                                                               
#  +--------------+                                                                             
# 
#  [ Makefile for 2D collision demo ]
#
#  This should build the 2D collision demo for Linux. Compilation to other platforms
#  hasn't been attempted yet.
#
#  Edit the parameters as necessary and run `make linux` in the current directory.
#

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

# Location of source files for the demo
SRC_DIR := ./

# 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 := ../../
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
CPPC := clang++

# Location of SDL config program
SDLCONFIG := ~/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 #
#############################

CFLAGS := -Wall -O0 -c -I$(SB_LIB_DIR) -I$(SB_SRC_DIR) -g $(shell $(SDLCONFIG) --cflags)
CPP_FLAGS := $(CFLAGS) --std=c++17
LFLAGS := $(shell $(SDLCONFIG) --libs) -lpthread
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 demo 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)
$(SB_SRC_DIR)Node.o : $(addprefix $(SB_SRC_DIR),Game.hpp Configuration.hpp Delegate.hpp Display.hpp Input.hpp Box.hpp Audio.hpp)
$(SB_SRC_DIR)Sprite.o : $(addprefix $(SB_SRC_DIR),Node.hpp Game.hpp Box.hpp Animation.hpp Color.hpp extension.hpp Pixels.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)
$(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)
$(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)
$(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)
$(SB_SRC_DIR)Audio.o : $(addprefix $(SB_SRC_DIR),Node.hpp Display.hpp Configuration.hpp Box.hpp filesystem.hpp extension.hpp)
$(SRC_DIR)CollisionTest.o : $(SB_H_FILES)
%.o : %.cpp %.hpp
	$(CPPC) $(CPP_FLAGS) $< -c -o $@

##########################
# Target for Linux build #
##########################

linux : $(GLEW_DIR)glew.o $(addprefix $(SDLGFX2_DIR),SDL2_rotozoom.o SDL2_gfxPrimitives.o) \
	$(SB_O_FILES) CollisionTest.o
	$(CREATE_FONT_SYMLINK)
	$(CPPC) $(LFLAGS) -D__LINUX__ -lGL -lSDL2_image -lSDL2_ttf -lSDL2_mixer -lstdc++fs $^ -o 2d_collision

#######################################
# Target for cleaning up object files #
#######################################

clean :
	- rm *.o
	- rm $(SB_SRC_DIR)*.o
	- rm $(GLEW_DIR)*.o
	- rm $(SDLGFX2_DIR)*.o