instantiation

[pmachines.git] / pmachines / scene.py

from panda3d.core import AmbientLight, DirectionalLight, Point3
from panda3d.bullet import BulletPlaneShape, BulletGhostNode
from direct.gui.OnscreenImage import OnscreenImage
from direct.gui.DirectGui import DirectButton
from direct.gui.DirectGuiGlobals import FLAT, DISABLED, NORMAL
from direct.showbase.DirectObject import DirectObject
from pmachines.items.background import Background
from pmachines.items.box import Box
from lib.engine.gui.cursor import MouseCursor


class Scene(DirectObject):

    def __init__(self, world):
        super().__init__()
        self._world = world
        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()
        Background()
        self.items = [Box(world, self._mouse_plane_node, 3, self.cb_inst)]
        taskMgr.add(self.on_frame, 'on_frame')

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

    def _set_gui(self):
        def load_img_btn(path, col):
            img = OnscreenImage('assets/buttons/%s.png' % path)
            img.set_transparency(True)
            img.set_color(col)
            img.detach_node()
            return img
        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 [load_img_btn(path, col) for col in colors]
        abl, abr = base.a2dBottomLeft, base.a2dBottomRight
        btn_info = [
            ('home', self.on_home, DISABLED, abl, 'gray'),
            ('information', self.on_information, DISABLED, 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.on_rewind, DISABLED, abr, 'gray')]
        num_l = num_r = 0
        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)

    def _set_directional_light(self, name, hpr, color):
        light = DirectionalLight(name)
        light_np = render.attach_new_node(light)
        light_np.set_hpr(*hpr)
        light.set_color(color)
        render.set_light(light_np)

    def _set_lights(self):
        alight = AmbientLight('alight')  # for ao
        alight.set_color((.4, .4, .4, 1))
        alnp = render.attach_new_node(alight)
        render.set_light(alnp)
        self._set_directional_light('key light', (315, -60, 0),
                                    (3.6, 3.6, 3.6, 1))
        self._set_directional_light('fill light', (195, -30, 0),
                                    (.4, .4, .4, 1))
        self._set_directional_light('rim light', (75, -30, 0), (.3, .3, .3, 1))

    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 _set_mouse_plane(self):
        shape = BulletPlaneShape((0, -1, 0), 1)
        #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.attachGhost(self._mouse_plane_node)

    def _get_hits(self):
        if not base.mouseWatcherNode.has_mouse(): return []
        p_from, p_to = Point3(), Point3()    # in camera coordinates
        base.camLens.extrude(base.mouseWatcherNode.get_mouse(), p_from, p_to)
        p_from = render.get_relative_point(base.cam, p_from)  # global coords
        p_to = render.get_relative_point(base.cam, p_to)  # global coords
        return self._world.ray_test_all(p_from, p_to).get_hits()

    def _on_click(self, method):
        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]:
                getattr(item, method)(pos)
                img = 'move' if method == 'on_click_l' else 'rotate'
                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):
        [item.on_release() for item in self.items]
        self._cursor.set_image('assets/buttons/arrowUpLeft.png')

    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]
        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:
            [itm.on_mouse_move(pos) for itm in self.items]
        return task.cont

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

    def on_play(self):
        [itm.play() for itm in self.items]

    def on_next(self):
        print('on_next')

    def on_prev(self):
        print('on_prev')

    def on_rewind(self):
        print('on_rewind')

    def on_home(self):
        print('on_home')

    def on_information(self):
        print('on_information')