Sever Crash

[mbasaglia]

With many bots, the fire fountain often causes the following crash:

Host_Error: server: NAN errors detected in traceline('436.174683 -553.281555 -132.968750', '-nan -nan nan', 1, entity 0)

QuakeC crash report for server:
s98983: bot/havocbot/havocbot.qc:725: ADD_V      GLOBAL31144, GLOBAL21383, GLOBAL31134
s98984: bot/havocbot/havocbot.qc:728: FIELD_V    self (=entity 4), .origin (=.origin), GLOBAL31110
s98985: bot/havocbot/havocbot.qc:728: FIELD_V    self (=entity 4), .view_ofs (=.view_ofs), GLOBAL31113
s98986: bot/havocbot/havocbot.qc:728: ADD_V      GLOBAL31110, GLOBAL31113, GLOBAL4
s98987: bot/havocbot/havocbot.qc:728: STORE_V    GLOBAL31144, GLOBAL7
s98988: bot/havocbot/havocbot.qc:728: STORE_F    GLOBAL19406, GLOBAL10
s98989: bot/havocbot/havocbot.qc:728: STORE_ENT  world (=entity 0), GLOBAL13
s98990: bot/havocbot/havocbot.qc:728: CALL4      traceline (=traceline())
bot/havocbot/havocbot.qc:728 : havocbot_movetogoal : statement 557
bot/havocbot/havocbot.qc:146 : havocbot_ai : statement 51
  bot/bot.qc:105 : bot_think : statement 100
cl_physics.qc:751 : SV_PlayerPhysics : statement 204
Host_ShutdownServer

[mbasaglia]

• happens also if there's no think function for the napalm balls
• happens also if bot_dodge is disabled
• easy to reproduce only in ft
• happens when there are a bunch of frozen bot near a fire fountain