Game Development Reference
In-Depth Information
8
@input
.
control(
self
)
9
@physics
=
TankPhysics
.
new(
self
, object_pool)
10
@graphics
=
TankGraphics
.
new(
self
)
11
@sounds
=
TankSounds
.
new(
self
)
12
@direction
=
@gun_angle
= 0.0
13
end
14
15
def
shoot
(target_x, target_y)
16
if
Gosu
.
milliseconds
-
(
@last_shot
|| 0
)
>
SHOOT_DELAY
17
@last_shot
=
Gosu
.
milliseconds
18
Bullet
.
new(object_pool,
@x
,
@y
, target_x, target_y)
.
fire(
100
)
19
end
20
end
21
end
Tank
class was reduced over 5 times. We could go further and extract
Gun
component,
but for now it's simple enough already. Now, the components.
05-refactor/entities/components/tank_physics.rb
1
class
TankPhysics
<
Component
2
attr_accessor
:speed
3
4
def
initialize
(game_object, object_pool)
5
super
(game_object)
6
@object_pool
=
object_pool
7
@map
=
object_pool
.
map
8
game_object
.
x, game_object
.
y
=
@map
.
find_spawn_point
9
@speed
= 0.0
10
end
11
12
def
can_move_to?
(x, y)
13
@map
.
can_move_to?(x, y)
14
end
15
16
def
moving?
17
@speed
> 0
18
end
19
20
def
update
21
if
object
.
throttle_down
22
accelerate
23
else
24
decelerate
25
end
26
if
@speed
> 0
