215 lines
6.3 KiB
Lua
215 lines
6.3 KiB
Lua
local modname = minetest.get_current_modname()
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local S = minetest.get_translator(modname)
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local modpath = minetest.get_modpath(modname)
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dofile(modpath.."/wisp.lua")
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local gas_desc
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local gas_usage
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local seep_desc
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local seep_usage
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if minetest.get_modpath("doc") then
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gas_desc = S("Gaseous hydrocarbons formed from the detritus of long dead plants and animals processed by heat and pressure deep within the earth.")
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gas_usage = S("Gas is highly hazardous. Heavier than air, it pools in deep caverns and asphyxiates the unwary.")
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if minetest.get_modpath("tnt") then
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gas_usage = gas_usage .. " " .. S("When exposed to air and an ignition source it can produce a deadly explosion.")
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end
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seep_desc = S("Some coal deposits have cracks that seep a steady flow of mine gas.")
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seep_usage = S("Mining out such a deposit seals the crack.")
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end
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minetest.register_alias("oil:gas", "mine_gas:gas")
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minetest.register_alias("oil:gas_seep", "mine_gas:gas_seep")
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minetest.register_node("mine_gas:gas", {
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description = S("Mine Gas"),
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_doc_items_longdesc = gas_desc,
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_doc_items_usagehelp = gas_usage,
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walkable = false,
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pointable = false,
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diggable = false,
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is_ground_content = false,
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buildable_to = true,
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drawtype = "glasslike",
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drowning = 1,
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post_effect_color = {a = 20, r = 20, g = 20, b = 250},
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tiles = {"mine_gas.png^[opacity:28"},
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use_texture_alpha = "blend",
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groups = {not_in_creative_inventory=1, ropes_can_extend_into=1, not_solid=1, not_opaque=1},
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paramtype = "light",
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drop = {},
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sunlight_propagates = true,
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--on_blast = function() end, -- unaffected by explosions
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})
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minetest.register_node("mine_gas:gas_seep", {
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description = S("Gas Seep"),
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_doc_items_longdesc = seep_desc,
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_doc_items_usagehelp = seep_usage,
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tiles = {df_dependencies.texture_stone.."^"..df_dependencies.texture_mineral_coal.."^[combine:16x80:0,-16=crack_anylength.png"},
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groups = {cracky = 3, pickaxey=1, building_block=1, material_stone=1},
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drop = df_dependencies.node_name_coal_lump,
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sounds = df_dependencies.sound_stone(),
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is_ground_content = true,
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_mcl_blast_resistance = 5,
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_mcl_hardness = 3,
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})
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minetest.register_on_dignode(function(pos, oldnode, digger)
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if minetest.get_item_group(oldnode.name, "digtron") > 0 then
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-- skip digtron moved nodes
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return;
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end
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local np = minetest.find_node_near(pos, 1,{"mine_gas:gas"})
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if np ~= nil then
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minetest.set_node(pos, {name = "mine_gas:gas"})
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return
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end
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end)
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local directions = {
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{x=1, y=0, z=0},
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{x=-1, y=0, z=0},
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{x=0, y=0, z=1},
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{x=0, y=0, z=-1},
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}
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local gas_node = {name="mine_gas:gas"}
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minetest.register_abm({
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label = "mine_gas:gas movement",
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nodenames = {"mine_gas:gas"},
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neighbors = {"group:liquid", "air"},
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interval = 1.0,
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chance = 1,
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catch_up = true,
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action = function(pos, node)
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local next_pos = {x=pos.x, y=pos.y+1, z=pos.z}
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local next_node = minetest.get_node(next_pos)
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if minetest.get_item_group(next_node.name, "liquid") > 0 then
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minetest.swap_node(next_pos, gas_node)
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minetest.swap_node(pos, next_node)
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else
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next_pos.y = pos.y-1
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next_node = minetest.get_node(next_pos)
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if next_node.name == "air" then
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minetest.swap_node(next_pos, gas_node)
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minetest.swap_node(pos, next_node)
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else
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local dir = directions[math.random(1,4)]
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local next_pos = vector.add(pos, dir)
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local next_node = minetest.get_node(next_pos)
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if next_node.name == "air" or minetest.get_item_group(next_node.name, "liquid") > 0 then
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if next_node.name == "air" or math.random() < 0.5 then -- gas never "climbs" above air.
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minetest.swap_node(next_pos, gas_node)
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minetest.swap_node(pos, next_node)
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else
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-- this can get gas to rise up out of the surface of liquid, preventing it from forming a permanent hole.
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next_pos.y = next_pos.y + 1
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next_node = minetest.get_node(next_pos)
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if next_node.name == "air" then
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minetest.swap_node(next_pos, gas_node)
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minetest.swap_node(pos, next_node)
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end
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end
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end
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end
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end
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end,
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})
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local soundfile_cool_lava = df_dependencies.soundfile_cool_lava
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minetest.register_abm({
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label = "mine_gas:gas snuffing torches",
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nodenames = {"group:torch"},
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neighbors = {"mine_gas:gas"},
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interval = 1.0,
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chance = 1,
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catch_up = true,
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action = function(pos, node)
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if not minetest.find_node_near(pos, 1, "air") then
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local torch_node = minetest.get_node(pos)
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local drops = minetest.get_node_drops(torch_node.name, "")
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for _, dropped_item in pairs(drops) do
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minetest.add_item(pos, dropped_item)
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end
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minetest.set_node(pos, {name="mine_gas:gas"})
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minetest.sound_play(
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soundfile_cool_lava,
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{pos = pos, max_hear_distance = 16, gain = 0.1}
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)
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end
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end,
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})
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local tnt_boom = df_dependencies.tnt_boom
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if tnt_boom then
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minetest.register_abm({
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label = "mine_gas:gas ignition",
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nodenames = {"group:torch", "group:igniter", "group:fire"}, -- checking for ignition sources because there will be fewer than there are gas nodes
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neighbors = {"mine_gas:gas"},
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interval = 1.0,
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chance = 1,
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catch_up = true,
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action = function(pos, node)
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if minetest.find_node_near(pos, 1, "air") then
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tnt_boom(pos, {radius=1, damage_radius=6})
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-- One in a hundred explosions will spawn a gas wisp
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if math.random() < 0.01 then
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minetest.set_node(pos, {name="mine_gas:gas_wisp"})
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end
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end
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end,
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})
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end
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local orthogonal = {
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{x=0,y=0,z=1},
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{x=0,y=1,z=0},
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{x=1,y=0,z=0},
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{x=0,y=0,z=-1},
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{x=0,y=-1,z=0},
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{x=-1,y=0,z=0},
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}
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local stone_with_coal = df_dependencies.node_name_stone_with_coal
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minetest.register_lbm({
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label = "shut down gas seeps near lava",
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name = "mine_gas:shut_down_lava_adjacent",
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nodenames = {"mine_gas:gas_seep"},
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run_at_every_load = true,
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action = function(pos, node)
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minetest.after(math.random()*60, function()
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if minetest.find_node_near(pos, 30, "group:lava") then
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minetest.set_node(pos, {name=stone_with_coal})
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end
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end)
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end,
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})
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minetest.register_abm({
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label = "mine_gas:gas seep",
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nodenames = {"mine_gas:gas_seep"},
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neighbors = {"air"},
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interval = 1.0,
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chance = 1,
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catch_up = true,
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action = function(pos, node)
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local target_pos = vector.add(pos,orthogonal[math.random(1,6)])
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if minetest.get_node(target_pos).name == "air" then
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minetest.swap_node(target_pos, {name="mine_gas:gas"})
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if math.random() < 0.5 then
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minetest.sound_play(
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"mine_gas_seep_hiss",
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{pos = pos, max_hear_distance = 8, gain = 0.05}
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)
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end
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end
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end,
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}) |