#required libs and tools:
sudo aptitude install libghc-opengl-dev libghc-sdl-dev make -y
 
#http://sourceforge.net/projects/prboom/files/prboom%20stable/2.5.0/
wget "http://colocrossing.dl.sourceforge.net/project/prboom-plus/prboom-plus/2.5.1.3/prboom-plus-2.5.1.3.tar.gz"
tar -xvf prboom-plus-2.5.1.3.tar.gz
cd prboom-plus-2.5.1.3
./configure

#change how much AMMO is used in each shot
vim +746 src/p_pspr.c

#Sprite Animation and function as defined here:
vim +1257 src/info.h

#speed up shot gun here:
vim +138 src/info.c

#############Example#############
  {SPR_SHT2,0,1,A_WeaponReady,S_DSGUN,0,0}, // S_DSGUN
  {SPR_SHT2,0,1,A_Lower,S_DSGUNDOWN,0,0}, // S_DSGUNDOWN
  {SPR_SHT2,0,1,A_Raise,S_DSGUNUP,0,0}, // S_DSGUNUP
  {SPR_SHT2,0,1,NULL,S_DSGUN2,0,0}, // S_DSGUN1
  {SPR_SHT2,0,1,A_FireShotgun2,S_DSGUN3,0,0}, // S_DSGUN2
  {SPR_SHT2,0,1,NULL,S_DSGUN4,0,0}, // S_DSGUN3
  {SPR_SHT2,0,1,NULL,S_DSGUN5,0,0},  // S_DSGUN4
  {SPR_SHT2,0,1,NULL,S_DSGUN6,0,0}, // S_DSGUN5
  {SPR_SHT2,0,1,NULL,S_DSGUN7,0,0}, // S_DSGUN6
  {SPR_SHT2,0,1,NULL,S_DSGUN8,0,0}, // S_DSGUN7
  {SPR_SHT2,0,1,NULL,S_DSGUN9,0,0}, // S_DSGUN8
  {SPR_SHT2,0,1,NULL,S_DSGUN10,0,0}, // S_DSGUN9
  {SPR_SHT2,0,1,A_ReFire,S_DSGUN,0,0},  // S_DSGUN10
  {SPR_SHT2,0,1,NULL,S_DSNR2,0,0},  // S_DSNR1
  {SPR_SHT2,0,1,NULL,S_DSGUNDOWN,0,0},  // S_DSNR2
  {SPR_SHT2,32776,5,A_Light1,S_DSGUNFLASH2,0,0},  // S_DSGUNFLASH1
  {SPR_SHT2,32777,4,A_Light2,S_LIGHTDONE,0,0},  // S_DSGUNFLASH2