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 generate(self):
self.owner.log.message("Generating map...", debug = True)
noise = libtcod.noise_new(2, 0.5, 2.0)
heightmap = libtcod.heightmap_new(2*self.width, 2*self.height)
maxi = 0
mini = 0
self.tiles = [[ Tile()
for y in range(self.height) ]
for x in range(self.width) ]
self.owner.log.message("-- creating heightmap...", debug = True)
for x in range(self.width*2):
for y in range(self.height*2):
f = [3 * float(x) / (2*self.width), 3 * float(y) / (2*self.height)]
value = (libtcod.noise_get_fbm(noise, f, 5, libtcod.NOISE_PERLIN))/2
if value > maxi:
maxi = value
if value < mini:
mini = value
libtcod.heightmap_set_value(heightmap, x, y, value)
# print "-- erode the map"
# libtcod.heightmap_rain_erosion(heightmap, self.width*2*self.height*2*2,0.1,0.2)
self.owner.log.message("-- normalize heights...", debug = True)
self.heightmap = libtcod.heightmap_new(self.width*2, self.height*2)
for x in range(self.width*2):
for y in range(self.height*2):
value = libtcod.heightmap_get_value(heightmap, x, y)
if value < 0:
value += 1
mini2 = mini + 1
coeff = (value - mini2)/(1-mini2)
libtcod.heightmap_set_value(self.heightmap, x, y, -coeff)
else:
value = value / maxi
libtcod.heightmap_set_value(self.heightmap, x, y, value)
self.owner.log.message("-- setting up tiles", debug = True)
for x in range(self.width):
for y in range(self.height):
h = libtcod.heightmap_get_value(self.heightmap, x*2, y*2)
if h >= 0.05:
self.tiles[x][y].terrain = "land"
else:
self.tiles[x][y].terrain = "water"
# self.owner.log.message("-- creating temperature map", debug = True)
# noise2 = libtcod.noise_new(2, 0.5, 2.0)
# temp_max = 0
# temp_min = 1
# for x in range(self.width):
# for y in range(self.height):
# f = [3 * float(x) / (self.width), 3 * float(y) / (self.height)]
# value = (libtcod.noise_get_fbm(noise2, f, 5, libtcod.NOISE_PERLIN))/2
# value = (value + 1)/2
# if value < temp_min:
# temp_min = value
# if value > temp_max:
# temp_max = value
# self.tiles[x][y].temp = value
# temp_max = temp_max - temp_min
# height_factor = 0.5
# for x in range(self.width):
# for y in range(self.height):
# temp = (self.tiles[x][y].temp - temp_min)/temp_max
# h = libtcod.heightmap_get_value(self.heightmap, x*2, y*2)
# if h > 0:
# factor = (-h)*height_factor
# temp = temp + factor
# temp = min(1, temp)
# temp = max(0, temp)
# self.tiles[x][y].temp = temp
self.owner.log.message("-- creating rainfall map", debug = True)
noise3 = libtcod.noise_new(2, 0.5, 2.0)
self.rainmap = libtcod.heightmap_new(self.width*2, self.height*2)
rain_max = 0
rain_min = 1
for x in range(self.width*2):
for y in range(self.height*2):
f = [5 * float(x) / (self.width*2), 5 * float(y) / (self.height*2)]
value = (libtcod.noise_get_fbm(noise3, f, 5, libtcod.NOISE_PERLIN))/2
value = (value + 1)/2
if value < rain_min:
rain_min = value
if value > rain_max:
rain_max = value
self.tiles[x/2][y/2].rain = value
libtcod.heightmap_set_value(self.rainmap, x, y, value)
rain_max = rain_max - rain_min
for x in range(self.width*2):
for y in range(self.height*2):
libtcod.heightmap_set_value(self.rainmap, x, y, (libtcod.heightmap_get_value(self.rainmap, x, y) - rain_min)/rain_max)
self.tiles[x/2][y/2].rain = (self.tiles[x/2][y/2].rain - rain_min)/rain_max
self.owner.log.message("Terrain complete", debug = True)
self.owner.log.message("Painting terrain", debug = True)
deep = libtcod.Color(1, 10, 27)
mid = libtcod.Color(38, 50, 60)
shallow = libtcod.Color(51, 83, 120)
water_idx = [0, 70, 210, 255]
water_cols = [deep, deep, mid, shallow]
water_colormap = libtcod.color_gen_map(water_cols, water_idx)
mountaintop = libtcod.Color(145, 196, 88)
grass = libtcod.Color(40, 62, 19)
foothill = libtcod.Color(57, 81, 34)
sand = libtcod.Color(215, 185, 115)
watersedge = libtcod.Color(19, 97, 101)
land_idx = [0, 15, 20, 128, 255]
land_cols = [watersedge, sand, grass, foothill, mountaintop]
land_colormap = libtcod.color_gen_map(land_cols, land_idx)
# Apply height-based colours
for x in range(self.width*2):
for y in range(self.height*2):
value = libtcod.heightmap_get_value(self.heightmap, x, y)
if value < 0:
index = int(-value * 255)
libtcod.image_put_pixel(self.image, x, y, water_colormap[index])
else:
index = int(value * 255)
libtcod.image_put_pixel(self.image, x, y, land_colormap[index])
# Adjust colours for desert-plains-forest
for x in range(self.width*2):
for y in range(self.height*2):
if libtcod.heightmap_get_value(self.heightmap, x, y) > 0:
rain = libtcod.heightmap_get_value(self.rainmap, x, y)
cur_col = libtcod.image_get_pixel(self.image, x, y)
cols = [libtcod.light_sepia, cur_col, cur_col, cur_col * 1.1]
col_idx = [0, 100, 165, 255]
col_map = libtcod.color_gen_map(cols, col_idx)
index = int(rain*255)
if index > 165 and libtcod.heightmap_get_value(self.heightmap, x, y) > 0.15:
self.tiles[x/2][y/2].biome = "forest"
self.tiles[x/2][y/2].char = 'T'
self.tiles[x/2][y/2].fg_color = grass * 0.7
libtcod.image_put_pixel(self.image, x, y, col_map[index])
self.owner.log.message("-- apply normal shadows", debug = True)
for x in range(self.width*2):
for y in range(self.height*2):
normal = libtcod.heightmap_get_normal(self.heightmap, x, y, 0)
nx = normal[0]
ny = normal[1]
avg = (nx + ny)/2
if avg > 0:
avg = 1
else:
avg = avg + 1
avg = min(avg/2 + 0.5, 1)
col = libtcod.image_get_pixel(self.image, x, y) * avg
libtcod.image_put_pixel(self.image, x, y, col)
self.owner.log.message("Placing cities", debug=True)
self.owner.entities = []
max_cities = 10
num_cities = 0
for i in range(max_cities):
x = libtcod.random_get_int(0, 0, self.width - 1)
y = libtcod.random_get_int(0, 0, self.height - 1)
if self.tiles[x][y].terrain == "land":
city = entity.City(self.owner, x, y, '#', libtcod.Color(libtcod.random_get_int(0, 0, 255), libtcod.random_get_int(0, 0, 255), libtcod.random_get_int(0, 0, 255)))
self.owner.entities.append(city)
num_cities += 1
self.owner.log.message("-- placed " + str(num_cities) + " cities")
self.owner.log.message("Map generated", debug = True)
self.generated = True