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authorLoïc Blot <nerzhul@users.noreply.github.com>2017-03-22 21:41:02 +0100
committerGitHub <noreply@github.com>2017-03-22 21:41:02 +0100
commit072bbba69aa2528c309b76aaec288bdba52e119c (patch)
tree60070fc33757aebdd52c666cdbd3de85fc2e673a /client/shaders/minimap_shader/opengl_fragment.glsl
parent9efc5da0fb7d276deff55db6e4eb89d24ca72b5d (diff)
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Some performance optimizations (#5424)
* Some performance optimizations This is globally removing some memory useless copy * use a const ref return on std::string Settings::get to prevent data copy on getters which doesn't need to copy it * pass some stack created strings to static const as they are not modified anywhere * Camera: return nametags per const ref instead of a list pointer, we only need to read it * INodeDefManager: getAll should be a result ref writer instead of a return copy * INodeDefManager: getAlias should return a const std::string ref * Minimap: unroll a Scolor creation in blitMinimapPixersToImageRadar to prvent many variable construct/destruct which are unneeded (we rewrite the content in the loop) * CNodeDefManager::updateAliases: prevent a idef getall copy * Profiler: constness * rollback_interface: create real_name later, and use const ref * MapBlockMesh updateFastFaceRow: unroll TileSpec next_tile, which has a cost of 1.8% CPU due to variable allocation/destruction, * MapBlockMesh updateFastFaceRow: copy next_tile to tile only if it's a different tilespec * MapBlockMesh updateFastFaceRow: use memcpy to copy next_lights to lights to do it in a single cpu operation
Diffstat (limited to 'client/shaders/minimap_shader/opengl_fragment.glsl')
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generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 03:58:51 +0000
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-- Minetest: builtin/item.lua

local builtin_shared = ...

local function copy_pointed_thing(pointed_thing)
	return {
		type  = pointed_thing.type,
		above = vector.new(pointed_thing.above),
		under = vector.new(pointed_thing.under),
		ref   = pointed_thing.ref,
	}
end

--
-- Item definition helpers
--

function core.get_pointed_thing_position(pointed_thing, above)
	if pointed_thing.type == "node" then
		if above then
			-- The position where a node would be placed
			return pointed_thing.above
		end
		-- The position where a node would be dug
		return pointed_thing.under
	elseif pointed_thing.type == "object" then
		return pointed_thing.ref and pointed_thing.ref:get_pos()
	end
end

local function has_all_groups(tbl, required_groups)
	if type(required_groups) == "string" then
		return (tbl[required_groups] or 0) ~= 0
	end
	for _, group in ipairs(required_groups) do
		if (tbl[group] or 0) == 0 then
			return false
		end
	end
	return true
end

function core.get_node_drops(node, toolname)
	-- Compatibility, if node is string
	local nodename = node
	local param2 = 0
	-- New format, if node is table
	if (type(node) == "table") then
		nodename = node.name
		param2 = node.param2
	end
	local def = core.registered_nodes[nodename]
	local drop = def and def.drop
	local ptype = def and def.paramtype2
	-- get color, if there is color (otherwise nil)
	local palette_index = core.strip_param2_color(param2, ptype)
	if drop == nil then
		-- default drop
		if palette_index then
			local stack = ItemStack(nodename)
			stack:get_meta():set_int("palette_index", palette_index)
			return {stack:to_string()}
		end
		return {nodename}
	elseif type(drop) == "string" then
		-- itemstring drop
		return drop ~= "" and {drop} or {}
	elseif drop.items == nil then
		-- drop = {} to disable default drop
		return {}
	end

	-- Extended drop table
	local got_items = {}
	local got_count = 0
	for _, item in ipairs(drop.items) do
		local good_rarity = true
		local good_tool = true
		if item.rarity ~= nil then
			good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
		end
		if item.tools ~= nil or item.tool_groups ~= nil then
			good_tool = false
		end
		if item.tools ~= nil and toolname then
			for _, tool in ipairs(item.tools) do
				if tool:sub(1, 1) == '~' then
					good_tool = toolname:find(tool:sub(2)) ~= nil
				else
					good_tool = toolname == tool
				end
				if good_tool then
					break
				end
			end
		end
		if item.tool_groups ~= nil and toolname then
			local tooldef = core.registered_items[toolname]
			if tooldef ~= nil and type(tooldef.groups) == "table" then
				if type(item.tool_groups) == "string" then
					-- tool_groups can be a string which specifies the required group
					good_tool = core.get_item_group(toolname, item.tool_groups) ~= 0
				else
					-- tool_groups can be a list of sufficient requirements.
					-- i.e. if any item in the list can be satisfied then the tool is good
					assert(type(item.tool_groups) == "table")
					for _, required_groups in ipairs(item.tool_groups) do
						-- required_groups can be either a string (a single group),
						-- or an array of strings where all must be in tooldef.groups
						good_tool = has_all_groups(tooldef.groups, required_groups)
						if good_tool then
							break
						end
					end
				end
			end
		end
		if good_rarity and good_tool then
			got_count = got_count + 1
			for _, add_item in ipairs(item.items) do
				-- add color, if necessary
				if item.inherit_color and palette_index then
					local stack = ItemStack(add_item)
					stack:get_meta():set_int("palette_index", palette_index)
					add_item = stack:to_string()
				end
				got_items[#got_items+1] = add_item
			end
			if drop.max_items ~= nil and got_count == drop.max_items then
				break
			end
		end
	end
	return got_items
end

local function user_name(user)
	return user and user:get_player_name() or ""
end

-- Returns a logging function. For empty names, does not log.
local function make_log(name)
	return name ~= "" and core.log or function() end
end

function core.item_place_node(itemstack, placer, pointed_thing, param2,
		prevent_after_place)
	local def = itemstack:get_definition()
	if def.type ~= "node" or pointed_thing.type ~= "node" then
		return itemstack, nil
	end

	local under = pointed_thing.under
	local oldnode_under = core.get_node_or_nil(under)
	local above = pointed_thing.above
	local oldnode_above = core.get_node_or_nil(above)
	local playername = user_name(placer)
	local log = make_log(playername)

	if not oldnode_under or not oldnode_above then
		log("info", playername .. " tried to place"
			.. " node in unloaded position " .. core.pos_to_string(above))
		return itemstack, nil
	end

	local olddef_under = core.registered_nodes[oldnode_under.name]
	olddef_under = olddef_under or core.nodedef_default
	local olddef_above = core.registered_nodes[oldnode_above.name]
	olddef_above = olddef_above or core.nodedef_default

	if not olddef_above.buildable_to and not olddef_under.buildable_to then
		log("info", playername .. " tried to place"
			.. " node in invalid position " .. core.pos_to_string(above)
			.. ", replacing " .. oldnode_above.name)
		return itemstack, nil
	end

	-- Place above pointed node
	local place_to = vector.new(above)

	-- If node under is buildable_to, place into it instead (eg. snow)
	if olddef_under.buildable_to then
		log("info", "node under is buildable to")
		place_to = vector.new(under)
	end

	if core.is_protected(place_to, playername) then
		log("action", playername
				.. " tried to place " .. def.name
				.. " at protected position "
				.. core.pos_to_string(place_to))
		core.record_protection_violation(place_to, playername)
		return itemstack, nil
	end

	local oldnode = core.get_node(place_to)
	local newnode = {name = def.name, param1 = 0, param2 = param2 or 0}

	-- Calculate direction for wall mounted stuff like torches and signs
	if def.place_param2 ~= nil then
		newnode.param2 = def.place_param2
	elseif (def.paramtype2 == "wallmounted" or
			def.paramtype2 == "colorwallmounted") and not param2 then
		local dir = vector.subtract(under, above)
		newnode.param2 = core.dir_to_wallmounted(dir)
	-- Calculate the direction for furnaces and chests and stuff
	elseif (def.paramtype2 == "facedir" or
			def.paramtype2 == "colorfacedir") and not param2 then
		local placer_pos = placer and placer:get_pos()
		if placer_pos then
			local dir = vector.subtract(above, placer_pos)
			newnode.param2 = core.dir_to_facedir(dir)
			log("info", "facedir: " .. newnode.param2)
		end
	end

	local metatable = itemstack:get_meta():to_table().fields

	-- Transfer color information
	if metatable.palette_index and not def.place_param2 then
		local color_divisor = nil
		if def.paramtype2 == "color" then
			color_divisor = 1
		elseif def.paramtype2 == "colorwallmounted" then
			color_divisor = 8
		elseif def.paramtype2 == "colorfacedir" then
			color_divisor = 32
		elseif def.paramtype2 == "colordegrotate" then
			color_divisor = 32
		end
		if color_divisor then
			local color = math.floor(metatable.palette_index / color_divisor)
			local other = newnode.param2 % color_divisor
			newnode.param2 = color * color_divisor + other
		end
	end

	-- Check if the node is attached and if it can be placed there
	if core.get_item_group(def.name, "attached_node") ~= 0 and
		not builtin_shared.check_attached_node(place_to, newnode) then
		log("action", "attached node " .. def.name ..
			" can not be placed at " .. core.pos_to_string(place_to))
		return itemstack, nil
	end

	log("action", playername .. " places node "
		.. def.name .. " at " .. core.pos_to_string(place_to))

	-- Add node and update
	core.add_node(place_to, newnode)

	-- Play sound if it was done by a player
	if playername ~= "" and def.sounds and def.sounds.place then
		core.sound_play(def.sounds.place, {
			pos = place_to,
			exclude_player = playername,
		}, true)
	end

	local take_item = true

	-- Run callback
	if def.after_place_node and not prevent_after_place then
		-- Deepcopy place_to and pointed_thing because callback can modify it
		local place_to_copy = vector.new(place_to)
		local pointed_thing_copy = copy_pointed_thing(pointed_thing)
		if def.after_place_node(place_to_copy, placer, itemstack,
				pointed_thing_copy) then
			take_item = false
		end
	end

	-- Run script hook
	for _, callback in ipairs(core.registered_on_placenodes) do
		-- Deepcopy pos, node and pointed_thing because callback can modify them
		local place_to_copy = vector.new(place_to)
		local newnode_copy = {name=newnode.name, param1=newnode.param1, param2=newnode.param2}
		local oldnode_copy = {name=oldnode.name, param1=oldnode.param1, param2=oldnode.param2}
		local pointed_thing_copy = copy_pointed_thing(pointed_thing)
		if callback(place_to_copy, newnode_copy, placer, oldnode_copy, itemstack, pointed_thing_copy) then
			take_item = false
		end
	end

	if take_item then
		itemstack:take_item()
	end
	return itemstack, place_to
end

-- deprecated, item_place does not call this
function core.item_place_object(itemstack, placer, pointed_thing)
	local pos = core.get_pointed_thing_position(pointed_thing, true)
	if pos ~= nil then
		local item = itemstack:take_item()
		core.add_item(pos, item)
	end
	return itemstack
end

function core.item_place(itemstack, placer, pointed_thing, param2)
	-- Call on_rightclick if the pointed node defines it
	if pointed_thing.type == "node" and placer and
			not placer:get_player_control().sneak then
		local n = core.get_node(pointed_thing.under)
		local nn = n.name
		if core.registered_nodes[nn] and core.registered_nodes[nn].on_rightclick then
			return core.registered_nodes[nn].on_rightclick(pointed_thing.under, n,
					placer, itemstack, pointed_thing) or itemstack, nil
		end
	end

	-- Place if node, otherwise do nothing
	if itemstack:get_definition().type == "node" then
		return core.item_place_node(itemstack, placer, pointed_thing, param2)
	end
	return itemstack, nil
end

function core.item_secondary_use(itemstack, placer)
	return itemstack
end

function core.item_drop(itemstack, dropper, pos)
	local dropper_is_player = dropper and dropper:is_player()
	local p = table.copy(pos)
	local cnt = itemstack:get_count()
	if dropper_is_player then
		p.y = p.y + 1.2
	end
	local item = itemstack:take_item(cnt)
	local obj = core.add_item(p, item)
	if obj then
		if dropper_is_player then
			local dir = dropper:get_look_dir()
			dir.x = dir.x * 2.9
			dir.y = dir.y * 2.9 + 2
			dir.z = dir.z * 2.9
			obj:set_velocity(dir)
			obj:get_luaentity().dropped_by = dropper:get_player_name()
		end
		return itemstack
	end
	-- If we reach this, adding the object to the