from direct.showbase.PythonUtil import Enum
from direct.gui.DirectGui import DirectFrame, DGG
from pandac.PandaModules import Vec2, VBase4F
from pandac.PandaModules import CardMaker, NodePath
from pandac.PandaModules import Texture, PNMImage
DEFAULT_MASK_RESOLUTION = 32
DEFAULT_RADIUS_RATIO = 0.05
MAP_RESOLUTION = 320
MazeRevealType = Enum(('SmoothCircle', 'HardCircle', 'Square'))
MAZE_REVEAL_TYPE = MazeRevealType.SmoothCircle

class MazeMapGui(DirectFrame):
    notify = directNotify.newCategory('MazeMapGui')

    def __init__(self, mazeCollTable, maskResolution = None, radiusRatio = None, bgColor = (0.8, 0.8, 0.8), fgColor = (0.5, 0.5, 0.5, 1.0)):
        DirectFrame.__init__(self, relief=None, state=DGG.NORMAL, sortOrder=DGG.BACKGROUND_SORT_INDEX)
        self.hide()
        self._bgColor = bgColor
        self._fgColor = fgColor
        self._mazeCollTable = mazeCollTable
        self._mazeWidth = len(self._mazeCollTable[0])
        self._mazeHeight = len(self._mazeCollTable)
        self._maskResolution = maskResolution or DEFAULT_MASK_RESOLUTION
        if radiusRatio is None:
            self._radius = self._maskResolution * DEFAULT_RADIUS_RATIO
        else:
            self._radius = self._maskResolution * radiusRatio
        self._revealedCells = []
        for y in range(self._mazeHeight):
            self._revealedCells.append([])
            for u in range(self._mazeWidth):
                self._revealedCells[y].append(False)

        self._revealFunctions = {MazeRevealType.SmoothCircle: self._revealSmoothCircle,
         MazeRevealType.HardCircle: self._revealHardCircle,
         MazeRevealType.Square: self._revealSquare}
        self._revealFunction = MAZE_REVEAL_TYPE
        self.map = self._createMapTextureCard()
        self.map.reparentTo(self)
        self.maskedLayer = self.attachNewNode('maskedLayer')
        self.mask = self._createMaskTextureCard()
        self.mask.reparentTo(self)
        self.visibleLayer = self.attachNewNode('visibleLayer')
        self._laffMeterModel = loader.loadModel('phase_3/models/gui/laff_o_meter')
        self._toon2marker = {}
        return

    def _createMapTextureCard(self):
        mapImage = PNMImage(MAP_RESOLUTION, MAP_RESOLUTION)
        mapImage.fill(*self._bgColor)
        fgColor = VBase4F(*self._fgColor)
        for x in range(self._mazeHeight):
            for y in range(self._mazeWidth):
                if self._mazeCollTable[y][x] == 1:
                    ax = float(x) / self._mazeWidth * MAP_RESOLUTION
                    invertedY = self._mazeHeight - 1 - y
                    ay = float(invertedY) / self._mazeHeight * MAP_RESOLUTION
                    self._drawSquare(mapImage, int(ax), int(ay), 10, fgColor)

        mapTexture = Texture('mapTexture')
        mapTexture.setupTexture(Texture.TT2dTexture, self._maskResolution, self._maskResolution, 1, Texture.TUnsignedByte, Texture.FRgba)
        mapTexture.setMinfilter(Texture.FTLinear)
        mapTexture.load(mapImage)
        mapTexture.setWrapU(Texture.WMClamp)
        mapTexture.setWrapV(Texture.WMClamp)
        mapImage.clear()
        del mapImage
        cm = CardMaker('map_cardMaker')
        cm.setFrame(-1.0, 1.0, -1.0, 1.0)
        map = self.attachNewNode(cm.generate())
        map.setTexture(mapTexture, 1)
        return map

    def _createMaskTextureCard(self):
        self._maskImage = PNMImage(self._maskResolution, self._maskResolution, 4)
        for x in range(self._maskResolution):
            for y in range(self._maskResolution):
                self._maskImage.setXelA(x, y, 0, 0, 0, 1)

        self.maskTexture = Texture('maskTexture')
        self.maskTexture.setupTexture(Texture.TT2dTexture, self._maskResolution, self._maskResolution, 1, Texture.TUnsignedByte, Texture.FRgba)
        self.maskTexture.setMinfilter(Texture.FTLinear)
        self.maskTexture.setWrapU(Texture.WMClamp)
        self.maskTexture.setWrapV(Texture.WMClamp)
        self.maskTexture.load(self._maskImage)
        base.graphicsEngine.renderFrame()
        cm = CardMaker('mask_cardMaker')
        cm.setFrame(-1.1, 1.1, -1.1, 1.1)
        mask = self.attachNewNode(cm.generate())
        mask.setTexture(self.maskTexture, 1)
        mask.setTransparency(1)
        return mask

    def _drawSquare(self, image, ulx, uly, size, color):
        x = int(ulx)
        while x <= ulx + size:
            y = int(uly)
            while y <= uly + size:
                if x > 0 and y > 0 and x < image.getXSize() and y < image.getYSize():
                    image.setXelA(x, y, color)
                y += 1

            x += 1

    def destroy(self):
        del self._mazeCollTable
        del self._maskResolution
        del self._radius
        del self._revealedCells
        del self._revealFunctions
        del self._revealFunction
        self.map.removeNode()
        del self.map
        self.mask.removeNode()
        del self.mask
        self.maskedLayer.removeNode()
        del self.maskedLayer
        self.visibleLayer.removeNode()
        del self.visibleLayer
        self._maskImage.clear()
        del self._maskImage
        self.maskTexture.clear()
        del self.maskTexture
        self._laffMeterModel.removeNode()
        del self._laffMeterModel
        DirectFrame.destroy(self)

    def _revealSmoothCircle(self, x, y, center):
        length = (Vec2(x, y) - center).length()
        goalAlpha = max(0.0, length / float(self._radius) - 0.5)
        self._maskImage.setXelA(x, y, VBase4F(0.0, 0.0, 0.0, min(self._maskImage.getAlpha(x, y), goalAlpha * 2.0)))

    def _revealHardCircle(self, x, y, center):
        length = (Vec2(x, y) - center).length()
        if length <= self._radius:
            self._maskImage.setXelA(x, y, VBase4F(0, 0, 0, 0))

    def _revealSquare(self, x, y, center):
        self._maskImage.setXelA(x, y, VBase4F(0, 0, 0, 0))

    def _drawHole(self, x, y):
        center = Vec2(x, y)
        ul = center - Vec2(self._radius, self._radius)
        lr = center + Vec2(self._radius, self._radius)
        x = int(ul[0])
        while x <= lr[0]:
            y = int(ul[1])
            while y <= lr[1]:
                if x > 0 and y > 0 and x < self._maskResolution and y < self._maskResolution:
                    self._revealFunctions[self._revealFunction](x, y, center)
                y += 1

            x += 1

        self.maskTexture.load(self._maskImage)
        self.mask.setTexture(self.maskTexture, 1)

    def _createSimpleMarker(self, size, color = (1, 1, 1)):
        halfSize = size * 0.5
        cm = CardMaker('mazemap_simple_marker')
        cm.setFrame(-halfSize, halfSize, -halfSize, halfSize)
        markerNP = self.maskedLayer.attachNewNode(cm.generate())
        markerNP.setColor(*color)
        return markerNP

    def tile2gui(self, x, y):
        y = self._mazeHeight - y
        cellWidth = self._maskResolution / self._mazeWidth
        cellHeight = self._maskResolution / self._mazeHeight
        ax = float(x) / self._mazeWidth * self._maskResolution
        ax += cellWidth
        ay = float(y) / self._mazeHeight * self._maskResolution
        ay += cellHeight
        return (ax, ay)

    def gui2pos(self, x, y):
        return (x / self._maskResolution * 2.0 - 0.97, 0, y / self._maskResolution * -2.0 + 1.02)

    def _getToonMarker(self, toon):
        hType = toon.style.getType()
        if hType == 'rabbit':
            hType = 'bunny'
        return self._laffMeterModel.find('**/' + hType + 'head')

    def addToon(self, toon, tX, tY):
        marker = NodePath('toon_marker-%i' % toon.doId)
        marker.reparentTo(self)
        self._getToonMarker(toon).copyTo(marker)
        marker.setColor(toon.style.getHeadColor())
        if toon.isLocal():
            marker.setScale(0.07)
        else:
            marker.setScale(0.05)
        marker.flattenStrong()
        marker.setPos(*self.gui2pos(*self.tile2gui(tX, tY)))
        self._toon2marker[toon] = marker

    def removeToon(self, toon):
        if not self._toon2marker.has_key(toon):
            return
        self._toon2marker[toon].removeNode()
        del self._toon2marker[toon]

    def updateToon(self, toon, tX, tY):
        if not self._toon2marker.has_key(toon):
            return
        x, y = self.tile2gui(tX, tY)
        self._toon2marker[toon].setPos(*self.gui2pos(x, y))
        if tY < 0 or tY >= len(self._revealedCells):
            self.notify.warning('updateToon earlying out:')
            self.notify.warning('(tX, tY): (%s, %s)' % (tX, tY))
            self.notify.warning('len(_revealedCells): %s' % (len(self._revealedCells),))
            if len(self._revealedCells) > 0:
                self.notify.warning('len(_revealedCells[0]): %s' % (len(self._revealedCells[0]),))
            return
        if tX < 0 or tX >= len(self._revealedCells[tY]):
            self.notify.warning('updateToon earlying out:')
            self.notify.warning('(tX, tY): (%s, %s)' % (tX, tY))
            self.notify.warning('len(_revealedCells): %s' % (len(self._revealedCells),))
            if tY < len(self._revealedCells):
                self.notify.warning('len(_revealedCells[tY]): %s' % (len(self._revealedCells[tY]),))
            elif len(self._revealedCells) > 0:
                self.notify.warning('len(_revealedCells[0]): %s' % (len(self._revealedCells[0]),))
            return
        if not self._revealedCells[tY][tX]:
            self._drawHole(x, y)
            self._revealedCells[tY][tX] = True

    def revealCell(self, x, y):
        ax, ay = self.tile2gui(x, y)
        if not self._revealedCells[y][x]:
            self._drawHole(ax, ay)
            self._revealedCells[y][x] = True

    def revealAll(self):
        for x in range(self._maskResolution):
            for y in range(self._maskResolution):
                self._maskImage.setXelA(x, y, 0, 0, 0, 0)

        self.revealCell(0, 0)

    def reset(self):
        for x in range(self._maskResolution):
            for y in range(self._maskResolution):
                self._maskImage.setXelA(x, y, 0, 0, 0, 1)
