-- If item_entity_ttl is not set, enity will have default life time
-- Setting it to -1 disables the feature
-local time_to_live = tonumber(core.settings:get("item_entity_ttl"))
-if not time_to_live then
- time_to_live = 900
-end
+local time_to_live = tonumber(core.settings:get("item_entity_ttl")) or 900
+local gravity = tonumber(core.settings:get("movement_gravity")) or 9.81
+
core.register_entity(":__builtin:item", {
initial_properties = {
is_visible = false,
},
- itemstring = '',
+ itemstring = "",
physical_state = true,
+ slippery_state = false,
age = 0,
set_item = function(self, itemstring)
- self.itemstring = itemstring
- local stack = ItemStack(itemstring)
- local count = stack:get_count()
- local max_count = stack:get_stack_max()
- if count > max_count then
- count = max_count
- self.itemstring = stack:get_name().." "..max_count
- end
- local s = 0.2 + 0.1 * (count / max_count)
- local c = s
- local itemtable = stack:to_table()
- local itemname = nil
- if itemtable then
- itemname = stack:to_table().name
- end
+ local stack = ItemStack(itemstring or self.itemstring)
+ self.itemstring = stack:to_string()
+
-- Backwards compatibility: old clients use the texture
-- to get the type of the item
- local item_texture = nil
- local item_type = ""
- if core.registered_items[itemname] then
- item_texture = core.registered_items[itemname].inventory_image
- item_type = core.registered_items[itemname].type
+ local itemname = stack:get_name()
+
+ local max_count = stack:get_stack_max()
+ local count = math.min(stack:get_count(), max_count)
+ local size = 0.2 + 0.1 * (count / max_count)
+
+ if not stack:is_known() then
+ itemname = "unknown"
end
- local prop = {
+
+ self.object:set_properties({
is_visible = true,
visual = "wielditem",
textures = {itemname},
- visual_size = {x = s, y = s},
- collisionbox = {-c, -c, -c, c, c, c},
+ visual_size = {x = size, y = size},
+ collisionbox = {-size, -size, -size, size, size, size},
automatic_rotate = math.pi * 0.5,
- wield_item = itemstring,
- }
- self.object:set_properties(prop)
+ wield_item = self.itemstring,
+ })
+
end,
get_staticdata = function(self)
return core.serialize({
itemstring = self.itemstring,
- always_collect = self.always_collect,
age = self.age,
dropped_by = self.dropped_by
})
local data = core.deserialize(staticdata)
if data and type(data) == "table" then
self.itemstring = data.itemstring
- self.always_collect = data.always_collect
- if data.age then
- self.age = data.age + dtime_s
- else
- self.age = dtime_s
- end
+ self.age = (data.age or 0) + dtime_s
self.dropped_by = data.dropped_by
end
else
end
self.object:set_armor_groups({immortal = 1})
self.object:set_velocity({x = 0, y = 2, z = 0})
- self.object:set_acceleration({x = 0, y = -10, z = 0})
- self:set_item(self.itemstring)
+ self.object:set_acceleration({x = 0, y = -gravity, z = 0})
+ self:set_item()
end,
- -- moves items from this stack to an other stack
- try_merge_with = function(self, own_stack, object, obj)
- -- other item's stack
- local stack = ItemStack(obj.itemstring)
- -- only merge if items are the same
- if own_stack:get_name() == stack:get_name() and
- own_stack:get_meta() == stack:get_meta() and
- own_stack:get_wear() == stack:get_wear() and
- stack:get_free_space() > 0 then
- local overflow = false
- local count = stack:get_count() + own_stack:get_count()
- local max_count = stack:get_stack_max()
- if count > max_count then
- overflow = true
- stack:set_count(max_count)
- count = count - max_count
- own_stack:set_count(count)
- else
- self.itemstring = ''
- stack:set_count(count)
- end
- local pos = object:getpos()
- pos.y = pos.y + (count - stack:get_count()) / max_count * 0.15
- object:moveto(pos, false)
- local s, c
- if not overflow then
- obj.itemstring = stack:to_string()
- s = 0.2 + 0.1 * (count / max_count)
- c = s
- object:set_properties({
- visual_size = {x = s, y = s},
- collisionbox = {-c, -c, -c, c, c, c},
- wield_item = obj.itemstring
- })
- self.object:remove()
- -- merging succeeded
- return true
- else
- s = 0.4
- c = 0.3
- obj.itemstring = stack:to_string()
- object:set_properties({
- visual_size = {x = s, y = s},
- collisionbox = {-c, -c, -c, c, c, c},
- wield_item = obj.itemstring
- })
- s = 0.2 + 0.1 * (count / max_count)
- c = s
- self.itemstring = own_stack:to_string()
- self.object:set_properties({
- visual_size = {x = s, y = s},
- collisionbox = {-c, -c, -c, c, c, c},
- wield_item = self.itemstring
- })
- end
+ try_merge_with = function(self, own_stack, object, entity)
+ if self.age == entity.age then
+ -- Can not merge with itself
+ return false
+ end
+
+ local stack = ItemStack(entity.itemstring)
+ local name = stack:get_name()
+ if own_stack:get_name() ~= name or
+ own_stack:get_meta() ~= stack:get_meta() or
+ own_stack:get_wear() ~= stack:get_wear() or
+ own_stack:get_free_space() == 0 then
+ -- Can not merge different or full stack
+ return false
end
- -- merging didn't succeed
- return false
+
+ local count = own_stack:get_count()
+ local total_count = stack:get_count() + count
+ local max_count = stack:get_stack_max()
+
+ if total_count > max_count then
+ return false
+ end
+ -- Merge the remote stack into this one
+
+ local pos = object:get_pos()
+ pos.y = pos.y + ((total_count - count) / max_count) * 0.15
+ self.object:move_to(pos)
+
+ self.age = 0 -- Handle as new entity
+ own_stack:set_count(total_count)
+ self:set_item(own_stack)
+
+ entity.itemstring = ""
+ object:remove()
+ return true
end,
on_step = function(self, dtime)
self.age = self.age + dtime
if time_to_live > 0 and self.age > time_to_live then
- self.itemstring = ''
+ self.itemstring = ""
self.object:remove()
return
end
- local p = self.object:getpos()
- p.y = p.y - 0.5
- local node = core.get_node_or_nil(p)
- local in_unloaded = (node == nil)
- if in_unloaded then
- -- Don't infinetly fall into unloaded map
- self.object:set_velocity({x = 0, y = 0, z = 0})
+
+ local pos = self.object:get_pos()
+ local node = core.get_node_or_nil({
+ x = pos.x,
+ y = pos.y + self.object:get_properties().collisionbox[2] - 0.05,
+ z = pos.z
+ })
+ local vel = self.object:getvelocity()
+ local def = node and core.registered_nodes[node.name]
+ -- Ignore is nil -> stop until the block loaded
+ local is_physical = (def and not def.walkable) or vel.y ~= 0
+ local is_slippery = false
+
+ if def and def.walkable and
+ (math.abs(vel.x) > 0.2 or math.abs(vel.z) > 0.2) then
+ local slippery = core.get_item_group(node.name, "slippery")
+ is_slippery = slippery ~= 0
+ if is_slippery then
+ is_physical = true
+
+ -- Horizontal deceleration
+ local slip_factor = 4.0 / (slippery + 4)
+ self.object:set_acceleration({
+ x = -vel.x * slip_factor,
+ y = 0,
+ z = -vel.z * slip_factor
+ })
+ end
+ end
+
+ if self.physical_state == is_physical and
+ self.slippery_state == is_slippery then
+ -- Do not update anything until the physical state changes
+ return
+ end
+
+ self.physical_state = is_physical
+ self.slippery_state = is_slippery
+ self.object:set_properties({
+ physical = is_physical
+ })
+
+ if is_slippery then
+ return
+ end
+
+ if is_physical then
+ self.object:set_acceleration({x = 0, y = -gravity, z = 0})
+ else
self.object:set_acceleration({x = 0, y = 0, z = 0})
- self.physical_state = false
- self.object:set_properties({physical = false})
+ self.object:set_velocity({x = 0, y = 0, z = 0})
+ end
+
+ -- Collect the items around to merge with
+ local own_stack = ItemStack(self.itemstring)
+ if own_stack:get_free_space() == 0 then
return
end
- local nn = node.name
- -- If node is not registered or node is walkably solid and resting on nodebox
- local v = self.object:getvelocity()
- if not core.registered_nodes[nn] or (core.registered_nodes[nn].walkable and
- core.get_item_group(nn, "slippery") == 0) and v.y == 0 then
- if self.physical_state then
- local own_stack = ItemStack(self.object:get_luaentity().itemstring)
- -- Merge with close entities of the same item
- for _, object in ipairs(core.get_objects_inside_radius(p, 0.8)) do
- local obj = object:get_luaentity()
- if obj and obj.name == "__builtin:item"
- and obj.physical_state == false then
- if self:try_merge_with(own_stack, object, obj) then
- return
- end
+ local objects = core.get_objects_inside_radius(pos, 1.0)
+ for k, obj in pairs(objects) do
+ local entity = obj:get_luaentity()
+ if entity and entity.name == "__builtin:item" then
+ if self:try_merge_with(own_stack, obj, entity) then
+ own_stack = ItemStack(self.itemstring)
+ if own_stack:get_free_space() == 0 then
+ return
end
end
- self.object:set_velocity({x = 0, y = 0, z = 0})
- self.object:set_acceleration({x = 0, y = 0, z = 0})
- self.physical_state = false
- self.object:set_properties({physical = false})
- end
- else
- if not self.physical_state then
- self.object:set_velocity({x = 0, y = 0, z = 0})
- self.object:set_acceleration({x = 0, y = -10, z = 0})
- self.physical_state = true
- self.object:set_properties({physical = true})
- elseif minetest.get_item_group(nn, "slippery") ~= 0 then
- if math.abs(v.x) < 0.2 and math.abs(v.z) < 0.2 then
- self.object:set_velocity({x = 0, y = 0, z = 0})
- self.object:set_acceleration({x = 0, y = 0, z = 0})
- self.physical_state = false
- self.object:set_properties({
- physical = false
- })
- else
- self.object:set_acceleration({x = -v.x, y = -10, z = -v.z})
- end
end
end
end,
on_punch = function(self, hitter)
local inv = hitter:get_inventory()
- if inv and self.itemstring ~= '' then
+ if inv and self.itemstring ~= "" then
local left = inv:add_item("main", self.itemstring)
if left and not left:is_empty() then
- self.itemstring = left:to_string()
+ self:set_item(left)
return
end
end
- self.itemstring = ''
+ self.itemstring = ""
self.object:remove()
end,
})
projects / oweals / minetest.git / commitdiff