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added buffer overflow prevention

master
Alexsandro Percy 2021-12-03 13:12:49 -03:00
parent 7a87cd3456
commit a1cf35d380
1 changed files with 13 additions and 13 deletions
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26
supercub_custom_physics.lua
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@ -35,19 +35,6 @@ function supercub.physics(self)
local accell = self._last_accell
--[[
accell correction
under some circunstances the acceleration exceeds the max value accepted by set_acceleration and
the game crashes with an overflow, so limiting the max acceleration in each axis prevents the crash
]]--
local max_factor = 25
local acc_adjusted = 10
if accell.x > max_factor then accell.x = acc_adjusted end
if accell.x < -max_factor then accell.x = -acc_adjusted end
if accell.z > max_factor then accell.z = acc_adjusted end
if accell.z < -max_factor then accell.z = -acc_adjusted end
-- end correction
accell.y = accell.y + mobkit.gravity
self.water_drag = 0.1
@ -59,6 +46,19 @@ function supercub.physics(self)
new_velocity = vector.add(vel, vector.multiply(accell, self.dtime))
self.object:set_pos(self.object:get_pos())
--[[
accell correction
under some circunstances the acceleration exceeds the max value accepted by set_acceleration and
the game crashes with an overflow, so limiting the max acceleration in each axis prevents the crash
]]--
local max_factor = 200
local acc_adjusted = 20
if new_velocity.x > max_factor then new_velocity.x = acc_adjusted end
if new_velocity.x < -max_factor then new_velocity.x = -acc_adjusted end
if new_velocity.z > max_factor then new_velocity.z = acc_adjusted end
if new_velocity.z < -max_factor then new_velocity.z = -acc_adjusted end
-- end correction
-- dumb friction
if self.isonground and not self.isinliquid then
self.object:set_velocity({x=new_velocity.x*friction,