12 replies to this topic

[casiokingdom]

You know how some snake games (eg. Xworm) are graph based and use the PxlTest command.

i'm not completely sure how to use it.

i want to draw random dots around the screen and then when my snake hits any dot, it goes gameover.

can somebody please help.

[huhn_m]

Wll it is not very fast to use graphics mode but i'll explain it though:

PxlTest:

PxlTest X,Y

;This tests the pixel at X ,Y (Not sure maybe upside down: Y,X)

Now you can't use the result directly so you have to do it the folowing way:

PixelTest A,B ;A/B is the head of the snake
Ans=1=>Goto s ;Pixel is set! Die!!!


It's silly you can't use it in conditions but Ans contains the value pixeltest returns. Good Luck!

[genesis]

Good explanation. It's sort of the Casio version of 'hitcollisiontest' (for those people who know programming or flash). Also, PxlChg inverts the pixels but doesn't invert colour.

Who here makes color games, I can't be bothered, it's not like we need the colour, black and white games are already slow.

[CrimsonCasio]

its not the color commands that make a game slow, its the mere fact that calc can do color.

[Endi]

maybe it's better to do this snake game in text mode...
I'm not sure if Locate function works slower than SetPxl. Possibly yes, but in text mode the snake is clearer and easier to lead to target.
Anyway I made snake in text, but it worked rather slow after eating 12 targets. It is not a problem to enlarge snake, but to check impacts.

[CrimsonCasio]

if you do a snake game in text mode you have to use a matrix, and it will be slower. if you want a good example of a snake game in graph mode look at the Nibbles 123 game on my site, its my first, second, and third attempt at a snake game (its three games).

[Endi]

I didn't use matrix. I used two lists and a variable to point to an actual 'head' cell. I used scrolling through these lists.

[CrimsonCasio]

I meant for collisons with the obsicles on the screen, not the snake. anyway, its much better to do it in graph mode, i strongly urge you to take a look at the Nibbles 123 on my site, you will see what i mean.

[Endi]

I have some problems with my normal COM port (and my mouse port never worked with Casio cable). I have to test it with an emulator, but maybe not today. Anyway I've just downloaded it.

[CrimsonCasio]

ok, you can at least look at the code.

[ross8653]

have you thought of using text?
writing the deg sign (which actually turns out to be a 3x3 hollow square) and turning the middle pixel on, is faster than drawing 3 flines to fill the same space (on the AFX2.0)

also for clearing you could write a text space (" ") somewhere to the end. This would end up being a lot faster than clearing 9 pxls

if you look at my tetris game's loading screen i use this method but it turned out to be way too much of a problem for ingame graphics

[huhn_m]

I made a snake game in graph mode that ran pretty fast!
It also includes a level editor to make own levels.

It's quite easy!

Here is the link:

Snake GAME

In level editor:

EXE = SET WALL
- = RESET WALL
EXP = SAVE MAP

*EDIT

If you get an error click right on the link and choose "save target as"

or click in the adresse field and press enter to reload the file. It will work then.

[casiokingdom]

thanks for all the help guys