def loadSeaPatchFileExt(self, filename, patch=None):
        if patch == None:
            patch = SeaPatchRoot()
            patch.assignEnvironmentFrom(self.patch)

        patch.resetProperties()
        if not isinstance(filename, Filename):
            filename = Filename.fromOsSpecific(filename)

        searchPath = DSearchPath()
        if AppRunnerGlobal.appRunner:
            searchPath.appendDirectory(
                Filename.expandFrom('$POTCO_2_ROOT/etc'))
        else:
            searchPath.appendDirectory(
                Filename.fromOsSpecific(
                    os.path.expandvars('$PIRATES/src/seapatch')))
            searchPath.appendDirectory(
                Filename.fromOsSpecific(
                    os.path.expandvars('pirates/src/seapatch')))
            searchPath.appendDirectory(Filename('etc'))
            searchPath.appendDirectory(Filename('.'))
        found = vfs.resolveFilename(filename, searchPath)
        if not found:
            print 'seapatch file not found: %s' % filename
        else:
            data = vfs.readFile(filename, 1)
            data = data.replace('\r', '')
            exec data
        return patch
    def __init__(self, parentNP=render, reflection=None, todMgr=None):
        Water.__init__(self, 'Sea')
        if base.win.getFbProperties().getStencilBits() == 0:
            self.use_water_bin = False

        self.p3 = Point3()
        self.parentNP = parentNP
        self.followWater = base.config.GetBool('ships-follow-water', 1)
        self.damper = 0.20000000000000001 * 180.0 / math.pi
        self.floats = {}
        self.floatmasses = {}
        self.patch = SeaPatchRoot()
        self.patch.setSeaLevel(0)
        self.hidden = False
        self.usingFlatWater = False
        if base.camera:
            self.setCenter(base.camera)
            self.setAnchor(render)

        patchNode = SeaPatchNode('seapatch', self.patch)
        patchNode.setWantReflect(0)
        self.patchNP = NodePath(patchNode)
        self.patchNP.setColorScale(0.14999999999999999, 0.40000000000000002,
                                   0.5, 1.0)
        self.patchNP.setTwoSided(True)
        self.patchNP.hide()
        shader_file_path = None
        if base.config.GetBool(
                'want-shaders',
                1) and base.win and base.win.getGsg() and base.win.getGsg(
                ).getShaderModel() >= GraphicsStateGuardian.SM20:
            patchNode.setWantColor(0)
            shader_directory = 'models/sea/'
            shader_file_name_array = [
                '', 'water008_11.cg', 'water008_20.cg', 'water008_2X.cg'
            ]
            shader_model = base.win.getGsg().getShaderModel()
            maximum_shader_model = len(shader_file_name_array) - 1
            if shader_model > maximum_shader_model:
                shader_model = maximum_shader_model

            file_name = shader_file_name_array[shader_model]
            shader_file_path = shader_directory + file_name
            self.shader = loader.loadShader(shader_file_path)
            if self.shader:
                pass

        if self.shader:
            if base.win.getGsg().getShaderModel(
            ) == GraphicsStateGuardian.SM20:
                self.seamodel = loader.loadModel('models/sea/SeaPatch34')
            else:
                self.seamodel = loader.loadModel('models/sea/SeaPatch31')
        elif base.options.getTerrainDetailSetting() == 0:
            self.seamodel = loader.loadModel(
                'models/sea/pir_m_are_wld_seaPatch_low')
        else:
            self.seamodel = loader.loadModel('models/sea/SeaPatch31')
        self.waterFloor = self.seamodel.find('**/water_floor')
        if self.waterFloor and not self.waterFloor.isEmpty():
            self.waterFloor.node().setIntoCollideMask(BitMask32.allOff())
            self.waterFloor.wrtReparentTo(self.patchNP)
        else:
            self.waterFloor = None
        self.seamodel.setScale(2, 1, 1)
        self.seamodel.flattenMedium()
        mask = 0xFFFFFFFFL
        if self.use_water_bin:
            self.seamodel.setBin('water', 0)
            stencil = StencilAttrib.makeWithClear(1, StencilAttrib.SCFAlways,
                                                  StencilAttrib.SOKeep,
                                                  StencilAttrib.SOKeep,
                                                  StencilAttrib.SOReplace, 1,
                                                  mask, mask, 1, 0)
            self.seamodel.setAttrib(stencil)
        else:
            self.seamodel.setBin('background', 200)
        self.seamodel.hide(OTPRender.MainCameraBitmask)
        self.seamodel.showThrough(OTPRender.EnviroCameraBitmask)
        self.reflectStage = None
        if False:
            self.model = loader.loadModel('models/misc/smiley')
            self.model.reparentTo(render)
            self.model.setPos(0.0, 50.0, 10.0)
            self.model.setHpr(0.0, 180.0, 0.0)
            self.model.setBin('water', 100)
            self.model2 = loader.loadModel('models/misc/smiley')
            self.model2.reparentTo(render)
            self.model2.setPos(10.0, 50.0, 15.0)
            self.model2.setHpr(180.0, 0.0, 0.0)
            self.model2.setBin('water', 50)
            self.model3 = loader.loadModel('models/misc/smiley')
            self.model3.reparentTo(render)
            self.model3.setPos(-10.0, 50.0, 15.0)
            self.model3.setHpr(0.0, 0.0, 0.0)
            self.model3.setBin('water', 50)
            stencil = StencilAttrib.make(1, StencilAttrib.SCFEqual,
                                         StencilAttrib.SOKeep,
                                         StencilAttrib.SOKeep,
                                         StencilAttrib.SOKeep, 1, mask, mask)
            self.model.setAttrib(stencil)
            stencil = StencilAttrib.make(1, StencilAttrib.SCFEqual,
                                         StencilAttrib.SOKeep,
                                         StencilAttrib.SOKeep,
                                         StencilAttrib.SOKeep, 0, mask, mask)
            self.model3.setAttrib(stencil)

        self.flatSea = self.seamodel.find('**/flatsea')
        flat2 = self.flatSea.copyTo(self.flatSea)
        flat2.setScale(2, 2, 1)
        flat2.setZ(-4)
        flat4 = self.flatSea.copyTo(self.flatSea)
        flat4.setScale(4, 4, 1)
        flat4.setZ(-8)
        if not self.flatSea.isEmpty():
            self.flatSea.setTag('flat_sea', 'true')
            self.flatSea.setPos(0, 0, -1)
            if False:
                self.flatSea.setScale(1.3)

            if self.use_water_bin:
                self.flatSea.setDepthWrite(0)

        self.flatSea.flattenStrong()
        if self.use_water_bin:
            self.patchNP.setBin('water', 10)
        else:
            self.patchNP.setBin('ground', -10)
        self.todMgr = todMgr
        if self.getTodMgr():
            self.patchNP.setLightOff()
            self.patchNP.setLight(self.getTodMgr().alight)

        (seaMin, seaMax) = self.seamodel.getTightBounds()
        seaDelta = seaMax - seaMin
        cp = CollisionPolygon(Point3(-1.0, -1.0, 0), Point3(1.0, -1.0, 0),
                              Point3(1.0, 1.0, 0), Point3(-1.0, 1.0, 0))
        cNode = CollisionNode('seaCollision')
        cNode.setCollideMask(PiratesGlobals.TargetBitmask)
        cNode.addSolid(cp)
        cNodePath = NodePath(cNode)
        cNodePath.reparentTo(self.seamodel)
        cNodePath.setScale(Vec3(seaDelta).length())
        cNodePath.setZ(-3)
        cNodePath.setTag('objType', str(PiratesGlobals.COLL_SEA))
        cNodePath.reparentTo(self.parentNP)
        self.cNodePath = cNodePath
        ccPlane = CollisionPlane(Plane(Vec3(0, 0, 1), Point3(0, 0, 0)))
        ccNode = CollisionNode('seaCamCollision')
        ccNode.setCollideMask(PiratesGlobals.CameraBitmask)
        ccNode.addSolid(ccPlane)
        ccNodePath = NodePath(ccNode)
        ccNodePath.reparentTo(self.seamodel)
        self.ccNodePath = ccNodePath
        self.seamodel.reparentTo(self.patchNP)
        self.patchNP.flattenLight()
        patchNode.collectGeometry()
        self.enabled = False
        self.enable()
        if self.use_alpha_map:
            if self.enable_alpha_map:
                self.patchNP.setTransparency(1)
                alpha_test_attrib = AlphaTestAttrib.make(
                    RenderAttrib.MAlways, 0)
                self.patchNP.setAttrib(alpha_test_attrib, 100)

        if self.water_panel != None:
            self.water_panel.setSeaPatch(self)

        if self.enable_parameter_keys:

            def showSeaPatchPanel():
                SeaPatchPanel = SeaPatchPanel
                import pirates.seapatch
                self.spp = SeaPatchPanel.SeaPatchPanel()
                self.spp.setPatch(self)

            self.accept('shift-5', showSeaPatchPanel)

        self.setting_0()
        self.patchNP.setTransparency(0)
        buffer_width = 512
        buffer_height = 512
        self.texture_extension = '.jpg'
        if self.shader:
            self.seamodel.setShader(self.shader)
            self.seamodel.setFogOff()
            if self.use_alpha_map:
                self.patchNP.setTransparency(1)

            self.base_texture = loader.loadTexture('maps/oceanWater2' +
                                                   self.texture_extension)
            self.texture_d = self.base_texture.loadRelated(
                InternalName.make('-d'))
            self.texture_n = self.base_texture.loadRelated(
                InternalName.make('-n'))
            self.texture_bb = self.base_texture.loadRelated(
                InternalName.make('-bb'))
            self.setting_0()
            self.water_r = 77
            self.water_g = 128
            self.water_b = 179
            self.water_a = 255
            self.set_water_color()
            default_water_color_texture_filename = 'maps/ocean_color_1' + self.texture_extension
            default_water_alpha_texture_filename = 'maps/default_inv_alpha' + self.texture_extension
            self.set_water_color_texture(default_water_color_texture_filename)
            self.set_water_alpha_texture(default_water_alpha_texture_filename)
            if self.enable_water_panel:
                self.water_panel.set_texture(
                    default_water_color_texture_filename)
                self.water_panel.set_shader(shader_file_path)

        if True:
            if reflection:
                self.reflection = reflection
            else:
                self.reflection = Reflection(
                    'seapatch', buffer_width, buffer_height, render,
                    Plane(Vec3(0, 0, 1), Point3(0, 0, 0)))
            if self.reflection_enabled():
                self.reflection_on()
            else:
                self.reflection_off()
            self.reflection.reflectShowThroughOnly(
                self.reflect_show_through_only)
            self.seamodel.setShaderInput(self.reflectiontexture_name,
                                         self.reflection.reflection_texture)
            OTPRender.renderReflection(False, self.patchNP, 'p_ocean_water',
                                       None)
        else:
            self.reflection_factor = 0.0
            self.set_reflection_parameters_np()
        if not self.shader:
            self.accept('timeOfDayChange', self._timeChange)
            if self.reflection:
                self.reflection.createCard('water', 6)

            self.setting_0()
            self.reflection_factor = 0.20000000000000001
            self.set_reflection_parameters_np()
            if False:
                default_water_color_texture_filename = 'maps/ocean_color_1' + self.texture_extension
                self.set_water_color_texture(
                    default_water_color_texture_filename)
                self.setup_color_map()

        self.create_interface()
        self.patchNP.reparentTo(self.parentNP)
        self.accept('grid-detail-changed', self.updateWater)