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server-nalc/minetestforfun_game/mods/highlandpools/init.lua
2014-12-27 18:35:33 +01:00

265 lines
6.8 KiB
Lua

-- highlandpools 0.1.1 by paramat
-- For latest stable Minetest back to 0.4.8
-- Depends default
-- Licenses: code WTFPL
-- Parameters
local YMAX = 64 -- Maximum altitude for pools
local FLOW = 256
-- Stuff
highlandpools = {}
-- Functions
minetest.register_abm({
nodenames = {"default:grass_1","default:grass_2","default:grass_3","default:grass_4",
"default:grass_5","default:grass_6","default:grass_7","default:grass_8",
"cavestuff:pebble_2","group:flowers"},
interval = 1,
chance = 1,
action = function(pos)
if minetest.get_node({x = pos.x, y = pos.y+1, z = pos.z}).name == "default:water_source"
or minetest.get_node({x = pos.x, y = pos.y+1, z = pos.z}).name == "default:water_flowing" then
minetest.remove_node(pos)
end
end,
})
function highlandpools_remtree(x, y, z, area, data)
local c_tree = minetest.get_content_id("default:tree")
local c_apple = minetest.get_content_id("default:apple")
local c_leaves = minetest.get_content_id("default:leaves")
local c_air = minetest.get_content_id("air")
for j = 1, 7 do
for i = -2, 2 do
for k = -2, 2 do
local vi = area:index(x+i, y+j, z+k)
if data[vi] == c_tree
or data[vi] == c_apple
or data[vi] == c_leaves then
data[vi] = c_air
end
end
end
end
for j = 1, 7 do
for i = -2, 2 do
for k = -2, 2 do
local vi = area:index(x+i, y-j, z+k)
if data[vi] == c_tree
or data[vi] == c_apple
or data[vi] == c_leaves then
data[vi] = c_air
end
end
end
end
end
-- On generated function
minetest.register_on_generated(function(minp, maxp, seed)
local y0 = minp.y
if y0 < -32 or y0 > YMAX then
return
end
local t1 = os.clock()
local x0 = minp.x
local z0 = minp.z
-- print ("[highlandpools] chunk ("..x0.." "..y0.." "..z0..")")
local x1 = maxp.x
local y1 = maxp.y
local z1 = maxp.z
local sidelen = x1 - x0 -- actually sidelen - 1
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local area = VoxelArea:new{MinEdge=emin, MaxEdge=emax}
local data = vm:get_data()
local c_air = minetest.get_content_id("air")
local c_ignore = minetest.get_content_id("ignore")
local c_watsour = minetest.get_content_id("default:water_source")
local c_grass = minetest.get_content_id("default:dirt_with_grass")
local c_tree = minetest.get_content_id("default:tree")
local c_apple = minetest.get_content_id("default:apple")
local c_leaves = minetest.get_content_id("default:leaves")
local c_dirt = minetest.get_content_id("default:dirt")
for xcen = x0 + 8, x1 - 7, 8 do
for zcen = z0 + 8, z1 - 7, 8 do
local yasurf = false -- y of above surface node
for y = y1, 2, -1 do
local vi = area:index(xcen, y, zcen)
local c_node = data[vi]
if y == y1 and c_node ~= c_air then -- if top node solid
break
elseif c_node == c_watsour then
break
elseif c_node == c_grass then
yasurf = y --+ 1
break
end
end
if yasurf then
local abort = false
for ser = 1, 80 do
local vi = area:index(xcen + ser, yasurf, zcen)
local c_node = data[vi]
if xcen + ser == x1 then
abort = true
elseif c_node ~= c_air
and c_node ~= c_tree
and c_node ~= c_leaves
and c_node ~= c_apple then
break
end
end
for ser = 1, 80 do
local vi = area:index(xcen - ser, yasurf, zcen)
local c_node = data[vi]
if xcen - ser == x0 then
abort = true
elseif c_node ~= c_air
and c_node ~= c_tree
and c_node ~= c_leaves
and c_node ~= c_apple then
break
end
end
for ser = 1, 80 do
local vi = area:index(xcen, yasurf, zcen + ser)
local c_node = data[vi]
if zcen + ser == z1 then
abort = true
elseif c_node ~= c_air
and c_node ~= c_tree
and c_node ~= c_leaves
and c_node ~= c_apple then
break
end
end
for ser = 1, 80 do
local vi = area:index(xcen, yasurf, zcen - ser)
local c_node = data[vi]
if zcen - ser == z0 then
abort = true
elseif c_node ~= c_air
and c_node ~= c_tree
and c_node ~= c_leaves
and c_node ~= c_apple then
break
end
end
if abort then
break
end
local vi = area:index(xcen, yasurf, zcen)
data[vi] = c_watsour
local flab = false -- flow abort
for flow = 1, FLOW do
for z = z0, z1 do
for x = x0, x1 do
local vif = area:index(x, yasurf, z)
if data[vif] == c_watsour then
if x == x0 or x == x1 or z == z0 or z == z1 then
flab = true -- if water at chunk edge abort flow
break
else -- flow water
local vie = area:index(x + 1, yasurf, z)
local viw = area:index(x - 1, yasurf, z)
local vin = area:index(x, yasurf, z + 1)
local vis = area:index(x, yasurf, z - 1)
local vied = area:index(x + 1, yasurf-1, z)
local viwd = area:index(x - 1, yasurf-1, z)
local vind = area:index(x, yasurf-1, z + 1)
local visd = area:index(x, yasurf-1, z - 1)
if data[vie] == c_tree then
highlandpools_remtree(x + 1, yasurf, z, area, data)
data[vie] = c_watsour
elseif data[vie] == c_air
or data[vie] == c_apple
or data[vie] == c_leaves then
data[vie] = c_watsour
end
if data[viw] == c_tree then
highlandpools_remtree(x - 1, yasurf, z, area, data)
data[viw] = c_watsour
elseif data[viw] == c_air
or data[viw] == c_apple
or data[viw] == c_leaves then
data[viw] = c_watsour
end
if data[vin] == c_tree then
highlandpools_remtree(x, yasurf, z + 1, area, data)
data[vin] = c_watsour
elseif data[vin] == c_air
or data[vin] == c_apple
or data[vin] == c_leaves then
data[vin] = c_watsour
end
if data[vis] == c_tree then
highlandpools_remtree(x, yasurf, z - 1, area, data)
data[visd] = c_watsour
elseif data[vis] == c_air
or data[vis] == c_apple
or data[vis] == c_leaves then
data[vis] = c_watsour
end
end
end
end
if flab then
break
end
end
if flab then
break
end
end
if flab then -- erase water from this y level
for z = z0, z1 do
for x = x0, x1 do
local vi = area:index(x, yasurf, z)
if data[vi] == c_watsour then
data[vi] = c_air
end
end
end
else -- flow downwards add dirt
for z = z0, z1 do
for x = x0, x1 do
local vi = area:index(x, yasurf, z)
if data[vi] == c_watsour then
for y = yasurf - 1, y0, -1 do
local viu = area:index(x, y, z)
if data[viu] == c_air then
data[viu] = c_watsour
elseif data[viu] == c_grass then
data[viu] = c_dirt
break
else
break
end
end
end
end
end
end
end
end
end
vm:set_data(data)
vm:set_lighting({day=0, night=0})
vm:calc_lighting()
vm:write_to_map(data)
local chugent = math.ceil((os.clock() - t1) * 1000)
-- print ("[highlandpools] time "..chugent.." ms")
end)