BGE 2.78: How do I add object X to object Y in scene Z?

Game Engine Game Engine Support and Discussion
1

I’m having problems adding an object to another scene (inventory hud scene).

main scene where the game is running = Scene
inventory overlay scene = inventory
object to be added = log (on the second layer of “Scene”)
empty object in scene “inventory” = slot1

In the main character script in “Scene” I have tried the following code:

hud = logic.getSceneList["inventory"]

hud.addObject['log','slot1']

But the code doesn’t work.

This is the complete code on the player:

import bge



cont = bge.logic.getCurrentController()
scene = bge.logic.getCurrentScene()
own = cont.owner
hud = logic.getSceneList["inventory"]


move = cont.actuators['move']       # set motion actuator variable
pressup = cont.sensors['up']        # set Keyboard up variable
pressdown = cont.sensors['down']    # set Keyboard down variable
pressleft = cont.sensors['left']    # set Keyboard left variable
pressright = cont.sensors['right']  # set Keyboard right variable
jump = cont.sensors['jump']         # set Keyboard space variable
speed = move.dLoc[1]                # set motion variable
rotation = move.dRot[2]             # set rotation variable
hitGround = cont.sensors['hitGround']
treeHit = cont.sensors['treeDetect']
logHit = cont.sensors['loghit']
logObj = logHit.hitObject
hitObj = treeHit.hitObject
lmb = cont.sensors['lmb']
use = cont.sensors['use']
forcer = [ 0.0, 200.0, 0.0]
forcel = [ 0.0, -200.0, 0.0]
local = True
player = scene.objects['player']






if pressup.positive:        # Move forward
  speed = 0.2
  move.dLoc = [0.0,speed,0.0]
  cont.activate(move)
    
elif pressdown.positive:    # Move down
  speed = -0.2
  move.dLoc = [0.0,speed,0.0]
  cont.activate(move)
    
else:                       # stop moving
    speed = 0
    move.dLoc = [0.0, speed, 0.0]


if pressleft.positive:      # rotate left
    rotation = +0.05
    move.dRot = [0.0, 0.0 , rotation]
    cont.activate(move)


elif pressright.positive:   # rotate right
    rotation = -0.05
    move.dRot = [0.0, 0.0 , rotation]
    cont.activate(move)
     
else:                       # stop rotating
    rotation = 0
    move.dRot = [0.0, 0.0, rotation]
    
if jump.positive and not own['jumping']:      # jump
    own.applyForce([0,0,2000],True)
    own['jumping'] = True
    
if hitGround.positive:     # jump
    own['jumping'] = False
    


# delete trees if lower then 1 hitcount
    
if lmb.positive and treeHit:
    hitObj['hitcount'] -= 1
    if hitObj['hitcount'] == 0:
        addlog = scene.addObject('log','itemDropper')
        addlog1 = scene.addObject('log','itemDropper')
        addlog2 = scene.addObject('log','itemDropper')
        addlog.worldPosition = treeHit.hitPosition
        addlog1.worldPosition = treeHit.hitPosition
        addlog2.worldPosition = treeHit.hitPosition
        a,b,c = addlog1.localPosition
        addlog1.localPosition = [a,b,c+10]
        d,e,f = addlog2.localPosition
        addlog2.localPosition = [d,e,f+20]
        hitObj.endObject()
        addlog.applyForce(forcer, local)
        addlog1.applyForce(forcel, local)
        addlog2.applyForce(forcer, local)


if use.positive and logHit.positive:
    logObj.endObject()
    player['logamount']+=1
    
# if player['logamount'] > 0:
hud.addObject['log','slot1']


if logHit.positive and player['logpickuptext'] == False:
    player['logpickuptext'] = True
    scene.addObject('pickuplog','player')
    scene.objects['pickuplog'].worldPosition = player.worldPosition


if logHit.positive:
       scene.objects['pickuplog'].worldPosition = player.worldPosition
    
if not logHit.positive == True:
    player['logpickuptext'] = False
    scene.objects['pickuplog'].endObject()

Anyone have an idea how to get this to work?

2

You are using:
scene = bge.logic.getCurrentScene()

so thats the scene your object will be added to.

3

assuming you added the hud scene in game, as far as i know, you cant reference scenes by name. also, your missing “bge.” before logic


import bge

scene = bge.logic.getSceneList()[0]
hud = bge.logic.getSceneList()[1] #scenes are listed in the order they were added


## OR ##
#
#from bge import logic #exclusively import the logic module
#
#scene = logic.getSceneList()[0]
#
4

you can define scenes by name, but you need to check if it exist.


from bge import logic


def get_scene(scene_name):
    
    scenes = logic.getSceneList()      
    scene = None
         
    for sce in scenes:
        if sce.name == scene_name:
            scene = sce
    
    if scene == None:     
        print('
*** No scene found with the name: ' + str(scene_name) + ' ***
')
    else:
        return scene

use this example:

inventory_scene = get_scene('inventory')

Make sure that the object you want to add is on layer 2 of the inventory_scene, not the main scene.
also make sure you grab the object before adding, saves a few headaches, like this:

object_to_add = inventory_scene.objectsInactive['object_to_add']

then you should be able to do:

inventory_scene.addObject('object_to_add', 'spawn_location')
5

well, i was referring to the logic.getSceneList[“Name”] method in the code, which isnt correct. i dont think logic.getSceneList()[“Name”] would work either.

6 
if 'StoreScene' not in own:
    for scene in bge.logic.getSceneList():
         if scene.name == "waffles":
              own['StoreScene']=scene]
7

@mr. pancake

hud.addObject['log','slot1']

should actually have round brackets.

EDIT: Oh, and I wanted to mention: follow Daed’s helpful syntax as well (getSceneList is actually getSceneList(), and don’t reference by name, add in bge before ‘logic’).

8

Got it to work!

Code on empty object wich adds the inventory as overlay once:

bge.logic.addScene(‘inventory’,1)

Get the scene list:

scenes = bge.logic.getSceneList()

Code for adding an object to the hud where scenes[1] gets inventory from the scene list:

if player['logamount'] > 0:
    scenes[1].addObject('item_log','slot1')

I don’t know for sure, but will the addobject infinitely add the item_log object if logamount isn’t 0?

9

Assuming you have an always sensor that is positive every frame executing that code, the item_log object will constantly be added as long as player[‘logamount’] is greater than 0.

10

Ah yes it will only be ran forever if there is an always sensor with true triggerering. Thanks for the help!