summaryrefslogtreecommitdiff
path: root/robot/problems/introduction/forward1m/common.py
blob: a8dd9adf022d700b9ccfa6f19ffc4fc49e67713c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
# coding=utf-8

from python.util import has_token_sequence, string_almost_equal, \
    string_contains_number, get_tokens, get_numbers, get_exception_desc
from server.hints import Hint

id = 208
group = 'introduction'
number = 2
visible = True

solution = '''\
from ev3dev import *
from mindstorms_widgets import mindstorms_widgets

robot = mindstorms_widgets()
robot.connect_motor( 'left' )
robot.connect_motor( 'right' )

robot.move_steering( 'on_for_rotations', direction=0, rotations=5.71 )
'''

hint_type = {
    'mW_init': Hint('mW_init'),
    'connectMotorLeft': Hint('connectMotorLeft'),
    'connectMotorRight': Hint('connectMotorRight'),
    'moveSteering': Hint('moveSteering'),
    'onForRotations': Hint('onForRotations'),
    'direction': Hint('direction'),
    'rotations': Hint('rotations'),
}

def hint(code):
    tokens = get_tokens(code)

    # if code does not include mindstorms_widgets(), a student gets a hint that the robot should be somehow represented in the program
    if not has_token_sequence(tokens, ['mindstorms_widgets', '(',')']):
        return [{'id': 'mW_init'}]

    # if code does not include connect_motor statement, a student needs to learn about how to connect the motors
    if not has_token_sequence(tokens, ['connect_motor']) and not has_token_sequence(tokens, ['left']):
        return [{'id': 'connectMotorLeft'}]

    # if code does not include connect_motor statement, a student needs to learn about how to connect the motors
    if not has_token_sequence(tokens, ['connect_motor']) and not has_token_sequence(tokens, ['right']):
        return [{'id': 'connectMotorRight'}]

    if not has_token_sequence(tokens, ['move_steering']):
        return [{'id': 'moveSteering'}]

    if not 'on_for_rotations' in code:
        return [{'id': 'onForRotations'}]
    
    if not 'direction' in code:
        return [{'id': 'direction'}]
    
    if not 'rotations' in code:
        return [{'id': 'rotations'}]

    return None