forked from MineClone5/MineClone5
146 lines
4.3 KiB
Lua
146 lines
4.3 KiB
Lua
minetest.register_entity(":__builtin:falling_node", {
|
|
initial_properties = {
|
|
visual = "wielditem",
|
|
visual_size = {x = 0.667, y = 0.667},
|
|
textures = {},
|
|
physical = true,
|
|
is_visible = false,
|
|
collide_with_objects = false,
|
|
collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
|
|
},
|
|
|
|
node = {},
|
|
meta = {},
|
|
|
|
set_node = function(self, node, meta)
|
|
self.node = node
|
|
self.meta = meta or {}
|
|
self.object:set_properties({
|
|
is_visible = true,
|
|
textures = {node.name},
|
|
})
|
|
end,
|
|
|
|
get_staticdata = function(self)
|
|
local ds = {
|
|
node = self.node,
|
|
meta = self.meta,
|
|
}
|
|
return minetest.serialize(ds)
|
|
end,
|
|
|
|
on_activate = function(self, staticdata)
|
|
self.object:set_armor_groups({immortal = 1})
|
|
|
|
local ds = minetest.deserialize(staticdata)
|
|
if ds and ds.node then
|
|
self:set_node(ds.node, ds.meta)
|
|
elseif ds then
|
|
self:set_node(ds)
|
|
elseif staticdata ~= "" then
|
|
self:set_node({name = staticdata})
|
|
end
|
|
end,
|
|
|
|
on_step = function(self, dtime)
|
|
-- Set gravity
|
|
local acceleration = self.object:getacceleration()
|
|
if not vector.equals(acceleration, {x = 0, y = -10, z = 0}) then
|
|
self.object:setacceleration({x = 0, y = -10, z = 0})
|
|
end
|
|
-- Turn to actual node when colliding with ground, or continue to move
|
|
local pos = self.object:getpos()
|
|
|
|
-- Portal check
|
|
local np = {x = pos.x, y = pos.y + 0.3, z = pos.z}
|
|
local n2 = minetest.get_node(np)
|
|
if n2.name == "mcl_portals:portal_end" then
|
|
-- TODO: Teleport falling node.
|
|
self.object:remove()
|
|
return
|
|
end
|
|
|
|
-- Position of bottom center point
|
|
local bcp = {x = pos.x, y = pos.y - 0.7, z = pos.z}
|
|
-- Avoid bugs caused by an unloaded node below
|
|
local bcn = minetest.get_node_or_nil(bcp)
|
|
local bcd = bcn and minetest.registered_nodes[bcn.name]
|
|
|
|
-- TODO: At this point, we did 2 get_nodes in 1 tick.
|
|
-- Figure out how to improve that (if it is a problem).
|
|
|
|
if bcn and (not bcd or bcd.walkable or
|
|
(minetest.get_item_group(self.node.name, "float") ~= 0 and
|
|
bcd.liquidtype ~= "none")) then
|
|
if bcd and bcd.leveled and
|
|
bcn.name == self.node.name then
|
|
local addlevel = self.node.level
|
|
if not addlevel or addlevel <= 0 then
|
|
addlevel = bcd.leveled
|
|
end
|
|
if minetest.add_node_level(bcp, addlevel) == 0 then
|
|
self.object:remove()
|
|
return
|
|
end
|
|
elseif bcd and bcd.buildable_to and
|
|
(minetest.get_item_group(self.node.name, "float") == 0 or
|
|
bcd.liquidtype == "none") then
|
|
minetest.remove_node(bcp)
|
|
return
|
|
end
|
|
local nd = minetest.registered_nodes[n2.name]
|
|
if n2.name == "mcl_portals:portal_end" then
|
|
-- TODO: Teleport falling node.
|
|
|
|
elseif (nd and nd.buildable_to == true) or minetest.get_item_group(self.node.name, "crush_after_fall") ~= 0 then
|
|
-- Replace destination node if it's buildable to
|
|
minetest.remove_node(np)
|
|
-- Run script hook
|
|
for _, callback in pairs(minetest.registered_on_dignodes) do
|
|
callback(np, n2)
|
|
end
|
|
if minetest.registered_nodes[self.node.name] then
|
|
minetest.add_node(np, self.node)
|
|
if self.meta then
|
|
local meta = minetest.get_meta(np)
|
|
meta:from_table(self.meta)
|
|
end
|
|
end
|
|
else
|
|
-- Drop the *falling node* as an item if the destination node is NOT buildable to
|
|
local drops = minetest.get_node_drops(self.node.name, "")
|
|
for _, dropped_item in pairs(drops) do
|
|
minetest.add_item(np, dropped_item)
|
|
end
|
|
end
|
|
self.object:remove()
|
|
minetest.check_for_falling(np)
|
|
return
|
|
end
|
|
local vel = self.object:getvelocity()
|
|
-- Fix position if entity does not move
|
|
if vector.equals(vel, {x = 0, y = 0, z = 0}) then
|
|
local npos = vector.round(self.object:getpos())
|
|
local npos2 = table.copy(npos)
|
|
npos2.y = npos2.y - 2
|
|
local lownode = minetest.get_node(npos2)
|
|
-- Special check required for fences, because of their overhigh collision box.
|
|
if minetest.get_item_group(lownode.name, "fence") == 1 then
|
|
-- Instantly stop the node if it is above a fence. This is needed
|
|
-- because the falling node collides early with a fence node.
|
|
-- Hacky, because the falling node will teleport a short distance, instead
|
|
-- of smoothly fall on the fence post.
|
|
local npos3 = table.copy(npos)
|
|
npos3.y = npos3.y - 1
|
|
minetest.add_node(npos3, self.node)
|
|
self.object:remove()
|
|
minetest.check_for_falling(npos3)
|
|
return
|
|
else
|
|
-- Normal position fix (expected case)
|
|
self.object:setpos(npos)
|
|
end
|
|
end
|
|
end
|
|
})
|