Thinking of a 1K hires game .....

[dr beep]

Hello everybody,

next months I will have some spare time and I was thinking of making another 1K hires game.

The ZX81 version of my game THE EDGE for the ZX Spectrum.


The object of the game is to fill the edge with King, Queen, Jack and 'skip' other cards.
You can do that by placing the cards and erase the cards with the sum of 10.
The display is quite similar to MEMORY but the graphical cards will be a challenge.

Greetings Dr Beep

[dr beep]

Graphical card King of hearts on a 1K hires game.

KH.jpg (1.4 KiB) Viewed 2994 times

.

A bit different than the ZX Spectrum version, but it saves a lot of memory.

Other cards are done too.

[sirmorris]

Superb! I can't wait to see your next masterpiece

[dr beep]

Working on the display as we speak.

To make the display correct I need 5 suits; hearts, clubs, diamonds, spades and ... Empty.
The following values are possible
A23456789TJQK and empty
A card can fit in 1 byte. 3 bits for any of the 5 suits and 4 bits for the possible 14 values.
A full deck will cost 52 bytes.
The graphical display is the tricky part.
The trick will be ...
create 4 graphical cards when display starts. Show these cards.
Repeat 5x (4x for playfield, 1x for card to be set)

In this way the graphical screen will cost 192 bytes.
The UDG for the cards are 45 bytes.
Value display is created from the ROM with a nice twist to make it not the ROM character.

A lot of work to do, but a nice challenge for sure.

[1024MAK]

Like

Mark

[dr beep]

Based on the cardvalue (suit and number) all cards can now be generated.
Next step is to do the generating while displaying.
Now a single card is displayed. Next step complete screen of placed cards.

[dr beep]

Cardgeneration during screenrefresh is a tough job to do....
Still short in time and memory ...

[dr beep]

It looks like the fieldarea can be displayed within 1 screen, but now the stack must be added. Timing remains an issue....

[dr beep]

Carddisplay now working, but stack must be added as well as some kind of cursor. Timing is a hard job.

Display will start with fake cards, creating a screen$

edge.jpg (62.98 KiB) Viewed 2836 times

[dr beep]

And the playfield when started

edge.jpg (60.61 KiB) Viewed 2835 times