# Mission 7 Objective 7
from botcore import *

power = 1
thresh = 75

def cal_thresh():
    global thresh
    det = 101
    sensed = prox.range(10, power)

    if sensed[LEFT] > 0:
        det = sensed[LEFT]
    if sensed[RIGHT] > 0:
        det = min(det, sensed[RIGHT])

    if det > 100:
        thresh = 100
    else:
        thresh = det - 5

    print("Sensed=", sensed, " set thresh=", thresh)

def cal_power():
    global power
    power = 1
    while power < 9:
        cal_thresh()
        if thresh < 100:
            break
        power = power + 1

# -- Main program --
while True:
    if buttons.was_pressed(1):
        cal_power()
        print("Power=", power, "thresh=", thresh)

    p = prox.detect(power, thresh)
    leds.prox(p)