Real Sprites (old but gold)
Joshy
Code: Select all
#include "fbgfx.bi"
'
' NewImage = ImageScale(SourceImage,Scale)
'
Function ImageScale(s As fb.Image Ptr, Scale as single=1.0) As fb.Image Ptr
static As fb.Image Ptr t=0
If s =0 Then Return 0
If s->width <1 Then Return 0
If s->height<1 Then Return 0
scale=abs(scale)
dim as integer w = s->width *Scale
dim as integer h = s->height*Scale
If w<4 Then w=4
If h<4 Then h=4
if t then ImageDestroy(t) : t=0
t=ImageCreate(w,h)
Dim As Integer xs=(s->width /t->Width ) * (1024*64)
Dim As Integer ys=(s->height/t->height) * (1024*64)
Dim As Integer x,y,sy
Select Case As Const s->bpp
Case 4
Dim As Ulong Ptr ps=cptr(Ulong Ptr,s)+8
Dim As Uinteger sp=(s->pitch Shr 2)
Dim As Ulong Ptr pt=cptr(Ulong Ptr,t)+8
Dim As Uinteger tp=(t->pitch Shr 2)-t->width
For ty As Integer = 0 To t->height-1
Dim As Ulong Ptr src=ps+(sy Shr 16)*sp
For tx As Integer = 0 To t->width-1
*pt=src[x Shr 16]:pt+=1:x+=xs
Next
pt+=tp:sy+=ys:x=0
Next
Case 2
Dim As Ushort Ptr ps=cptr(Ushort Ptr,s)+16
Dim As Uinteger sp=(s->pitch Shr 1)
Dim As Ushort Ptr pt=cptr(Ushort Ptr,t)+16
Dim As Uinteger tp=(t->pitch Shr 1)-t->width
For ty As Integer = 0 To t->height-1
Dim As Ushort Ptr src=ps+(sy Shr 16)*sp
For tx As Integer = 0 To t->width-1
*pt=src[x Shr 16]:pt+=1:x+=xs
Next
pt+=tp:sy+=ys:x=0
Next
Case 1
Dim As Ubyte Ptr ps=cptr(Ubyte Ptr,s)+32
Dim As Uinteger sp=s->pitch
Dim As Ubyte Ptr pt=cptr(Ubyte Ptr,t)+32
Dim As Uinteger tp=t->pitch-t->width
For ty As Integer = 0 To t->height-1
Dim As Ubyte Ptr src=ps+(sy Shr 16)*sp
For tx As Integer = 0 To t->width-1
*pt=src[x Shr 16]:pt+=1:x+=xs
Next
pt+=tp:sy+=ys:x=0
Next
End Select
Return t
End Function
#define FULLSCREEN 0
#define SCR_W 1024
#define SCR_H 768
type BALL2D
declare constructor (radius as integer=32)
declare sub Draw
as single size,x,y,z
as fb.Image ptr Img
end type
constructor BALL2D (radius as integer=32)
if radius<2 then radius=2
size = radius*2
dim as ulong col = RGB(rnd*256,rnd*256,rnd*256)
dim as integer r=radius
dim as single be = col and &HFF,blue =be/4:col shr=8
dim as single ge = col and &HFF,green=ge/4:col shr=8
dim as single re = col and &HFF,red =re/4
dim as single rs = red/r*3,gs=green/r*3,bs=blue/r*3
img=ImageCreate(size,size)
while r
r-=1:
Circle img,(radius,radius),r,rgb(red,green,blue),,,,F
red+=rs:green+=gs:blue+=bs
wend
end constructor
sub BALL2D.Draw
' behind the observer ?
if z<1 then return
dim as single ScreenX = x*256 /z
dim as single ScreenSize =(x+Size)*256 /z
dim as single ScreenY = y*256 /z
ScreenSize-=ScreenX
ScreenX=SCR_W/2 + ScreenX
ScreenY=SCR_H/2 + ScreenY
' scale factor
dim as single Scale = ScreenSize/Size
' ScreenRadius
dim as single ScreenRadius = ScreenSize*0.5
ScreenX-=ScreenRadius
ScreenY-=ScreenRadius
' up or down scale
put (ScreenX,ScreenY),ImageScale(img,Scale),TRANS
end sub
type BALL_CHAIN
declare constructor(n as integer=100)
declare sub Update(w as single)
declare sub Draw
as single wstep
as integer nBalls,nSorted
as BALL2D ptr pBalls
as integer ptr pSorted
end type
constructor BALL_CHAIN(n as integer)
this.nBalls = n
pBalls = new BALL2D[nBalls]
pSorted = new INTEGER[nBalls]
wstep = 1.57/nBalls
end constructor
sub BALL_CHAIN.Update(w as single)
nSorted=0
for i as integer=0 to nBalls-1
pBalls[i].z = 828+sin(w)*700
if pBalls[i].z>1 then
pBalls[i].x = cos(w*4)*500
pBalls[i].y = sin(w*8)*200
pSorted[nSorted]=i
nSorted+=1
end if
w+=wStep
next
if nSorted>1 then
dim as integer flag=1
while flag
flag=0
for i as integer=0 to nSorted-2
if pBalls[pSorted[i]].z < pBalls[pSorted[i+1]].z then
swap pSorted[i],pSorted[i+1]
flag = 1
exit for
end if
next
wend
end if
end sub
sub BALL_CHAIN.Draw
if nSorted<1 then return
for i as integer=0 to nSorted-1
pBalls[pSorted[i]].Draw
next
end sub
Screenres SCR_W,SCR_H,32,2,IIF(FULLSCREEN,1,0)
screenset 1,0
dim as BALL_CHAIN Ballchain
dim as integer frame,fps
dim as single w=-1.57
dim as double tNow,tStart=timer()
while inkey=""
cls
BallChain.Draw
flip
BallChain.Update(w)
w=w+0.005
frame+=1
if frame mod 60=0 then
tNow=timer():fps=60/(tNow-tStart):tStart=tNow
windowtitle "fps: " & fps
end if
sleep 1,1
wend
