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‎README.md‎

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# SlitherlinkNX
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## Introduction
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Slitherlink is a logic puzzle game created in 1989 by Japanese publisher Nikoli,
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famous for creating Sudoku, among many other puzzle games.
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See https://en.wikipedia.org/wiki/Slitherlink for more info.
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I discovered the game a few years ago on the Nintendo DS with 'Puzzle Series
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Vol. 5: Slitherlink', which was never released outside of Japan. It's such a
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good game I became addicted to it, just like with Picross and Nurikabe.
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This is my version of the game for the Nintendo Switch. It's a rewrite of one
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of my previous projects for the Dingoo A320. It features 456 levels in four
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sizes: 5x5 (easy), 7x7, 10x10, 20x20 (hard). There's also a save state function,
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undo button, and more.
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## Rules
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In SlitherlinkNX, you draw lines on a grid to create a meandering path, following
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the rules:
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* The path must form a __single loop__, without crossing itself or branching.
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* The numbers indicate how many lines surround each cell. Empty cells may be
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surrounded by any number of lines.
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There is one unique solution for each level.
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You can draw small x's on segments that cannot be connected.
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You should be able to find the solution by logical deduction only, without guessing.
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For Slitherlink beginners, I strongly recommend to consult the Wikipedia page,
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especially chapter 'Solution methods', which is a big help at the start:
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https://en.wikipedia.org/wiki/Slitherlink#Solution_methods
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## Controls
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* d-pad / analog stick: move cursor
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* X/A/B/Y: draw a line, then a cross, then nothing, in the corresponding direction
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* L + X/A/B/Y: draw a cross, then a line, then nothing, in the corresponding direction
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* R: undo previous action
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* +: open menu, allowing to: retry, save state, or quit
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## Installation
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Download the latest release, unpack, and copy directory 'SlitherlinkNX' to the
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SD card, in /switch/. Then, launch with the homebrew menu.
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## Compilation
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You'll need devkitpro, and the packages switch-sdl2, switch-sdl2_image,
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switch-sdl2_mixer. Then: 'make -f makefile.switch'.
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It's based on SDL2, so it can be built for PC too.
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## History
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v1.0: First release
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## Credits
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* Development: Tardigrade (http://beyondds.free.fr/)
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* Original game: Nikoli (http://www.nikoli.com/)
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* Puzzles: Krazydad (http://www.krazydad.com/slitherlink/)
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* Font: Chopin Script
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* Sounds: Junggle
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* Background: aopsan

‎icon.jpg‎

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‎makefile.linux‎

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OBJS = $(wildcard src/*.cpp)
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CC = g++
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COMPILER_FLAGS = -Wall
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LINKER_FLAGS = -lSDL2 -lSDL2_image -lSDL2_mixer
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OBJ_NAME = SlitherlinkNX
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all : $(OBJS)
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$(CC) $(OBJS) -o $(OBJ_NAME) $(COMPILER_FLAGS) $(LINKER_FLAGS)
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clean :
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rm -f $(OBJ_NAME)

‎makefile.switch‎

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#---------------------------------------------------------------------------------
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.SUFFIXES:
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(DEVKITPRO)),)
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$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
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endif
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TOPDIR ?= $(CURDIR)
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include $(DEVKITPRO)/libnx/switch_rules
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#---------------------------------------------------------------------------------
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# TARGET is the name of the output
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# BUILD is the directory where object files & intermediate files will be placed
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# SOURCES is a list of directories containing source code
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# DATA is a list of directories containing data files
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# INCLUDES is a list of directories containing header files
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# EXEFS_SRC is the optional input directory containing data copied into exefs, if anything this normally should only contain "main.npdm".
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# ROMFS is the directory containing data to be added to RomFS, relative to the Makefile (Optional)
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#
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# NO_ICON: if set to anything, do not use icon.
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# NO_NACP: if set to anything, no .nacp file is generated.
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# APP_TITLE is the name of the app stored in the .nacp file (Optional)
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# APP_AUTHOR is the author of the app stored in the .nacp file (Optional)
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# APP_VERSION is the version of the app stored in the .nacp file (Optional)
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# APP_TITLEID is the titleID of the app stored in the .nacp file (Optional)
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# ICON is the filename of the icon (.jpg), relative to the project folder.
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# If not set, it attempts to use one of the following (in this order):
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# - <Project name>.jpg
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# - icon.jpg
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# - <libnx folder>/default_icon.jpg
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#---------------------------------------------------------------------------------
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TARGET := $(notdir $(CURDIR))
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BUILD := build
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SOURCES := src
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# DATA := data
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INCLUDES := src
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EXEFS_SRC := exefs_src
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ROMFS := res
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APP_TITLE := SlitherlinkNX
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APP_AUTHOR := Tardigrade
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APP_VERSION := 1.0
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#---------------------------------------------------------------------------------
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# options for code generation
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#---------------------------------------------------------------------------------
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ARCH := -march=armv8-a -mtune=cortex-a57 -mtp=soft -fPIE
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CFLAGS := -g -Wall -O2 -ffunction-sections \
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$(ARCH) $(DEFINES)
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CFLAGS += $(INCLUDE) -D__SWITCH__
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
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ASFLAGS := -g $(ARCH)
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LDFLAGS = -specs=$(DEVKITPRO)/libnx/switch.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
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LIBS := -lSDL2_image -lSDL2_mixer -lSDL2 -lpng -lz -ljpeg -lEGL -lglapi -ldrm_nouveau -lnx -lmodplug -lmpg123 -lvorbisidec -logg
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#---------------------------------------------------------------------------------
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# list of directories containing libraries, this must be the top level containing
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# include and lib
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#---------------------------------------------------------------------------------
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LIBDIRS := $(PORTLIBS) $(LIBNX)
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#---------------------------------------------------------------------------------
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# no real need to edit anything past this point unless you need to add additional
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# rules for different file extensions
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#---------------------------------------------------------------------------------
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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#---------------------------------------------------------------------------------
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export OUTPUT := $(CURDIR)/$(TARGET)
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export TOPDIR := $(CURDIR)
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export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
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$(foreach dir,$(DATA),$(CURDIR)/$(dir))
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export DEPSDIR := $(CURDIR)/$(BUILD)
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CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
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CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
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SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
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BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
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#---------------------------------------------------------------------------------
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# use CXX for linking C++ projects, CC for standard C
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(CPPFILES)),)
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#---------------------------------------------------------------------------------
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export LD := $(CC)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export LD := $(CXX)
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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export OFILES_BIN := $(addsuffix .o,$(BINFILES))
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export OFILES_SRC := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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export OFILES := $(OFILES_BIN) $(OFILES_SRC)
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export HFILES_BIN := $(addsuffix .h,$(subst .,_,$(BINFILES)))
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export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I$(CURDIR)/$(BUILD)
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export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
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export BUILD_EXEFS_SRC := $(TOPDIR)/$(EXEFS_SRC)
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ifeq ($(strip $(ICON)),)
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icons := $(wildcard *.jpg)
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ifneq (,$(findstring $(TARGET).jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/$(TARGET).jpg
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else
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ifneq (,$(findstring icon.jpg,$(icons)))
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export APP_ICON := $(TOPDIR)/icon.jpg
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endif
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endif
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else
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export APP_ICON := $(TOPDIR)/$(ICON)
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endif
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ifeq ($(strip $(NO_ICON)),)
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export NROFLAGS += --icon=$(APP_ICON)
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endif
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ifeq ($(strip $(NO_NACP)),)
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export NROFLAGS += --nacp=$(CURDIR)/$(TARGET).nacp
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endif
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ifneq ($(APP_TITLEID),)
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export NACPFLAGS += --titleid=$(APP_TITLEID)
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endif
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ifneq ($(ROMFS),)
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export NROFLAGS += --romfsdir=$(CURDIR)/$(ROMFS)
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endif
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.PHONY: $(BUILD) clean all
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#---------------------------------------------------------------------------------
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all: $(BUILD)
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$(BUILD):
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@[ -d $@ ] || mkdir -p $@
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@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/makefile.switch
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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@rm -fr $(BUILD) $(TARGET).pfs0 $(TARGET).nso $(TARGET).nro $(TARGET).nacp $(TARGET).elf
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#---------------------------------------------------------------------------------
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else
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.PHONY: all
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DEPENDS := $(OFILES:.o=.d)
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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all : $(OUTPUT).pfs0 $(OUTPUT).nro
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$(OUTPUT).pfs0 : $(OUTPUT).nso
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$(OUTPUT).nso : $(OUTPUT).elf
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ifeq ($(strip $(NO_NACP)),)
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$(OUTPUT).nro : $(OUTPUT).elf $(OUTPUT).nacp
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else
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$(OUTPUT).nro : $(OUTPUT).elf
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endif
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$(OUTPUT).elf : $(OFILES)
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$(OFILES_SRC) : $(HFILES_BIN)
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#---------------------------------------------------------------------------------
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# you need a rule like this for each extension you use as binary data
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#---------------------------------------------------------------------------------
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%.bin.o %_bin.h : %.bin
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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-include $(DEPENDS)
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#---------------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------------

‎makefile.win‎

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OBJS = $(wildcard src/*.cpp)
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CC = g++
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INCLUDE_PATHS = -IC:\mingw_dev_lib\SDL2-2.0.8\i686-w64-mingw32\include \
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-IC:\mingw_dev_lib\SDL2-2.0.8\i686-w64-mingw32\include\SDL2 \
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-IC:\mingw_dev_lib\SDL2_image-2.0.3\i686-w64-mingw32\include \
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-IC:\mingw_dev_lib\SDL2_mixer-2.0.2\i686-w64-mingw32\include
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LIBRARY_PATHS = -LC:\mingw_dev_lib\SDL2-2.0.8\i686-w64-mingw32\lib \
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-LC:\mingw_dev_lib\SDL2_image-2.0.3\i686-w64-mingw32\lib \
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-LC:\mingw_dev_lib\SDL2_mixer-2.0.2\i686-w64-mingw32\lib
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# Add '-Wl,-subsystem,windows' to COMPILER_FLAGS to get rid of the console window
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COMPILER_FLAGS = -Wall
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LINKER_FLAGS = -lmingw32 -lSDL2main -lSDL2 -lSDL2_image -lSDL2_mixer
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OBJ_NAME = SlitherlinkNX
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all : $(OBJS)
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$(CC) $(OBJS) $(INCLUDE_PATHS) $(LIBRARY_PATHS) $(COMPILER_FLAGS) $(LINKER_FLAGS) -o $(OBJ_NAME)
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cp c:/MinGW/bin/libstdc++-6.dll .
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cp c:/mingw_dev_lib/SDL2-2.0.8/i686-w64-mingw32/bin/SDL2.dll .
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cp c:/mingw_dev_lib/SDL2_image-2.0.3/i686-w64-mingw32/bin/*.dll .
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cp c:/mingw_dev_lib/SDL2_mixer-2.0.2/i686-w64-mingw32/bin/*.dll .
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clean :
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rm -f $(OBJ_NAME).exe *.dll

‎res/arrowDown.png‎

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‎res/arrowLeft.png‎

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‎res/arrowRight.png‎

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‎res/arrowUp.png‎

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‎res/background.png‎

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