OpenSesame script to draw mouse cursor

gistfile1.py

from openexp.mouse import mouse
from openexp.canvas import canvas

# Uncomment for 0.25 and earlier
# exp = self.experiment

# The name of the sketchpad item to draw the cursor on
src_sketchpad = 'my_sketchpad'

# The size of the cursor crosshair
cross_size = 8

# Create a mouse and canvas object
my_mouse = mouse(exp)
my_canvas = canvas(exp)

# Use the onset of the source sketchpad as the start of the response
# interval
start_time = self.get('time_%s' % src_sketchpad)

# Wait for a response
while True:
	button, position, timestamp = my_mouse.get_click(timeout=20)
	if button != None:
		break		
	pos, time = my_mouse.get_pos()
	my_canvas.copy(exp.items[src_sketchpad].canvas)
	my_canvas.line(pos[0], pos[1]-cross_size, pos[0], pos[1]+cross_size)
	my_canvas.line(pos[0]-cross_size, pos[1], pos[0]+cross_size, pos[1])	
	my_canvas.show()
	
# Determine response, rt, and correct
response = button
response_time = timestamp-start_time
correct = 1

# Maintain feedback variables. This ensures that
# you can use the feedback item as usual
exp.set('response_time', response_time)
exp.set('response', response)
exp.set('correct', correct)
exp.set('cursor_x', pos[0])
exp.set('cursor_y', pos[1])
exp.total_responses += 1
exp.total_correct += correct
exp.total_response_time += response_time
exp.acc = 100. * exp.total_correct / exp.total_responses
exp.avg_rt = exp.total_response_time / exp.total_responses
exp.accuracy = exp.acc
exp.average_response_time = exp.avg_rt