ZX Spectrum BASIC Jam

hello. Can i LOAD "" CODE with graphics into a memory or direct to screen? Or I need to store it in DATA and manually PUSH it into memory to print some graphics with redefined font?

Is any tricks allowed as the tricks with system variables in SINCLAIR BASIC?

GazzapperHostSubmitted6 years ago(+1)

See reply thks :)

GazzapperHostSubmitted6 years ago (1 edit)

Diver4d, Yes! You can use tricks with system variables and loading code is fine for purpose of convenience.

As long as no USR ###### statements are used to run machine code routines. :)

ShizuCarry6 years ago

2 simple question:
-By "arcade game" do you mean die and retry scoring game or anything who standed on arcade ? (shut them all, gunners, soccers game, etc)
- I've tried to make some ascii game but i had the feel the screen is to small, can we change it or must we use sprite?

Btw: really cool game jam theme, i've never eared about classic and 30 year old stuff so i'm discovering so many things in a so little time! :)
Thanks you! o/

GazzapperHostSubmitted6 years ago

Thanks Shizu - Yes, Arcade is generate term for action game moving about etc. can be shooting or moving with score goal or end goal in mind.

If you look into it - you find an easy way to create Sprites (UDGs in BASIC) using BIN numbers.

BIN 00011000 (8 pixels wide with only two middle pixels turned on)

A standard speccy sprite is 8x8 pixels in size.

ShizuCarry6 years ago

Hum thanks for your anwser.
So now i'm trying to make a sprite with a code i found on youtube but i always got this error, is it normal ?
The udg editor can read it but i can play the game :/
And when i try to use the udg it doesn't save my draws the next time i load the file >.<
http://prntscr.com/fe5vo0

sigurdurf6 years ago(+1)

Hi, change the for to "FOR C=0 TO 7" . I think you counted one too many there.

ShizuCarry6 years ago

Mmmh, it say the same, even for 2, it just take a bit more time to say it ><

sigurdurf6 years ago (1 edit)

I can only see part of your code. Do you have a larger for loop, not seen, around the whole thing? It looks like you have a game loop and you recreate the udg every time? You only need to create the udg once and then you can start your game loop. Move the code in lines 62 to 75 to the beginning and make sure it is only run once.

sigurdurf6 years ago

and if you move the code to the beginning, skip the RETURN line, I forgot that one.

sigurdurf6 years ago

Here is a code that could give you hints. Use W,A,S,D to move the character. This one uses the return, see how the GOSUB calls line 1000 at the beginning, the RETURN returns to the line after the GOSUB. So you can break up your code in tidier modules using that method.

https://pastebin.com/pth8acLU

sigurdurf6 years ago (1 edit)

If you use Facebook then Simon Ferre is now running tutorial lessons for beginners in the group "BASIC on the ZX Spectrum". If you are not a member of the group there should be a button there somewhere to apply.

https://www.facebook.com/group...

ShizuCarry6 years ago (1 edit)

Nice I've asked to join =)
Do you think there is a code to make multiple inkey ?

GazzapperHostSubmitted6 years ago

Also for easy printing on screen you can use PRINT CHR$ 144 :)

ShizuCarry6 years ago

http://prntscr.com/fecv9f
This way ? :)
What does it do ?

sigurdurf6 years ago(+2)

No, CHR$ 144 is the first udg character. Next udg character is CHR$ 145 ("b") and so on until the last udg "u" which is CHR$ 164. You have 21 udg characters which you can change as you want (a,b,c,d,e, f, g, ... u). In the code you posted earlier you changed udg character "n" which is CHR$ 157.

GazzapperHostSubmitted6 years ago

Good spot - I assumed everyone started from USR "a" lol! :)