From 85c058125cce036d50b6a071b006d84353354897 Mon Sep 17 00:00:00 2001 From: Wuzzy Date: Wed, 18 Dec 2019 15:06:35 +0100 Subject: [PATCH] Add kelp growth --- mods/ITEMS/mcl_ocean/kelp.lua | 85 +++++++++++++++++++++++++++++------ 1 file changed, 71 insertions(+), 14 deletions(-) diff --git a/mods/ITEMS/mcl_ocean/kelp.lua b/mods/ITEMS/mcl_ocean/kelp.lua index d410a4aa0..1b41183ab 100644 --- a/mods/ITEMS/mcl_ocean/kelp.lua +++ b/mods/ITEMS/mcl_ocean/kelp.lua @@ -9,6 +9,38 @@ local surfaces = { { "gravel", "mcl_core:gravel", 1 }, } +local function get_kelp_top(pos, node) + local size = math.ceil(node.param2 / 16) + local pos_water = table.copy(pos) + pos_water.y = pos_water.y + size + return pos_water, minetest.get_node(pos_water) +end + +local function get_submerged(node_water) + local def_water = minetest.registered_nodes[node_water.name] + -- Submerged in water? + if minetest.get_item_group(node_water.name, "water") then + if def_water.liquidtype == "source" then + return "source" + elseif def_water.liquidtype == "flowing" then + return "flowing" + end + end + return false +end + +local function grow_param2_step(param2, snap_into_grid) + local old_param2 = param2 + param2 = param2 + 16 + if param2 > 240 then + param2 = 240 + end + if snap_into_grid and (param2 % 16 ~= 0) then + param2 = param2 - (param2 % 16) + end + return param2, param2 ~= old_param2 +end + local function kelp_on_place(itemstack, placer, pointed_thing) if pointed_thing.type ~= "node" or not placer then return itemstack @@ -49,15 +81,14 @@ local function kelp_on_place(itemstack, placer, pointed_thing) node_under.name = "mcl_ocean:kelp_gravel" elseif minetest.get_item_group(node_under.name, "kelp") == 1 then -- Place kelp on kelp = grow kelp by 1 node length - if node_under.param2 < 240 then - node_under.param2 = node_under.param2 + 16 - grow_kelp = true - else + node_under.param2, grow_kelp = grow_param2_step(node_under.param2) + if not grow_kelp then return itemstack end else return itemstack end + local submerged = false if grow_kelp then -- Kelp placed on kelp ... -- Kelp can be placed on top of another kelp to make it grow @@ -65,18 +96,13 @@ local function kelp_on_place(itemstack, placer, pointed_thing) -- Placed on side or below node, abort return itemstack end - -- New kelp top must also be submerged in water - local size = math.ceil(node_under.param2 / 16) - minetest.log("error", node_under.param2.."|"..size) - local pos_water = table.copy(pos_under) - pos_water.y = pos_water.y + size - local node_water = minetest.get_node(pos_water) - local def_water = minetest.registered_nodes[node_water.name] - if not (minetest.get_item_group(node_water.name, "water") and def_water.liquidtype == "source") then - -- Not submerged in water, abort + -- New kelp top must also be submerged in water source + local _, top_node = get_kelp_top(pos_under, node_under) + submerged = get_submerged(top_node) + if submerged ~= "source" then + -- Not submerged in water source, abort return itemstack end - else -- New kelp placed ... if pos_under.y >= pos_above.y then @@ -87,6 +113,7 @@ local function kelp_on_place(itemstack, placer, pointed_thing) local g_above_water = minetest.get_item_group(node_above.name, "water") if not (g_above_water ~= 0 and def_above.liquidtype == "source") then return itemstack + -- TODO: Also allow placement into downwards flowing liquid end node_under.param2 = minetest.registered_items[node_under.name].place_param2 or 16 end @@ -235,3 +262,33 @@ minetest.register_craft({ recipe = "mcl_ocean:dried_kelp_block", burntime = 200, }) + +-- Grow kelp +minetest.register_abm({ + label = "Kelp growth", + nodenames = { "group:kelp" }, + interval = 45, + chance = 12, + catch_up = false, + action = function(pos, node, active_object_count, active_object_count_wider) + local grown + -- Grow kelp by 1 node length if it would grow inside water + node.param2, grown = grow_param2_step(node.param2, true) + local top, top_node = get_kelp_top(pos, node) + local submerged = get_submerged(top_node) + if grown then + if submerged == "source" then + -- Liquid source: Grow normally + minetest.set_node(pos, node) + elseif submerged == "flowing" then + -- Flowing liquid: Grow 1 step, but also turn the top node into a liquid source + minetest.set_node(pos, node) + local def_liq = minetest.registered_nodes[top_node.name] + local alt_liq = def_liq and def_liq.liquid_alternative_source + if alt_liq then + minetest.set_node(top, {name=alt_liq}) + end + end + end + end, +})