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#!/usr/bin/python

# tetris.py

import wx
import random

class Tetris(wx.Frame):
    def __init__(self,parent,id,title):
        wx.Frame.__init__(self,title,size=(180,380))

        self.statusbar = self.CreateStatusBar()
        self.statusbar.SetStatusText('0')
        self.board = Board(self)
        self.board.SetFocus()
        self.board.start()

        self.Centre()
        self.Show(True)
       

class Board(wx.Panel):
    BoardWidth = 10
    BoardHeight = 22
    Speed = 300
    ID_TIMER = 1

    def __init__(self,parent):
        wx.Panel.__init__(self,parent)

        self.timer = wx.Timer(self,Board.ID_TIMER)
        self.isWaitingAfterLine = False
        self.curPiece = Shape()
        self.nextPiece = Shape()
        self.curX = 0
        self.curY = 0
        self.numLinesRemoved = 0
        self.board = []

        self.isStarted = False
        self.isPaused = False

        self.Bind(wx.EVT_PAINT,self.OnPaint)
        self.Bind(wx.EVT_KEY_DOWN,self.OnKeyDown)
        self.Bind(wx.EVT_TIMER,self.OnTimer,id=Board.ID_TIMER)

        self.clearBoard()

    def shapeAt(self,x,y):
        return self.board[(y * Board.BoardWidth) + x]

    def setShapeAt(self,y,shape):
        self.board[(y * Board.BoardWidth) + x] = shape

    def squareWidth(self):
        return self.GetClientSize().GetWidth() / Board.BoardWidth

    def squareHeight(self):
        return self.GetClientSize().GetHeight() / Board.BoardHeight

    def start(self):
        if self.isPaused:
            return

        self.isStarted = True
        self.isWaitingAfterLine = False
        self.numLinesRemoved = 0
        self.clearBoard()

        self.newPiece()
        self.timer.Start(Board.Speed)

    def pause(self):
        if not self.isStarted:
            return

        self.isPaused = not self.isPaused
        statusbar = self.GetParent().statusbar

        if self.isPaused:
            self.timer.Stop()
            statusbar.SetStatusText('paused')
        else:
            self.timer.Start(Board.Speed)
            statusbar.SetStatusText(str(self.numLinesRemoved))

        self.Refresh()

    def clearBoard(self):
        for i in range(Board.BoardHeight * Board.BoardWidth):
            self.board.append(Tetrominoes.NoShape)

    def OnPaint(self,event):

        dc = wx.PaintDC(self)        

        size = self.GetClientSize()
        boardTop = size.GetHeight() - Board.BoardHeight * self.squareHeight()
        
        for i in range(Board.BoardHeight):
            for j in range(Board.BoardWidth):
                shape = self.shapeAt(j,Board.BoardHeight - i - 1)
                if shape != Tetrominoes.NoShape:
                    self.drawSquare(dc,0 + j * self.squareWidth(),boardTop + i * self.squareHeight(),shape)

        if self.curPiece.shape() != Tetrominoes.NoShape:
            for i in range(4):
                x = self.curX + self.curPiece.x(i)
                y = self.curY - self.curPiece.y(i)
                self.drawSquare(dc,0 + x * self.squareWidth(),boardTop + (Board.BoardHeight - y - 1) * self.squareHeight(),self.curPiece.shape())


    def OnKeyDown(self,event):
        if not self.isStarted or self.curPiece.shape() == Tetrominoes.NoShape:
            event.Skip()
            return

        keycode = event.GetKeyCode()

        if keycode == ord('P') or keycode == ord('p'):
            self.pause()
            return
        if self.isPaused:
            return
        elif keycode == wx.WXK_LEFT:
            self.tryMove(self.curPiece,self.curX - 1,self.curY)
        elif keycode == wx.WXK_RIGHT:
            self.tryMove(self.curPiece,self.curX + 1,self.curY)
        elif keycode == wx.WXK_DOWN:
            self.tryMove(self.curPiece.rotatedRight(),self.curX,self.curY)
        elif keycode == wx.WXK_UP:
            self.tryMove(self.curPiece.rotatedLeft(),self.curY)
        elif keycode == wx.WXK_SPACE:
            self.dropDown()
        elif keycode == ord('D') or keycode == ord('d'):
            self.oneLineDown()
        else:
            event.Skip()


    def OnTimer(self,event):
        if event.GetId() == Board.ID_TIMER:
            if self.isWaitingAfterLine:
                self.isWaitingAfterLine = False
                self.newPiece()
            else:
                self.oneLineDown()
        else:
            event.Skip()


    def dropDown(self):
        newY = self.curY
        while newY > 0:
            if not self.tryMove(self.curPiece,newY - 1):
                break
            newY -= 1

        self.pieceDropped()

    def oneLineDown(self):
        if not self.tryMove(self.curPiece,self.curY - 1):
            self.pieceDropped()


    def pieceDropped(self):
        for i in range(4):
            x = self.curX + self.curPiece.x(i)
            y = self.curY - self.curPiece.y(i)
            self.setShapeAt(x,self.curPiece.shape())

        self.removeFullLines()

        if not self.isWaitingAfterLine:
            self.newPiece()


    def removeFullLines(self):
        numFullLines = 0

        statusbar = self.GetParent().statusbar

        rowsToRemove = []

        for i in range(Board.BoardHeight):
            n = 0
            for j in range(Board.BoardWidth):
                if not self.shapeAt(j,i) == Tetrominoes.NoShape:
                    n = n + 1

            if n == 10:
                rowsToRemove.append(i)

        rowsToRemove.reverse()

        for m in rowsToRemove:
            for k in range(m,Board.BoardHeight):
                for l in range(Board.BoardWidth):
                        self.setShapeAt(l,k,self.shapeAt(l,k + 1))

            numFullLines = numFullLines + len(rowsToRemove)

            if numFullLines > 0:
                self.numLinesRemoved = self.numLinesRemoved + numFullLines
                statusbar.SetStatusText(str(self.numLinesRemoved)) 
                self.isWaitingAfterLine = True
                self.curPiece.setShape(Tetrominoes.NoShape)
                self.Refresh()


    def newPiece(self):
        self.curPiece = self.nextPiece
        statusbar = self.GetParent().statusbar
        self.nextPiece.setRandomShape()
        self.curX = Board.BoardWidth / 2 + 1
        self.curY = Board.BoardHeight - 1 + self.curPiece.minY()

        if not self.tryMove(self.curPiece,self.curY):
            self.curPiece.setShape(Tetrominoes.NoShape)
            self.timer.Stop()
            self.isStarted = False
            statusbar.SetStatusText('Game over')

    def tryMove(self,newPiece,newX,newY):
        for i in range(4):
            x = newX + newPiece.x(i)
            y = newY - newPiece.y(i)
            if x < 0 or x >= Board.BoardWidth or y < 0 or y >= Board.BoardHeight:
                return False
            if self.shapeAt(x,y) != Tetrominoes.NoShape:
                return False

        self.curPiece = newPiece
        self.curX = newX
        self.curY = newY
        self.Refresh()
        return True


    def drawSquare(self,dc,shape):
        colors = ['#000000','#CC6666','#66CC66','#6666CC','#CCCC66','#CC66CC','#66CCCC','#DAAA00']

        light = ['#000000','#F89FAB','#79FC79','#7979FC','#FCFC79','#FC79FC','#79FCFC','#FCC600']

        dark = ['#000000','#803C3B','#3B803B','#3B3B80','#80803B','#803B80','#3B8080','#806200']

        pen = wx.Pen(light[shape])
        pen.SetCap(wx.CAP_PROJECTING)
        dc.SetPen(pen)

        dc.DrawLine(x,y + self.squareHeight() - 1,y)
        dc.DrawLine(x,x + self.squareWidth() - 1,y)

        darkpen = wx.Pen(dark[shape])
        darkpen.SetCap(wx.CAP_PROJECTING)
        dc.SetPen(darkpen)

        dc.DrawLine(x + 1,y + self.squareHeight() - 1)
        dc.DrawLine(x + self.squareWidth() - 1,y + 1)

        dc.SetPen(wx.TRANSPARENT_PEN)
        dc.SetBrush(wx.Brush(colors[shape]))
        dc.DrawRectangle(x + 1,y + 1,self.squareWidth() - 2,self.squareHeight() - 2)


class Tetrominoes(object):
    NoShape = 0
    ZShape = 1
    SShape = 2
    LineShape = 3
    TShape = 4
    SquareShape = 5
    LShape = 6
    MirroredLShape = 7


class Shape(object):
    coordsTable = (
        ((0,0),(0,0)),((0,-1),(-1,1)),(1,1),2)),((-1,((1,1))
    )

    def __init__(self):
        self.coords = [[0,0] for i in range(4)]
        self.pieceShape = Tetrominoes.NoShape

        self.setShape(Tetrominoes.NoShape)

    def shape(self):
        return self.pieceShape

    def setShape(self,shape):
        table = Shape.coordsTable[shape]
        for i in range(4):
            for j in range(2):
                self.coords[i][j] = table[i][j]

        self.pieceShape = shape

    def setRandomShape(self):
        self.setShape(random.randint(1,7))

    def x(self,index):
        return self.coords[index][0]

    def y(self,index):
        return self.coords[index][1]

    def setX(self,index,x):
        self.coords[index][0] = x

    def setY(self,y):
        self.coords[index][1] = y

    def minX(self):
        m = self.coords[0][0]
        for i in range(4):
            m = min(m,self.coords[i][0])

        return m

    def maxX(self):
        m = self.coords[0][0]
        for i in range(4):
            m = max(m,self.coords[i][0])

        return m

    def minY(self):
        m = self.coords[0][1]
        for i in range(4):
            m = min(m,self.coords[i][1])

        return m

    def maxY(self):
        m = self.coords[0][1]
        for i in range(4):
            m = max(m,self.coords[i][1])

        return m

    def rotatedLeft(self):
        if self.pieceShape == Tetrominoes.SquareShape:
            return self

        result = Shape()
        result.pieceShape = self.pieceShape
        for i in range(4):
            result.setX(i,self.y(i))
            result.setY(i,-self.x(i))

        return result

    def rotatedRight(self):
        if self.pieceShape == Tetrominoes.SquareShape:
            return self

        result = Shape()
        result.pieceShape = self.pieceShape
        for i in range(4):
            result.setX(i,-self.y(i))
            result.setY(i,self.x(i))

        return result


app = wx.App()
Tetris(None,-1,'Tetris')
app.MainLoop()

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