Thinking of a 1K hires game .....
Thinking of a 1K hires game .....
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
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
Re: Thinking of a 1K hires game .....
Graphical card King of hearts on a 1K hires game.
A bit different than the ZX Spectrum version, but it saves a lot of memory.
Other cards are done too.
.A bit different than the ZX Spectrum version, but it saves a lot of memory.
Other cards are done too.
Re: Thinking of a 1K hires game .....
Superb! I can't wait to see your next masterpiece
Re: Thinking of a 1K hires game .....
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.
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.
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Re: Thinking of a 1K hires game .....
Like
Mark
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
Re: Thinking of a 1K hires game .....
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.
Next step is to do the generating while displaying.
Now a single card is displayed. Next step complete screen of placed cards.
Re: Thinking of a 1K hires game .....
Cardgeneration during screenrefresh is a tough job to do....
Still short in time and memory ...
Still short in time and memory ...
Re: Thinking of a 1K hires game .....
It looks like the fieldarea can be displayed within 1 screen, but now the stack must be added. Timing remains an issue....
Re: Thinking of a 1K hires game .....
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$
Display will start with fake cards, creating a screen$
Re: Thinking of a 1K hires game .....
And the playfield when started