mirror of
https://github.com/FaceDeer/dfcaverns.git
synced 2024-11-14 14:40:29 +01:00
88 lines
2.8 KiB
Lua
88 lines
2.8 KiB
Lua
-- surface tunnels
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local y_max = 200
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local y_min = df_caverns.config.ymax
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local c_stone = df_caverns.node_id.stone
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local c_air = df_caverns.node_id.air
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minetest.register_on_generated(function(minp, maxp, seed)
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--if out of range of cave definition limits, abort
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if minp.y > y_max or maxp.y < y_min then
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return
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end
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local t_start = os.clock()
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local vm, data, data_param2, area = mapgen_helper.mapgen_vm_data_param2()
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local data_changed = false
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local eminp = {x=minp.x, y=area.MinEdge.y, z=minp.z}
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local emaxp = {x=maxp.x, y=area.MaxEdge.y, z=maxp.z}
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local minp_y = minp.y
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local maxp_y = maxp.y
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local humiditymap = minetest.get_mapgen_object("humiditymap")
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local nvals_cracks = mapgen_helper.perlin2d("df_cavern:cracks", minp, maxp, df_caverns.np_cracks)
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local previous_y = eminp.y-1
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local previous_potential_floor_vi
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local previous_potential_floor_y
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local previous_node
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for vi, x, y, z in area:iterp_yxz(eminp, emaxp) do
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if y < previous_y then
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-- we've started a new column, initialize everything
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previous_potential_floor_vi = nil
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previous_potential_floor_y = nil
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previous_node = nil
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end
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previous_y = y
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local current_node = data[vi]
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if previous_node and y < y_max then
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if current_node == c_air and previous_node == c_stone then
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-- this may be a floor, but only if we eventually hit a ceiling in this column
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previous_potential_floor_vi = vi-area.ystride
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previous_potential_floor_y = y-1
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elseif current_node == c_stone and previous_node == c_air and previous_potential_floor_vi then
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-- we hit a ceiling after passing through a floor
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local index2d = mapgen_helper.index2d(minp, maxp, x, z)
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local humidity = humiditymap[index2d]
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if previous_potential_floor_y <= maxp_y and previous_potential_floor_y >= minp_y then
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data_changed = true
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df_caverns.tunnel_floor(minp, maxp, area, previous_potential_floor_vi, nvals_cracks, data, data_param2, humidity > 30)
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end
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if y <= maxp_y and y >= minp_y then
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data_changed = true
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df_caverns.tunnel_ceiling(minp, maxp, area, vi, nvals_cracks, data, data_param2, humidity > 30)
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end
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previous_potential_floor_vi = nil
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elseif not mapgen_helper.buildable_to(current_node) then
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-- we've entered a non-stone ceiling of some kind. Abort potential floor-ceiling pair detection.
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previous_potential_floor_vi = nil
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end
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end
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previous_node = current_node
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end
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if data_changed then
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--send data back to voxelmanip
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vm:set_data(data)
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vm:set_param2_data(data_param2)
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--calc lighting
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vm:set_lighting({day = 0, night = 0})
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vm:calc_lighting()
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vm:update_liquids()
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--write it to world
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vm:write_to_map()
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end
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local time_taken = os.clock() - t_start -- how long this chunk took, in seconds
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mapgen_helper.record_time("df_caverns surface tunnels", time_taken)
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end)
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