ac-decomp/src/actor/ac_train0_move.c_inc

static void aTR0_ctrl_engineer(ACTOR* actor, GAME* game) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;
    GAME_PLAY* play = (GAME_PLAY*)game;
    ACTOR* ac_p;

    ac_p = (ACTOR*)train0->arg3;

    if (ac_p == NULL) {
        if (CLIP(npc_clip)->setupActor_proc(play, SP_NPC_ENGINEER, -1, -1, -1, -1, -1, 0, 0) == TRUE) {
            train0->arg3 = (int)Actor_info_fgName_search(&play->actor_info, SP_NPC_ENGINEER, ACTOR_PART_NPC);
        }
    } else {
        ac_p->world.position.x = -40.0f + train0->actor_class.world.position.x;
        ac_p->world.position.y = 47.0f + train0->actor_class.world.position.y;
        ac_p->world.position.z = 20.0f + train0->actor_class.world.position.z;
    }
}

static void aTR0_set_effect(ACTOR* actor, GAME* game) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;
    int calc;
    xyz_t pos;
    xyz_t clip_pos;

    if (train0->arg1 <= 0) {
        if (train0->actor_class.speed >= 1.0f) {
            calc = (12.0f / train0->actor_class.speed);
            train0->arg1 = calc;
        } else {
            train0->arg1 = 12;
        }
        xyz_t_move(&pos, &train0->actor_class.world.position);
        pos.x += 36.0f;
        pos.y += 110.0f;

        if (mEv_CheckTitleDemo() == mEv_TITLEDEMO_NONE) {
            eEC_CLIP->effect_make_proc(eEC_EFFECT_KISHA_KEMURI, pos, 1, 0, game, train0->actor_class.npc_id, 0, 0);
        }
    } else {
        train0->arg1--;
    }
}

static void aTR0_steam_work_sub(ACTOR* actor, GAME* game, int x_idx) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;
    xyz_t pos;
    int unk2c0;
    static f32 setX[] = { 15.0f, 22.0f };
    static s16 angl[] = { 0xd000, 0x0400 };

    pos.x = train0->actor_class.world.position.x + setX[x_idx];
    pos.y = train0->actor_class.world.position.y + 21.0f;
    pos.z = train0->actor_class.world.position.z + 42.0f;
    unk2c0 = train0->arg2;
    if (mEv_CheckTitleDemo() == mEv_TITLEDEMO_NONE) {
        (*Common_Get(clip.effect_clip)->effect_make_proc)(eEC_EFFECT_STEAM, pos, 1, angl[x_idx], game,
                                                          train0->actor_class.npc_id, 0, 0);
    }
    unk2c0++;
    train0->arg2 = unk2c0 % 4;
}

static void aTR0_steam_work(ACTOR* actor, GAME* game) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;

    if (train0->keyframe_state == cKF_STATE_STOPPED) {
        if ((train0->keyframe_saved_keyframe >= 2) && (train0->keyframe_saved_keyframe <= 5)) {
            aTR0_steam_work_sub(actor, game, 0);
        }
        if ((train0->keyframe_saved_keyframe >= 13) && (train0->keyframe_saved_keyframe <= 16)) {
            aTR0_steam_work_sub(actor, game, 1);
        }
    }
}

static f32 calc_speed1(ACTOR* actor) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;

    if (F32_IS_ZERO(train0->arg1_f)) {
        return 0.8f + train0->actor_class.speed;
    }

    if (train0->arg1_f < train0->actor_class.speed) {
        return train0->actor_class.speed + (0.5f * -(train0->arg1_f - train0->actor_class.speed));
    }

    return train0->actor_class.speed;
}

static f32 calc_speed2(ACTOR* actor) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;
    int should_stop = F32_IS_ZERO(train0->actor_class.speed);

    return should_stop == FALSE ? train0->actor_class.speed : -0.23f;
}

static void aTR0_ctrl_back_car(ACTOR* actor) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;

    f32 tr_back_calc = train0->arg0_f;
    f32 base_x_pos = -125.0f + train0->actor_class.world.position.x;
    tr_back_calc += 0.5f * train0->arg1_f;

    if ((tr_back_calc - base_x_pos) > 2.0f) {
        train0->arg1_f = calc_speed2(actor);
        train0->arg0_f = 2.0f + base_x_pos;
    } else if ((tr_back_calc - base_x_pos) <= 0.0f) {
        train0->arg1_f = calc_speed1(actor);
        train0->arg0_f = base_x_pos;
    } else {
        chase_f(&train0->arg1_f, 0.0f, 0.0025f);
        train0->arg0_f = tr_back_calc;
    }
}

static void aTR0_animation(ACTOR* actor) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;

    int av = cKF_STATE_NONE;
    int cur_frame = train0->keyframe.frame_control.current_frame;
    cKF_SkeletonInfo_R_play(&train0->keyframe);

    if (cur_frame != train0->keyframe_saved_keyframe) {
        train0->keyframe_saved_keyframe = cur_frame;
        av = cKF_STATE_STOPPED;
    }
    train0->keyframe_state = av;
}

static void aTR0_move(ACTOR* actor) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;
    xyz_t pos;

    if (train0->action != Common_Get(train_action)) {
        train0->action = Common_Get(train_action);
    }
    pos = Common_Get(train_position);
    train0->actor_class.world.position.x = pos.x;
    train0->actor_class.world.position.z = pos.z;
    train0->actor_class.speed = Common_Get(train_speed);
}

static void aTR0_delcheck(ACTOR* actor, GAME* game) {
    GAME_PLAY* play = (GAME_PLAY*)game;
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;

    int x;
    int z;
    int abs_x;
    xyz_t pos;

    pos = train0->actor_class.world.position;

    mFI_Wpos2BlockNum(&x, &z, pos);
    x -= play->block_table.block_x;
    abs_x = x >= 0 ? x : -x;

    if ((abs_x >= 2) || (z != play->block_table.block_z) || (train0->action == 0)) {
        if (train0->arg3 != 0) {
            Actor_delete((ACTOR*)train0->arg3);
        }
        Actor_delete(actor->child_actor);
        Actor_delete(actor);
    }
}

static void aTR0_actor_move(ACTOR* actor, GAME* game) {
    TRAIN0_ACTOR* train0 = (TRAIN0_ACTOR*)actor;
    GAME_PLAY* play = (GAME_PLAY*)game;

    f32 speed;
    aTR0_animation(actor);
    aTR0_move(actor);

    if (!F32_IS_ZERO(train0->actor_class.speed)) {
        aTR0_set_effect(actor, game);
        aTR0_steam_work(actor, game);
    }

    if (mEv_CheckTitleDemo() == mEv_TITLEDEMO_START1) {
        train0->arg0_f = -125.0f + train0->actor_class.world.position.x;
    } else {
        aTR0_ctrl_back_car(actor);
    }

    aTR0_ctrl_engineer(actor, game);

    speed = (train0->actor_class.speed / 40.0f) * 10.0f;

    if (speed >= 0.5f) {
        speed = 0.5f;
    }

    train0->keyframe.frame_control.speed = speed;
    aTR0_delcheck(&train0->actor_class, game);
}