DoomRTX/neo/doom3/game/ai/AI_monster_zombie.cpp

// AI_monster_zombie.cpp
// Native state-machine replacement for ai_monster_zombie.script.

#include "precompiled.h"
#pragma hdrstop
#include "../Game_local.h"



rvmMonsterZombie::rvmMonsterZombie() {
    painNextTime = 0.0f;
    can_run = false;
}

void rvmMonsterZombie::Init( idAI* aiOwner ) {
    rvmMonsterZombieBase::Init( aiOwner );
    run_distance = 192.0f;
    walk_turn = 65.0f;
    can_run = HasAnim( ANIMCHANNEL_LEGS, "run" );
    SetState( "state_Begin" );
}

stateResult_t rvmMonsterZombie::RunStateByName( const char* stateName, stateParms_t* parms ) {
    AI_DISPATCH_STATE( "Torso_Idle", Torso_Idle );
    AI_DISPATCH_STATE( "Torso_Pain", Torso_Pain );
    AI_DISPATCH_STATE( "Torso_MeleeAttack", Torso_MeleeAttack );
    AI_DISPATCH_STATE( "Legs_Idle", Legs_Idle );
    AI_DISPATCH_STATE( "Legs_Walk", Legs_Walk );
    AI_DISPATCH_STATE( "Legs_Run", Legs_Run );
    AI_DISPATCH_STATE( "state_Begin", state_Begin );
    AI_DISPATCH_STATE( "state_Idle", state_Idle );
    AI_DISPATCH_STATE( "combat_melee", combat_melee );
    return rvmMonsterZombieBase::RunStateByName( stateName, parms );
}

stateResult_t rvmMonsterZombie::Torso_Idle( stateParms_t* parms ) {
    if ( parms->stage == 0 ) {
        IdleAnim( ANIMCHANNEL_TORSO, "idle" );
        parms->stage = 1;
    }
    if ( Pain() ) {
        SetAnimState( ANIMCHANNEL_TORSO, "Torso_Pain", 3 );
        return SRESULT_DONE;
    }
    return SRESULT_WAIT;
}

stateResult_t rvmMonsterZombie::Torso_Pain( stateParms_t* parms ) {
    enum { STAGE_START, STAGE_WAIT };
    switch ( parms->stage ) {
        case STAGE_START:
            PlayAnim( ANIMCHANNEL_TORSO, GetPainAnim() );
            painNextTime = DelayTime( 0.25f );
            parms->stage = STAGE_WAIT;
            return SRESULT_WAIT;
        case STAGE_WAIT:
            if ( Pain() && Time() > painNextTime ) {
                SetAnimState( ANIMCHANNEL_TORSO, "Torso_Pain", 8 );
                return SRESULT_DONE;
            }
            if ( AnimDone( ANIMCHANNEL_TORSO, 3 ) ) {
                FinishAction( "pain" );
                SetAnimState( ANIMCHANNEL_TORSO, "Torso_Idle", 8 );
                return SRESULT_DONE;
            }
            return SRESULT_WAIT;
    }
    return SRESULT_ERROR;
}

stateResult_t rvmMonsterZombie::Torso_MeleeAttack( stateParms_t* parms ) {
    enum { STAGE_START, STAGE_WAIT };
    switch ( parms->stage ) {
        case STAGE_START:
            PlayAnim( ANIMCHANNEL_TORSO, "melee_attack" );
            parms->stage = STAGE_WAIT;
            return SRESULT_WAIT;
        case STAGE_WAIT:
            if ( AnimDone( ANIMCHANNEL_TORSO, 8 ) ) {
                FinishAction( "melee_attack" );
                SetAnimState( ANIMCHANNEL_TORSO, "Torso_Idle", 8 );
                return SRESULT_DONE;
            }
            return SRESULT_WAIT;
    }
    return SRESULT_ERROR;
}

stateResult_t rvmMonsterZombie::Legs_Idle( stateParms_t* parms ) {
    if ( parms->stage == 0 ) {
        IdleAnim( ANIMCHANNEL_LEGS, "idle" );
        parms->stage = 1;
    }
    if ( can_run && run && MovingForward() ) { SetAnimState( ANIMCHANNEL_LEGS, "Legs_Run", 8 ); return SRESULT_DONE; }
    if ( MovingForward() ) { SetAnimState( ANIMCHANNEL_LEGS, "Legs_Walk", 8 ); return SRESULT_DONE; }
    return SRESULT_WAIT;
}

stateResult_t rvmMonsterZombie::Legs_Walk( stateParms_t* parms ) {
    if ( parms->stage == 0 ) {
        PlayCycle( ANIMCHANNEL_LEGS, "walk" );
        parms->stage = 1;
    }
    if ( can_run && run && MovingForward() ) { SetAnimState( ANIMCHANNEL_LEGS, "Legs_Run", 8 ); return SRESULT_DONE; }
    if ( !MovingForward() ) { SetAnimState( ANIMCHANNEL_LEGS, "Legs_Idle", 8 ); return SRESULT_DONE; }
    return SRESULT_WAIT;
}

stateResult_t rvmMonsterZombie::Legs_Run( stateParms_t* parms ) {
    if ( parms->stage == 0 ) {
        PlayCycle( ANIMCHANNEL_LEGS, "run" );
        parms->stage = 1;
    }
    if ( !run && MovingForward() ) { SetAnimState( ANIMCHANNEL_LEGS, "Legs_Walk", 8 ); return SRESULT_DONE; }
    if ( !MovingForward() ) { SetAnimState( ANIMCHANNEL_LEGS, "Legs_Idle", 8 ); return SRESULT_DONE; }
    return SRESULT_WAIT;
}

stateResult_t rvmMonsterZombie::state_Begin( stateParms_t* parms ) {
    enum { STAGE_START, STAGE_MONSTER_BEGIN };
    switch ( parms->stage ) {
        case STAGE_START:
            SetAnimState( ANIMCHANNEL_TORSO, "Torso_Idle", 8 );
            SetAnimState( ANIMCHANNEL_LEGS, "Legs_Idle", 8 );
            StartAction( "monster_begin" );
            parms->stage = STAGE_MONSTER_BEGIN;
            return SRESULT_WAIT;
        case STAGE_MONSTER_BEGIN:
            if ( InAction() ) {
                return SRESULT_WAIT;
            }
            SetMoveType( MOVETYPE_ANIM );
            SetState( "state_Idle" );
            return SRESULT_DONE;
    }
    return SRESULT_ERROR;
}

stateResult_t rvmMonsterZombie::state_Idle( stateParms_t* parms ) {
    enum { STAGE_START, STAGE_WAIT_FOR_ENEMY };
    switch ( parms->stage ) {
        case STAGE_START:
            StartAction( "wait_for_enemy" );
            parms->stage = STAGE_WAIT_FOR_ENEMY;
            return SRESULT_WAIT;
        case STAGE_WAIT_FOR_ENEMY:
            if ( InAction() ) {
                return SRESULT_WAIT;
            }
            SetState( "state_Combat" );
            return SRESULT_DONE;
    }
    return SRESULT_ERROR;
}

int rvmMonsterZombie::check_attacks() {
    int attack_flags = 0;
    if ( CheckForMelee() ) {
        attack_flags |= ATTACK_MELEE;
    }
    return attack_flags;
}

bool rvmMonsterZombie::do_attack( int attack_flags ) {
    const int flags = attack_flags;
    if ( flags & ATTACK_MELEE ) {
        StartAction( "combat_melee" );
        return true;
    }
    return false;
}

stateResult_t rvmMonsterZombie::combat_melee( stateParms_t* parms ) {
    enum { STAGE_START, STAGE_WAIT_ACTION };
    switch ( parms->stage ) {
        case STAGE_START:
            LookAtEnemy( 100.0f );
            FaceEnemy();
            waitActionName = "melee_attack";
            SetAnimState( ANIMCHANNEL_TORSO, "Torso_MeleeAttack", 8 );
            parms->stage = STAGE_WAIT_ACTION;
            return SRESULT_WAIT;
        case STAGE_WAIT_ACTION:
            if ( !ActionDone( "melee_attack" ) ) {
                return SRESULT_WAIT;
            }
            LookAtEnemy( 1.0f );
            return SRESULT_DONE;
    }
    return SRESULT_ERROR;
}