From 6eb4914dd1691ad9e4b1d9942d30e707d1e9a6ce Mon Sep 17 00:00:00 2001 From: Auke Kok Date: Wed, 13 Jan 2016 20:43:28 -0800 Subject: [PATCH] Tweak some stuff, now it's somewhat behaving. --- init.lua | 47 +++++++++++++++++++++++++++++------------------ 1 file changed, 29 insertions(+), 18 deletions(-) diff --git a/init.lua b/init.lua index 520b11b..b9f6988 100644 --- a/init.lua +++ b/init.lua @@ -14,7 +14,8 @@ local lightning = {} lightning.interval_low = 17 lightning.interval_high = 503 -lightning.range = 200 +lightning.range_h = 100 +lightning.range_v = 50 lightning.size = 100 local rng = PcgRandom(32321123312123) @@ -39,25 +40,27 @@ lightning.strike = function() return end - pos.x = math.floor(pos.x - (lightning.range / 2) + rng:next(1, lightning.range)) - pos.y = pos.y + (lightning.range / 2) - pos.z = math.floor(pos.z - (lightning.range / 2) + rng:next(1, lightning.range)) + pos.x = math.floor(pos.x - (lightning.range_h / 2) + rng:next(1, lightning.range_h)) + pos.y = pos.y + (lightning.range_v / 2) + pos.z = math.floor(pos.z - (lightning.range_h / 2) + rng:next(1, lightning.range_h)) - local b, pos2 = minetest.line_of_sight(pos, {x = pos.x, y = pos.y - lightning.range, z = pos.z}, 1) + local b, pos2 = minetest.line_of_sight(pos, {x = pos.x, y = pos.y - lightning.range_v, z = pos.z}, 1) -- nothing but air found if b then return end + local n = minetest.get_node({x = pos2.x, y = pos2.y - 1/2, z = pos2.z}) + if n.name == "air" or n.name == "ignore" then + return + end + minetest.add_particlespawner({ amount = 1, time = 0.2, -- make it hit the top of a block exactly with the bottom - minpos = { x = pos2.x, y = pos2.y + (lightning.size / 2) + 1/2, z = pos2.z }, - maxpos = { x = pos2.x, y = pos2.y + (lightning.size / 2) + 1/2, z = pos2.z }, - -- the particle will be centered above the pos2 position but we - -- want it to hit the node on the ground - -- down really fast at the ground + minpos = {x = pos2.x, y = pos2.y + (lightning.size / 2) + 1/2, z = pos2.z }, + maxpos = {x = pos2.x, y = pos2.y + (lightning.size / 2) + 1/2, z = pos2.z }, minvel = {x = 0, y = 0, z = 0}, maxvel = {x = 0, y = 0, z = 0}, minacc = {x = 0, y = 0, z = 0}, @@ -78,21 +81,29 @@ lightning.strike = function() -- set the air node above it on fire pos2.y = pos2.y + 1/2 - if minetest.get_node(pos2).name == "air" then - minetest.set_node(pos2, {name = "fire:basic_flame"}) + if minetest.get_item_group(minetest.get_node({x = pos2.x, y = pos2.y - 1, z = pos2.z}).name, "liquid") < 1 then + if minetest.get_node(pos2).name == "air" then + -- only 1/4 of the time, something is changed + if rng:next(1,4) > 1 then + return + end + -- very rarely, cause a massive forest fire (100*4*250 = 1/100000 seconds) + if rng:next(1,100) == 1 then + minetest.set_node(pos2, {name = "fire:basic_flame"}) + else + minetest.set_node(pos2, {name = "fire:permanent_flame"}) + end + end end -- perform block modifications pos2.y = pos2.y - 1 local n = minetest.get_node(pos2) - if n.name == "default:tree" or n.name == "default:jungletree" or n.name == "default:pine_tree" or - n.name == "default:acacia_tree" or n.name == "default:acacia_tree" then + if minetest.get_item_group(n.name, "tree") > 0 then minetest.set_node(pos2, { name = "default:coalblock"}) - elseif n.name == "default:sand" or n.name == "default:desert_sand" then + elseif minetest.get_item_group(n.name, "sand") > 0 then minetest.set_node(pos2, { name = "default:glass"}) - elseif string.find(n.name, "default:dirt") then - minetest.set_node(pos2, { name = "default:gravel"}) - elseif string.find(n.name, "default:soil") then + elseif minetest.get_item_group(n.name, "soil") > 0 then minetest.set_node(pos2, { name = "default:gravel"}) end end