mirror of
https://git.minetest.land/VoxeLibre/VoxeLibre.git
synced 2024-11-30 06:21:05 +01:00
91 lines
3.5 KiB
Lua
91 lines
3.5 KiB
Lua
-------------------------------------------------------------------------------
|
|
-- generate paths between buildings
|
|
-------------------------------------------------------------------------------
|
|
function settlements.paths(settlement_info)
|
|
local starting_point
|
|
local end_point
|
|
local distance
|
|
--for k,v in pairs(settlement_info) do
|
|
starting_point = settlement_info[1]["pos"]
|
|
for o,p in pairs(settlement_info) do
|
|
|
|
end_point = settlement_info[o]["pos"]
|
|
if starting_point ~= end_point
|
|
then
|
|
-- loop until end_point is reched (distance == 0)
|
|
while true do
|
|
|
|
-- define surrounding pos to starting_point
|
|
local north_p = {x=starting_point.x+1, y=starting_point.y, z=starting_point.z}
|
|
local south_p = {x=starting_point.x-1, y=starting_point.y, z=starting_point.z}
|
|
local west_p = {x=starting_point.x, y=starting_point.y, z=starting_point.z+1}
|
|
local east_p = {x=starting_point.x, y=starting_point.y, z=starting_point.z-1}
|
|
-- measure distance to end_point
|
|
local dist_north_p_to_end = math.sqrt(
|
|
((north_p.x - end_point.x)*(north_p.x - end_point.x))+
|
|
((north_p.z - end_point.z)*(north_p.z - end_point.z))
|
|
)
|
|
local dist_south_p_to_end = math.sqrt(
|
|
((south_p.x - end_point.x)*(south_p.x - end_point.x))+
|
|
((south_p.z - end_point.z)*(south_p.z - end_point.z))
|
|
)
|
|
local dist_west_p_to_end = math.sqrt(
|
|
((west_p.x - end_point.x)*(west_p.x - end_point.x))+
|
|
((west_p.z - end_point.z)*(west_p.z - end_point.z))
|
|
)
|
|
local dist_east_p_to_end = math.sqrt(
|
|
((east_p.x - end_point.x)*(east_p.x - end_point.x))+
|
|
((east_p.z - end_point.z)*(east_p.z - end_point.z))
|
|
)
|
|
-- evaluate which pos is closer to the end_point
|
|
if dist_north_p_to_end <= dist_south_p_to_end and
|
|
dist_north_p_to_end <= dist_west_p_to_end and
|
|
dist_north_p_to_end <= dist_east_p_to_end
|
|
then
|
|
starting_point = north_p
|
|
distance = dist_north_p_to_end
|
|
|
|
elseif dist_south_p_to_end <= dist_north_p_to_end and
|
|
dist_south_p_to_end <= dist_west_p_to_end and
|
|
dist_south_p_to_end <= dist_east_p_to_end
|
|
then
|
|
starting_point = south_p
|
|
distance = dist_south_p_to_end
|
|
|
|
elseif dist_west_p_to_end <= dist_north_p_to_end and
|
|
dist_west_p_to_end <= dist_south_p_to_end and
|
|
dist_west_p_to_end <= dist_east_p_to_end
|
|
then
|
|
starting_point = west_p
|
|
distance = dist_west_p_to_end
|
|
|
|
elseif dist_east_p_to_end <= dist_north_p_to_end and
|
|
dist_east_p_to_end <= dist_south_p_to_end and
|
|
dist_east_p_to_end <= dist_west_p_to_end
|
|
then
|
|
starting_point = east_p
|
|
distance = dist_east_p_to_end
|
|
end
|
|
-- find surface of new starting point
|
|
local surface_point, surface_mat = settlements.find_surface(starting_point)
|
|
-- replace surface node with mcl_core:grass_path
|
|
if surface_point
|
|
then
|
|
if surface_mat == "mcl_core:sand" or surface_mat == "mcl_core:redsand" then
|
|
minetest.swap_node(surface_point,{name="mcl_core:sandstonesmooth2"})
|
|
else
|
|
minetest.swap_node(surface_point,{name="mcl_core:grass_path"})
|
|
end
|
|
-- don't set y coordinate, surface might be too low or high
|
|
starting_point.x = surface_point.x
|
|
starting_point.z = surface_point.z
|
|
end
|
|
if distance <= 1 or
|
|
starting_point == end_point
|
|
then
|
|
break
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|