SMFX - So Whatt? QL Sprite Record

[spkr]

hi there guys,

Ive set the new bar at 35 sprites in a single vbl while running a 1px scroller of 5px high and playing music! The previous record was at 17 sprites...
You can find the link to the binary https://www.pouet.net/prod.php?which=93405, or watch the Youtube video (captured from real hardware, but not at 50hz unfortunately), here: https://youtu.be/bS_Csjm01z0.

Try to beat diz!
Regards,
Wietze

[Derek_Stewart]

Hi,

Nice YouTube video.

I tried the SOHATT.IMG file on the Q68, which runs very nicely in 512x256 4 Colour mode.

[spkr]

Hi,

that is unexpected; I would expect it to switch to 256x256; I am doing

Code: Select all

	or.b	#%1000,$18063		; set the 256x256 screen mode

The intended use is for Stock QL anyhow, but I can not explain why you are in mode 4.

Regards,
wietze

[ppe]

Holy cow, that's an amazing achievement on stock QL Waiting for ASM gurus like Norman or JanB to step up to the plate and try to beat that one

Thank you for bringing demoscene to the QL world, you rock!

[stevepoole]

Hi Folks,

The quoted YouTube video 3D animation of space vessels is very good.

It would be interesting to try to do it in Basic...

Steve.

[NormanDunbar]

...Waiting for ASM gurus like Norman or JanB to step up to the plate and try to beat that one

I don't "do" graphics!

But it was very impressive!

Cheers,
Norm.

[dex]

Is the drawing somehow synchronised with the frame?
If yes, how?

[ones' complement]

Any chance of a Sprite Toolkit?

[spkr]

Is the drawing somehow synchronised with the frame?
If yes, how?

The effect is double buffered, so a screen is completed before its displayed. The buffer switch is executed in the vertical blank vector, then the mainloop runs seperately from the vblank code to draw to the backbuffer. The mainloop in this case waits for the vblank to occur and have finished before it starts drawing to the buffer.

[spkr]

Any chance of a Sprite Toolkit?

I dont know what you mean here; what do you mean with Sprite Toolkit?

For some other stuff I cobbled together a bmp to ql graphics format conversion (bmp in, assembly statements out).
For this sprite record stuff, the sprite graphic is analyzed and some optimal code generation has been applied. (bmp in, sprite masks and code out).

Kind regards,
Wietze