Hi,
some devilish particles for Christmas.
screen(640,480,0,"Particles")
backcolor(0,0,0)
setframetimer(60)
mousehide()
function distance(x1,y1,x2,y2)
local dx, dy
dx=x1-x2
dy=y1-y2
return math.sqrt(dx*dx+dy*dy)
end
function xMove(x3,w,s)
return x3 + cosin[w]*s
end
function yMove(y3,w,s)
return y3 + sinus[w]*s
end
function rand(minZahl,maxZahl)
maxZahl=(maxZahl-minZahl)
return int(rnd()*maxZahl+minZahl)
end
anzahl,i,aSpeed,xscreen,yscreen = 1000,0,0,640,480
xmitte,ymitte,devil,p,col = 0,0,0,0,0
xmitte = xscreen/2
ymitte = yscreen/2
x={}; y={}; winkel={}; speed={}; sinus={}; cosin={}
for i=1,anzahl do
x[i] = xmitte
y[i] = ymitte
speed[i] = rand(1,3)
winkel[i]= rand(1,360)
end
for i=1,360 do
sinus[i] = sin(math.rad(i))
cosin[i] = cos(math.rad(i))
end
devil=loadimage("devil.png")
repeat
p=getkey()
alphachannel(255)
cls()
putimage(mousex() -32,mousey() -48,devil)
for i=1,anzahl do
aSpeed = distance(xmitte,ymitte,x[i],y[i]) /200 * speed[i]+1
x[i] = xMove(x[i], winkel[i], aSpeed)
y[i] = yMove(y[i], winkel[i], aSpeed)
if x[i] < 0 or x[i] > xscreen or y[i] < 0 or y[i] > yscreen then
x[i] = xmitte
y[i] = ymitte
winkel[i]= rand(1,360)
speed[i] = rand(1,3)
end
col=speed[i]*100-55
alphachannel(100)
color(col,col,col)
fillellipse(x[i],y[i],4,4)
end
xmitte = mousex()
ymitte = mousey()
redraw()
until p==27
closewindow()
