Game Development Reference
In-Depth Information
38
tile
.
draw(map_x, map_y,
0
)
39
end
40
end
41
end
42
end
43
44
private
45
46
def
tile_at
(x, y)
47
t_x
=
((x
/
TILE_SIZE
)
%
TILE_SIZE
)
.
floor
48
t_y
=
((y
/
TILE_SIZE
)
%
TILE_SIZE
)
.
floor
49
row
=
@map
[
t_x
]
50
row
[
t_y
]
if
row
51
end
52
53
def
load_tiles
54
tiles
=
Gosu
::
Image
.
load_tiles(
$window
,
Game
.
media_path(
'ground.png'
),
55
128
,
128
,
true
)
56
@sand
=
tiles
[0]
57
@grass
=
tiles
[8]
58
@water
=
Gosu
::
Image
.
new(
59
$window
,
Game
.
media_path(
'water.png'
),
true
)
60
61
end
62
63
def
generate_map
64
noises
=
Perlin
::
Noise
.
new(
2
)
65
contrast
=
Perlin
::
Curve
.
contrast(
66
Perlin
::
Curve
::
CUBIC
,
2
)
67
map
=
{}
68
MAP_WIDTH
.
times
do
|
x
|
69
map
[
x
] =
{}
70
MAP_HEIGHT
.
times
do
|
y
|
71
n
=
noises
[
x
* 0.1
, y
* 0.1]
72
n
=
contrast
.
call(n)
73
map
[
x
][
y
] =
choose_tile(n)
74
end
75
end
76
map
77
end
78
79
def
choose_tile
(val)
80
case
val
81
when
0.0.
.
0.3
# 30% chance
82
@water
83
when
0.3.
.
0.45
# 15% chance, water edges
