from panda3d.core import NodePath, VBase4
from direct.showbase.DirectObject import DirectObject
from direct.showbase.RandomNumGen import RandomNumGen
from toontown.minigame.MazeBase import MazeBase
import CogdoMazeGameGlobals as Globals
from CogdoMazeGameObjects import CogdoMazeWaterCooler
import CogdoMazeData
import CogdoUtil

class CogdoMaze(MazeBase, DirectObject):

    def __init__(self, model, data, cellWidth):
        MazeBase.__init__(self, model, data, cellWidth)
        self._initWaterCoolers()
        self.elevatorPos = self.maze.find('**/elevator_loc').getPos(render)
        self.exitPos = self.maze.find('**/exit_loc').getPos(render)
        self.maze.flattenStrong()
        self._clearColor = VBase4(base.win.getClearColor())
        self._clearColor.setW(1.0)
        base.win.setClearColor(VBase4(0.0, 0.0, 0.0, 1.0))
        if __debug__ and base.config.GetBool('cogdomaze-dev', False):
            self._initCollisionVisuals()

    def _initWaterCoolers(self):
        self._waterCoolers = []
        self._waterCoolerRoot = NodePath('WaterCoolerRoot')
        self._waterCoolerRoot.reparentTo(render)
        models = []
        for model in self.maze.findAllMatches('**/*waterCooler'):
            model.wrtReparentTo(render)
            models.append((model.getPos(self.maze), model.getHpr(self.maze), model))

        models.sort()
        i = 0
        for pos, hpr, model in models:
            wc = CogdoMazeWaterCooler(i, model)
            wc.wrtReparentTo(self._waterCoolerRoot)
            wc.setPos(pos)
            wc.setHpr(hpr)
            self._waterCoolers.append(wc)
            i += 1

        self._waterCoolerRoot.stash()

    def getWaterCoolers(self):
        return self._waterCoolers

    def isAccessible(self, tX, tY):
        if tX < 0 or tY < 0 or tX >= self.width or tY >= self.height:
            return 0
        return self.collisionTable[tY][tX] != 1

    def destroy(self):
        for waterCooler in self._waterCoolers:
            waterCooler.destroy()

        del self._waterCoolers
        self._waterCoolerRoot.removeNode()
        del self._waterCoolerRoot
        base.win.setClearColor(self._clearColor)
        del self._clearColor
        MazeBase.destroy(self)
        if __debug__ and hasattr(self, '_cubes'):
            self.ignoreAll()
            self._cubes.removeNode()
            del self._cubes

    def onstage(self):
        MazeBase.onstage(self)
        self._waterCoolerRoot.unstash()

    def offstage(self):
        self._waterCoolerRoot.stash()
        MazeBase.offstage(self)


BARRIER_DATA_RIGHT = 1
BARRIER_DATA_TOP = 1

class CogdoMazeFactory:

    def __init__(self, randomNumGen, width, height, frameWallThickness = Globals.FrameWallThickness, cogdoMazeData = CogdoMazeData):
        self._rng = RandomNumGen(randomNumGen)
        self.width = width
        self.height = height
        self.frameWallThickness = frameWallThickness
        self._cogdoMazeData = cogdoMazeData
        self.quadrantSize = self._cogdoMazeData.QuadrantSize
        self.cellWidth = self._cogdoMazeData.QuadrantCellWidth

    def getMazeData(self):
        if not hasattr(self, '_data'):
            self._generateMazeData()
        return self._data

    def createCogdoMaze(self, flattenModel = True):
        if not hasattr(self, '_maze'):
            self._loadAndBuildMazeModel(flatten=flattenModel)
        return CogdoMaze(self._model, self._data, self.cellWidth)

    def _gatherQuadrantData(self):
        self.openBarriers = []
        barrierItems = range(Globals.TotalBarriers)
        self._rng.shuffle(barrierItems)
        for i in barrierItems[0:len(barrierItems) - Globals.NumBarriers]:
            self.openBarriers.append(i)

        self.quadrantData = []
        quadrantKeys = self._cogdoMazeData.QuadrantCollisions.keys()
        self._rng.shuffle(quadrantKeys)
        i = 0
        for y in xrange(self.height):
            for x in xrange(self.width):
                key = quadrantKeys[i]
                collTable = self._cogdoMazeData.QuadrantCollisions[key]
                angle = self._cogdoMazeData.QuadrantAngles[self._rng.randint(0, len(self._cogdoMazeData.QuadrantAngles) - 1)]
                self.quadrantData.append((key, collTable[angle], angle))
                i += 1
                if x * y >= self._cogdoMazeData.NumQuadrants:
                    i = 0

    def _generateBarrierData(self):
        data = []
        for y in xrange(self.height):
            data.append([])
            for x in xrange(self.width):
                if x == self.width - 1:
                    ax = -1
                else:
                    ax = 1
                if y == self.height - 1:
                    ay = -1
                else:
                    ay = 1
                data[y].append([ax, ay])

        dirUp = 0
        dirDown = 1
        dirLeft = 2
        dirRight = 3

        def getAvailableDirections(ax, ay, ignore = None):
            dirs = []
            if ax - 1 >= 0 and data[ay][ax - 1][BARRIER_DATA_RIGHT] == 1 and (ax, ay) != ignore:
                dirs.append(dirLeft)
            if ax + 1 < self.width and data[ay][ax][BARRIER_DATA_RIGHT] == 1 and (ax, ay) != ignore:
                dirs.append(dirRight)
            if ay - 1 >= 0 and data[ay - 1][ax][BARRIER_DATA_TOP] == 1 and (ax, ay) != ignore:
                dirs.append(dirDown)
            if ay + 1 < self.height and data[ay][ax][BARRIER_DATA_TOP] == 1 and (ax, ay) != ignore:
                dirs.append(dirUp)
            return dirs

        visited = []

        def tryVisitNeighbor(ax, ay, ad):
            if ad == dirUp:
                if data[ay][ax] in visited:
                    return None
                visited.append(data[ay][ax])
                data[ay][ax][BARRIER_DATA_TOP] = 0
                ay += 1
            elif ad == dirDown:
                if data[ay - 1][ax] in visited:
                    return None
                visited.append(data[ay - 1][ax])
                data[ay - 1][ax][BARRIER_DATA_TOP] = 0
                ay -= 1
            elif ad == dirLeft:
                if data[ay][ax - 1] in visited:
                    return None
                visited.append(data[ay][ax - 1])
                data[ay][ax - 1][BARRIER_DATA_RIGHT] = 0
                ax -= 1
            elif ad == dirRight:
                if data[ay][ax] in visited:
                    return None
                visited.append(data[ay][ax])
                data[ay][ax][BARRIER_DATA_RIGHT] = 0
                ax += 1
            return (ax, ay)

        def openBarriers(x, y):
            dirs = getAvailableDirections(x, y)
            for dir in dirs:
                next = tryVisitNeighbor(x, y, dir)
                if next is not None:
                    openBarriers(*next)

            return

        x = self._rng.randint(0, self.width - 1)
        y = self._rng.randint(0, self.height - 1)
        openBarriers(x, y)
        self._barrierData = data
        return

    def _generateMazeData(self):
        if not hasattr(self, 'quadrantData'):
            self._gatherQuadrantData()
        self._data = {}
        self._data['width'] = (self.width + 1) * self.frameWallThickness + self.width * self.quadrantSize
        self._data['height'] = (self.height + 1) * self.frameWallThickness + self.height * self.quadrantSize
        self._data['originX'] = int(self._data['width'] / 2)
        self._data['originY'] = int(self._data['height'] / 2)
        collisionTable = []
        horizontalWall = [ 1 for x in xrange(self._data['width']) ]
        collisionTable.append(horizontalWall)
        for i in xrange(0, len(self.quadrantData), self.width):
            for y in xrange(self.quadrantSize):
                row = [1]
                for x in xrange(i, i + self.width):
                    if x == 1 and y < self.quadrantSize / 2 - 2:
                        newData = []
                        for j in self.quadrantData[x][1][y]:
                            if j == 0:
                                newData.append(2)
                            else:
                                newData.append(j + 0)

                        row += newData + [1]
                    else:
                        row += self.quadrantData[x][1][y] + [1]

                collisionTable.append(row)

            collisionTable.append(horizontalWall[:])

        barriers = Globals.MazeBarriers
        for i in xrange(len(barriers)):
            for coords in barriers[i]:
                collisionTable[coords[1]][coords[0]] = 0

        y = self._data['originY']
        for x in xrange(len(collisionTable[y])):
            if collisionTable[y][x] == 0:
                collisionTable[y][x] = 2

        x = self._data['originX']
        for y in xrange(len(collisionTable)):
            if collisionTable[y][x] == 0:
                collisionTable[y][x] = 2

        self._data['collisionTable'] = collisionTable

    def _loadAndBuildMazeModel(self, flatten = False):
        self.getMazeData()
        self._model = NodePath('CogdoMazeModel')
        levelModel = CogdoUtil.loadMazeModel('level')
        self.quadrants = []
        quadrantUnitSize = int(self.quadrantSize * self.cellWidth)
        frameActualSize = self.frameWallThickness * self.cellWidth
        size = quadrantUnitSize + frameActualSize
        halfWidth = int(self.width / 2)
        halfHeight = int(self.height / 2)
        i = 0
        for y in xrange(self.height):
            for x in xrange(self.width):
                ax = (x - halfWidth) * size
                ay = (y - halfHeight) * size
                extension = ''
                if hasattr(getBase(), 'air'):
                    extension = '.bam'
                filepath = self.quadrantData[i][0] + extension
                angle = self.quadrantData[i][2]
                m = self._createQuadrant(filepath, i, angle, quadrantUnitSize)
                m.setPos(ax, ay, 0)
                m.reparentTo(self._model)
                self.quadrants.append(m)
                i += 1

        quadrantHalfUnitSize = quadrantUnitSize * 0.5
        barrierModel = CogdoUtil.loadMazeModel('grouping_blockerDivider').find('**/divider')
        y = 3
        for x in xrange(self.width):
            if x == (self.width - 1) / 2:
                continue
            ax = (x - halfWidth) * size
            ay = (y - halfHeight) * size - quadrantHalfUnitSize - (self.cellWidth - 0.5)
            b = NodePath('barrier')
            barrierModel.instanceTo(b)
            b.setPos(ax, ay, 0)
            b.reparentTo(self._model)

        offset = self.cellWidth - 0.5
        for x in (0, 3):
            for y in xrange(self.height):
                ax = (x - halfWidth) * size - quadrantHalfUnitSize - frameActualSize + offset
                ay = (y - halfHeight) * size
                b = NodePath('barrier')
                barrierModel.instanceTo(b)
                b.setPos(ax, ay, 0)
                b.setH(90)
                b.reparentTo(self._model)

            offset -= 2.0

        barrierModel.removeNode()
        levelModel.getChildren().reparentTo(self._model)
        for np in self._model.findAllMatches('**/*lightCone*'):
            CogdoUtil.initializeLightCone(np, 'fixed', 3)

        if flatten:
            self._model.flattenStrong()
        return self._model

    def _createQuadrant(self, filepath, serialNum, angle, size):
        root = NodePath('QuadrantRoot-%i' % serialNum)
        quadrant = loader.loadModel(filepath)
        quadrant.getChildren().reparentTo(root)
        root.setH(angle)
        return root