Zizis reports: sit in chir and do /sit ... #3313

Zizis reports a bug:

sit in chir and do /sit

Player position:

{
	z = 1160.5729980469,
	x = 2047.0150146484,
	y = 21.298999786377
}

Player look:

{
	z = -0.79872435331345,
	x = -0.44237521290779,
	y = -0.40785244107246
}

Player information:

{
	state = "Active",
	ip_version = 6,
	min_rtt = 0.1140000000596,
	avg_rtt = 0.11599999666214,
	min_jitter = 0,
	max_jitter = 3.9570000171661,
	avg_jitter = 0,
	connection_uptime = 458,
	patch = 1,
	lang_code = "",
	formspec_version = 6,
	major = 5,
	version_string = "5.6.1",
	minor = 6,
	max_rtt = 4.981999874115,
	protocol_version = 41,
	serialization_version = 29
}

Player meta:

{
	fields = {
		played_time = "506170",
		digged_nodes = "84403",
		placed_nodes = "26071",
		died = "92",
		["unified_inventory:bags"] = "return {\"unified_inventory:bag_large\", \"unified_inventory:bag_large\", \"unified_inventory:bag_large\", \"unified_inventory:bag_large\"}",
		crafted = "2125",
		yl_church = "return {[\"last_heal\"] = 1653615755, [\"last_death_portal\"] = 1671574808, [\"last_death\"] = {[\"z\"] = 1291, [\"x\"] = 2021, [\"y\"] = 20}}",
		["stamina:poisoned"] = "no",
		["stamina:level"] = "18",
		["stamina:exhaustion"] = "139.5",
		partychat = "party",
		bitten = "0",
		repellant = "0",
		xp = "70063",
		yl_commons_thankyou = "7",
		["ocean_build.last_warning"] = "1.67192e+09",
		hud_state = "on",
		jointime = "1652823902",
		["petz:old_override_table"] = "return {[\"new_move\"] = true, [\"speed\"] = 2, [\"jump\"] = 1.5, [\"sneak\"] = true, [\"gravity\"] = 1, [\"sneak_glitch\"] = false}",
		["petz:werewolf"] = "0",
		arenalib_infobox_arenaID = "0",
		yl_commons_player_created = "1652823902",
		yl_commons_player_joined = "1671925152",
		["signslib:pos"] = "(2028,-5408,1450)",
		["ocean_build.ocean_built"] = "12",
		["ocean_build.forbidden"] = "true",
		["petz:werewolf_vignette_id"] = "5",
		punch_count = "8052",
		["petz:lycanthropy"] = "0",
		inflicted_damage = "135334",
		["3d_armor_inventory"] = "return {\"3d_armor:leggings_crystal 1 12060\", \"3d_armor:boots_crystal 1 12060\", \"3d_armor:helmet_crystal 1 12060\", \"3d_armor:chestplate_rainbow 1 9956\", \"shields:shield_crystal 1 12060\", \"\"}",
		["petz:werewolf_clan_idx"] = "1"
	}
}

Log identifier


[MOD] yl_report log identifier = g5yq8SpjyM9mOj5J0R6XhspfFy91eIAx

Profiler save:

profile-20221224T234638.json_prettyEE

Status:

# Server: version: 5.6.1-yl | game: Minetest Game | uptime: 17h 34min 58s | max lag: 3.37s | clients (25/42): afonsan, AliasAlreadyTaken, Aliza, Bailiff, Bla, Boris, daydream, Domough, Ecklair, ElusiveAstropath, flux, Kalek, Katze, labrat, Mica, niceride, Pocrom, Redshirt, rewired_X, Service, set, shanish3, Sysmatic, WhereIsHommy, Zizis

Teleport command:

/teleport xyz 2047 21 1161

Compass command:

/give_compass Construction g5yq8SpjyM9mOj5J0R6XhspfFy91eIAx D2691E 2047 21 1161

Zizis reports a bug: > sit in chir and do /sit Player position: ``` { z = 1160.5729980469, x = 2047.0150146484, y = 21.298999786377 } ``` Player look: ``` { z = -0.79872435331345, x = -0.44237521290779, y = -0.40785244107246 } ``` Player information: ``` { state = "Active", ip_version = 6, min_rtt = 0.1140000000596, avg_rtt = 0.11599999666214, min_jitter = 0, max_jitter = 3.9570000171661, avg_jitter = 0, connection_uptime = 458, patch = 1, lang_code = "", formspec_version = 6, major = 5, version_string = "5.6.1", minor = 6, max_rtt = 4.981999874115, protocol_version = 41, serialization_version = 29 } ``` Player meta: ``` { fields = { played_time = "506170", digged_nodes = "84403", placed_nodes = "26071", died = "92", ["unified_inventory:bags"] = "return {\"unified_inventory:bag_large\", \"unified_inventory:bag_large\", \"unified_inventory:bag_large\", \"unified_inventory:bag_large\"}", crafted = "2125", yl_church = "return {[\"last_heal\"] = 1653615755, [\"last_death_portal\"] = 1671574808, [\"last_death\"] = {[\"z\"] = 1291, [\"x\"] = 2021, [\"y\"] = 20}}", ["stamina:poisoned"] = "no", ["stamina:level"] = "18", ["stamina:exhaustion"] = "139.5", partychat = "party", bitten = "0", repellant = "0", xp = "70063", yl_commons_thankyou = "7", ["ocean_build.last_warning"] = "1.67192e+09", hud_state = "on", jointime = "1652823902", ["petz:old_override_table"] = "return {[\"new_move\"] = true, [\"speed\"] = 2, [\"jump\"] = 1.5, [\"sneak\"] = true, [\"gravity\"] = 1, [\"sneak_glitch\"] = false}", ["petz:werewolf"] = "0", arenalib_infobox_arenaID = "0", yl_commons_player_created = "1652823902", yl_commons_player_joined = "1671925152", ["signslib:pos"] = "(2028,-5408,1450)", ["ocean_build.ocean_built"] = "12", ["ocean_build.forbidden"] = "true", ["petz:werewolf_vignette_id"] = "5", punch_count = "8052", ["petz:lycanthropy"] = "0", inflicted_damage = "135334", ["3d_armor_inventory"] = "return {\"3d_armor:leggings_crystal 1 12060\", \"3d_armor:boots_crystal 1 12060\", \"3d_armor:helmet_crystal 1 12060\", \"3d_armor:chestplate_rainbow 1 9956\", \"shields:shield_crystal 1 12060\", \"\"}", ["petz:werewolf_clan_idx"] = "1" } } ``` Log identifier ``` [MOD] yl_report log identifier = g5yq8SpjyM9mOj5J0R6XhspfFy91eIAx ``` Profiler save: ``` profile-20221224T234638.json_prettyEE ``` Status: ``` # Server: version: 5.6.1-yl | game: Minetest Game | uptime: 17h 34min 58s | max lag: 3.37s | clients (25/42): afonsan, AliasAlreadyTaken, Aliza, Bailiff, Bla, Boris, daydream, Domough, Ecklair, ElusiveAstropath, flux, Kalek, Katze, labrat, Mica, niceride, Pocrom, Redshirt, rewired_X, Service, set, shanish3, Sysmatic, WhereIsHommy, Zizis ``` Teleport command: ``` /teleport xyz 2047 21 1161 ``` Compass command: ``` /give_compass Construction g5yq8SpjyM9mOj5J0R6XhspfFy91eIAx D2691E 2047 21 1161 ```

this is actually a pretty impressive exploit. the weirdness here doesn't happen when you /sit after right-clicking a chair. the weirdness happens if you try to "walk" out of the chair after doing both things (it seems to work in either order).

the weirdness can be reset by right-clicking the chair again.

the weirdness is that you seem to never be properly detached from the dummy chair entity. somehow /sit's logic breaks that. the effect is that you can walk around now, but you y-velocity is stuck at 0 (well, it seems to get stuck at any value, but i don't know a way to change it w/out the fly priv). this means you can neither jump, nor can you fall. this effectively allows anyone to fly around, though only at a fixed y level.

I tried it and noticed you can change your y-level by swimming, using stairs, and if you swim up into air, your y-velocity is non-zero when you exit the water and you float up. (It's a pretty interesting way of flying, maybe flying with some odd limitations like this would be desirable for Builder's flight?)

note that this is related to, but not the same issue as #1814