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' It's all a bit rolly
'
Global MASSSIZE:Int=4
Global MASSRAD:Int=MASSSIZE/2
Type TMass
Field x:Float
Field y:Float
Field v:TVector
Field r:Int
Field g:Int
Field b:Int
Field mass:Float
Field friend:Int
Field inverse:Int
Method New()
v=TVector.Create()
x=Rnd(0,GraphicsWidth())
y=Rnd(0,GraphicsWidth())
r=255
g=255
b=255
mass=25
friend=True
inverse=False
End Method
Method Attract(o:TMass)
If o=Self
Return
EndIf
Local d:TVector=TVector.Create(o.x-x,o.y-y)
Local l:Float=d.Length()
If l>0.1
l:*l
d.Normalise()
d.Scale((1/l)*o.mass)
If o.inverse
d.Minus()
EndIf
v.Add(d)
If d.Length()>MASSSIZE
d.SetLength(MASSSIZE)
EndIf
EndIf
End Method
Method MoveAndDraw()
x:+v.x
y:+v.y
SetColor(r,g,b)
DrawOval(x-MASSRAD,y-MASSRAD,MASSSIZE,MASSSIZE)
End Method
End Type
Type TPoint
Field x:Float
Field y:Float
Field v:TVector
Field r:Int
Field g:Int
Field b:Int
Field dead:Int
Field lost:Int
Method New()
v=TVector.Create()
x=Rnd(0,GraphicsWidth())
y=Rnd(0,GraphicsWidth())
r=Rand(100,200)
g=Rand(100,200)
b=Rand(100,200)
dead=False
lost=False
End Method
Method Attract:Int(o:TMass)
If dead Or lost
Return
EndIf
Local d:TVector=TVector.Create(o.x-x,o.y-y)
Local l:Float=d.Length()
If l<MASSRAD
If o.friend
dead=True
Else
lost=True
EndIf
Else
l:*l
d.Normalise()
d.Scale((1/l)*o.mass)
If o.inverse
d.Minus()
EndIf
v.Add(d)
If d.Length()>MASSSIZE
d.SetLength(MASSSIZE)
EndIf
EndIf
Return dead
End Method
Method MoveAndDraw()
If (Not dead) And (Not lost)
x:+v.x
y:+v.y
SetColor(r,g,b)
Plot(x,y)
If x<0 Or y<0 Or x>GraphicsWidth() Or y>GraphicsHeight()
lost=True
EndIf
EndIf
End Method
End Type
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