c6a9cd69c2
* NEW: Add examples again. I hope correctly this time. git-svn-id: svn://localhost/gambas/trunk@6726 867c0c6c-44f3-4631-809d-bfa615b0a4ec
116 lines
2.3 KiB
Text
116 lines
2.3 KiB
Text
' Gambas class file
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Public Const Normal As Integer = 0
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Public Const Master As Integer = 1
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Property Mode As Integer
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Private $hWindow As Window
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' Ball is needed to calculate movements, of course >:-)
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Private $hBall As Ball
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Private $hPaddle As Paddle
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Private $iMode As Integer
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' This is the Y coordinate we wish to reach with the middle of our paddle
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Private $iY As Integer
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Private $bReady As Boolean
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' Master's control data
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Private $iLastDir As Integer
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Private $hMyPaddle As Paddle
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Public Sub _new(hWnd As Window, hBall As Ball, hPaddle As Paddle, Optional iMode As Integer = Normal)
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$hWindow = hWnd
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$hBall = hBall
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$hPaddle = hPaddle
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$iMode = iMode
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End
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Public Sub Init()
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$bReady = False
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$iLastDir = $hBall.HDir
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' We need to insert an opponent paddle that would block everything to not
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' go into an infinite loop when trying to calculate the ball's positions
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$hMyPaddle = New Paddle($hWindow, - $hPaddle.Dir)
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$hMyPaddle.Reset()
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$hMyPaddle.Y = 0
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$hMyPaddle.Height = $hWindow.Height
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End
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Public Sub Move()
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If $iMode = Normal Then
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Move_Normal()
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Else If $iMode = Master Then
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Move_Master()
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Endif
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End
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Private Sub Move_Normal()
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' Make him beatable...
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If CInt(Rnd(0, 2)) Then Return
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' Just follow the ball
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$iY = $hBall.Y
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Move_Generic()
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End
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Private Sub Move_Master()
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' Calculate the future ball's position and move accordingly
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If Not $bReady Then MasterCalc()
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Move_Generic()
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' If the ball hits this paddle, we can begin calculating again
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If $hBall.HDir <> $iLastDir And $iLastDir = - $hPaddle.Dir Then
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$bReady = False
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Endif
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$iLastDir = $hBall.HDir
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End
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Private Sub Move_Generic()
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Dim iMid As Integer = $hPaddle.Y + ($hPaddle.Height / 2)
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Dim iDiff As Integer = $iY - iMid
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If Abs(iDiff) <= 1 Then Return
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$hPaddle.Y += 2 * Sgn(iDiff)
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End
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Private Sub MasterCalc()
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Dim hMyBall As New Ball($hWindow, True)
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' Use the CBall class to sneakily get the position we have to sit on
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' when the ball arrives at this end
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hMyBall.HDir = $hBall.HDir
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hMyBall.VDir = $hBall.VDir
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hMyBall.X = $hBall.X
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hMyBall.Y = $hBall.Y
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' Simulate the ball flying thither and back again
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While hMyBall.X <> $hPaddle.X
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hMyBall.Move($hMyPaddle, Null)
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Wend
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$iY = hMyBall.Y
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$bReady = True
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End
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Private Sub Mode_Read() As Integer
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Return $iMode
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End
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Private Sub Mode_Write(Value As Integer)
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$iMode = Value
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End
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