forked from KolibriOS/kolibrios
281 lines
6.9 KiB
NASM
281 lines
6.9 KiB
NASM
Comment *---------------------------+
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| Plasma Effect |
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+-----------------------------------*
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.686
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.Model Flat, StdCall
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Option CaseMap: None
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RepArg Macro Arg
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Local NewStr
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Quot SubStr <Arg>, 1, 1
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IfIdn Quot, <">
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.Data
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NewStr db Arg,0
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.Code
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ExitM <ADDR NewStr>
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Else
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ExitM <Arg>
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EndIf
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EndM
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@ Macro Function:Req, Args:VarArg
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Arg equ <Invoke Function>
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For Var, <Args>
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Arg CatStr Arg, <, RepArg(Var)>
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EndM
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Arg
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ExitM <eax>
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EndM
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Public @Main
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; Event Constants
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REDRAW_EVENT = 1
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KEY_EVENT = 2
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; Event Mask Constants
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EM_REDRAW = 1
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EM_KEY = 2
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; Window styles
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WS_FILL_TRANSPARENT = 40000000H
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TSize Struct
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SizeY Word ?
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SizeX Word ?
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TSize EndS
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TRGBQuad Struct
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Blue Byte ?
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Green Byte ?
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Red Byte ?
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reserved Byte ?
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TRGBQuad EndS
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SetEventMask Proto EventMask:Dword
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CheckEvent Proto
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BeginDraw Proto
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EndDraw Proto
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GetScreenSize Proto
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DrawWindow Proto Left:SDword, Top:SDword, Right:SDword, Bottom:SDword, Caption:Ptr, BackColor:Dword, Style:Dword, CapStyle:Dword
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DrawImageEx Proto Image:Ptr, X:SDword, Y:SDword, XSize:Dword, YSize:Dword, BPP:Dword, Palette:Ptr, Padding:Dword
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HeapCreate Proto
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HeapAllocate Proto Bytes:Dword
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GetTickCount Proto
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Sleep Proto Time:Dword
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ThreadTerminate Proto
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.Const
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Float_50 Real4 50.0 ; to keep the FrameRate
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Float_40 Real4 40.0 ; around 40-50 FPS
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; The table below can be calculated approximately as: SinTab[i] = Sin(2 * PI * i / 255) * 128 + 128
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SinTab Label Byte
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Byte 128, 131, 134, 137, 141, 144, 147, 150, 153, 156, 159, 162, 165, 168, 171, 174
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Byte 177, 180, 183, 186, 189, 191, 194, 197, 199, 202, 205, 207, 209, 212, 214, 217
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Byte 219, 221, 223, 225, 227, 229, 231, 233, 235, 236, 238, 240, 241, 243, 244, 245
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Byte 246, 248, 249, 250, 251, 252, 252, 253, 254, 254, 255, 255, 255, 255, 255, 255
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Byte 255, 255, 255, 255, 255, 255, 254, 254, 253, 253, 252, 251, 250, 249, 248, 247
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Byte 246, 245, 243, 242, 240, 239, 237, 236, 234, 232, 230, 228, 226, 224, 222, 220
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Byte 218, 215, 213, 211, 208, 206, 203, 201, 198, 195, 193, 190, 187, 184, 181, 179
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Byte 176, 173, 170, 167, 164, 161, 158, 155, 152, 148, 145, 142, 139, 136, 133, 130
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Byte 126, 123, 120, 117, 114, 111, 108, 104, 101, 98, 95, 92, 89, 86, 83, 80
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Byte 77, 75, 72, 69, 66, 63, 61, 58, 55, 53, 50, 48, 45, 43, 41, 38
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Byte 36, 34, 32, 30, 28, 26, 24, 22, 20, 19, 17, 16, 14, 13, 11, 10
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Byte 9, 8, 7, 6, 5, 4, 3, 3, 2, 2, 1, 1, 0, 0, 0, 0
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Byte 0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 4, 5, 6, 7, 8, 10
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Byte 11, 12, 13, 15, 16, 18, 20, 21, 23, 25, 27, 29, 31, 33, 35, 37
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Byte 39, 42, 44, 47, 49, 51, 54, 57, 59, 62, 65, 67, 70, 73, 76, 79
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Byte 82, 85, 88, 91, 94, 97, 100, 103, 106, 109, 112, 115, 119, 122, 125, 128
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.Data
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i1 Dword 50
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j1 Dword 90
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Freq Dword 100 ; // GetTickCount return count of 1/100s of second
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Instant Real4 0.0
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SleepTime Dword 0
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.Data?
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Screen TSize <>
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i2 Dword ?
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j2 Dword ?
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Palette TRGBQuad 256 Dup (<>)
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Image Dword ?
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ImageWidth Dword ?
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ImageHeight Dword ?
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FrameStart Dword ?
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.Code
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CreatePalette Proc Uses ebx
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Local i:Dword
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Local Red:Dword, Green:Dword, Blue:Dword
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mov i, 0
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.Repeat
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mov eax, i
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.If eax <= 63
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; do nothing
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.ElseIf eax <= 127
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neg eax
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add eax, 127
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.ElseIf eax <= 189
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sub eax, 128
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.ElseIf eax <= 255
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neg eax
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add eax, 255
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.EndIf
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mov Red, eax
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mov Green, eax
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mov Blue, eax
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.If i <= 127
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shl Green, 1
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shl Blue, 2
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.ElseIf i <= 255
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shl Red, 2
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shl Blue, 1
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.EndIf
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mov eax, Red ;
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cmp eax, 255 ;
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setna bl ; IF Red > 255 THEN bl = 255
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dec bl ; ELSE bl = Red
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or bl, al ;
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mov eax, Green ;
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cmp eax, 255 ;
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setna cl ; IF Green > 255 THEN cl = 255
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dec cl ; ELSE cl = Green
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or cl, al ;
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mov eax, Blue ;
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cmp eax, 255 ;
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setna dl ; IF Blue > 255 THEN dl = 255
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dec dl ; ELSE dl = Blue
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or dl, al ;
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mov eax, i
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mov Palette.Red[eax * SizeOf(Type(Palette))], bl
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mov Palette.Green[eax * SizeOf(Type(Palette))], cl
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mov Palette.Blue[eax * SizeOf(Type(Palette))], dl
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inc i
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.Until i > 255
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ret
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CreatePalette EndP
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;*******************************************************************************
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Render Proc
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Local X:Dword, Y:Dword
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Local Row:Ptr
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dec i1
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add j1, 2
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mov Y, 0
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Align 4
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.Repeat
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mov eax, Y
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add eax, i1
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and eax, 255
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movzx eax, SinTab[eax]
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mov i2, eax
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mov eax, j1
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and eax, 255
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movzx eax, SinTab[eax]
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mov j2, eax
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mov eax, Y
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mul ImageWidth
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add eax, Image
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mov Row, eax
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mov X, 0
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Align 4
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.Repeat
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mov eax, X
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add eax, i2
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and eax, 255
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movzx ecx, SinTab[eax]
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mov eax, Y
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add eax, j2
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and eax, 255
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movzx eax, SinTab[eax]
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add ecx, eax
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mov eax, Row
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add eax, X
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mov [eax], cl
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inc X
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mov eax, ImageWidth
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.Until eax == X
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inc Y
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mov eax, ImageHeight
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.Until eax == Y
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ret
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Render EndP
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;*******************************************************************************
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QueryPerf Proc
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Local Diff:Dword
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Invoke GetTickCount
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sub eax, FrameStart
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mov Diff, eax
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fild Diff
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fild Freq
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fdivrp
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fstp Instant
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mov FrameStart, @(GetTickCount)
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ret
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QueryPerf EndP
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;*******************************************************************************
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Waiting Proc
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; Keep the FrameRate around 40-50 FPS
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fld Float_50
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fld Instant
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fcomip st(0), st(1)
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fstp st(0)
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.If ABOVE?
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inc SleepTime
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.Else
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fld Float_40
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fld Instant
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fcomip st(0), st(1)
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fstp st(0)
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.If BELOW? && (SleepTime != 0)
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dec SleepTime
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.EndIf
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.EndIf
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Invoke Sleep, SleepTime
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ret
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Waiting EndP
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;*******************************************************************************
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@Main:
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Invoke HeapCreate
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mov Screen, @(GetScreenSize)
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Invoke CreatePalette
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movzx eax, Screen.SizeX
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movzx ecx, Screen.SizeY
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mov ImageWidth, eax
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mov ImageHeight, ecx
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mul ecx
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mov Image, @(HeapAllocate, eax)
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mov FrameStart, @(GetTickCount)
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Invoke SetEventMask, EM_REDRAW + EM_KEY
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.Repeat
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Invoke CheckEvent
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.If eax == REDRAW_EVENT
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Invoke BeginDraw
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Invoke DrawWindow, 0, 0, ImageWidth, ImageHeight, 0, 0, WS_FILL_TRANSPARENT, 0
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Invoke EndDraw
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.ElseIf eax == KEY_EVENT
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Invoke ThreadTerminate
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.Else
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Invoke Render
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Invoke QueryPerf
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Invoke DrawImageEx, Image, 0, 0, ImageWidth, ImageHeight, 8, Offset Palette, 0
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Invoke Waiting
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.EndIf
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.Until 0
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END |