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tsm_railcorridors
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Attempt up to 10 times to generate rail system

master
Wuzzy 2019-02-13 19:10:46 +01:00
parent 5a9283bc40
commit ae2fd8cb4b
1 changed files with 19 additions and 8 deletions
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27
init.lua
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@ -893,7 +893,7 @@ end
-- Start generation of a rail corridor system
-- main_cave_coords is the center of the floor of the dirt room, from which
-- all corridors expand.
local function place_corridors(main_cave_coords, psra)
local function start_corridor_system(main_cave_coords, psra)
--[[ Start building in the ground. Prevents corridors starting
in mid-air or in liquids. ]]
if not IsGround(main_cave_coords) then
@ -1022,14 +1022,25 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
-- We can't use the mapgen seed as this would make the algorithm depending on the order the mapblocks generate.
InitRandomizer(blockseed)
if minp.y < height_max and maxp.y > height_min and pr:next() < probability_railcaves_in_chunk then
-- Get semi-random height in chunk
-- Keep some distance from the upper/lower mapblock limits
local buffer = 5
local y = pr:next(minp.y + buffer, maxp.y - buffer)
y = math.floor(math.max(height_min + buffer, math.min(height_max - buffer, y)))
-- Mid point of the chunk
local p = {x=minp.x+math.floor((maxp.x-minp.x)/2), y=y, z=minp.z+math.floor((maxp.z-minp.z)/2)}
-- Start placing corridors, beginning with a dirt room
place_corridors(p, pr)
-- Do up to 10 tries to start a corridor system
for t=1,10 do
-- Get semi-random height in chunk
local y = pr:next(minp.y + buffer, maxp.y - buffer)
y = math.floor(math.max(height_min + buffer, math.min(height_max - buffer, y)))
-- Mid point of the chunk
local p = {x=minp.x+math.floor((maxp.x-minp.x)/2), y=y, z=minp.z+math.floor((maxp.z-minp.z)/2)}
-- Start corridor system at p. Might fail if p is in open air
minetest.log("verbose", "[tsm_railcorridors] Attempting to start rail corridor system at "..minetest.pos_to_string(p))
if start_corridor_system(p, pr) then
minetest.log("info", "[tsm_railcorridors] Generated rail corridor system at "..minetest.pos_to_string(p))
break
else
minetest.log("info", "[tsm_railcorridors] Rail corridor system generation attempt failed at "..minetest.pos_to_string(p).. " (try "..t..")")
end
end
end
end)