!StarInfo/Files/SpriteDemo/SprDem8

Home » Archimedes archive » Acorn User » AU 1993-04.adf » !StarInfo/Files/SpriteDemo/SprDem8

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk:	Home » Archimedes archive » Acorn User » AU 1993-04.adf
Filename:	!StarInfo/Files/SpriteDemo/SprDem8
Read OK:	✔
File size:	076A bytes
Load address:	FFFFFB44
Exec address:	696EB80A

File contents

   10REM     >SprDem8 (Info18)
   20REM By  DA
   30REM For 32-bit machines
   40REM (c) BAU April 1993
   50:
   60MODE 13
   70OFF
   80PROCinit_sprite_area
   90PROCcreate_mess("BBC Acorn User Sprite Demo")
  100PROCselect_mode(3)
  110PROCanimate
  120END
  130:
  140DEF PROCinit_sprite_area
  150sprite_op%=&2E
  160area_size%=30*1024
  170DIM sprites% area_size%,zoom% 16,tab% &100,cols%(3)
  180cols%()=2,4,16,256
  190!sprites%=area_size%
  200sprites%!8=16
  210SYS sprite_op%,&109,sprites%
  220zoom%!8=&100
  230zoom%!12=&100
  240ENDPROC
  250:
  260DEF PROCcreate_mess(m$)
  270n%=LEN(m$)
  280DIM sp%(n%)
  290FOR i%=0 TO n%-1
  300 c%=RND(255)
  310 COLOUR (c% AND 63) TINT (c% AND 192)
  320 PRINTTAB(0,0)MID$(m$,i%+1,1)
  330 SYS sprite_op%,&110,sprites%,STR$i%,,0,992,31,1023
  340 SYS sprite_op%,&118,sprites%,STR$i% TO ,,sp%(i%)
  350 SYS sprite_op%,&21D,sprites%,sp%(i%)
  360 FOR x%=0 TO 7
  370  FOR y%=0 TO 7
  380   SYS sprite_op%,&229,sprites%,sp%(i%),x%,y% TO ,,,,,c%,t%
  390   IF c%=0 AND t%=0 SYS sprite_op%,&22C,sprites%,sp%(i%),x%,y%,0
  400  NEXT
  410 NEXT
  420NEXT
  430ENDPROC
  440:
  450DEF PROCanimate
  460bank%=1
  470REPEAT
  480 FOR a%=0 TO 359
  490  WAIT
  500  SYS "OS_Byte",112,bank%
  510  bank%=3-bank%
  520  SYS "OS_Byte",113,bank%
  530  SYS "ColourTrans_SetGCOL",&80808000,,,128
  540  CLG
  550  PRINTTAB(0,0);cols%(cur_cols%)
  560  FOR i%=0 TO n%-1
  570   a=a%+3*i%
  580   x%=640+400*COSRAD(a*3)
  590   y%=512+400*SINRAD(a*7)
  600   zoom%!0=&100+&300*ABS(COSRAD(a))
  610   zoom%!4=&100+&300*ABS(SINRAD(a))
  620   SYS "ColourTrans_SetGCOL",0,,,128
  630   SYS sprite_op%,&232,sprites%,sp%(i%),x%-8,y%-8,,zoom%
  640   SYS sprite_op%,&234,sprites%,sp%(i%),x%,y%,8,zoom%,ctab%
  650  NEXT
  660  i%=INKEY(0)-48
  670  IF i%>=0 AND i%<4 PROCselect_mode(i%)
  680 NEXT
  690UNTIL FALSE
  700ENDPROC
  710:
  720DEF PROCselect_mode(cols%)
  730cur_cols%=cols%
  740CASE cols% OF
  750 WHEN 0:MODE 4
  760 WHEN 1:
  770  MODE 1
  780  FOR i%=0 TO 3
  790   COLOUR i%,i%*&50,i%*&50,i%*&50
  800  NEXT
  810 WHEN 2:
  820  MODE 9
  830  FOR i%=0 TO 7
  840   COLOUR i%+8,i%*&20,i%*&20,i%*&20
  850  NEXT
  860 WHEN 3:MODE 13
  870ENDCASE
  880OFF
  890IF MODE=13 THEN
  900 ctab%=-1
  910ELSE
  920 SYS "ColourTrans_SelectTable",13,0,-1,-1,tab%
  930 ctab%=tab%
  940ENDIF
  950VDU 19,0,24,&80,&80,&80
  960ENDPROC


�     >SprDem8 (Info18)
� By  DA
� For 32-bit machines
(� (c) BAU April 1993
2:
<� 13
F�
P�init_sprite_area
Z.�create_mess("BBC Acorn User Sprite Demo")
d�select_mode(3)
n�animate
x�
�:
�� �init_sprite_area
�sprite_op%=&2E
�area_size%=30*1024
�5� sprites% area_size%,zoom% 16,tab% &100,cols%(3)
�cols%()=2,4,16,256
�!sprites%=area_size%
�sprites%!8=16
�ș sprite_op%,&109,sprites%
�zoom%!8=&100
�zoom%!12=&100
��
�:
� �create_mess(m$)
n%=�(m$)

� sp%(n%)
"� i%=0 � n%-1
, c%=�(255)
6 � (c% � 63) Ȝ (c% � 192)
@ �0,0)�m$,i%+1,1)
J3 ș sprite_op%,&110,sprites%,�i%,,0,992,31,1023
T0 ș sprite_op%,&118,sprites%,�i% � ,,sp%(i%)
^( ș sprite_op%,&21D,sprites%,sp%(i%)
h � x%=0 � 7
r  � y%=0 � 7
|=   ș sprite_op%,&229,sprites%,sp%(i%),x%,y% � ,,,,,c%,t%
�@   � c%=0 � t%=0 ș sprite_op%,&22C,sprites%,sp%(i%),x%,y%,0
�  �
� �
��
��
�:
�� �animate
�bank%=1
��
� � a%=0 � 359
�  Ȗ
�  ș "OS_Byte",112,bank%
�  bank%=3-bank%
  ș "OS_Byte",113,bank%
.  ș "ColourTrans_SetGCOL",&80808000,,,128
  �
&  �0,0);cols%(cur_cols%)
0  � i%=0 � n%-1
:   a=a%+3*i%
D   x%=640+400*��(a*3)
N   y%=512+400*��(a*7)
X!   zoom%!0=&100+&300*�(��(a))
b!   zoom%!4=&100+&300*�(��(a))
l'   ș "ColourTrans_SetGCOL",0,,,128
v;   ș sprite_op%,&232,sprites%,sp%(i%),x%-8,y%-8,,zoom%
�>   ș sprite_op%,&234,sprites%,sp%(i%),x%,y%,8,zoom%,ctab%
�  �
�  i%=�(0)-48
�%  � i%>=0 � i%<4 �select_mode(i%)
� �
�� �
��
�:
�� �select_mode(cols%)
�cur_cols%=cols%
�Ȏ cols% �
� � 0:� 4
�	 � 1:
	  � 1
  � i%=0 � 3
    � i%,i%*&50,i%*&50,i%*&50
   �
*	 � 2:
4	  � 9
>  � i%=0 � 7
H"   � i%+8,i%*&20,i%*&20,i%*&20
R  �
\
 � 3:� 13
f�
p�
z� �=13 �
�
 ctab%=-1
��
�1 ș "ColourTrans_SelectTable",13,0,-1,-1,tab%
� ctab%=tab%
��
�� 19,0,24,&80,&80,&80
��
�

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00000020  20 42 79 20 20 44 41 0d  00 1e 19 f4 20 46 6f 72  | By  DA..... For|
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00000090  22 42 42 43 20 41 63 6f  72 6e 20 55 73 65 72 20  |"BBC Acorn User |
000000a0  53 70 72 69 74 65 20 44  65 6d 6f 22 29 0d 00 64  |Sprite Demo")..d|
000000b0  13 f2 73 65 6c 65 63 74  5f 6d 6f 64 65 28 33 29  |..select_mode(3)|
000000c0  0d 00 6e 0c f2 61 6e 69  6d 61 74 65 0d 00 78 05  |..n..animate..x.|
000000d0  e0 0d 00 82 05 3a 0d 00  8c 17 dd 20 f2 69 6e 69  |.....:..... .ini|
000000e0  74 5f 73 70 72 69 74 65  5f 61 72 65 61 0d 00 96  |t_sprite_area...|
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00000760  26 38 30 0d 03 c0 05 e1  0d ff                    |&80.......|
0000076a

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