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Code Issues Releases Activity

Moved poisson rng to utils, fixed a potential nil reference and fixed poison typo

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This commit is contained in:
Maik Wild 2017-11-15 13:41:34 +01:00
parent 23a78b468e
commit 10d1b0ebe3
2 changed files with 8 additions and 6 deletions
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7
locale/gen_combined/grilledham_map_gen/map_gen.lua
View File

@ -1,5 +1,5 @@
require("locale.gen_combined.grilledham_map_gen.builders")
require("locale.gen_shared.poisson")
require("locale.utils.poisson")
local Thread = require "locale.utils.Thread"
@ -216,7 +216,7 @@ function check_decorative(tile, x, y)
for _,e in ipairs(options) do
name = e[1]
high_roll = e[2]
if poison_rng_next(high_roll / 2 ) == 1 then
if poisson_rng_next(high_roll / 2 ) == 1 then
table.insert(tile_decoratives, {name=name, amount=1, position={x,y}})
end
end
@ -323,11 +323,10 @@ function check_entities(tile, x, y)
for _,e in ipairs(options) do
name = e[1]
high_roll = e[2]
if poison_rng_next( high_roll / 2 ) == 1 then
if poisson_rng_next( high_roll / 2 ) == 1 then
table.insert(tile_entity_list, {name=name, position={x,y}})
end
end
return tile_entity_list
end

7
locale/gen_shared/poisson.lua → locale/utils/poisson_rng.lua
View File

@ -1,3 +1,5 @@
--Author: Valansch
local function generate_pmf_chart(l)
chart = {[0] = math.exp(-l)}
for k=1,(l*2 + 1) do
@ -15,13 +17,14 @@ local function generate_poisson_set(l, n) --n defines the resolution
table.insert(set,x)
end
end
set._n = #set
return set
end
global.poisson_set = {}
function poison_rng_next(l)
function poisson_rng_next(l)
if not global.poisson_set[l] then
global.poisson_set[l] = generate_poisson_set(l, 1000)
end
return global.poisson_set[l][math.random(1000)]
return global.poisson_set[l][math.random(global.poisson_set[l]._n)]
end