From 1e2343d649f328c79b31e46e69be95d788d05411 Mon Sep 17 00:00:00 2001 From: Wuzzy Date: Thu, 2 Nov 2017 23:21:04 +0100 Subject: [PATCH] Make floating vines decay Also destroy them immediately with leafdecay and when try try to grow but notice they have been floating the whole time. --- mods/ITEMS/mcl_core/functions.lua | 76 ++++++++++++++++++++++++++++- mods/ITEMS/mcl_core/nodes_climb.lua | 17 ++----- 2 files changed, 78 insertions(+), 15 deletions(-) diff --git a/mods/ITEMS/mcl_core/functions.lua b/mods/ITEMS/mcl_core/functions.lua index 9e57b22e..c098f3b7 100644 --- a/mods/ITEMS/mcl_core/functions.lua +++ b/mods/ITEMS/mcl_core/functions.lua @@ -934,6 +934,13 @@ minetest.register_abm({ chance = 4, action = function(pos, node, active_object_count, active_object_count_wider) + -- First of all, check if we are even supported, otherwise, let's die! + if not mcl_core.check_vines_supported(pos, node) then + minetest.remove_node(pos) + core.check_for_falling(pos) + return + end + local neighbor_offsets = { { x=1, y=0, z=0 }, { x=-1, y=0, z=0 }, @@ -1010,7 +1017,9 @@ minetest.register_abm({ mcl_core.supports_vines = function(nodename) local def = minetest.registered_nodes[nodename] -- Rules: 1) walkable 2) full cube - return def.walkable and ((not def.node_box) or def.node_box.type == "regular") + return def.walkable and + (def.node_box == nil or def.node_box.type == "regular") and + (def.collision_box == nil or def.collision_box.type == "regular") end -- Leaf Decay @@ -1098,10 +1107,75 @@ minetest.register_abm({ -- Remove node minetest.remove_node(p0) core.check_for_falling(p0) + + -- Kill depending vines immediately to skip the vines decay delay + local surround = { + { x = 0, y = 0, z = -1 }, + { x = 0, y = 0, z = 1 }, + { x = -1, y = 0, z = 0 }, + { x = 1, y = 0, z = 0 }, + { x = 0, y = -1, z = -1 }, + } + for s=1, #surround do + local spos = vector.add(p0, surround[s]) + local maybe_vine = minetest.get_node(spos) + local surround_inverse = vector.multiply(surround[s], -1) + if maybe_vine.name == "mcl_core:vine" and (not mcl_core.check_vines_supported(spos, maybe_vine)) then + minetest.remove_node(spos) + core.check_for_falling(spos) + end + end end end }) +-- Remove vines which are not supported by anything, similar to leaf decay. +--[[ TODO: Vines are supposed to die immediately when they supporting block is destroyed. +But doing this in Minetest would be too complicated / hacky. This vines decay is a simple +way to make sure that all floating vines are destroyed eventually. ]] +minetest.register_abm({ + label = "Vines decay", + nodenames = {"mcl_core:vine"}, + neighbors = {"air"}, + -- A low interval and a high inverse chance spreads the load + interval = 3, + chance = 5, + action = function(p0, node, _, _) + if not mcl_core.check_vines_supported(p0, node) then + -- Vines must die! + minetest.remove_node(p0) + -- Just in case a falling node happens to float above vines + core.check_for_falling(p0) + end + end +}) + +--[[ Call this for vines nodes only. +Given the pos and node of a vines node, this returns true if the vines are supported +and false if the vines are currently floating. +Vines are considered “supported” if they face a walkable+solid block or “hang” from a vines node above. ]] +function mcl_core.check_vines_supported(pos, node) + local supported = false + local dir = minetest.wallmounted_to_dir(node.param2) + local pos1 = vector.add(pos, dir) + local node_neighbor = minetest.get_node(pos1) + -- Check if vines are attached to a solid block. + -- If ignore, we assume its solid. + if node_neighbor.name == "ignore" or mcl_core.supports_vines(node_neighbor.name) then + supported = true + elseif dir.y == 0 then + -- Vines are not attached, now we check if the vines are “hanging” below another vines block + -- of equal orientation. + local pos2 = vector.add(pos, {x=0, y=1, z=0}) + local node2 = minetest.get_node(pos2) + -- Again, ignore means we assume its supported + if node2.name == "ignore" or (node2.name == "mcl_core:vine" and node2.param2 == node.param2) then + supported = true + end + end + return supported +end + ---- FUNCTIONS FOR SNOWED NODES ---- -- These are nodes which change their appearence when they are below a snow cover -- and turn back into “normal” when the snow cover is removed. diff --git a/mods/ITEMS/mcl_core/nodes_climb.lua b/mods/ITEMS/mcl_core/nodes_climb.lua index fc3d7b93..886bb171 100644 --- a/mods/ITEMS/mcl_core/nodes_climb.lua +++ b/mods/ITEMS/mcl_core/nodes_climb.lua @@ -118,14 +118,9 @@ minetest.register_node("mcl_core:vine", { end end - -- Only allow placement on solid nodes - if (not groups) or (not groups.solid) then - return itemstack - end - -- Only place on full cubes if not mcl_core.supports_vines(node.name) then - return + return itemstack end local above = pointed_thing.above @@ -150,14 +145,8 @@ minetest.register_node("mcl_core:vine", { after_destruct = function(pos, oldnode) local below = {x=pos.x, y=pos.y-1, z=pos.z} local belownode = minetest.get_node(below) - if belownode.name == oldnode.name and belownode.param2 == belownode.param2 then - local dir = minetest.wallmounted_to_dir(belownode.param2) - local support = vector.add(below, dir) - local supportnode = minetest.get_node(support) - -- supporting block = walkable + solid - if not minetest.registered_nodes[supportnode.name].walkable and minetest.get_item_group(supportnode.name, "solid") ~= 1 then - minetest.remove_node(below) - end + if belownode.name == oldnode.name and mcl_core.check_vines_supported(below, belownode) then + minetest.remove_node(below) end end,