GetClicks (Run phase)

from openexp.mouse import mouse
from math import sqrt
# Create a mouse object
my_mouse = mouse(exp, visible=True)
# Define all valid target positions
coords= [[+184, +130],  [-100, +172],  [+271, -222],  [+287, +39], [-87, -39] ]
Words= ['a',  'b',  'c',  'd',  'e',  'f',  'g',  'h']
# The maximum distance in pixels that a click can be from a target position
max_err = 10
# The number of clicks to collect
max_click = 4
# Loop until we have collected all clicks
n_click = 0
#Centre coordinates
xc= self.get('width')/2
yc= self.get('height')/2
while n_click < max_click:
    # Get a click and extract the position
    button, position, timestamp = my_mouse.get_click()
    cursor_x, cursor_y = position
    # Walk through all target positions to check if the click was on a target
    for xvar, yvar in coords:
        err = sqrt((xvar+xc-cursor_x)**2+(yvar+yc-cursor_y)**2)
        if err <= max_err:
            # If the click was on a target, set the click coordinates, find the word and
            # decrease the number of clicks that we still need to collect
            exp.set('click_%d_x' % n_click, xvar)
            exp.set('click_%d_y' % n_click, yvar)
            exp.set ('click_%d_word' % n_click, Wordvar)
            n_click += 1