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Merge pull request 'Add some mob object checks to avoid crashing' (#3324) from fix_ghast_kill_crash into master

Reviewed-on: MineClone2/MineClone2#3324
Reviewed-by: 𝕵𝖔𝖍𝖆𝖓𝖓𝖊𝖘 𝕱𝖗𝖎𝖙𝖟 <mrrar@noreply.git.minetest.land>
This commit is contained in:
ancientmarinerdev 2023-01-23 20:19:34 +00:00
commit 6d60fb4160
3 changed files with 65 additions and 57 deletions

View File

@ -335,24 +335,27 @@ function mob_class:on_step(dtime)
if self:check_despawn(pos, dtime) then return true end if self:check_despawn(pos, dtime) then return true end
self:slow_mob() if self:check_death_and_slow_mob() then
--minetest.log("action", "Mob is dying: ".. tostring(self.name))
-- Do we abandon out of here now?
end
if self:falling(pos) then return end if self:falling(pos) then return end
self:check_suspend() self:check_suspend()
self:check_water_flow()
self:env_danger_movement_checks (dtime)
if not self.fire_resistant then if not self.fire_resistant then
mcl_burning.tick(self.object, dtime, self) mcl_burning.tick(self.object, dtime, self)
-- mcl_burning.tick may remove object immediately -- mcl_burning.tick may remove object immediately
if not self.object:get_pos() then return end if not self.object:get_pos() then return end
end end
if mobs_debug then self:update_tag() end
if self.state == "die" then return end if self.state == "die" then return end
self:check_water_flow()
self:env_danger_movement_checks (dtime)
if mobs_debug then self:update_tag() end
self:follow_flop() -- Mob following code. self:follow_flop() -- Mob following code.
self:set_animation_speed() -- set animation speed relitive to velocity self:set_animation_speed() -- set animation speed relitive to velocity

View File

@ -279,6 +279,7 @@ function mob_class:env_danger_movement_checks(dtime)
yaw = self:set_yaw( yaw, 8) yaw = self:set_yaw( yaw, 8)
end end
else else
-- This code should probably be moved to movement code
if self.move_in_group ~= false then if self.move_in_group ~= false then
self:check_herd(dtime) self:check_herd(dtime)
end end

View File

@ -47,7 +47,8 @@ end
function mob_class:player_in_active_range() function mob_class:player_in_active_range()
for _,p in pairs(minetest.get_connected_players()) do for _,p in pairs(minetest.get_connected_players()) do
if vector.distance(self.object:get_pos(),p:get_pos()) <= mob_active_range then return true end local pos = self.object:get_pos()
if pos and vector.distance(pos, p:get_pos()) <= mob_active_range then return true end
-- slightly larger than the mc 32 since mobs spawn on that circle and easily stand still immediately right after spawning. -- slightly larger than the mc 32 since mobs spawn on that circle and easily stand still immediately right after spawning.
end end
end end
@ -182,15 +183,17 @@ function mob_class:collision()
return({x,z}) return({x,z})
end end
function mob_class:slow_mob() function mob_class:check_death_and_slow_mob()
local d = 0.85 local d = 0.85
if self:check_dying() then d = 0.92 end local dying = self:check_dying()
if dying then d = 0.92 end
local v = self.object:get_velocity() local v = self.object:get_velocity()
if v then if v then
--diffuse object velocity --diffuse object velocity
self.object:set_velocity({x = v.x*d, y = v.y, z = v.z*d}) self.object:set_velocity({x = v.x*d, y = v.y, z = v.z*d})
end end
return dying
end end
-- move mob in facing direction -- move mob in facing direction
@ -519,17 +522,16 @@ function mob_class:check_for_death(cause, cmi_cause)
self:set_velocity(0) self:set_velocity(0)
local acc = self.object:get_acceleration() local acc = self.object:get_acceleration()
acc.x, acc.y, acc.z = 0, DEFAULT_FALL_SPEED, 0 if acc then
self.object:set_acceleration(acc) acc.x, acc.y, acc.z = 0, DEFAULT_FALL_SPEED, 0
self.object:set_acceleration(acc)
end
local length local length
-- default death function and die animation (if defined) -- default death function and die animation (if defined)
if self.instant_death then if self.instant_death then
length = 0 length = 0
elseif self.animation elseif self.animation and self.animation.die_start and self.animation.die_end then
and self.animation.die_start
and self.animation.die_end then
local frames = self.animation.die_end - self.animation.die_start local frames = self.animation.die_end - self.animation.die_start
local speed = self.animation.die_speed or 15 local speed = self.animation.die_speed or 15
length = math.max(frames / speed, 0) + DEATH_DELAY length = math.max(frames / speed, 0) + DEATH_DELAY
@ -545,7 +547,6 @@ function mob_class:check_for_death(cause, cmi_cause)
if not self.object:get_luaentity() then if not self.object:get_luaentity() then
return return
end end
death_handle(self) death_handle(self)
local dpos = self.object:get_pos() local dpos = self.object:get_pos()
local cbox = self.collisionbox local cbox = self.collisionbox
@ -554,6 +555,7 @@ function mob_class:check_for_death(cause, cmi_cause)
self.object:remove() self.object:remove()
mcl_mobs.death_effect(dpos, yaw, cbox, not self.instant_death) mcl_mobs.death_effect(dpos, yaw, cbox, not self.instant_death)
end end
if length <= 0 then if length <= 0 then
kill(self) kill(self)
else else
@ -870,33 +872,32 @@ function mob_class:falling(pos)
-- floating in water (or falling) -- floating in water (or falling)
local v = self.object:get_velocity() local v = self.object:get_velocity()
if v then
if v.y > 0 then
-- apply gravity when moving up
self.object:set_acceleration({
x = 0,
y = DEFAULT_FALL_SPEED,
z = 0
})
if v.y > 0 then elseif v.y <= 0 and v.y > self.fall_speed then
-- fall downwards at set speed
-- apply gravity when moving up self.object:set_acceleration({
self.object:set_acceleration({ x = 0,
x = 0, y = self.fall_speed,
y = DEFAULT_FALL_SPEED, z = 0
z = 0 })
}) else
-- stop accelerating once max fall speed hit
elseif v.y <= 0 and v.y > self.fall_speed then self.object:set_acceleration({x = 0, y = 0, z = 0})
end
-- fall downwards at set speed
self.object:set_acceleration({
x = 0,
y = self.fall_speed,
z = 0
})
else
-- stop accelerating once max fall speed hit
self.object:set_acceleration({x = 0, y = 0, z = 0})
end end
local acc = self.object:get_acceleration()
if minetest.registered_nodes[node_ok(pos).name].groups.lava then if minetest.registered_nodes[node_ok(pos).name].groups.lava then
if acc and self.floats_on_lava == 1 then
if self.floats_on_lava == 1 then
self.object:set_acceleration({ self.object:set_acceleration({
x = 0, x = 0,
y = -self.fall_speed / (math.max(1, v.y) ^ 2), y = -self.fall_speed / (math.max(1, v.y) ^ 2),
@ -907,9 +908,7 @@ function mob_class:falling(pos)
-- in water then float up -- in water then float up
if minetest.registered_nodes[node_ok(pos).name].groups.water then if minetest.registered_nodes[node_ok(pos).name].groups.water then
if acc and self.floats == 1 then
if self.floats == 1 then
self.object:set_acceleration({ self.object:set_acceleration({
x = 0, x = 0,
y = -self.fall_speed / (math.max(1, v.y) ^ 2), y = -self.fall_speed / (math.max(1, v.y) ^ 2),
@ -917,10 +916,8 @@ function mob_class:falling(pos)
}) })
end end
else else
-- fall damage onto solid ground -- fall damage onto solid ground
if self.fall_damage == 1 if self.fall_damage == 1 and self.object:get_velocity().y == 0 then
and self.object:get_velocity().y == 0 then
local n = node_ok(vector.offset(pos,0,-1,0)).name local n = node_ok(vector.offset(pos,0,-1,0)).name
local d = (self.old_y or 0) - self.object:get_pos().y local d = (self.old_y or 0) - self.object:get_pos().y
@ -981,24 +978,31 @@ end
function mob_class:check_dying() function mob_class:check_dying()
if ((self.state and self.state=="die") or self:check_for_death()) and not self.animation.die_end then if ((self.state and self.state=="die") or self:check_for_death()) and not self.animation.die_end then
local rot = self.object:get_rotation() local rot = self.object:get_rotation()
rot.z = ((math.pi/2-rot.z)*.2)+rot.z if rot then
self.object:set_rotation(rot) rot.z = ((math.pi/2-rot.z)*.2)+rot.z
self.object:set_rotation(rot)
end
return true return true
end end
end end
function mob_class:check_suspend() function mob_class:check_suspend()
if not self:player_in_active_range() then local pos = self.object:get_pos()
local pos = self.object:get_pos()
if pos and not self:player_in_active_range() then
local node_under = node_ok(vector.offset(pos,0,-1,0)).name local node_under = node_ok(vector.offset(pos,0,-1,0)).name
local acc = self.object:get_acceleration()
self:set_animation( "stand", true) self:set_animation( "stand", true)
if acc.y > 0 or node_under ~= "air" then
self.object:set_acceleration(vector.new(0,0,0)) local acc = self.object:get_acceleration()
self.object:set_velocity(vector.new(0,0,0)) if acc then
end if acc.y > 0 or node_under ~= "air" then
if acc.y == 0 and node_under == "air" then self.object:set_acceleration(vector.new(0,0,0))
self:falling(pos) self.object:set_velocity(vector.new(0,0,0))
end
if acc.y == 0 and node_under == "air" then
self:falling(pos)
end
end end
return true return true
end end