Game Development Reference
In-Depth Information
def
can_go_forward?
in_front
=
Utils
.
point_at_distance(
*
@viewer
.
location,
@viewer
.
direction,
40
)
@object_pool
.
map
.
can_move_to?(
*
in_front)
&&
@object_pool
.
nearby_point(
*
in_front,
40
,
@viewer
)
.
reject {
|
o
|
o
.
is_a?
Powerup
}
.
empty?
end
def
closest_free_path
(away_from
=
nil
)
paths
= []
5.
times
do
|
i
|
if
paths
.
any?
return
farthest_from(paths, away_from)
end
radius
= 55 -
i
* 5
range_x
=
range_y
= [-
radius,
0
, radius
]
range_x
.
shuffle
.
each
do
|
x
|
range_y
.
shuffle
.
each
do
|
y
|
x
=
@viewer
.
x
+
x
y
=
@viewer
.
y
+
y
if
@object_pool
.
map
.
can_move_to?(x, y)
&&
@object_pool
.
nearby_point(x, y, radius,
@viewer
)
.
reject {
|
o
|
o
.
is_a?
Powerup
}
.
empty?
if
away_from
paths
<< [
x, y
]
else
return
[
x, y
]
end
end
end
end
end
false
end
alias
:closest_free_path_away_from :closest_free_path
# ...
private
def
farthest_from
(paths, away_from)
paths
.
sort
do
|
p1, p2
|
Utils
.
distance_between(
*
p1,
*
away_from)
<=>
Utils
.
distance_between(
*
p2,
*
away_from)
end
.
first
end
