struggle on using/implementing sprite libraries

[nitrofurano]

since a long time i was thinking how simple or possible would be using sprite engines/libraries on zxbasic-compiler (just like those used on z88dk and so on)

so i started to try this (very glitchy and inefficient, as the code shows...   )

(wsad or cursors for moving)

Code:

ink 1 border 1:ink 5:bright 1: paper 1: cls sub putudgsprite(txp1 as uinteger,typ1 as uinteger,tad1 as uinteger)   poke uinteger $5C7B,tad1+(7-(typ1 mod 8))+(txp1 mod 8)*32   print at int(typ1/8),int(txp1/8);"\A\C"   print at 1+int(typ1/8),int(txp1/8);"\B\D"   end sub yo=0:xo=0 putudgsprite(xo,yo,@udg01) x1=128:y1=128 do   cn1=((255-(in 64510)) band 2)/2 bor ((255-(in 65022)) band 2) bor ((255-(in 65022)) band 1)*4 bor ((255-(in 65022)) band 4)*2 :'- wsad   cn2=((255-(in 61438)) band 8)/8 bor ((255-(in 61438)) band 16)/8 bor ((255-(in 63486)) band 16)/4 bor ((255-(in 61438)) band 4)*2 :'-7658   cn0=cn1 bor cn2   x1=x1-((cn0 band 4)/4)   x1=x1+((cn0 band 8)/8)   y1=y1-((cn0 band 1)/1)   y1=y1+((cn0 band 2)/2)   over 1    putudgsprite(xo,yo,@udg01)   xo=x1:yo=y1   putudgsprite(x1,y1,@udg01)   pause 1   loop do:loop udg01: asm defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %11111111 defb %11111111 defb %11111111 defb %11111111 defb %11111111 defb %11111111 defb %11111111 defb %11111111 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %01111111 defb %01111111 defb %01111111 defb %01111111 defb %01111111 defb %01111111 defb %01111111 defb %01111111 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %10000000 defb %10000000 defb %10000000 defb %10000000 defb %10000000 defb %10000000 defb %10000000 defb %10000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00111111 defb %00111111 defb %00111111 defb %00111111 defb %00111111 defb %00111111 defb %00111111 defb %00111111 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %11000000 defb %11000000 defb %11000000 defb %11000000 defb %11000000 defb %11000000 defb %11000000 defb %11000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00011111 defb %00011111 defb %00011111 defb %00011111 defb %00011111 defb %00011111 defb %00011111 defb %00011111 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %11100000 defb %11100000 defb %11100000 defb %11100000 defb %11100000 defb %11100000 defb %11100000 defb %11100000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00001111 defb %00001111 defb %00001111 defb %00001111 defb %00001111 defb %00001111 defb %00001111 defb %00001111 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %11110000 defb %11110000 defb %11110000 defb %11110000 defb %11110000 defb %11110000 defb %11110000 defb %11110000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000111 defb %00000111 defb %00000111 defb %00000111 defb %00000111 defb %00000111 defb %00000111 defb %00000111 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %11111000 defb %11111000 defb %11111000 defb %11111000 defb %11111000 defb %11111000 defb %11111000 defb %11111000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000011 defb %00000011 defb %00000011 defb %00000011 defb %00000011 defb %00000011 defb %00000011 defb %00000011 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %11111100 defb %11111100 defb %11111100 defb %11111100 defb %11111100 defb %11111100 defb %11111100 defb %11111100 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000001 defb %00000001 defb %00000001 defb %00000001 defb %00000001 defb %00000001 defb %00000001 defb %00000001 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %11111110 defb %11111110 defb %11111110 defb %11111110 defb %11111110 defb %11111110 defb %11111110 defb %11111110 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 defb %00000000 end asm

so, any idea of using "true" sprites instead of that attempt above?