Patch:Press any key

The 'Press any key' function in Keen Vorticons is used by the save game windows (and in Keen 3 the BwB messages.) to display a small graphic and wait for the player to press a key. Calling this function will make the graphic appear and animate and the game to pause until any key is pressed.

There is also a second, slightly different, function is used by the C T Space and Patch:G O D Cheats. The two are independent.

Graphic

This is the little twirling blue circle displayed at the very end of the message. it waits for Keen to press a key. By default the graphic is an 8x8 tile, with four frames of animation. The two functions differ in how they produce this however. The cheats function starts with a tile, then animates until it reaches the tile before another tile. By default these values are $09 and $0D, so the animation is $09, $0A, $0B and $0C. The animation speed can also be altered.

The savegame function however simply has a start tile and a number of animation frames.

Keen 1

#Press any key graphic -Cheats
%patch $626E [$09] #Animation start
%patch $62A7 [$0D] #Animation end + 1
%patch $628B [$05] #Animation speed

#Press any key graphic -Savegame
%patch $B198 [$09] #Tile used
%patch $B204 [$04] #Number of animation frames

Keen 2

#Press any key graphic -Cheats
%patch $2841 [$09] #Animation start
%patch $287A [$0D] #Animation end + 1
%patch $285E [$05] #Animation speed

#Press any key graphic -Savegame
%patch $A8B1 [$09] #Tile used
%patch $A91D [$04] #Number of animation frames

Keen 3

#Press any key graphic -Cheats
%patch $27E0 [$09] #Animation start
%patch $2817 [$0D] #Animation end + 1
%patch $27FD [$05] #Animation speed

#Press any key graphic -Savegame
%patch $BC12 [$09] #Tile used
%patch $BC7B [$04] #Number of animation frames

No graphic

Setting the tile to $20 with 1 frame of animation will make the graphic indistinguishable froma normal window background, in effect removing the graphic.

Keen 1

#Press any key graphic invisible - cheats
%patch $626E [$20] #Animation start
%patch $62A7 [$21] #Animation end + 1

#Press any key graphic invisible - Savegame
%patch $B198 [$20] #Tile used
%patch $B204 [$01] #Number of animation frames

Keen 2

#Press any key graphic invisible - cheats
%patch $2841 [$20] #Animation start
%patch $287A [$21] #Animation end + 1

#Press any key graphic invisible - Savegame
%patch $A8B1 [$20] #Tile used
%patch $A91D [$01] #Number of animation frames

Keen 3

#Press any key graphic invisible - cheats
%patch $27E0 [$20] #Animation start
%patch $2817 [$21] #Animation end + 1

#Press any key graphic invisible - Savegame
%patch $BC12 [$20] #Tile used
%patch $BC7B [$01] #Number of animation frames