!AWAug91/Goodies/Snails/!SNAILS/!RUNIMAGE

Home » Archimedes archive » Archimedes World » AW-1991-08.adf » August91 » !AWAug91/Goodies/Snails/!SNAILS/!RUNIMAGE

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 » Archimedes World » AW-1991-08.adf » August91
Filename:	!AWAug91/Goodies/Snails/!SNAILS/!RUNIMAGE
Read OK:	✔
File size:	07DA bytes
Load address:	0000
Exec address:	0000

File contents

   10REM ><SNAILS$DIR>.!RUNIMAGE
   20REM Falling Snails Demo
   30REM Version 0.1 April 1991
   40REM Public domain demo
   50:
   60ON ERROR MODE12:END
   70PROCtitle
   80PROCinitial
   90REPEAT
  100FOR height% = 512 TO -384 STEP -128
  110  FOR maincount% = 0 TO 29
  120    shading% += 1
  130    red1% = (SIN(shading%/100) + 1) * 8
  140    red2% = (-SIN(shading%/190) + 1) * 8
  150    green1% = (SIN(shading%/130) + 1) * 8
  160    green2% = (-SIN(shading%/70) + 1) * 8
  170    blue1% = (SIN(shading%/170) + 1) * 8
  180    blue2% = (-SIN(shading%/110) + 1) * 8
  190    PROCcolours
  200    spname$ = STR$(maincount%)
  210    displacement% = height% - 128/30 * maincount%
  220    SYS "OS_SpriteOp",290,sp,spname$,-520,displacement%,0
  230    SYS "OS_SpriteOp",290,sp,spname$,-520,displacement% - 1024,0
  240    othercount% = 29 - maincount%
  250    spname$ = STR$(othercount%)
  260    SYS "OS_SpriteOp",290,sp,spname$,100,displacement% - 512,0
  270    SYS "OS_SpriteOp",290,sp,spname$,100,displacement% + 512,0
  280  NEXT
  290NEXT
  300UNTIL FALSE
  310END
  320:
  330DEF PROCtitle
  340  DIM sp2 1024*24
  350  !sp2 = 1024*24
  360  sp2!4=0
  370  sp2!8=16
  380  sp2!12=16
  390  SYS "OS_SpriteOp",266,sp2,"<SNAILS$DIR>.!SPRITES"
  400  MODE 12
  410  OFF
  420  ORIGIN 640,512
  430  FOR N% = 1 TO 14
  440    COLOUR N%,N%*16,0,0
  450  NEXT
  460  COLOUR 0,0,0,0
  470  COLOUR 15,240,176,176
  480  SYS "OS_SpriteOp",290,sp2,"colophon",-200,0,0
  490  SYS "OS_SpriteOp",290,sp2,"BTS",-540,-150,0
  500  COLOUR 15
  510  PRINT TAB(36,24);"PRESENTS"
  520  T% = TIME
  530  REPEAT UNTIL TIME-T% > 300
  540  MODE 9
  550  OFF
  560  ORIGIN 640,512
  570  T% = TIME
  580  REPEAT UNTIL TIME-T% > 10
  590  COLOUR 14
  600  PRINT TAB(12,10);"SNAIL INVADERS!"
  610ENDPROC
  620:
  630DEF PROCinitial
  640  DIM sp 210 * 1024
  650  !sp = 210 * 1024
  660  sp!4=0
  670  sp!8=16
  680  sp!12=16
  690  SYS "OS_SpriteOp",266,sp,"<SNAILS$DIR>.SNAILS"
  700  CLS
  710  COLOUR 0,0,0,0
  720  shading% = 0
  730ENDPROC
  740:
  750DEF PROCcolours
  760  FOR N% = 1 TO 14
  770    R% = 16 * ((red2% - red1%) * (N%-1) / 13 + red1%)
  780    G% = 16 * ((green2% - green1%) * (N%-1) / 13 + green1%)
  790    B% = 16 * ((blue2% - blue1%) * (N%-1) / 13 + blue1%)
  800    COLOUR N%,R%,G%,B%
  810  NEXT
  820  COLOUR 15,red2%*4+176,green2%*4+176,blue2%*4+176
  830REM  COLOUR 15,240,240,240
  840ENDPROC


� ><SNAILS$DIR>.!RUNIMAGE
� Falling Snails Demo
� Version 0.1 April 1991
(� Public domain demo
2:
<
� � �12:�
F
�title
P�initial
Z�
d!� height% = 512 � -384 � -128
n  � maincount% = 0 � 29
x    shading% += 1
�)    red1% = (�(shading%/100) + 1) * 8
�*    red2% = (-�(shading%/190) + 1) * 8
�+    green1% = (�(shading%/130) + 1) * 8
�+    green2% = (-�(shading%/70) + 1) * 8
�*    blue1% = (�(shading%/170) + 1) * 8
�+    blue2% = (-�(shading%/110) + 1) * 8
�    �colours
�    spname$ = �(maincount%)
�5    displacement% = height% - 128/30 * maincount%
�<    ș "OS_SpriteOp",290,sp,spname$,-520,displacement%,0
�C    ș "OS_SpriteOp",290,sp,spname$,-520,displacement% - 1024,0
�%    othercount% = 29 - maincount%
�     spname$ = �(othercount%)
A    ș "OS_SpriteOp",290,sp,spname$,100,displacement% - 512,0
A    ș "OS_SpriteOp",290,sp,spname$,100,displacement% + 512,0
  �
"�
,� �
6�
@:
J� �title
T  � sp2 1024*24
^  !sp2 = 1024*24
h
  sp2!4=0
r  sp2!8=16
|  sp2!12=16
�6  ș "OS_SpriteOp",266,sp2,"<SNAILS$DIR>.!SPRITES"
�
  � 12
�  �
�  ȑ 640,512
�  � N% = 1 � 14
�    � N%,N%*16,0,0
�  �
�  � 0,0,0,0
�  � 15,240,176,176
�2  ș "OS_SpriteOp",290,sp2,"colophon",-200,0,0
�0  ș "OS_SpriteOp",290,sp2,"BTS",-540,-150,0
�
  � 15
�  � �36,24);"PRESENTS"
  T% = �
  � � �-T% > 300
	  � 9
&  �
0  ȑ 640,512
:  T% = �
D  � � �-T% > 10
N
  � 14
X!  � �12,10);"SNAIL INVADERS!"
b�
l:
v� �initial
�  � sp 210 * 1024
�  !sp = 210 * 1024
�  sp!4=0
�
  sp!8=16
�  sp!12=16
�3  ș "OS_SpriteOp",266,sp,"<SNAILS$DIR>.SNAILS"
�  �
�  � 0,0,0,0
�  shading% = 0
��
�:
�� �colours
�  � N% = 1 � 14
9    R% = 16 * ((red2% - red1%) * (N%-1) / 13 + red1%)
?    G% = 16 * ((green2% - green1%) * (N%-1) / 13 + green1%)
<    B% = 16 * ((blue2% - blue1%) * (N%-1) / 13 + blue1%)
     � N%,R%,G%,B%
*  �
41  � 15,red2%*4+176,green2%*4+176,blue2%*4+176
>�  COLOUR 15,240,240,240
H�
�

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000000b0  34 20 88 20 2d 31 32 38  0d 00 6e 1b 20 20 e3 20  |4 . -128..n.  . |
000000c0  6d 61 69 6e 63 6f 75 6e  74 25 20 3d 20 30 20 b8  |maincount% = 0 .|
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00000110  38 0d 00 8c 2a 20 20 20  20 72 65 64 32 25 20 3d  |8...*    red2% =|
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00000190  38 0d 00 aa 2a 20 20 20  20 62 6c 75 65 31 25 20  |8...*    blue1% |
000001a0  3d 20 28 b5 28 73 68 61  64 69 6e 67 25 2f 31 37  |= (.(shading%/17|
000001b0  30 29 20 2b 20 31 29 20  2a 20 38 0d 00 b4 2b 20  |0) + 1) * 8...+ |
000001c0  20 20 20 62 6c 75 65 32  25 20 3d 20 28 2d b5 28  |   blue2% = (-.(|
000001d0  73 68 61 64 69 6e 67 25  2f 31 31 30 29 20 2b 20  |shading%/110) + |
000001e0  31 29 20 2a 20 38 0d 00  be 10 20 20 20 20 f2 63  |1) * 8....    .c|
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00000250  20 20 c8 99 20 22 4f 53  5f 53 70 72 69 74 65 4f  |  .. "OS_SpriteO|
00000260  70 22 2c 32 39 30 2c 73  70 2c 73 70 6e 61 6d 65  |p",290,sp,spname|
00000270  24 2c 2d 35 32 30 2c 64  69 73 70 6c 61 63 65 6d  |$,-520,displacem|
00000280  65 6e 74 25 2c 30 0d 00  e6 43 20 20 20 20 c8 99  |ent%,0...C    ..|
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00000490  ed 0d 01 cc 0f 20 20 fb  20 30 2c 30 2c 30 2c 30  |.....  . 0,0,0,0|
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000004f0  20 22 4f 53 5f 53 70 72  69 74 65 4f 70 22 2c 32  | "OS_SpriteOp",2|
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00000530  29 3b 22 50 52 45 53 45  4e 54 53 22 0d 02 08 0c  |);"PRESENTS"....|
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000006c0  20 3d 20 31 36 20 2a 20  28 28 72 65 64 32 25 20  | = 16 * ((red2% |
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000006e0  29 20 2f 20 31 33 20 2b  20 72 65 64 31 25 29 0d  |) / 13 + red1%).|
000006f0  03 0c 3f 20 20 20 20 47  25 20 3d 20 31 36 20 2a  |..?    G% = 16 *|
00000700  20 28 28 67 72 65 65 6e  32 25 20 2d 20 67 72 65  | ((green2% - gre|
00000710  65 6e 31 25 29 20 2a 20  28 4e 25 2d 31 29 20 2f  |en1%) * (N%-1) /|
00000720  20 31 33 20 2b 20 67 72  65 65 6e 31 25 29 0d 03  | 13 + green1%)..|
00000730  16 3c 20 20 20 20 42 25  20 3d 20 31 36 20 2a 20  |.<    B% = 16 * |
00000740  28 28 62 6c 75 65 32 25  20 2d 20 62 6c 75 65 31  |((blue2% - blue1|
00000750  25 29 20 2a 20 28 4e 25  2d 31 29 20 2f 20 31 33  |%) * (N%-1) / 13|
00000760  20 2b 20 62 6c 75 65 31  25 29 0d 03 20 15 20 20  | + blue1%).. .  |
00000770  20 20 fb 20 4e 25 2c 52  25 2c 47 25 2c 42 25 0d  |  . N%,R%,G%,B%.|
00000780  03 2a 07 20 20 ed 0d 03  34 31 20 20 fb 20 31 35  |.*.  ...41  . 15|
00000790  2c 72 65 64 32 25 2a 34  2b 31 37 36 2c 67 72 65  |,red2%*4+176,gre|
000007a0  65 6e 32 25 2a 34 2b 31  37 36 2c 62 6c 75 65 32  |en2%*4+176,blue2|
000007b0  25 2a 34 2b 31 37 36 0d  03 3e 1c f4 20 20 43 4f  |%*4+176..>..  CO|
000007c0  4c 4f 55 52 20 31 35 2c  32 34 30 2c 32 34 30 2c  |LOUR 15,240,240,|
000007d0  32 34 30 0d 03 48 05 e1  0d ff                    |240..H....|
000007da

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