end frame

[pmachines.git] / pmachines / scene.py

from os.path import exists
from glob import glob
from importlib import import_module
from inspect import isclass
from panda3d.core import AmbientLight, DirectionalLight, Point3, Texture, \
    TextPropertiesManager, TextNode, Spotlight, PerspectiveLens, BitMask32
from panda3d.bullet import BulletPlaneShape, BulletGhostNode
from direct.gui.OnscreenImage import OnscreenImage
from direct.gui.OnscreenText import OnscreenText
from direct.gui.DirectGui import DirectButton, DirectFrame
from direct.gui.DirectGuiGlobals import FLAT, DISABLED, NORMAL
from direct.showbase.DirectObject import DirectObject
from pmachines.items.background import Background
from pmachines.sidepanel import SidePanel
from lib.engine.gui.cursor import MouseCursor
from lib.lib.p3d.gfx import P3dGfxMgr


class Scene(DirectObject):

    def __init__(self, world, exit_cb, auto_close_instr, dbg_items, reload_cb):
        super().__init__()
        self._world = world
        self._exit_cb = exit_cb
        self._dbg_items = dbg_items
        self._reload_cb = reload_cb
        self._set_camera()
        self._cursor = MouseCursor(
            'assets/buttons/arrowUpLeft.png', (.04, 1, .04), (.5, .5, .5, 1),
            (.01, .01))
        self._set_gui()
        self._set_lights()
        self._set_input()
        self._set_mouse_plane()
        self.items = []
        self.reset()
        self._paused = False
        self._item_active = None
        if auto_close_instr:
            self.__store_state()
            self.__restore_state()
        else:
            self._set_instructions()
        self._bg = Background()
        self._side_panel = SidePanel(world, self._mouse_plane_node, (-5, 4), (-3, 1), 1, self.items)
        self._scene_tsk = taskMgr.add(self.on_frame, 'on_frame')

    @staticmethod
    def name():
        return ''

    def _instr_txt(self):
        return ''

    def _set_items(self):
        self.items = []

    def screenshot(self, task=None):
        tex = Texture('screenshot')
        buffer = base.win.make_texture_buffer('screenshot', 512, 512, tex, True )
        cam = base.make_camera(buffer)
        cam.reparent_to(render)
        cam.node().get_lens().set_fov(base.camLens.get_fov())
        cam.set_pos(0, -20, 0)
        cam.look_at(0, 0, 0)
        import simplepbr
        simplepbr.init(
            window=buffer,
            camera_node=cam,
            use_normal_maps=True,
            use_emission_maps=False,
            use_occlusion_maps=True,
            msaa_samples=4,
            enable_shadows=True)
        base.graphicsEngine.renderFrame()
        base.graphicsEngine.renderFrame()
        fname = self.__class__.__name__
        buffer.save_screenshot('assets/images/scenes/%s.png' % fname)
        # img = DirectButton(
        #     frameTexture=buffer.get_texture(), relief=FLAT,
        #     frameSize=(-.2, .2, -.2, .2))
        return buffer.get_texture()

    def current_bottom(self):
        curr_bottom = 1
        for item in self.items:
            if item.repos_done:
                curr_bottom = min(curr_bottom, item.get_bottom())
        return curr_bottom

    def reset(self):
        [itm.destroy() for itm in self.items]
        self._set_items()
        self._commands = []
        self._command_idx = 0
        if hasattr(self, '_success_txt'):
            self._success_txt.destroy()
            del self._success_txt
        self.__right_btn['state'] = NORMAL

    def destroy(self):
        self._unset_gui()
        self._unset_lights()
        self._unset_input()
        self._unset_mouse_plane()
        [itm.destroy() for itm in self.items]
        self._bg.destroy()
        self._side_panel.destroy()
        self._cursor.destroy()
        taskMgr.remove(self._scene_tsk)
        if hasattr(self, '_success_txt'):
            self._success_txt.destroy()

    def _set_camera(self):
        base.camera.set_pos(0, -20, 0)
        base.camera.look_at(0, 0, 0)

    def __load_img_btn(self, path, col):
        img = OnscreenImage('assets/buttons/%s.png' % path)
        img.set_transparency(True)
        img.set_color(col)
        img.detach_node()
        return img

    def _set_gui(self):
        def load_images_btn(path, col):
            colors = {
                'gray': [
                    (.6, .6, .6, 1),  # ready
                    (1, 1, 1, 1), # press
                    (.8, .8, .8, 1), # rollover
                    (.4, .4, .4, .4)],
                'green': [
                    (.1, .68, .1, 1),
                    (.1, 1, .1, 1),
                    (.1, .84, .1, 1),
                    (.4, .1, .1, .4)]}[col]
            return [self.__load_img_btn(path, col) for col in colors]
        abl, abr = base.a2dBottomLeft, base.a2dBottomRight
        btn_info = [
            ('home', self.on_home, NORMAL, abl, 'gray'),
            ('information', self._set_instructions, NORMAL, abl, 'gray'),
            ('right', self.on_play, NORMAL, abr, 'green'),
            ('next', self.on_next, DISABLED, abr, 'gray'),
            ('previous', self.on_prev, DISABLED, abr, 'gray'),
            ('rewind', self.reset, NORMAL, abr, 'gray')]
        num_l = num_r = 0
        btns = []
        for binfo in btn_info:
            imgs = load_images_btn(binfo[0], binfo[4])
            if binfo[3] == base.a2dBottomLeft:
                sign, num = 1, num_l
                num_l += 1
            else:
                sign, num = -1, num_r
                num_r += 1
            fcols = (.4, .4, .4, .14), (.3, .3, .3, .05)
            btn = DirectButton(
                image=imgs, scale=.05, pos=(sign * (.06 + .11 * num), 1, .06),
                parent=binfo[3], command=binfo[1], state=binfo[2], relief=FLAT,
                frameColor=fcols[0] if binfo[2] == NORMAL else fcols[1],
                rolloverSound=loader.load_sfx('assets/audio/sfx/rollover.ogg'),
                clickSound=loader.load_sfx('assets/audio/sfx/click.ogg'))
            btn.set_transparency(True)
            btns += [btn]
        self.__home_btn, self.__info_btn, self.__right_btn, self.__next_btn, \
            self.__prev_btn, self.__rewind_btn = btns
        if self._dbg_items:
            self._info_txt = OnscreenText(
                '', parent=base.a2dTopRight, scale=0.04,
                pos=(-.03, -.06), fg=(.9, .9, .9, 1), align=TextNode.A_right)

    def _unset_gui(self):
        btns = [
            self.__home_btn, self.__info_btn, self.__right_btn,
            self.__next_btn, self.__prev_btn, self.__rewind_btn]
        [btn.destroy() for btn in btns]
        if self._dbg_items:
            self._info_txt.destroy()

    def _set_spotlight(self, name, pos, look_at, color, shadows=False):
        light = Spotlight(name)
        if shadows:
            light.setLens(PerspectiveLens())
        light_np = render.attach_new_node(light)
        light_np.set_pos(pos)
        light_np.look_at(look_at)
        light.set_color(color)
        render.set_light(light_np)
        return light_np

    def _set_lights(self):
        alight = AmbientLight('alight')  # for ao
        alight.set_color((.15, .15, .15, 1))
        self._alnp = render.attach_new_node(alight)
        render.set_light(self._alnp)
        self._key_light = self._set_spotlight(
            'key light', (-5, -80, 5), (0, 0, 0), (2.8, 2.8, 2.8, 1))
        self._shadow_light = self._set_spotlight(
            'key light', (-5, -80, 5), (0, 0, 0), (.58, .58, .58, 1), True)
        self._shadow_light.node().set_shadow_caster(True, 2048, 2048)
        self._shadow_light.node().get_lens().set_film_size(2048, 2048)
        self._shadow_light.node().get_lens().set_near_far(1, 256)
        self._shadow_light.node().set_camera_mask(BitMask32(0x01))

    def _unset_lights(self):
        for light in [self._alnp, self._key_light, self._shadow_light]:
            render.clear_light(light)
            light.remove_node()

    def _set_input(self):
        self.accept('mouse1', self.on_click_l)
        self.accept('mouse1-up', self.on_release)
        self.accept('mouse3', self.on_click_r)
        self.accept('mouse3-up', self.on_release)

    def _unset_input(self):
        for evt in ['mouse1', 'mouse1-up', 'mouse3', 'mouse3-up']:
            self.ignore(evt)

    def _set_mouse_plane(self):
        shape = BulletPlaneShape((0, -1, 0), 0)
        #self._mouse_plane_node = BulletRigidBodyNode('mouse plane')
        self._mouse_plane_node = BulletGhostNode('mouse plane')
        self._mouse_plane_node.addShape(shape)
        #np = render.attachNewNode(self._mouse_plane_node)
        #self._world.attachRigidBody(self._mouse_plane_node)
        self._world.attach_ghost(self._mouse_plane_node)

    def _unset_mouse_plane(self):
        self._world.remove_ghost(self._mouse_plane_node)

    def _get_hits(self):
        if not base.mouseWatcherNode.has_mouse(): return []
        p_from, p_to = P3dGfxMgr.world_from_to(base.mouseWatcherNode.get_mouse())
        return self._world.ray_test_all(p_from, p_to).get_hits()

    def _update_info(self, item):
        txt = ''
        if item:
            txt = '%.3f %.3f\n%.3f°' % (
                item._np.get_x(), item._np.get_z(), item._np.get_r())
        self._info_txt['text'] = txt

    def _on_click(self, method):
        if self._paused:
            return
        for hit in self._get_hits():
            if hit.get_node() == self._mouse_plane_node:
                pos = hit.get_hit_pos()
        for hit in self._get_hits():
            for item in [i for i in self.items if hit.get_node() == i.node and i.interactable]:
                if not self._item_active:
                    self._item_active = item
                getattr(item, method)(pos)
                img = 'move' if method == 'on_click_l' else 'rotate'
                if not (img == 'rotate' and not item._instantiated):
                    self._cursor.set_image('assets/buttons/%s.png' % img)

    def on_click_l(self):
        self._on_click('on_click_l')

    def on_click_r(self):
        self._on_click('on_click_r')

    def on_release(self):
        if self._item_active and not self._item_active._first_command:
            self._commands = self._commands[:self._command_idx]
            self._commands += [self._item_active]
            self._command_idx += 1
            self.__prev_btn['state'] = NORMAL
            fcols = (.4, .4, .4, .14), (.3, .3, .3, .05)
            self.__prev_btn['frameColor'] = fcols[0]
            if self._item_active._command_idx == len(self._item_active._commands) - 1:
                self.__next_btn['state'] = DISABLED
                self.__next_btn['frameColor'] = fcols[1]
        self._item_active = None
        [item.on_release() for item in self.items]
        self._cursor.set_image('assets/buttons/arrowUpLeft.png')

    def repos(self):
        for item in self.items:
            item.repos_done = False
        self.items = sorted(self.items, key=lambda itm: itm.__class__.__name__)
        [item.on_aspect_ratio_changed() for item in self.items]
        self._side_panel.update(self.items)
        max_x = -float('inf')
        for item in self.items:
            if not item._instantiated:
                max_x = max(item._np.get_x(), max_x)
        for item in self.items:
            if not item._instantiated:
                item.repos_x(max_x)

    def on_aspect_ratio_changed(self):
        self.repos()

    def on_frame(self, task):
        hits = self._get_hits()
        pos = None
        for hit in self._get_hits():
            if hit.get_node() == self._mouse_plane_node:
                pos = hit.get_hit_pos()
        hit_nodes = [hit.get_node() for hit in hits]
        if self._item_active:
            items_hit = [self._item_active]
        else:
            items_hit = [itm for itm in self.items if itm.node in hit_nodes]
        items_no_hit = [itm for itm in self.items if itm not in items_hit]
        [itm.on_mouse_on() for itm in items_hit]
        [itm.on_mouse_off() for itm in items_no_hit]
        if pos and self._item_active:
            self._item_active.on_mouse_move(pos)
        if self._dbg_items:
            self._update_info(items_hit[0] if items_hit else None)
        if all(itm.end_condition() for itm in self.items) and not self._paused:
            self._set_end()
        return task.cont

    def cb_inst(self, item):
        self.items += [item]

    def on_play(self):
        self.__prev_btn['state'] = DISABLED
        self.__next_btn['state'] = DISABLED
        self.__right_btn['state'] = DISABLED
        [itm.play() for itm in self.items]

    def on_next(self):
        self._commands[self._command_idx].redo()
        self._command_idx += 1
        fcols = (.4, .4, .4, .14), (.3, .3, .3, .05)
        self.__prev_btn['state'] = NORMAL
        self.__prev_btn['frameColor'] = fcols[0]
        more_commands = self._command_idx < len(self._commands)
        self.__next_btn['state'] = NORMAL if more_commands else DISABLED
        self.__next_btn['frameColor'] = fcols[0] if more_commands else fcols[1]

    def on_prev(self):
        self._command_idx -= 1
        self._commands[self._command_idx].undo()
        fcols = (.4, .4, .4, .14), (.3, .3, .3, .05)
        self.__next_btn['state'] = NORMAL
        self.__next_btn['frameColor'] = fcols[0]
        self.__prev_btn['state'] = NORMAL if self._command_idx else DISABLED
        self.__prev_btn['frameColor'] = fcols[0] if self._command_idx else fcols[1]

    def on_home(self):
        self._exit_cb()

    def _set_instructions(self):
        self._paused = True
        self.__store_state()
        mgr = TextPropertiesManager.get_global_ptr()
        for name in ['mouse_l', 'mouse_r']:
            graphic = OnscreenImage('assets/buttons/%s.png' % name)
            graphic.set_scale(.5)
            graphic.get_texture().set_minfilter(Texture.FTLinearMipmapLinear)
            graphic.get_texture().set_anisotropic_degree(2)
            mgr.set_graphic(name, graphic)
            graphic.set_z(-.2)
            graphic.set_transparency(True)
            graphic.detach_node()
        frm = DirectFrame(frameColor=(.4, .4, .4, .06),
                          frameSize=(-.6, .6, -.3, .3))
        font = base.loader.load_font('assets/fonts/Hanken-Book.ttf')
        font.clear()
        font.set_pixels_per_unit(60)
        font.set_minfilter(Texture.FTLinearMipmapLinear)
        font.set_outline((0, 0, 0, 1), .8, .2)
        self._txt = OnscreenText(
            self._instr_txt(), parent=frm, font=font, scale=0.06,
            fg=(.9, .9, .9, 1), align=TextNode.A_left)
        u_l = self._txt.textNode.get_upper_left_3d()
        l_r = self._txt.textNode.get_lower_right_3d()
        w, h = l_r[0] - u_l[0], u_l[2] - l_r[2]
        btn_scale = .05
        mar = .06  # margin
        z = h / 2 - font.get_line_height() * self._txt['scale'][1]
        z += (btn_scale + 2 * mar) / 2
        self._txt['pos'] = -w / 2, z
        u_l = self._txt.textNode.get_upper_left_3d()
        l_r = self._txt.textNode.get_lower_right_3d()
        c_l_r = l_r[0], l_r[1], l_r[2] - 2 * mar - btn_scale
        fsz = u_l[0] - mar, l_r[0] + mar, c_l_r[2] - mar, u_l[2] + mar
        frm['frameSize'] = fsz
        colors = [
            (.6, .6, .6, 1),  # ready
            (1, 1, 1, 1), # press
            (.8, .8, .8, 1), # rollover
            (.4, .4, .4, .4)]
        imgs = [self.__load_img_btn('exitRight', col) for col in colors]
        btn = DirectButton(
            image=imgs, scale=btn_scale,
            pos=(l_r[0] - btn_scale, 1, l_r[2] - mar - btn_scale),
            parent=frm, command=self.__on_close_instructions, extraArgs=[frm],
            relief=FLAT, frameColor=(.6, .6, .6, .08),
            rolloverSound=loader.load_sfx('assets/audio/sfx/rollover.ogg'),
            clickSound=loader.load_sfx('assets/audio/sfx/click.ogg'))
        btn.set_transparency(True)

    def _set_end(self):
        loader.load_sfx('assets/audio/sfx/success.ogg').play()
        self._paused = True
        self.__store_state()
        frm = DirectFrame(frameColor=(.4, .4, .4, .06),
                          frameSize=(-.6, .6, -.3, .3))
        font = base.loader.load_font('assets/fonts/Hanken-Book.ttf')
        font.clear()
        font.set_pixels_per_unit(60)
        font.set_minfilter(Texture.FTLinearMipmapLinear)
        font.set_outline((0, 0, 0, 1), .8, .2)
        self._txt = OnscreenText(
            _('You win!'),
            parent=frm,
            font=font, scale=0.2,
            fg=(.9, .9, .9, 1))
        u_l = self._txt.textNode.get_upper_left_3d()
        l_r = self._txt.textNode.get_lower_right_3d()
        w, h = l_r[0] - u_l[0], u_l[2] - l_r[2]
        btn_scale = .05
        mar = .06  # margin
        z = h / 2 - font.get_line_height() * self._txt['scale'][1]
        z += (btn_scale + 2 * mar) / 2
        self._txt['pos'] = 0, z
        u_l = self._txt.textNode.get_upper_left_3d()
        l_r = self._txt.textNode.get_lower_right_3d()
        c_l_r = l_r[0], l_r[1], l_r[2] - 2 * mar - btn_scale
        fsz = u_l[0] - mar, l_r[0] + mar, c_l_r[2] - mar, u_l[2] + mar
        frm['frameSize'] = fsz
        colors = [
            (.6, .6, .6, 1),  # ready
            (1, 1, 1, 1), # press
            (.8, .8, .8, 1), # rollover
            (.4, .4, .4, .4)]
        imgs = [self.__load_img_btn('home', col) for col in colors]
        btn = DirectButton(
            image=imgs, scale=btn_scale,
            pos=(-2.8 * btn_scale, 1, l_r[2] - mar - btn_scale),
            parent=frm, command=self._on_end_home, extraArgs=[frm],
            relief=FLAT, frameColor=(.6, .6, .6, .08),
            rolloverSound=loader.load_sfx('assets/audio/sfx/rollover.ogg'),
            clickSound=loader.load_sfx('assets/audio/sfx/click.ogg'))
        btn.set_transparency(True)
        imgs = [self.__load_img_btn('rewind', col) for col in colors]
        btn = DirectButton(
            image=imgs, scale=btn_scale,
            pos=(0, 1, l_r[2] - mar - btn_scale),
            parent=frm, command=self._on_restart, extraArgs=[frm],
            relief=FLAT, frameColor=(.6, .6, .6, .08),
            rolloverSound=loader.load_sfx('assets/audio/sfx/rollover.ogg'),
            clickSound=loader.load_sfx('assets/audio/sfx/click.ogg'))
        btn.set_transparency(True)
        scenes = []
        for _file in glob('pmachines/scenes/*.py'):
            _fn = _file.replace('.py', '').replace('/', '.')
            for member in import_module(_fn).__dict__.values():
                if isclass(member) and issubclass(member, Scene) and \
                        member != Scene:
                    scenes += [member]
        scenes = sorted(scenes, key=lambda elm: elm.sorting)
        enabled = scenes.index(self.__class__) < len(scenes) - 1
        if enabled:
            next_scene = scenes[scenes.index(self.__class__) + 1]
        else:
            next_scene = None
        imgs = [self.__load_img_btn('right', col) for col in colors]
        btn = DirectButton(
            image=imgs, scale=btn_scale,
            pos=(2.8 * btn_scale, 1, l_r[2] - mar - btn_scale),
            parent=frm, command=self._on_next_scene,
            extraArgs=[frm, next_scene], relief=FLAT,
            frameColor=(.6, .6, .6, .08),
            rolloverSound=loader.load_sfx('assets/audio/sfx/rollover.ogg'),
            clickSound=loader.load_sfx('assets/audio/sfx/click.ogg'))
        btn['state'] = NORMAL if enabled else DISABLED
        btn.set_transparency(True)

    def _on_restart(self, frm):
        self.__on_close_instructions(frm)
        self.reset()

    def _on_end_home(self, frm):
        self.__on_close_instructions(frm)
        self.on_home()

    def _on_next_scene(self, frm, scene):
        self.__on_close_instructions(frm)
        self._reload_cb(scene)

    def __store_state(self):
        btns = [
            self.__home_btn, self.__info_btn, self.__right_btn,
            self.__next_btn, self.__prev_btn, self.__rewind_btn]
        self.__btn_state = [btn['state'] for btn in btns]
        for btn in btns:
            btn['state'] = DISABLED
        [itm.store_state() for itm in self.items]

    def __restore_state(self):
        btns = [
            self.__home_btn, self.__info_btn, self.__right_btn,
            self.__next_btn, self.__prev_btn, self.__rewind_btn]
        for btn, state in zip(btns, self.__btn_state):
            btn['state'] = state
        [itm.restore_state() for itm in self.items]
        self._paused = False

    def __on_close_instructions(self, frm):
        frm.remove_node()
        self.__restore_state()