def test_heightmap():
hmap = libtcodpy.heightmap_new(16, 16)
repr(hmap)
noise = libtcodpy.noise_new(2)
# basic operations
libtcodpy.heightmap_set_value(hmap, 0, 0, 1)
libtcodpy.heightmap_add(hmap, 1)
libtcodpy.heightmap_scale(hmap, 1)
libtcodpy.heightmap_clear(hmap)
libtcodpy.heightmap_clamp(hmap, 0, 0)
libtcodpy.heightmap_copy(hmap, hmap)
libtcodpy.heightmap_normalize(hmap)
libtcodpy.heightmap_lerp_hm(hmap, hmap, hmap, 0)
libtcodpy.heightmap_add_hm(hmap, hmap, hmap)
libtcodpy.heightmap_multiply_hm(hmap, hmap, hmap)
# modifying the heightmap
libtcodpy.heightmap_add_hill(hmap, 0, 0, 4, 1)
libtcodpy.heightmap_dig_hill(hmap, 0, 0, 4, 1)
libtcodpy.heightmap_rain_erosion(hmap, 1, 1, 1)
libtcodpy.heightmap_kernel_transform(hmap, 3, [-1, 1, 0], [0, 0, 0],
[.33, .33, .33], 0, 1)
libtcodpy.heightmap_add_voronoi(hmap, 10, 3, [1, 3, 5])
libtcodpy.heightmap_add_fbm(hmap, noise, 1, 1, 1, 1, 4, 1, 1)
libtcodpy.heightmap_scale_fbm(hmap, noise, 1, 1, 1, 1, 4, 1, 1)
libtcodpy.heightmap_dig_bezier(hmap, [0, 16, 16, 0], [0, 0, 16, 16], 1, 1,
1, 1)
# read data
libtcodpy.heightmap_get_value(hmap, 0, 0)
libtcodpy.heightmap_get_interpolated_value(hmap, 0, 0)
libtcodpy.heightmap_get_slope(hmap, 0, 0)
libtcodpy.heightmap_get_normal(hmap, 0, 0, 0)
libtcodpy.heightmap_count_cells(hmap, 0, 0)
libtcodpy.heightmap_has_land_on_border(hmap, 0)
libtcodpy.heightmap_get_minmax(hmap)
libtcodpy.noise_delete(noise)
libtcodpy.heightmap_delete(hmap)
def make_heightmap(size, seed):
# Gradient generated by distance to the northeast corner (creates northeast ocean).
gradient1 = lt.heightmap_new(size, size)
for col in xrange(size):
for row in xrange(size):
distance = ((row - size) ** 2 + col ** 2) ** 0.5
lt.heightmap_set_value(gradient1, row, col, distance)
lt.heightmap_clamp(gradient1, mi=0, ma=WORLD_SIZE)
lt.heightmap_scale(gradient1, 2)
# Similar gradient, but cube root (creates mountains around edge).
gradient2 = lt.heightmap_new(size, size)
for col in xrange(size):
for row in xrange(size):
distance = ((row - size) ** 2 + col ** 2) ** 0.33
lt.heightmap_set_value(gradient2, row, col, distance)
lt.heightmap_clamp(gradient2, mi=0, ma=WORLD_SIZE / 6)
lt.heightmap_scale(gradient2, 5)
# Height map based on Perlin noise.
heightmap = lt.heightmap_new(size, size)
random = lt.random_new()
if seed:
random = lt.random_new_from_seed(seed)
perlin = lt.noise_new(2, h=2, l=2, random=random)
lt.heightmap_add_fbm(heightmap, perlin, mulx=3, muly=3, addx=0, addy=0, octaves=8, delta=50, scale=100)
# Add in gradients.
lt.heightmap_add_hm(heightmap, gradient1, heightmap)
lt.heightmap_add_hm(heightmap, gradient2, heightmap)
lt.heightmap_normalize(heightmap, mi=-100, ma=105)
lt.heightmap_clamp(heightmap, mi=-50, ma=100)
lt.heightmap_normalize(heightmap, mi=-100, ma=100)
visualize(heightmap)
return heightmap