[visionegg] mouse works -now: right/left mouse button and reaction Time

Hi Andrew
Thanks for the hint with the unnecessary controller... now it works
fine, I get the time, the mouse is pressed in the file logged at the
end.

1) I have to know, which button has been pressed: LEFT or RIGHT
what is the most easiest way, to achieve this?

2) the timing of the mouse press is now nicely logged. but what I need,
to get the reaction time, is the exact time, where the picture has been
swapped to the screen. How can I log this time together with the name of
the stimulus for each stimulus?
when we have this, there is a lot of stuff already achieved.

now, only waiting for each stimulus for the next trigger needs to be
implemented

-> 3)

thanks a lot!!

Christoph


-------------------------------------------------------------
#!/usr/bin/env python
"""Load a picture from a file."""

############################
#  Import various modules  #
############################

from random import *
import os
from VisionEgg import *
from VisionEgg.Core import *
from VisionEgg.Textures import *
from math import *
import pygame

path =
"/home/christoph/work/programming/my_ve_projects/load_picture/data/"
#the path the images are in

photo = []
photoX = []

# present them in random order
for filename in os.listdir(path):
    photo.append(filename)
length = len(photo)
for i in range(0, length):
    ran = randint(0, len(photo)-1)
    file = photo[ran]
    photoX.append(file)
    photo.pop(ran)

os.chdir(path)

screen = get_default_screen()

duration_per_image = 1 # seconds
num_images = len(photoX)

# Create list of stimuli
preloaded_stimulus_list = [] # empty at first
for i in range(num_images):
    # Read the texture file
    texture = TextureFromFile(photoX[i])

    x = screen.size[0]/2 - texture.orig.size[0]/2
    y = screen.size[1]/2 - texture.orig.size[1]/2

    # Load the texture to OpenGL, prepare for display
    stimulus = TextureStimulus(texture = texture,
                               size = texture.orig.size,
                               lowerleft=(x,y))
  
    # Add to list of stimuli
    preloaded_stimulus_list.append( stimulus )

def image_selector( t ):
    i = int(t/duration_per_image)
    return [ preloaded_stimulus_list[i] ]
viewport = Viewport(screen=screen)



#############################################
#  Create event handler callback functions  #
#############################################

# mouse state global variables
pressed = 0
released = 0
button_press_time = []

def mousebuttondown(event):
    global pressed
    button_press_time.append(VisionEgg.timing_func())
        
def mousebuttonup(event):
    global released

        
handle_event_callbacks = [(pygame.locals.MOUSEBUTTONDOWN,
mousebuttondown),
                          (pygame.locals.MOUSEBUTTONUP, mousebuttonup)]

p = Presentation(go_duration=(duration_per_image *
num_images,'seconds'),
                 viewports=[viewport],
                 check_events=1,
                 handle_event_callbacks=handle_event_callbacks)

#############################################################
#  Connect the controllers with the variables they control  #
#############################################################

p.add_controller(viewport,'stimuli',
                 FunctionController(during_go_func=image_selector) )

#######################
#  Run the stimulus!  #
#######################

p.go()

############################################
#  write the button press times to a file  #
############################################

f=open('/home/christoph/work/programming/my_ve_projects/load_picture/exp_log_file',
 'w')
for x in button_press_time:
    f.write(repr(x)+'\n')
f.close()


----------------------------------------------------------

-- 
Christoph Lehmann 
Department of Psychiatric Neurophysiology 
University Hospital of Clinical Psychiatry 
Waldau 
CH-3000 Bern 60 
Switzerland 

Phone:  ++41 31 930 93 83 
Fax:    ++41 31 930 96 61 
Email:  lehmann@xxxxxxxxxxxx 
Web:    

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