Search found 2060 matches

by dr beep
Fri Dec 09, 2016 10:49 am
Forum: GAMES
Topic: Tims' Checkers
Replies: 9
Views: 4594

Re: Tims' Checkers

The size of the screenmemory might be brought back to/with app. 3K with a different display method.
by dr beep
Fri Dec 02, 2016 1:37 pm
Forum: Development
Topic: Final 1K hires game in progress: Iron Zxlider
Replies: 17
Views: 5709

Re: Final 1K hires game in progress: Iron Zxlider

With bitwise shifting you are almost at topspeed when you start the game. I want to add gameplay over technical achievement so I tested byteswise movement in x-direction (y-direction will always be bitwise in Blocky-method. This give so much potential in speed (slow on start speedier on progress) an...
by dr beep
Thu Dec 01, 2016 7:13 pm
Forum: Development
Topic: Final 1K hires game in progress: Iron Zxlider
Replies: 17
Views: 5709

Re: Final 1K hires game in progress: Iron Zxlider

Screendisplay is like Blocky. First temporary screen already made.

First test on speed of bitwise shifting.

I thought it would be too slow, but the ZX81 is fast enough for it.
by dr beep
Thu Dec 01, 2016 10:14 am
Forum: Development
Topic: Final 1K hires game in progress: Iron Zxlider
Replies: 17
Views: 5709

Final 1K hires game in progress: Iron Zxlider

Well final, after this game I plan to do other things. Still have a project on the ZX Spectrum and I am working on a faster ZX81-emulator for any ZX Spectrum which I want to pick up again. As usual I plan to make a great game from every 10th game. 100 levels in Police Patrol 3 levels of Qbert And no...
by dr beep
Thu Dec 01, 2016 10:00 am
Forum: Development
Topic: New 1K hires game in progress: Artillery Duel
Replies: 36
Views: 9507

Re: New 1K hires game in progress: Artillery Duel

sirmorris wrote:You never fail to Amaze me Dr. Beep :D
Thanks, game 30 will be a ZX81 version of this game....

https://vector-runner-remix.tresensa.com/
by dr beep
Wed Nov 30, 2016 2:17 pm
Forum: Development
Topic: New 1K hires game in progress: Artillery Duel
Replies: 36
Views: 9507

Re: New 1K hires game in progress: Artillery Duel

I had an idea last nicht and I was able to sav eed numerous bytes. I added windeffect and was able to reduce stacksize. So not only better gameplay but better screen as wel.
by dr beep
Tue Nov 29, 2016 9:29 pm
Forum: GAMES
Topic: New ZX81 Games
Replies: 363
Views: 682741

New ZX81 Games

Name of Software: Artillery Duel Author: Johan "Dr Beep" Koelman Release Date: 29/11/2016 Requirements (eg. 1K, 16K, AY Card, Hi-Res Scheme): 1K, WRX hires Description: Shoot the cannon of your opponent by entering the correct angle and speed. EDIT: now with extra windeffect and shortened stack for ...
by dr beep
Tue Nov 29, 2016 8:53 pm
Forum: Development
Topic: New 1K hires game in progress: Artillery Duel
Replies: 36
Views: 9507

Re: New 1K hires game in progress: Artillery Duel

Well, there was indeed a flaw in the angle/speed routine. Redundant code saved a byte, but repair costed 2 bytes. Luckily I could save the byte on the lowres screen. No bytes left for code. The game is so tight coded that the stack might appear on the screen. This is repaired on the next screenupdat...
by dr beep
Tue Nov 29, 2016 7:43 pm
Forum: Development
Topic: New 1K hires game in progress: Artillery Duel
Replies: 36
Views: 9507

Re: New 1K hires game in progress: Artillery Duel

Collision now perfect.
Added check if rock is hit.
So tight coded that a bit of the stack can be shown on screen.

Only check on angle to be done. Code might have a small bug there.
Don't it will cost bytes.
by dr beep
Tue Nov 29, 2016 6:28 pm
Forum: Development
Topic: New 1K hires game in progress: Artillery Duel
Replies: 36
Views: 9507

Re: New 1K hires game in progress: Artillery Duel

Collission working, but location must change for better play.

3 bytes needed, 1 available.