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geo-mapgen
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Added options to disable trees, plants, and landcover in Lua side

master
Gael-de-Sailly 2018-03-04 13:20:07 +01:00
parent 7bd9a4b513
commit f53bf3f57c
2 changed files with 27 additions and 6 deletions
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6
README.md
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@ -115,9 +115,13 @@ Geo Mapgen can calculate automatically the positions of rivers with the elevatio
Be aware that rivers calculation can be *very* slow (around 15 minutes for a 6000x6000 map).
## Configuration file
A config file `heightmap.dat.conf` is generated in the world directory. It has the same syntax than `minetest.conf`, and currently supports 6 parameters:
A config file `heightmap.dat.conf` is generated in the world directory. It has the same syntax than `minetest.conf`, and currently supports the following parameters:
- `scale_x`, `scale_y`, scale_z`: set the scale for each axis. Size of objects is **divided** by this value.
- `offset_x`, `offset_y`, `offset_z`: Offset of the world rectangle in nodes.
- `rivers`: Enable or disable land cover. Default to `true`.
- `landcover`: Enable or disable land cover.
- `plants`: Enable or disable decorations (grass, ferns, trees etc.)
- `trees`: Enable or disable schematic decorations (trees)
For example if you have generated a map with a resolution of 100 meters by pixel, and you set this in `heightmap.dat.conf`:
```

27
init.lua
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@ -15,6 +15,21 @@ local offset_x = tonumber(conf:get("offset_x")) or 0
local offset_y = tonumber(conf:get("offset_y")) or 0
local offset_z = tonumber(conf:get("offset_z")) or 0
local function get_bool(name)
local v = conf:get_bool(name)
if v == nil then
return true -- Enable by default, disable only if explicitly set to false
end
return false
end
local enable_rivers = get_bool("rivers")
local enable_landcover = get_bool("landcover")
local enable_trees = get_bool("trees")
local enable_plants = get_bool("plants")
print(enable_rivers, enable_landcover, enable_trees, enable_plants)
local remove_delay = 10 -- Number of mapgen calls until a chunk is unloaded
local function parse(str, signed) -- little endian
@ -133,11 +148,11 @@ for l=1, layer_count do
elseif datatype == 1 then
print("Rivermap enabled!")
rivermap = layer
rivers = true
rivers = enable_rivers
elseif datatype == 2 then
print("Biomemap enabled!")
biomemap = layer
biomes = true
biomes = enable_landcover
local biomes_by_name = dofile(modpath .. "/landcover.lua") -- Load biome descriptions
local biomenames = meta:split(',', true)
@ -235,11 +250,13 @@ minetest.register_on_generated(function(minp, maxp, seed)
top = biome.top
nfiller = biome.filler_depth
ntop = biome.top_depth
if maxp.y >= h and not river_here then -- Generate decoration
if enable_plants and maxp.y >= h and not river_here then -- Generate decoration
local deco, is_schem = choose_deco(biome.decos)
if deco then
if is_schem then
table.insert(schems_to_generate, {pos={x=x-2,y=h+1,z=z-2}, schem=deco}) -- Schem size is not known. Assuming that most of schematics have a size of 5, hardcode offset to 2. TODO: Change that when schematic flags will be available on minetest.place_schematic_on_vmanip
if enable_trees then
table.insert(schems_to_generate, {pos={x=x-2,y=h+1,z=z-2}, schem=deco}) -- Schem size is not known. Assuming that most of schematics have a size of 5, hardcode offset to 2. TODO: Change that when schematic flags will be available on minetest.place_schematic_on_vmanip
end
else
node_deco = deco
end
@ -287,7 +304,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
if river_here then
data[ivm] = c_rwater
ivm = ivm + ystride
elseif node_deco and h >= 0 then
elseif node_deco and h >= offset_y then
data[ivm] = node_deco
end