dfcaverns/df_caverns/surface_tunnels.lua

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-- surface tunnels
local y_max = -10
local y_min = df_caverns.config.ymax
minetest.register_on_generated(function(minp, maxp, seed)
--if out of range of cave definition limits, abort
if minp.y > y_max or maxp.y < y_min then
return
end
local t_start = os.clock()
local vm, data, data_param2, area = mapgen_helper.mapgen_vm_data_param2()
local humiditymap = minetest.get_mapgen_object("humiditymap")
local nvals_cracks = mapgen_helper.perlin2d("df_cavern:cracks", minp, maxp, df_caverns.np_cracks)
local previous_state = "outside_region"
local previous_y = minp.y
for vi, x, y, z in area:iterp_yxz(minp, maxp) do
if y < previous_y then
previous_state = "outside_region"
end
previous_y = y
if y < y_max then
if mapgen_helper.buildable_to(data[vi]) then
if previous_state == "in_rock" and not mapgen_helper.buildable_to(data[vi-area.ystride]) then
local index2d = mapgen_helper.index2d(minp, maxp, x, z)
local humidity = humiditymap[index2d]
df_caverns.tunnel_floor(minp, maxp, area, vi-area.ystride, nvals_cracks, data, data_param2, humidity > 30)
end
previous_state = "in_tunnel"
else
if previous_state == "in_tunnel" and not mapgen_helper.buildable_to(data[vi]) then
local index2d = mapgen_helper.index2d(minp, maxp, x, z)
local humidity = humiditymap[index2d]
df_caverns.tunnel_ceiling(minp, maxp, area, vi, nvals_cracks, data, data_param2, humidity > 30)
end
previous_state = "in_rock"
end
end
end
--send data back to voxelmanip
vm:set_data(data)
vm:set_param2_data(data_param2)
--calc lighting
vm:set_lighting({day = 0, night = 0})
vm:calc_lighting()
vm:update_liquids()
--write it to world
vm:write_to_map()
local chunk_generation_time = math.ceil((os.clock() - t_start) * 1000) --grab how long it took
if chunk_generation_time < 1000 then
minetest.log("info", "[df_caverns surface tunnels] "..chunk_generation_time.." ms") --tell people how long
else
minetest.log("warning", "[df_caverns surface tunnels] took "..chunk_generation_time.." ms to generate map block "
.. minetest.pos_to_string(minp) .. minetest.pos_to_string(maxp))
end
end)