メモ書き - TESObjectREFR::IsPlayable

TESV.exeをボーっと見てたら、こんなコードがあった。

CPU Disasm
Address   Hex dump          Command                                  Comments
0047A5D2  |.  0FB641 12     |MOVZX EAX,BYTE PTR DS:[ECX+12]          ; Switch (cases 1F..2A, 4 exits)
0047A5D6  |.  83E8 1F       |SUB EAX,1F
0047A5D9  |.  74 33         |JZ SHORT 0047A60E
0047A5DB  |.  83E8 0A       |SUB EAX,0A
0047A5DE  |.  74 1E         |JZ SHORT 0047A5FE
0047A5E0  |.  83E8 01       |SUB EAX,1
0047A5E3  |.  74 0B         |JZ SHORT 0047A5F0
0047A5E5  |.  8B01          |MOV EAX,DWORD PTR DS:[ECX]              ; Default case of switch TESV.47A5D2
0047A5E7  |.  8B50 64       |MOV EDX,DWORD PTR DS:[EAX+64]
0047A5EA  |.  FFD2          |CALL EDX
0047A5EC  |.  84C0          |TEST AL,AL
0047A5EE  |.  EB 29         |JMP SHORT 0047A619
0047A5F0  |>  8A81 90000000 |MOV AL,BYTE PTR DS:[ECX+90]             ; Case 2A of switch TESV.47A5D2
0047A5F6  |.  D0E8          |SHR AL,1
0047A5F8  |.  F6D0          |NOT AL
0047A5FA  |.  A8 01         |TEST AL,01
0047A5FC  |.  EB 1B         |JMP SHORT 0047A619
0047A5FE  |>  8A89 F2000000 |MOV CL,BYTE PTR DS:[ECX+0F2]            ; Case 29 of switch TESV.47A5D2
0047A604  |.  C0E9 07       |SHR CL,7
0047A607  |.  F6D1          |NOT CL
0047A609  |.  F6C1 01       |TEST CL,01
0047A60C  |.  EB 0B         |JMP SHORT 0047A619
0047A60E  |>  8B91 84000000 |MOV EDX,DWORD PTR DS:[ECX+84]           ; Case 1F of switch TESV.47A5D2
0047A614  |.  D1EA          |SHR EDX,1
0047A616  |.  F6C2 01       |TEST DL,01
0047A619  |>  0F84 8A000000 |JZ 0047A6A9

分かりやすいようにC++で書くと、こんな感じ

TESForm* thisForm;
bool IsPlayable;
if (thisForm->formType == kFormType_Ammo)
{
    TESAmmo* ammo = (TESAmmo*)thisForm;
    IsPlayable = (ammo->settings.flags & 2) == 0;
}
else if (thisForm->formType == kFormType_Weapon)
{
    TESObjectWeap* weap = (TESObjectWEAP*)thisForm;
    IsPlayable = (weap->gameData.flags2 & weap->gameData.kFlags_NotPlayable) == 0;
}
else if (thisForm->formType == kFormType_Light)
{
    TESObjectLIGH* ligh = (TESObjectLIGH*)thisForm;
    IsPlayable = (ligh->unk78.unk0C & 2) != 0;
}
else
{
    IsPlayable = thisForm->GetFlag00020000();
}

これでやっと、bool TESObjectREFR::IsPlayable(void) が作れるんじゃないかな！！