Janky Automatic Maze Solver for Vex VR

VEX V5 General Discussion General Forum
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1

I worked a day on a program that will attempt to solve a maze. While I am not a professional and I programmed it in blocks, I am pretty satisfied with the way it turned out. Give me some feedback!
(On website Vexcode VR using Wall Maze playground btw)

Here’s what it does. (Check the console for logging)

  1. Turns 360 degrees and scans every 90 to see if there is a wall in the way or if it could fall off of the map.
  2. It then randomly decides which direction to go in. (This may take a while, as the RNG has to pick a valid number)
  3. It repeats step one, step two, and this time it cannot backtrack on itself. It has to go in a direction other than the one it came in.
  4. Knowing eventually it would find itself in a dead end, It disregards the anti-backtracking policy in the program, and turns around to go the other direction.
  5. It repeats this until it eventually reaches the checkered box. (I have only witnessed my program do this once, but its the best I can do without programming my robot to have some sort of memory of where it has been before, which is super hard.)

I will include the text version for usage and testing below.

vexcode_brain_precision = 0
myVariable = 0
numberUp = 0
numberLeft = 0
numberRight = 0
numberDown = 0
turnReset = 0
repeatingCount = 0
up = False
down = False
left = False
right = False
turnDone = False

def when_started1():
global myVariable, numberUp, numberLeft, numberRight, numberDown, turnReset, repeatingCount, up, down, left, right, turnDone, vexcode_brain_precision
drivetrain.set_turn_velocity(100, PERCENT)
drivetrain.set_drive_velocity(100, PERCENT)
numberUp = 0
numberDown = 0
numberLeft = 0
numberRight = 0
while True:
    down = False
    left = False
    right = False
    up = False
    if front_eye.near_object():
        brain.new_line()
        brain.print("wall in front of me!")
        up = True
    drivetrain.turn_for(RIGHT, 90, DEGREES)
    if front_eye.near_object():
        brain.new_line()
        brain.print("wall to the right")
        right = True
    drivetrain.turn_for(RIGHT, 90, DEGREES)
    if front_eye.near_object():
        brain.new_line()
        brain.print("wall down ")
        down = True
    else:
        if location.position(Y, MM) < -800:
            brain.new_line()
            brain.print("dropoff or wall downward")
            down = True
    drivetrain.turn_for(RIGHT, 90, DEGREES)
    if front_eye.near_object():
        brain.new_line()
        brain.print("wall to the left")
        left = True
    drivetrain.turn_for(RIGHT, 90, DEGREES)
    turnDone = False
    myVariable = 0
    repeatingCount = 0
    while not turnDone:
        myVariable = round(random.randint((1 - 1), 4))
        if up and down and left and not right:
            brain.new_line()
            brain.print("Dead End!")
            numberUp = 0
            numberDown = 0
            numberLeft = 0
            numberRight = 0
        if down and right and up and not left:
            brain.new_line()
            brain.print("Dead End!")
            numberUp = 0
            numberDown = 0
            numberLeft = 0
            numberRight = 0
        if down and right and left and not up:
            brain.new_line()
            brain.print("Dead End!")
            numberUp = 0
            numberDown = 0
            numberLeft = 0
            numberRight = 0
        if left and right and up and not down:
            brain.new_line()
            brain.print("Dead End!")
            numberUp = 0
            numberDown = 0
            numberLeft = 0
            numberRight = 0
        if myVariable == 1 and not up and numberDown == 0:
            brain.new_line()
            brain.print("going Up")
            drivetrain.drive_for(FORWARD, 250, MM)
            drivetrain.turn_to_heading(0, DEGREES)
            turnDone = True
            numberUp = 1
            numberDown = 0
            numberLeft = 0
            numberRight = 0
        else:
            if myVariable == 2 and not left and numberRight == 0:
                brain.new_line()
                brain.print("going Left")
                drivetrain.turn_for(LEFT, 90, DEGREES)
                drivetrain.drive_for(FORWARD, 250, MM)
                drivetrain.turn_to_heading(0, DEGREES)
                turnDone = True
                numberUp = 0
                numberDown = 0
                numberLeft = 1
                numberRight = 0
            else:
                if myVariable == 3 and not right and numberLeft == 0:
                    brain.new_line()
                    brain.print("going Right")
                    drivetrain.turn_for(RIGHT, 90, DEGREES)
                    drivetrain.drive_for(FORWARD, 250, MM)
                    drivetrain.turn_to_heading(0, DEGREES)
                    turnDone = True
                    numberUp = 0
                    numberDown = 0
                    numberLeft = 0
                    numberRight = 1
                else:
                    if myVariable == 4 and not down and numberUp == 0:
                        brain.new_line()
                        brain.print("going Down")
                        drivetrain.turn_for(RIGHT, 90, DEGREES)
                        drivetrain.turn_for(RIGHT, 90, DEGREES)
                        drivetrain.drive_for(FORWARD, 250, MM)
                        drivetrain.turn_to_heading(0, DEGREES)
                        turnDone = True
                        numberUp = 0
                        numberDown = 1
                        numberLeft = 0
                        numberRight = 0
                    else:
                        if not turnDone:
                            brain.new_line()
                            brain.print("Reroll: ")
                            brain.print(repeatingCount + 1, precision=vexcode_brain_precision)
                            repeatingCount = repeatingCount + 1
        wait(5, MSEC)
    wait(5, MSEC)

vr_thread(when_started1())
4 Likes
2

Maybe we don’t use this word in the title for our thread? Just a thought.

2 Likes
4

what word did I use so I can change it?

5

are you talking about ghetto? not really a bad word imo.

3 Likes
8

ghetto as in janky, awkward, or unusual. Not like a german camp during the second world war

9

That word had some very negative connotations in American English depending on context, and using it to describe something sub-par is exactly that context. No real harm was done, it’s just usually a good idea to stay away from controversial language on forums like these :slight_smile:.

6 Likes
10

right. I didn’t even think about it when I posted the title.

11

idk what american english you speak but where im from unless you are talking about ghettos as in the noun, ghetto is just an adjective that basically means it works but its bad.

5 Likes