I dug it up and changed the tiny bits to make it work with 4.41 and played around with it. It's simple but it works and my opinion is that even though the user "interface" is as simple as it can get, it works logically and fluidly.
During my many years of professional programming career I've come to learn that "never scrap working code". So my thoughts were like, what if I take this small piece and make it into a tiny casual game where player has to use limited number of lines/junctions and then bunch of "balls" are dropped into the contruction and they should all end up going trough a loop placed somewhere on the screen
Extended ideas were like "have few different types of lines, accelerator, deccelerators, rubber(bouncy ones) etc". And also instead of wackly acting "snow" pixels, implement basic 2D physics for the balls.
Yes, maybe!
Meanwhile, have fun with this little program.
Screenshot: http://www.netphobia.net/jmp/linemadness.png
Code: Select all
EnableExplicit
#RAD = 0.0175
#VEC_SCR_WIDTH = 800
#VEC_SCR_HEIGHT = 600
#VEC_SCR_DEPTH = 16
#VEC_INDICATOR_SIZE = 15
#VEC_SNOWFLAKES = 2000
Structure tVertex
x.l
y.l
EndStructure
Structure tSnowFlake
x.f
y.f
EndStructure
Declare.f findangle(x1.f,y1.f,x2.f,y2.f)
Declare.l Vectorz_Main()
Declare.l Vertex_Add( List Vertex.tVertex(), lX.l, lY.l )
Declare.l Vertex_Display( List Vertex.tVertex(), bS.b )
Vectorz_Main()
Procedure.l Vectorz_Main()
Protected MX.l, MY.l, AddReleased.b = #True, bShowDebug.b = #False
Protected hovered.l
Protected *selected.tVertex, *previous.tVertex, *near1.tVertex, *near2.tVertex, lListPositionForNearest.l
Protected bFound.b, bMovingVertex.b = #False
Protected *temp.tVertex
Protected distance.f, angle.f, tempsnow.f
Protected lCheckX.l, lCheckY.l
Protected lMouseDistance.l, lPreviousDistance.l, lAddSnow.l
NewList Vertex.tVertex()
NewList Snow.tSnowFlake()
Vertex_Add( Vertex.tVertex(), 100, 100 )
Vertex_Add( Vertex.tVertex(), 100, 200 )
Vertex_Add( Vertex.tVertex(), 200, 200 )
Vertex_Add( Vertex.tVertex(), 200, 100 )
*selected = @Vertex()
If InitSprite() = 0 Or InitKeyboard() = 0 Or InitMouse() = 0
MessageRequester("Error", "Can't open DirectX 7 Or later", 0)
Else
If OpenScreen(#VEC_SCR_WIDTH, #VEC_SCR_HEIGHT, #VEC_SCR_DEPTH, "Pixel Madness by Raybarg")
Repeat
FlipBuffers()
ClearScreen(RGB(0,0,0))
ExamineKeyboard()
ExamineMouse()
MX = MouseX()
MY = MouseY()
If KeyboardPushed(#PB_Key_Add)
If AddReleased = #True
Vertex_Add( Vertex.tVertex(), MX, MY )
AddReleased = #False
EndIf
Else
AddReleased = #True
EndIf
bMovingVertex = #False
If MouseButton( #PB_MouseButton_Left ) And bFound = #True
*selected\x = MX
*selected\y = MY
bMovingVertex = #True
ElseIf MouseButton( #PB_MouseButton_Left ) And lListPositionForNearest >= 0
SelectElement( Vertex(), lListPositionForNearest )
InsertElement( Vertex() )
Vertex()\x = MX
Vertex()\y = MY
EndIf
If MouseButton( #PB_MouseButton_Right )
bShowDebug = #True
Else
bShowDebug = #False
EndIf
StartDrawing( ScreenOutput() )
Vertex_Display( Vertex.tVertex(), bShowDebug )
bFound=#False
*previous = #Null
*near1 = #Null
lListPositionForNearest = -1
ForEach Vertex()
If MX >= Vertex()\x - (#VEC_INDICATOR_SIZE/2) And MX <= Vertex()\x + (#VEC_INDICATOR_SIZE/2) And MY >= Vertex()\y - (#VEC_INDICATOR_SIZE/2) And MY <= Vertex()\y + (#VEC_INDICATOR_SIZE/2)
FrontColor( RGB( 200,0,0))
DrawingMode( #PB_2DDrawing_Outlined )
Box( Vertex()\x - (#VEC_INDICATOR_SIZE/2-1), Vertex()\y - (#VEC_INDICATOR_SIZE/2-1), #VEC_INDICATOR_SIZE-1, #VEC_INDICATOR_SIZE-1 )
bFound = #True
If bMovingVertex = #False
*selected.tVertex = @Vertex.tVertex()
EndIf
Break
EndIf
Next
ForEach Vertex()
If *previous = #Null
*previous = @Vertex()
*near1 = @Vertex()
*near2 = @Vertex()
lPreviousDistance = 9999
Else
distance = Sqr( Pow(Vertex()\x-*previous\x,2) + Pow(Vertex()\y-*previous\y,2) )
angle = findangle(Vertex()\x, Vertex()\y, *previous\x, *previous\y)
lCheckX = *previous\x+Cos(angle *#RAD)*(distance/2)
lCheckY = *previous\y+Sin(angle *#RAD)*(distance/2)
lMouseDistance = Sqr( Pow(lCheckX-MX,2) + Pow(lCheckY-MY,2) )
If lMouseDistance < distance/2 And lMouseDistance < lPreviousDistance
*near1 = *previous
*near2 = @Vertex()
lListPositionForNearest = ListIndex( Vertex() )
lPreviousDistance = lMouseDistance
EndIf
*previous = @Vertex()
EndIf
Next
If lListPositionForNearest >= 0 And bFound = #False
LineXY( *near1\x, *near1\y, *near2\x, *near2\y, RGB($FF,$CC,00) )
EndIf
If lAddSnow < #VEC_SNOWFLAKES
AddElement( Snow() )
Snow()\x = Random( #VEC_SCR_WIDTH/2 ) + #VEC_SCR_WIDTH/4
Snow()\y = 1
lAddSnow = lAddSnow +1
EndIf
FrontColor( RGB( 255,255,255))
ForEach Snow()
tempsnow = Snow()\x + Random(100/50)-1
If Point(tempsnow, Snow()\y+1) = 0 And Point(Snow()\x,Snow()\y+1) = 0
Snow()\y = Snow()\y + 1
Snow()\x = tempsnow
ElseIf Point(Snow()\x+1,Snow()\y) = 0 And Point(Snow()\x+1,Snow()\y+1) = 0 And Point(Snow()\x+1,Snow()\y-1) = 0
Snow()\y = Snow()\y -1
Snow()\x = Snow()\x +1
ElseIf Point(Snow()\x-1,Snow()\y) = 0 And Point(Snow()\x-1,Snow()\y+1) = 0 And Point(Snow()\x-1,Snow()\y-1) = 0
Snow()\y = Snow()\y -1
Snow()\x = Snow()\x -1
EndIf
Plot( Snow()\x, Snow()\y )
If Snow()\y >= #VEC_SCR_HEIGHT-5
Snow()\x = Random( #VEC_SCR_WIDTH/2 ) + #VEC_SCR_WIDTH/4
Snow()\y = 1
EndIf
Next
LineXY( MX - 6, MY, MX+6, MY, RGB($FF,$CC,00) )
LineXY( MX, MY - 6, MX, MY+6, RGB($FF,$CC,00) )
StopDrawing()
Until KeyboardPushed(#PB_Key_Escape)
Else
MessageRequester("Error", "Could not open fullscreen mode", 0)
EndIf
EndIf
ProcedureReturn #Null
EndProcedure
Procedure.l Vertex_Add( List Vertex.tVertex(), lX.l, lY.l )
AddElement( Vertex() )
Vertex()\x = lX
Vertex()\y = lY
ProcedureReturn #Null
EndProcedure
Procedure.l Vertex_Display( List Vertex.tVertex(), bS.b )
Protected lPX.l, lPY.l, distance.f, angle.f
DrawingMode( #PB_2DDrawing_Outlined )
ResetList( Vertex() )
While NextElement( Vertex() )
FrontColor( RGB( 128,128,128))
Box( Vertex()\x - (#VEC_INDICATOR_SIZE/2), Vertex()\y - (#VEC_INDICATOR_SIZE/2), #VEC_INDICATOR_SIZE+1, #VEC_INDICATOR_SIZE+1 )
If lPX <> 0
LineXY( Vertex()\x, Vertex()\y, lPX, lPY )
If bS = #True
distance = Sqr( Pow(Vertex()\x-lPX,2) + Pow(Vertex()\y-lPY,2) )
angle = findangle(Vertex()\x, Vertex()\y, lPX, lPY)
FrontColor( RGB( $80,00,00))
Circle( lPX+Cos(angle *#RAD)*(distance/2), lPY+Sin(angle *#RAD)*(distance/2), distance/2 )
EndIf
EndIf
lPX = Vertex()\x
lPY = Vertex()\y
Wend
ProcedureReturn #Null
EndProcedure
Procedure.f findangle( x1.f, y1.f, x2.f, y2.f )
Protected a.f, b.f, c.f, angle.f
a.f = x1 - x2
b.f = y2 - y1
c.f = Sqr( a * a + b * b )
angle.f = ACos( a / c ) * 57.29577
If y1 < y2
angle = 360.0 - angle
EndIf
ProcedureReturn angle.f
EndProcedure
Love It! 
