mtcontrib/mapgen_rivers
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Added settings for margin, and documented in settingtypes.txt

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Gael-de-Sailly 2022-01-03 15:45:27 +01:00
parent a00c1cbd39
commit b1f4437a91
4 changed files with 19 additions and 6 deletions
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6
heightmap.lua
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@ -6,7 +6,7 @@ local transform_quadri = dofile(modpath .. 'geometry.lua')
local sea_level = mapgen_rivers.settings.sea_level local sea_level = mapgen_rivers.settings.sea_level
local riverbed_slope = mapgen_rivers.settings.riverbed_slope * mapgen_rivers.settings.blocksize local riverbed_slope = mapgen_rivers.settings.riverbed_slope * mapgen_rivers.settings.blocksize
local MAP_BOTTOM = -31000 local out_elev = mapgen_rivers.settings.margin_elev
-- Localize for performance -- Localize for performance
local floor, min, max = math.floor, math.min, math.max local floor, min, max = math.floor, math.min, math.max
@ -128,8 +128,8 @@ local function heightmaps(minp, maxp)
terrain_height_map[i] = terrain_height terrain_height_map[i] = terrain_height
lake_height_map[i] = lake_height lake_height_map[i] = lake_height
else else
terrain_height_map[i] = MAP_BOTTOM terrain_height_map[i] = out_elev
lake_height_map[i] = MAP_BOTTOM lake_height_map[i] = out_elev
end end
i = i + 1 i = i + 1
end end

6
pregenerate.lua
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@ -13,9 +13,9 @@ local time_step = mapgen_rivers.settings.evol_time_step
local niter = math.ceil(time/time_step) local niter = math.ceil(time/time_step)
time_step = time / niter time_step = time / niter
local use_margin = true local use_margin = mapgen_rivers.settings.margin
local margin_width = 2000 / blocksize local margin_width = mapgen_rivers.settings.margin_width / blocksize
local margin_elev = -200 local margin_elev = mapgen_rivers.settings.margin_elev
local function margin(dem, width, elev) local function margin(dem, width, elev)
local X, Y = dem.X, dem.Y local X, Y = dem.X, dem.Y

3
settings.lua
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@ -74,6 +74,9 @@ mapgen_rivers.settings = {
grid_x_size = def_setting('grid_x_size', 'number', 1000), grid_x_size = def_setting('grid_x_size', 'number', 1000),
grid_z_size = def_setting('grid_z_size', 'number', 1000), grid_z_size = def_setting('grid_z_size', 'number', 1000),
margin = def_setting('margin', 'bool', true),
margin_width = def_setting('margin_width', 'number', 2000),
margin_elev = def_setting('margin_elev', 'number', -200),
evol_params = { evol_params = {
K = def_setting('river_erosion_coef', 'number', 0.5), K = def_setting('river_erosion_coef', 'number', 0.5),
m = def_setting('river_erosion_power', 'number', 0.4), m = def_setting('river_erosion_power', 'number', 0.4),

10
settingtypes.txt
View File

@ -17,6 +17,16 @@ mapgen_rivers_grid_x_size (Grid X size) int 1000 50 5000
# Actual size of the map is grid_z_size * blocksize # Actual size of the map is grid_z_size * blocksize
mapgen_rivers_grid_z_size (Grid Z size) int 1000 50 5000 mapgen_rivers_grid_z_size (Grid Z size) int 1000 50 5000
# If margin is enabled, elevation becomes closer to a fixed value when approaching
# the edges of the map.
mapgen_rivers_margin (Margin) bool true
# Width of the transition at map borders, in nodes
mapgen_rivers_margin_width (Margin width) float 2000.0 0.0 15000.0
# Elevation toward which to converge at map borders
mapgen_rivers_margin_elev (Margin elevation) float -200.0 -31000.0 31000.0
# Minimal catchment area for a river to be drawn, in square nodes # Minimal catchment area for a river to be drawn, in square nodes
# Lower value means bigger river density # Lower value means bigger river density
mapgen_rivers_min_catchment (Minimal catchment area) float 3600.0 100.0 1000000.0 mapgen_rivers_min_catchment (Minimal catchment area) float 3600.0 100.0 1000000.0