[bb] BBThugha by johnpeat [ 1+ years ago ]

[BlitzBot]

Title : BBThugha
Author : johnpeat
Posted : 1+ years ago

Description : Converted from JCthugha just to 'test out' BB's raw processing speed - which is about on a par with MSIE-based Java...

Code :

Code: BlitzBasic

1. ; Converted from JCthugha
2. ; http://www.afn.org/~cthugha/ for much much more...
3. ;
4. ; Blitz Note: Disable Debug or this runs WAY too slow...
5.  
6. ;Set screen size
7. Const gwidth=400,gheight=200
8. Graphics gwidth,gheight,16,2
9.  
10. Dim snd(gwidth)
11.  
12. Dim col(256)
13. Dim colmap(gwidth,gheight)
14.  
15. ; Make a "palette"
16. For i = 0 To 63
17.         col(i)=i*4*256*256 ; Reds
18.         col(i+64)=i*4*256 ; Greens
19.         col(i+128)=i*4 ; Blues
20.         col(i+192)=i*4*256*256+i*4*256+i*4 ; Greys
21. Next
22.  
23.  
24. Repeat
25.        
26.         ; Fake a 'sound wave'
27.         snd(0) = Rand(-gheight/3,gheight/3)
28.         For i = 1 To gwidth-1
29.                 snd(i) = snd(i-1) + Rand(-10,10)
30.                 If snd(i) < -gheight Then snd(i) = snd(i) = 2*gheight
31.                 If snd(i) > gheight  Then snd(i) = snd(i) - 2*gheight
32.         Next
33.  
34.         ;Draw black outline to ensure 'flameout'
35.         Color 0,0,0
36.         Line 0,0,gwidth-1,0
37.         Line 0,gheight-1,gwidth-1,gheight-1
38.         Line 0,0,0,gheight
39.         Line gwidth-1,0,gwidth-1,gheight-1
40.  
41.         LockBuffer FrontBuffer()
42.  
43.         ; 'Flame' effect
44.         For x = 0 To gwidth-1
45.                 For y = 0 To gheight-2
46.                         p1 = colmap(x+1,y)
47.                         p2 = colmap(x,y+1)
48.                 p3 = colmap(x+1,y+1)
49.                         p4 = colmap(x,y)
50.                         If  p1 < 0 Then p1 = p1 + 256
51.                         If  p2 < 0 Then p2 = p2 + 256
52.                         If  p3 < 0 Then p3 = p3 + 256
53.                         If  p4 < 0 Then p4 = p4 + 256
54.                         s = p1 + p2 + p3 + p4;
55.                         s = s / 4;
56.                         If s > 0 Then s = s - 1
57.                         colmap(x,y)=s
58.                 WritePixelFast x,y,col(s)
59.                 Next
60.                 colmap(x,gheight/2+snd(x)/3)=255
61.                 WritePixelFast x,gheight/2+snd(x)/3,$ffffff ; White
62.         Next
63.  
64.         UnlockBuffer FrontBuffer()
65.  
66. Until KeyHit(1)
67.  
68. End

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