Sokomine/simple_villages
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do not try to place nodes outside current mapchunk

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Sokomine 2020-04-26 22:11:42 +02:00
parent 74235198ce
commit 616cc31d3d
1 changed files with 30 additions and 5 deletions
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35
init.lua
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@ -7,6 +7,11 @@ walkable_road = {}
-- TODO: allow for roads in x direction instead of z direction as well
-- paths are not built below min_path_height; bridges (2 nodes above that
-- level) are used in such a case
-- bridge pillars and tunnel lamps are limited to the current mapchunk
-- in height (a pillar in midair does not look more strange than
-- a pillar stretching too far up); if necessary, additional
-- parallel lines are added below the bridge_side_a and bridge_side_b
-- lines
-- the material for all nodes (normal path, slabs, stairs, bridge, tunnel)
-- is contained in the table "material"
-- trees: the entire trunk standing on the path is removed, but
@ -23,6 +28,10 @@ walkable_road.build_bridge = function(start_x, path_wide, height, start_z, end_z
if(height < min_height) then
height = min_height
end
-- do not build a bridge if its floor does not fit into the current mapchunk
if(height < minp.y or height > minp.y + chunksize) then
return
end
for j=start_z, end_z do
-- note: the bridge floor is set when the path as such is placed
-- trees at the side that hold the fences
@ -43,22 +52,34 @@ walkable_road.build_bridge = function(start_x, path_wide, height, start_z, end_z
-- TODO: use cobble when in water?
if(material.bridge_pillar
and (j-start_z)%(2*(path_wide+2)) == (path_wide+2)) then
local h_base = heightmap[ ((j-minp.z)*chunksize) + (start_x-1-minp.x) ]
for l=h_base, height-1 do
local h_base_a = heightmap[ ((j-minp.z)*chunksize) + (start_x-1-minp.x) ]
for l=math.max(minp.y, h_base_a), height-1 do
minetest.set_node({x=start_x-1,y=l,z=j}, material.bridge_pillar)
-- horizontal connections between the pillars
if(material.bridge_pillar_cross and l>0 and l%3==0) then
if(material.bridge_pillar_cross and l>0 and l%3==0 and l>minp.y) then
for m=start_x, start_x+path_wide do
minetest.set_node({x=m,y=l,z=j}, material.bridge_pillar_cross)
end
end
end
-- if we are at the mapchunk border, add additional horizontal connections in
-- order to make the bridge look less cut off
if(h_base_a < minp.y) then
for o = -4 * path_wide, 4 * path_wide do
minetest.set_node({x=start_x-1,y=minp.y,z=j+o}, material.bridge_side_a)
end
end
-- second pillar
h_base = heightmap[ ((j-minp.z)*chunksize) + (start_x+path_wide-minp.x) ]
for l=h_base, height-1 do
local h_base_b = heightmap[ ((j-minp.z)*chunksize) + (start_x+path_wide-minp.x) ]
for l=math.max(minp.y, h_base_b), height-1 do
minetest.set_node({x=start_x+path_wide,y=l,z=j}, material.bridge_pillar)
end
if(h_base_b < minp.y) then
for o = -4 * path_wide, 4 * path_wide do
minetest.set_node({x=start_x+path_wide,y=minp.y,z=j+o}, material.bridge_side_a)
end
end
end
end
end
@ -67,6 +88,10 @@ end
-- a tunnel is (for now) a bit more simple;
-- the tunnel itself will be carved out with air later on in the process when the road is made walkable
walkable_road.build_tunnel = function(start_x, path_wide, height, start_z, end_z, heightmap, minp, chunksize, material )
-- only place the lamps if we are still (roughly) inside the current mapchunk
if(height+4 < minp.y or height+4 > minp.y + chunksize) then
return
end
for j=start_z, end_z do
-- add some lamps so that the tunnel is not too dark
-- (but only if we are still below the surface)