247 lines
6.1 KiB
Lua
247 lines
6.1 KiB
Lua
-- highlandpools 0.1.0 by paramat
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-- For latest stable Minetest back to 0.4.8
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-- Depends default
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-- Licenses: code WTFPL
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-- Parameters
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local FLOW = 256
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-- Stuff
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highlandpools = {}
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-- Functions
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function highlandpools_remtree(x, y, z, area, data)
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local c_tree = minetest.get_content_id("default:tree")
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local c_apple = minetest.get_content_id("default:apple")
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local c_leaves = minetest.get_content_id("default:leaves")
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local c_air = minetest.get_content_id("air")
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for j = 1, 7 do
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for i = -2, 2 do
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for k = -2, 2 do
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local vi = area:index(x+i, y+j, z+k)
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if data[vi] == c_tree
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or data[vi] == c_apple
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or data[vi] == c_leaves then
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data[vi] = c_air
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end
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end
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end
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end
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for j = 1, 7 do
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for i = -2, 2 do
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for k = -2, 2 do
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local vi = area:index(x+i, y-j, z+k)
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if data[vi] == c_tree
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or data[vi] == c_apple
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or data[vi] == c_leaves then
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data[vi] = c_air
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end
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end
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end
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end
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end
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-- On generated function
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minetest.register_on_generated(function(minp, maxp, seed)
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local y0 = minp.y
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if y0 ~= -32 then
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return
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end
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local t1 = os.clock()
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local x0 = minp.x
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local z0 = minp.z
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print ("[highlandpools] chunk ("..x0.." "..y0.." "..z0..")")
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local x1 = maxp.x
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local y1 = maxp.y
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local z1 = maxp.z
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local sidelen = x1 - x0 -- actually sidelen - 1
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local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
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local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
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local data = vm:get_data()
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local c_air = minetest.get_content_id("air")
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local c_ignore = minetest.get_content_id("ignore")
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local c_watsour = minetest.get_content_id("default:water_source")
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local c_grass = minetest.get_content_id("default:dirt_with_grass")
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local c_tree = minetest.get_content_id("default:tree")
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local c_apple = minetest.get_content_id("default:apple")
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local c_leaves = minetest.get_content_id("default:leaves")
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local c_dirt = minetest.get_content_id("default:dirt")
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for xcen = x0 + 8, x1 - 7, 8 do
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for zcen = z0 + 8, z1 - 7, 8 do
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local yasurf = false -- y of above surface node
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for y = y1, 2, -1 do
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local vi = area:index(xcen, y, zcen)
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local c_node = data[vi]
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if c_node == c_watsour then
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break
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elseif c_node == c_grass then
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yasurf = y + 1
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break
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end
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end
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if yasurf then
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local abort = false
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for ser = 1, 80 do
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local vi = area:index(xcen + ser, yasurf, zcen)
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local c_node = data[vi]
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if xcen + ser == x1 then
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abort = true
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elseif c_node ~= c_air
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and c_node ~= c_ignore
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and c_node ~= c_tree
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and c_node ~= c_leaves
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and c_node ~= c_apple then
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break
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end
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end
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for ser = 1, 80 do
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local vi = area:index(xcen - ser, yasurf, zcen)
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local c_node = data[vi]
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if xcen - ser == x0 then
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abort = true
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elseif c_node ~= c_air
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and c_node ~= c_ignore
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and c_node ~= c_tree
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and c_node ~= c_leaves
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and c_node ~= c_apple then
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break
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end
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end
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for ser = 1, 80 do
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local vi = area:index(xcen, yasurf, zcen + ser)
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local c_node = data[vi]
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if zcen + ser == z1 then
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abort = true
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elseif c_node ~= c_air
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and c_node ~= c_ignore
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and c_node ~= c_tree
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and c_node ~= c_leaves
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and c_node ~= c_apple then
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break
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end
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end
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for ser = 1, 80 do
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local vi = area:index(xcen, yasurf, zcen - ser)
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local c_node = data[vi]
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if zcen - ser == z0 then
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abort = true
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elseif c_node ~= c_air
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and c_node ~= c_ignore
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and c_node ~= c_tree
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and c_node ~= c_leaves
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and c_node ~= c_apple then
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break
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end
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end
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if abort then
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break
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end
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local vi = area:index(xcen, yasurf, zcen)
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data[vi] = c_watsour
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local flab = false -- flow abort
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for flow = 1, FLOW do
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for z = z0, z1 do
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for x = x0, x1 do
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local vif = area:index(x, yasurf, z)
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if data[vif] == c_watsour then
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if x == x0 or x == x1 or z == z0 or z == z1 then
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flab = true -- if water at chunk edge abort flow
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break
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else -- flow water
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local vie = area:index(x + 1, yasurf, z)
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local viw = area:index(x - 1, yasurf, z)
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local vin = area:index(x, yasurf, z + 1)
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local vis = area:index(x, yasurf, z - 1)
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if data[vie] == c_tree then
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highlandpools_remtree(x + 1, yasurf, z, area, data)
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data[vie] = c_watsour
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elseif data[vie] == c_air
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or data[vie] == c_apple
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or data[vie] == c_leaves then
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data[vie] = c_watsour
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end
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if data[viw] == c_tree then
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highlandpools_remtree(x - 1, yasurf, z, area, data)
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data[viw] = c_watsour
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elseif data[viw] == c_air
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or data[viw] == c_apple
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or data[viw] == c_leaves then
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data[viw] = c_watsour
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end
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if data[vin] == c_tree then
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highlandpools_remtree(x, yasurf, z + 1, area, data)
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data[vin] = c_watsour
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elseif data[vin] == c_air
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or data[vin] == c_apple
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or data[vin] == c_leaves then
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data[vin] = c_watsour
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end
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if data[vis] == c_tree then
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highlandpools_remtree(x, yasurf, z - 1, area, data)
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data[vis] = c_watsour
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elseif data[vis] == c_air
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or data[vis] == c_apple
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or data[vis] == c_leaves then
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data[vis] = c_watsour
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end
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end
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end
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end
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if flab then
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break
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end
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end
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if flab then
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break
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end
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end
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if flab then -- erase water from this y level
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for z = z0, z1 do
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for x = x0, x1 do
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local vi = area:index(x, yasurf, z)
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if data[vi] == c_watsour then
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data[vi] = c_air
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end
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end
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end
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else -- flow downwards add dirt
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for z = z0, z1 do
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for x = x0, x1 do
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local vi = area:index(x, yasurf, z)
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if data[vi] == c_watsour then
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for y = yasurf - 1, y0, -1 do
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local viu = area:index(x, y, z)
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if data[viu] == c_air then
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data[viu] = c_watsour
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elseif data[viu] == c_grass then
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data[viu] = c_dirt
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break
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else
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break
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end
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end
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end
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end
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end
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end
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end
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end
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end
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vm:set_data(data)
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vm:set_lighting({day=0, night=0})
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vm:calc_lighting()
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vm:write_to_map(data)
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local chugent = math.ceil((os.clock() - t1) * 1000)
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print ("[highlandpools] time "..chugent.." ms")
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end) |