== C++ Map Generator ==

I'm creating a map generator based on Perlin Noise.

First, we need to install the Libnoise Library as follows

git clone https://github.com/qknight/libnoise
cd libnoise
mkdir build
cd build
cmake ..
make
sudo make install

Note that need to have installed at least g++ and gcc.

Once you've done this, you can erase the libnoise folder.

Now, its time to include it to our program:

#include <noise/noise.h>

using namespace noise;

Makefile as an example to show how to include the library while compiling.

CFLAGS = -o
STD = -std=c++11
CC = g++

MG: main.o 
	$(CC) main.o $(CFLAGS) MG.out -I/usr/local/include -L/usr/local/lib -lnoise

main.o:
	$(CC) $(STD) -c main.cpp

clean:
	rm -f core *.o *.out

Once you've compiled, try to execute the binary. It is possible that you get the following error:

error while loading shared libraries: libnoise.so: cannot open shared object file: No such file or directory

It it is the case, check the value of LD_LIBRARY_PATH environment variable:

echo $LD_LIBRARY_PATH

if there is nothing to be displayed, add the default path value

LD_LIBRARY_PATH=/usr/local/lib
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib/libnoise.so
export LD_LIBRARY_PATH

Then you should be able to run your application.

NOTE: If you are using noiseutils library, do not forget to include noiseutils.cpp into the main file.

Find below some examples

Here are some mono-color examples

Also, an aplication of this library could be a blood moon generator: