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Chasms (#19)

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* initial chasms mod

* tweak default chasm settings

* prevent chasms from breaching oil and magma seas, make veinstone actually do something

* overgenerate caverns to eliminate floating stalactites

* make veinstone punchable instead of right-clickable

* ensure dfcaverns get carved before chasms

this has an unfortunate tradeoff. Chasms will no longer have floating giant columns in them, but will also no longer have smaller stalactites and stalagmites. Also will carve chasms through lake water. Not sure if this is ideal.

* add rare big webs to the chasms, to give them a unique feature

* reverse the dependencies for df_caverns and chasms, let chasms go first.

* fix web generator

* add webs to level 3 tunnels, fix sunless sea chasms

* fix up tunnel webs

* make webs snappy

* make webs slightly more prevalent

* add chasms to the guide

* final touch-ups before merging

* allow anchoring against unloaded blocks
This commit is contained in:
FaceDeer
2021-03-28 15:20:52 -06:00
committed by GitHub
parent 0acb3ab09b
commit 9b7e71c675
23 changed files with 598 additions and 22 deletions
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29
df_caverns/level3.lua
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@ -17,6 +17,9 @@ local c_glow_ore = df_caverns.node_id.glow_ore
local c_salty_cobble = df_caverns.node_id.salty_cobble
local c_salt_crystal = df_caverns.node_id.salt_crystal
local c_sprite = df_caverns.node_id.sprite
local c_webs_egg = df_caverns.node_id.big_webs_egg
local chasms_path = minetest.get_modpath("chasms")
local subsea_level = math.floor(df_caverns.config.level3_min - (df_caverns.config.level3_min - df_caverns.config.level2_min) * 0.33)
local flooding_threshold = math.min(df_caverns.config.tunnel_flooding_threshold, df_caverns.config.cavern_threshold)
@ -355,6 +358,7 @@ local decorate_level_3 = function(minp, maxp, seed, vm, node_arrays, area, data)
local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
local flooded_caverns = nvals_cave[vi] < 0 -- this indicates if we're in the "flooded" set of caves or not.
local ystride = area.ystride
if not (flooded_caverns and minp.y < subsea_level and area:get_y(vi) < subsea_level) then
if flooded_caverns or biome_name == "blackcap" then
@ -363,9 +367,15 @@ local decorate_level_3 = function(minp, maxp, seed, vm, node_arrays, area, data)
else
df_caverns.tunnel_ceiling(minp, maxp, area, vi, nvals_cracks, data, data_param2, false)
end
if c_webs_egg and (biome_name == "barren" or biome_name == "blackcap") and nvals_cracks[index2d] > 0.5 and math.random() < 0.1 then
local index = vi-ystride
if data[index] == c_air then
data[index] = c_webs_egg
minetest.get_node_timer(area:position(index)):start(1)
end
end
else
-- air pockets
local ystride = area.ystride
local cracks = nvals_cracks[index2d]
if cracks > 0.5 and data[vi-ystride] == c_water then
data[vi-ystride] = c_air
@ -459,7 +469,7 @@ local decorate_level_3 = function(minp, maxp, seed, vm, node_arrays, area, data)
end
----------------------------------------------
-- Column material override for dry biome
-- Column material override for dry and icy biomes
for _, vi in ipairs(node_arrays.column_nodes) do
local index2d = mapgen_helper.index2di(minp, maxp, area, vi)
local biome_name = get_biome(heatmap[index2d], humiditymap[index2d])
@ -476,7 +486,7 @@ local decorate_level_3 = function(minp, maxp, seed, vm, node_arrays, area, data)
-- with the full blown generated array rigamarole.
hoar_moss_generator = hoar_moss_generator or minetest.get_perlin(hoar_moss_perlin_params)
local pos = area:position(vi)
if hoar_moss_generator.get_3d and hoar_moss_generator:get_3d({x=pos.z, y=pos.y, z=pos.x}) > 0.5 then -- TODO: version 0.4.16 gets no hoar moss
if hoar_moss_generator:get_3d({x=pos.z, y=pos.y, z=pos.x}) > 0.5 then
data[vi] = c_hoar_moss
else
data[vi] = c_ice
@ -491,6 +501,19 @@ local decorate_level_3 = function(minp, maxp, seed, vm, node_arrays, area, data)
elseif biome_name == "barren" and not flooded_caverns and data[vi] == c_wet_flowstone then
data[vi] = c_dry_flowstone
end
if chasms_path then
local pos = area:position(vi)
if chasms.is_in_chasm_without_taper(pos) then
if flooded_caverns and pos.y < subsea_level then
data[vi] = c_water -- this puts a crack in the ice of icy biomes, but why not? A crack in the ice is interesting.
else
data[vi] = c_air
end
end
end
end
vm:set_param2_data(data_param2)