Mutant Monster Vortigaunt - PowerPoint PPT Presentation
Title:
Mutant Monster Vortigaunt
Description:
To implement a crazy monster that attacks the player violently. ... Capable of range attack and melee attack, a loyal friend of the player that ... – PowerPoint PPT presentation
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Title: Mutant Monster Vortigaunt
1
Mutant Monster Vortigaunt
- Ming Yang
2
Outline
- Goal
- Crazy monster vortigaunt
- Custom NPC
- Sub-system of AI
- NPC vortigaunt
- Damage system
- Demo
3
Goal
- To implement a crazy monster that attacks the
player violently. - To implement a custom NPC based on custom
modeling.
4
Challenges
- The AI and NPC systems are huge.
- The functionalities are distributed in the class
hierarchy tree. Some latent constraints are hard
to find.
5
Results
- Convert the friendly ally monster vortigaunt into
a crazy killer. - Create a custom NPC npc_cube based on Zachs
modeling (why it cannot think?)
6
NPC vortigaunt
- Capable of range attack and melee attack, a loyal
friend of the player that attacks the players
enemy and heal the player. - Set the player to be the enemy of vortigaunt is
forbidden. - The damage of vortigaunts attack to the player
will be filtered.
7
Custom schedule
- Detect the player and trigger the attack
- Add modules in SelectSchedule().
- Implement 2 kinds of custom schedules
- SCHED_VORTIGAUNT_MELEE_ATTACK_PLAYER
- SCHED_VORTIGAUNT_RANGE_DODGE
8
Damage System
- Class CTakeDamageInfo wraps the damage info
including the attacker, damage, damage force,
damage position et al. - Attacker generates CTakeDamageInfo objects and
calls the victims TakeDamage() to send the
damage and the victim responses it in
OnTakeDamage().
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Damage filter
- The damage sent to the player will be filtered in
- CBasePlayerTraceAttack
- CBasePlayerOnTakeDamage
- CHL2_PlayerPassesDamageFilter
- CTeamplayRules will test if the attacker is
teammate or ally. - g_pGameRules-gtFPlayerCanTakeDamage
- CTeamplayRulesFPlayerCanTakeDamage
10
Demo
- Run run_mod.bat
- Test the npc with console commands
- Npc_create npc_vortigaunt
- Npc_create npc_cube
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