, te felicito por el remake.
Quiero agregar que no hace falta reemplazar ningún archivo ya que se puede hacer dibujando barras directamente con pDrawBarForm.
Dejo el código como lo acomodé yo y se evitan de reemplazar archivos en el cliente :)
#define MAIN_PARTY_MEMBER_COUNT 0x081F6B6C
#define MAIN_VIEWPORT_STRUCT 0x07BC4F04
#define pSetBlend				((void(__cdecl*)(BYTE Mode)) 0x635FD0)
#define pGLSwitchBlend			((void(__cdecl*)()) 0x00636070)
#define pGLSwitch				((void(__cdecl*)()) 0x00635F50)
#define pDrawBarForm			((void(__cdecl*)(float PosX, float PosY, float Width, float Height, float Arg5, int Arg6)) 0x6378A0)
#define pTextThis				((LPVOID(*)()) 0x0041FE10)
#define pSetBackgroundTextColor	((void(__thiscall*)(LPVOID This, int r, int g, int b, int h)) 0x004200B0)
#define pDrawText				((int(__thiscall*)(LPVOID This, int PosX, int PosY, LPCTSTR Text, int Arg4, int Arg5, int * Arg6, int Arg7)) 0x420150)
void PetHPBarRemake(signed int x, signed int y, int nameIndex, signed int hp, signed int hpmax, char a9)
{
	float PosX;
	float PosY;
	float reposicionX = 69.0f;
	float HPWidth;
	if (*(DWORD*)(MAIN_PARTY_MEMBER_COUNT) > 0)
	{
		reposicionX = 69.0f + 80.0f;
	}
	x = 640.0f - reposicionX;
	y = 0;
	PosX = (double)(x + 5);
	PosY = (double)(y + 17);
	//Background 1 oscuro
	pSetBlend(true);
	glColor4f(0.0, 0.0, 0.0, 0.5);
	pDrawBarForm(PosX, PosY, 54.0, 6.0, 0.0, 0);
	//Background 2 claro
	glColor4f(0.5, 1.0, 0.9, 0.3);
	pDrawBarForm(PosX - 1, PosY - 1, 54.0, 6.0, 0.0, 0);
	//HP Bar
	glColor4f(0.3, 1.0, 0.7, 1.0);
	HPWidth = ((double)hp / (double)hpmax) * 49.0;
	pDrawBarForm(PosX + 1, PosY + 1, HPWidth + 1, 2.0, 0.0, 0);
	//Text
	glColor3f(1.0, 1.0, 1.0);
	pSetBackgroundTextColor(pTextThis(), 0, 0, 0, 127);
	pDrawText(pTextThis(), x + 54, y + 4, (LPCTSTR)nameIndex, 0, 0, (LPINT)7, 0);
	pGLSwitchBlend();
	pGLSwitch();
	glColor3f(1.0, 1.0, 1.0);
	pSetBlend(false);
}
void PetSpiritHPBarRemake(signed int x, signed int y, int nameIndex, signed int hp, signed int hpmax, char a9)
{
	float PosX;
	float PosY;
	float reposicionX = 69.0f;
	float HPWidth;
	if (*(DWORD*)(MAIN_PARTY_MEMBER_COUNT) > 0)
	{
		reposicionX = 69.0f + 80.0f;
	}
	if (*(int*)(MAIN_VIEWPORT_STRUCT) + 556 != -1)
	{
		x = 640.0f - reposicionX - 60.0f;
	}
	else
	{
		x = 640.0f - reposicionX;
	}
	y = 0;
	PosX = (double)(x + 5);
	PosY = (double)(y + 17);
	//Background 1 oscuro
	pSetBlend(true);
	glColor4f(0.0, 0.0, 0.0, 0.5);
	pDrawBarForm(PosX, PosY, 54.0, 6.0, 0.0, 0);
	//Background 2 claro
	glColor4f(0.5, 1.0, 0.9, 0.3);
	pDrawBarForm(PosX - 1, PosY - 1, 54.0, 6.0, 0.0, 0);
	//HP Bar
	glColor4f(0.3, 1.0, 0.7, 1.0);
	HPWidth = ((double)hp / (double)hpmax) * 49.0;
	pDrawBarForm(PosX + 1, PosY + 1, HPWidth + 1, 2.0, 0.0, 0);
	//Text
	glColor3f(1.0, 1.0, 1.0);
	pSetBackgroundTextColor(pTextThis(), 0, 0, 0, 127);
	pDrawText(pTextThis(), x + 54, y + 4, (LPCTSTR)nameIndex, 0, 0, (LPINT)7, 0);
	pGLSwitchBlend();
	pGLSwitch();
	glColor3f(1.0, 1.0, 1.0);
	pSetBlend(false);
}