Game Development Reference
In-Depth Information
7
8
def
update
9
change_direction
if
should_change_direction?
10
if
substate_expired?
11
rand
> 0.3 ?
drive : wait
12
end
13
end
14
15
def
change_direction
16
change
=
case
rand
(
0.
.
100
)
17
when
0.
.
30
18
-45
19
when
30.
.
60
20
45
21
when
60.
.
70
22
90
23
when
80.
.
90
24
-90
25
else
26
0
27
end
28
if
change
!= 0
29
@object
.
physics
.
change_direction(
@object
.
direction
+
change)
30
31
end
32
@changed_direction_at
=
Gosu
.
milliseconds
33
@will_keep_direction_for
=
turn_time
34
end
35
36
def
wait_time
37
rand
(
500.
.
2000
)
38
end
39
40
def
drive_time
41
rand
(
1000.
.
5000
)
42
end
43
44
def
turn_time
45
rand
(
2000.
.
5000
)
46
end
47
end
The logic here:
