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- GraphicsWindow.KeyDown = HandleKey
- GraphicsWindow.BackgroundColor = GraphicsWindow.GetColorFromRGB( 253, 252, 251 )
- While "True"
- BOXES = 4 ' number of boxes per piece
- BWIDTH = 25 ' box width in pixels
- XOFFSET = 40 ' Screen X offset in pixels of where the board starts
- YOFFSET = 40 ' Screen Y offset in pixels of where the board starts
- CWIDTH = 10 ' Canvas Width, in number of boxes
- CHEIGHT = 20 ' Canvas Height, in number of boxes.
- STARTDELAY = 800
- ENDDELAY = 175
- PREVIEW_xpos = 13
- PREVIEW_ypos = 2
- GraphicsWindow.Clear()
- GraphicsWindow.Title = "Small Basic Tetris"
- GraphicsWindow.Height = 580
- GraphicsWindow.Width = 700
- GraphicsWindow.Show()
- SetupTemplates()
- SetupCanvas()
- MainLoop()
- GraphicsWindow.ShowMessage( "Game Over", "Small Basic Tetris" )
- EndWhile
- Sub MainLoop
- template = Text.Append("template", Math.GetRandomNumber(7))
- CreatePiece() ' in: template ret: h
- nextPiece = h
- end = 0
- sessionDelay = STARTDELAY
- While end = 0
- If sessionDelay > ENDDELAY Then
- sessionDelay = sessionDelay - 1
- EndIf
- delay = sessionDelay
- thisPiece = nextPiece
- template = Text.Append("template", Math.GetRandomNumber(7))
- CreatePiece() ' in: template ret: h
- nextPiece = h
- DrawPreviewPiece()
- h = thisPiece
- ypos = 0
- done = 0
- xpos = 3 ' always drop from column 3
- CheckStop() ' in: ypos, xpos, h ret: done
- If done = 1 Then
- ypos = ypos - 1
- MovePiece() 'in: ypos, xpos, h
- end = 1
- EndIf
- yposdelta = 0
- While done = 0 Or yposdelta > 0
- MovePiece() 'in: ypos, xpos, h
- ' Delay, but break if the delay get set to 0 if the piece gets dropped
- delayIndex = delay
- While delayIndex > 0 And delay > 0
- Program.Delay(10)
- delayIndex = delayIndex - 10
- EndWhile
- If yposdelta > 0 Then
- yposdelta = yposdelta - 1 ' used to create freespin, when the piece is rotated
- Else
- ypos = ypos + 1 ' otherwise, move the piece down.
- EndIf
- ' Check if the piece should stop.
- CheckStop() ' in: ypos, xpos, h ret: done
- EndWhile
- EndWhile
- EndSub
- Sub HandleKey
- ' Stop game
- If GraphicsWindow.LastKey = "Escape" Then
- Program.End()
- EndIf
- ' Move piece left
- If GraphicsWindow.LastKey = "Left" Then
- moveDirection = -1
- ValidateMove() ' in: ypos, xpos, h, moveDirection ret: invalidMove = 1 or -1 or 2 if move is invalid, otherwise 0
- If invalidMove = 0 Then
- xpos = xpos + moveDirection
- EndIf
- MovePiece() 'in: ypos, xpos, h
- EndIf
- ' Move piece right
- If GraphicsWindow.LastKey = "Right" Then
- moveDirection = 1
- ValidateMove() ' in: ypos, xpos, h, moveDirection ret: invalidMove = 1 or -1 or 2 if move is invalid, otherwise 0
- If invalidMove = 0 Then
- xpos = xpos + moveDirection
- EndIf
- MovePiece() 'in: ypos, xpos, h
- EndIf
- ' Move piece down
- If GraphicsWindow.LastKey = "Down" or GraphicsWindow.LastKey = "Space" Then
- delay = 0
- EndIf
- ' Rotate piece
- If GraphicsWindow.LastKey = "Up" Then
- basetemplate = Array.GetValue(h, -1) ' Array.GetValue(h, -1) = the template name
- template = "temptemplate"
- rotation = "CW"
- CopyPiece() 'in basetemplate, template, rotation
- Array.SetValue(h, -1, template) ' Array.GetValue(h, -1) = the template name
- moveDirection = 0
- ValidateMove() ' in: ypos, xpos, h, moveDirection ret: invalidMove = 1 or -1 or 2 if move is invalid, otherwise 0
- ' See if it can be moved so that it will rotate.
- xposbk = xpos
- yposdelta = 0
- While yposdelta = 0 And Math.Abs(xposbk - xpos) < 3 ' move up to 3 times only
- ' if the rotation move worked, copy the temp to "rotatedtemplate" and use that from now on
- If invalidMove = 0 Then
- basetemplate = template
- template = "rotatedtemplate"
- Array.SetValue(h, -1, template) ' Array.GetValue(h, -1) = the template name
- rotation = "COPY"
- CopyPiece() 'in basetemplate, template, rotation
- yposdelta = 1 ' Don't move down if we rotate
- MovePiece() 'in: ypos, xpos, h
- ElseIf invalidMove = 2 Then
- ' Don't support shifting piece when hitting another piece to the right or left.
- xpos = 99 ' exit the loop
- Else
- ' if the rotated piece can't be placed, move it left or right and try again.
- xpos = xpos - invalidMove
- ValidateMove() ' in: ypos, xpos, h, moveDirection ret: invalidMove = 1 or -1 or 2 if move is invalid, otherwise 0
- EndIf
- EndWhile
- If invalidMove <> 0 Then
- xpos = xposbk
- Array.SetValue(h, -1, basetemplate) ' Array.GetValue(h, -1) = the template name
- template = ""
- EndIf
- EndIf
- EndSub
- Sub DrawPreviewPiece
- xpos = PREVIEW_xpos
- ypos = PREVIEW_ypos
- h = nextPiece
- XOFFSETBK = XOFFSET
- YOFFSETBK = YOFFSET
- XOFFSET = XOFFSET + Array.GetValue(Array.GetValue(h, -1), "pviewx") ' Array.GetValue(h, -1) = the template name
- YOFFSET = YOFFSET + Array.GetValue(Array.GetValue(h, -1), "pviewy") ' Array.GetValue(h, -1) = the template name
- MovePiece() 'in: ypos, xpos, h
- XOFFSET = XOFFSETBK
- YOFFSET = YOFFSETBK
- EndSub
- ' creates template that's a rotated basetemplate
- Sub CopyPiece 'in basetemplate, template, rotation
- L = Array.GetValue(basetemplate, "dim")
- If rotation = "CW" Then
- For i = 0 to BOXES - 1 ' x' = y y' = L - 1 - x
- v = Array.GetValue(basetemplate, i)
- 'x = Math.Floor(v/10)
- 'y = Math.Remainder(v, 10)
- ' new x and y
- x = (Math.Remainder(v, 10))
- y = (L - 1 - Math.Floor(v/10))
- Array.SetValue(template, i, x * 10 + y)
- EndFor
- ' Count-Cockwise is not currently used
- ElseIf rotation = "CCW" Then
- For i = 0 to BOXES - 1 ' x' = L - 1 - y y' = x
- v = Array.GetValue(basetemplate, i)
- 'x = Math.Floor(v/10)
- 'y = Math.Remainder(v, 10)
- ' new x and y
- x = (L - 1 - Math.Remainder(v, 10))
- y = Math.Floor(v/10)
- Array.SetValue(template, i, x * 10 + y)
- EndFor
- ElseIf rotation = "COPY" Then
- For i = 0 to BOXES - 1
- Array.SetValue(template, i, Array.GetValue(basetemplate, i))
- EndFor
- Else
- GraphicsWindow.ShowMessage("invalid parameter", "Error")
- Program.End()
- EndIf
- ' Copy the remain properties from basetemplate to template.
- Array.SetValue(template, "color", Array.GetValue(basetemplate, "color"))
- Array.SetValue(template, "dim", Array.GetValue(basetemplate, "dim"))
- Array.SetValue(template, "pviewx", Array.GetValue(basetemplate, "pviewx"))
- Array.SetValue(template, "pviewy", Array.GetValue(basetemplate, "pviewy"))
- EndSub
- Sub CreatePiece ' in: template ret: h
- ' Create a new handle, representing an arrayName, that will represent the piece
- hcount = hcount + 1
- h = Text.Append("piece", hcount)
- Array.SetValue(h, -1, template) ' Array.GetValue(h, -1) = the template name
- GraphicsWindow.PenWidth = 1
- GraphicsWindow.PenColor = "Black"
- GraphicsWindow.BrushColor = Array.GetValue(template, "color")
- For i = 0 to BOXES - 1
- s = Shapes.AddRectangle(BWIDTH, BWIDTH)
- Shapes.Move(s, -BWIDTH, -BWIDTH) ' move off screen
- Array.SetValue(h, i, s)
- EndFor
- EndSub
- Sub MovePiece 'in: ypos, xpos, h. ypos/xpos is 0-19, representing the top/left box coordinate of the piece on the canvas. h returned by CreatePiece
- For i = 0 to BOXES - 1
- v = Array.GetValue(Array.GetValue(h, -1), i) ' Array.GetValue(h, -1) = the template name
- x = Math.Floor(v/10)
- y = Math.Remainder(v, 10)
- ' Array.GetValue(h, i) = box for piece h.
- ' xpos/ypos = are topleft of shape. x/y is the box offset within the shape.
- Shapes.Move(Array.GetValue(h, i), XOFFSET + xpos * BWIDTH + x * BWIDTH, YOFFSET + ypos * BWIDTH + y * BWIDTH)
- EndFor
- EndSub
- Sub ValidateMove ' in: ypos, xpos, h, moveDirection ret: invalidMove = 1 or -1 or 2 if move is invalid, otherwise 0
- i = 0
- invalidMove = 0
- While i < BOXES
- v = Array.GetValue(Array.GetValue(h, -1), i) ' Array.GetValue(h, -1) = the template name
- 'x/y is the box offset within the shape.
- x = Math.Floor(v/10)
- y = Math.Remainder(v, 10)
- If (x + xpos + moveDirection) < 0 Then
- invalidMove = -1
- i = BOXES ' force getting out of the loop
- EndIf
- If (x + xpos + moveDirection) >= CWIDTH Then
- invalidMove = 1
- i = BOXES ' force getting out of the loop
- EndIf
- If Array.GetValue("c", (x + xpos + moveDirection) + (y + ypos) * CWIDTH) <> "." Then
- invalidMove = 2
- i = BOXES ' force getting out of the loop
- EndIf
- i = i + 1
- EndWhile
- EndSub
- Sub CheckStop ' in: ypos, xpos, h ret: done
- done = 0
- i = 0
- While i < BOXES
- v = Array.GetValue(Array.GetValue(h, -1), i) ' Array.GetValue(h, -1) = the template name
- 'x/y is the box offset within the shape.
- x = Math.Floor(v/10)
- y = Math.Remainder(v, 10)
- If y + ypos > CHEIGHT Or Array.GetValue("c", (x + xpos) + (y + ypos) * CWIDTH) <> "." Then
- done = 1
- i = BOXES ' force getting out of the loop
- EndIf
- i = i + 1
- EndWhile
- ' If we need to stop the piece, move the box handles to the canvas
- If done = 1 Then
- For i = 0 to BOXES - 1
- v = Array.GetValue(Array.GetValue(h, -1), i) ' Array.GetValue(h, -1) = the template name
- 'x = Math.Floor(v/10)
- 'y = Math.Remainder(v, 10)
- Array.SetValue("c", (Math.Floor(v/10) + xpos) + (Math.Remainder(v, 10) + ypos - 1) * CWIDTH, Array.GetValue(h, i))
- EndFor
- ' 1 points for every piece successfully dropped
- score = score + 1
- PrintScore()
- ' Delete clared lines
- DeleteLines()
- EndIf
- EndSub
- Sub DeleteLines
- linesCleared = 0
- ' Iterate over each row, starting from the bottom
- For y = CHEIGHT - 1 to 0 Step -1
- ' Check to see if the whole row is filled
- x = CWIDTH
- While x = CWIDTH
- x = 0
- While x < CWIDTH
- piece = Array.GetValue("c", x + y * CWIDTH)
- If piece = "." then
- x = CWIDTH
- EndIf
- x = x + 1
- EndWhile
- ' if non of them were empty (i.e "."), then remove the line.
- If x = CWIDTH Then
- ' Delete the line
- For x1 = 0 to CWIDTH - 1
- Shapes.Remove(Array.GetValue("c", x1 + y * CWIDTH))
- EndFor
- linesCleared = linesCleared + 1
- ' Move everything else down one.
- For y1 = y To 1 Step -1
- For x1 = 0 to CWIDTH - 1
- piece = Array.GetValue("c", x1 + (y1 - 1) * CWIDTH)
- Array.SetValue("c", x1 + y1 * CWIDTH, piece)
- Shapes.Move(piece, Shapes.GetLeft(piece), Shapes.GetTop(piece) + BWIDTH)
- EndFor
- EndFor
- EndIf
- EndWhile
- EndFor
- If linesCleared > 0 Then
- score = score + 100 * Math.Round(linesCleared * 2.15 - 1)
- PrintScore()
- EndIf
- EndSub
- Sub SetupCanvas
- ' GraphicsWindow.DrawResizedImage( Flickr.GetRandomPicture( "bricks" ), 0, 0, GraphicsWindow.Width, GraphicsWindow.Height)
- GraphicsWindow.BrushColor = GraphicsWindow.BackgroundColor
- GraphicsWindow.FillRectangle(XOFFSET, YOFFSET, CWIDTH*BWIDTH, CHEIGHT*BWIDTH)
- Program.Delay(200)
- GraphicsWindow.PenWidth = 1
- GraphicsWindow.PenColor = "Pink"
- For x = 0 To CWIDTH-1
- For y = 0 To CHEIGHT-1
- Array.SetValue("c", x + y * CWIDTH, ".") ' "." indicates spot is free
- GraphicsWindow.DrawRectangle(XOFFSET + x * BWIDTH, YOFFSET + y * BWIDTH, BWIDTH, BWIDTH)
- EndFor
- EndFor
- GraphicsWindow.PenWidth = 4
- GraphicsWindow.PenColor = "Black"
- GraphicsWindow.DrawLine(XOFFSET, YOFFSET, XOFFSET, YOFFSET + CHEIGHT*BWIDTH)
- GraphicsWindow.DrawLine(XOFFSET + CWIDTH*BWIDTH, YOFFSET, XOFFSET + CWIDTH*BWIDTH, YOFFSET + CHEIGHT*BWIDTH)
- GraphicsWindow.DrawLine(XOFFSET, YOFFSET + CHEIGHT*BWIDTH, XOFFSET + CWIDTH*BWIDTH, YOFFSET + CHEIGHT*BWIDTH)
- GraphicsWindow.PenColor = "Lime"
- GraphicsWindow.DrawLine(XOFFSET - 4, YOFFSET, XOFFSET - 4, YOFFSET + CHEIGHT*BWIDTH + 6)
- GraphicsWindow.DrawLine(XOFFSET + CWIDTH*BWIDTH + 4, YOFFSET, XOFFSET + CWIDTH*BWIDTH + 4, YOFFSET + CHEIGHT*BWIDTH + 6)
- GraphicsWindow.DrawLine(XOFFSET - 4, YOFFSET + CHEIGHT*BWIDTH + 4, XOFFSET + CWIDTH*BWIDTH + 4, YOFFSET + CHEIGHT*BWIDTH + 4)
- GraphicsWindow.PenColor = "Black"
- GraphicsWindow.BrushColor = "Pink"
- x = XOFFSET + PREVIEW_xpos * BWIDTH - BWIDTH
- y = YOFFSET + PREVIEW_ypos * BWIDTH - BWIDTH
- GraphicsWindow.FillRectangle(x, y, BWIDTH * 5, BWIDTH * 6)
- GraphicsWindow.DrawRectangle(x, y, BWIDTH * 5, BWIDTH * 6)
- GraphicsWindow.FillRectangle(x - 20, y + 190, 310, 170)
- GraphicsWindow.DrawRectangle(x - 20, y + 190, 310, 170)
- GraphicsWindow.BrushColor = "Black"
- GraphicsWindow.FontItalic = "False"
- GraphicsWindow.FontName = "Comic Sans MS"
- GraphicsWindow.FontSize = 16
- GraphicsWindow.DrawText(x, y + 200, "Game control keys:")
- GraphicsWindow.DrawText(x + 25, y + 220, "Left Arrow = Move piece left")
- GraphicsWindow.DrawText(x + 25, y + 240, "Right Arrow = Move piece right")
- GraphicsWindow.DrawText(x + 25, y + 260, "Up Arrow = Rotate piece")
- GraphicsWindow.DrawText(x + 25, y + 280, "Down Arrow = Drop piece")
- GraphicsWindow.DrawText(x, y + 320, "Press to stop game")
- Program.Delay(200) ' without this delay, the above text will use the fontsize of the score
- GraphicsWindow.BrushColor = "Black"
- GraphicsWindow.FontName = "Georgia"
- GraphicsWindow.FontItalic = "True"
- GraphicsWindow.FontSize = 36
- GraphicsWindow.DrawText(x - 20, y + 400, "Small Basic Tetris")
- Program.Delay(200) ' without this delay, the above text will use the fontsize of the score
- GraphicsWindow.FontSize = 16
- GraphicsWindow.DrawText(x - 20, y + 440, "ver.0.1")
- Program.Delay(200) ' without this delay, the above text will use the fontsize of the score
- score = 0
- PrintScore()
- EndSub
- Sub PrintScore
- GraphicsWindow.PenWidth = 4
- GraphicsWindow.BrushColor = "Pink"
- GraphicsWindow.FillRectangle(500, 65, 153, 50)
- GraphicsWindow.BrushColor = "Black"
- GraphicsWindow.DrawRectangle(500, 65, 153, 50)
- GraphicsWindow.FontItalic = "False"
- GraphicsWindow.FontSize = 32
- GraphicsWindow.FontName = "Impact"
- GraphicsWindow.BrushColor = "Black"
- GraphicsWindow.DrawText(505, 70, Text.Append(Text.GetSubText( "00000000", 0, 8 - Text.GetLength( score ) ), score))
- EndSub
- Sub SetupTemplates
- ' each piece has 4 boxes.
- ' the index of each entry within a piece represents the box number (1-4)
- ' the value of each entry represents to box zero-based box coordinate within the piece: tens place is x, ones place y
- '_X_
- '_X_
- '_XX
- Array.SetValue("template1", 0, 10)
- Array.SetValue("template1", 1, 11)
- Array.SetValue("template1", 2, 12)
- Array.SetValue("template1", 3, 22)
- Array.SetValue("template1", "color", "Yellow")
- Array.SetValue("template1", "dim", 3)
- Array.SetValue("template1", "pviewx", -12)
- Array.SetValue("template1", "pviewy", 12)
- '_X_
- '_X_
- 'XX_
- Array.SetValue("template2", 0, 10)
- Array.SetValue("template2", 1, 11)
- Array.SetValue("template2", 2, 12)
- Array.SetValue("template2", 3, 02)
- Array.SetValue("template2", "color", "Magenta")
- Array.SetValue("template2", "dim", 3)
- Array.SetValue("template2", "pviewx", 12)
- Array.SetValue("template2", "pviewy", 12)
- '_X_
- 'XXX
- '_
- Array.SetValue("template3", 0, 10)
- Array.SetValue("template3", 1, 01)
- Array.SetValue("template3", 2, 11)
- Array.SetValue("template3", 3, 21)
- Array.SetValue("template3", "color", "Gray")
- Array.SetValue("template3", "dim", 3)
- Array.SetValue("template3", "pviewx", 0)
- Array.SetValue("template3", "pviewy", 25)
- 'XX_
- 'XX_
- '_
- Array.SetValue("template4", 0, 00)
- Array.SetValue("template4", 1, 10)
- Array.SetValue("template4", 2, 01)
- Array.SetValue("template4", 3, 11)
- Array.SetValue("template4", "color", "Cyan")
- Array.SetValue("template4", "dim", 2)
- Array.SetValue("template4", "pviewx", 12)
- Array.SetValue("template4", "pviewy", 25)
- 'XX_
- '_XX
- '_
- Array.SetValue("template5", 0, 00)
- Array.SetValue("template5", 1, 10)
- Array.SetValue("template5", 2, 11)
- Array.SetValue("template5", 3, 21)
- Array.SetValue("template5", "color", "Green")
- Array.SetValue("template5", "dim", 3)
- Array.SetValue("template5", "pviewx", 0)
- Array.SetValue("template5", "pviewy", 25)
- '_XX
- 'XX_
- '_
- Array.SetValue("template6", 0, 10)
- Array.SetValue("template6", 1, 20)
- Array.SetValue("template6", 2, 01)
- Array.SetValue("template6", 3, 11)
- Array.SetValue("template6", "color", "Blue")
- Array.SetValue("template6", "dim", 3)
- Array.SetValue("template6", "pviewx", 0)
- Array.SetValue("template6", "pviewy", 25)
- '_X
- '_X
- '_X
- '_X
- Array.SetValue("template7", 0, 10)
- Array.SetValue("template7", 1, 11)
- Array.SetValue("template7", 2, 12)
- Array.SetValue("template7", 3, 13)
- Array.SetValue("template7", "color", "Red")
- Array.SetValue("template7", "dim", 4)
- Array.SetValue("template7", "pviewx", 0)
- Array.SetValue("template7", "pviewy", 0)
- EndSub
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