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Copper Bars

Posted: Mon Aug 04, 2014 8:15 pm
by peter
Hello,

It's very slow. :evil:

Code: Select all

SCREEN 640,480

Global yr
yg=40
yb=80

While keydown(27)=0
For i=0 to 240
    Color i+15,0,0 
    Line 0,i,640,i
    Color 255-i,0,0 
    Line 0,i+240,640,i+240
Next i

Color 255,255,255
Text 240,200,"AMIGA COPPER BAR ?"

RedCopper(yr)
GreenCopper(yg)
BlueCopper(yb)

yr = yr+1
yg = yg-1
yb = yb+1
If yr >=480 Then yr=-64
If yg <=-64 Then yg=480
If yb >=480 Then yb=-64

DrawScreen OFF
Wend
End 

Function RedCopper(y)
For i=64 to 255 Step 10 
    Color i,0,0
    Line 0,y,639,y
    y = y+1
Next i    
For i=255 to 64 Step -10
    Color i,0,0
    Line 0,y,639,y
    y = y+1
Next i
End Function

Function GreenCopper(y)
For i=64 to 255 Step 10 
    Color 0,i,0
    Line 0,y,639,y
    y = y+1
Next i    
For i=255 to 64 Step -10
    Color 0,i,0
    Line 0,y,639,y
    y = y+1
Next i 
End Function

Function BlueCopper(y)
For i=64 to 255 Step 10 
    Color 0,i,i
    Line 0,y,639,y
    y = y+1
Next i   
For i=255 to 64 step -10
    Color 0,i,i
    Line 0,y,639,y
    y = y+1
Next i
End Function

Re: Copper Bars

Posted: Wed Aug 06, 2014 7:21 pm
by CCE
It isn't too slow here. In any case, you could make it faster by precalculating the bars as images and then just blitting them in correct places.