at first, thanks for downloading this game. 
You probably have already played it, and want to edit it now.
Therefore, all the files have to be in the \pfc directory.

The mapedit.prg

With the mapedit.prg you can paint your own level.
With the left mousebutton you can paint the first graphic shown in 
the upper-left corner of the screen, with the right butten you can
paint the second graphic, and with the 'e' key you can put an enemy
into te level. With the left and right cursorkeys you can change
the first graphic you want to use, and with the up and down keys 
the second. With the 'w' and 's' key you can change te enemy. With
the 's' key you can save the map and with the 'l' key you can load
the already saved map again.

Pack1.fpg

When you have created a map, you have to put it into the Pack1.fpg
file. In this file are 3 graphics that are important.

701 - This graphic is a painting of the map. You have to put your
      own map in this number. Each pixel in the map presents a square
      in the level with the graphic in Pack1.fpg of the color of the
      pixel + 100.
801 - This graphic shows in which squares you can walk or not.
      It exist of color 0(nothing) and color 25(a wall). The
      meaning is that there come other things, such as water and
      pits etc.
901 - This graphic shows where the enemies are placed in the level.
      Until now the only enemy is the car-cannon type of enemy.
      It is color 40 in the map. I am planning to make a couple of
      other enemies, which will have the numbers 41-50 for my own
      levels.

The other graphics are (from 100 to 355) the walls, floors etc. of 
the map, and the graphics 1 & 2 are the screen itself.

By modifying the Pack1.fpg, Aliens.fpg and Pfc.fpg or creating your 
own pack files, you can completely alter the game and make whatever
you want, without editing the .prg file. But also, new units are
also made very easily.

IF YOU MAKE ANY NEW LEVELS, UNITS, OR ANYTHING ELSE, PLEASE MAIL IT
TO ME AT martien_de_jong@hotmail.com I WOULD LIKE IT VERY MUCH, EVEN
IF IT IS ONLY A SMALL ALTERATION, ONLY THE FACT THAT YOU TAKE A LOOK
AT IT MAKES ME VERY HAPPY ALREADY.

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