From ca5a77f9901d728b34035686126df025474632fd Mon Sep 17 00:00:00 2001
From: MisterY52 <11368116+MisterY52@users.noreply.github.com>
Date: Sat, 13 Aug 2022 09:37:05 +0200
Subject: [PATCH] Added get bone position by hitbox

---
 apex_dma/Game.cpp     | 38 +++++++++++++++++++++++++++++++++++++-
 apex_dma/Game.h       |  1 +
 apex_dma/apex_dma.cpp |  4 ++--
 apex_dma/offsets.h    |  2 ++
 4 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/apex_dma/Game.cpp b/apex_dma/Game.cpp
index 3742226..67a6e6b 100644
--- a/apex_dma/Game.cpp
+++ b/apex_dma/Game.cpp
@@ -125,6 +125,42 @@ Vector Entity::getBonePosition(int id)
 	return bone;
 }
 
+//https://www.unknowncheats.me/forum/apex-legends/496984-getting-hitbox-positions-cstudiohdr-externally.html
+//https://www.unknowncheats.me/forum/3499185-post1334.html
+Vector Entity::getBonePositionByHitbox(int id)
+{
+	Vector origin = getPosition();
+ 
+    //BoneByHitBox
+	uint64_t Model = *(uint64_t*)(buffer + OFFSET_STUDIOHDR);
+    
+	//get studio hdr
+	uint64_t StudioHdr;
+	apex_mem.Read<uint64_t>(Model + 0x8, StudioHdr);
+ 
+    //get hitbox array
+	int HitBoxsArray_set;
+	apex_mem.Read<int>(StudioHdr + 0xB4,HitBoxsArray_set);
+	uint64_t HitBoxsArray = StudioHdr + HitBoxsArray_set;
+ 
+	int HitboxIndex;
+	apex_mem.Read<int>(HitBoxsArray + 0x8, HitboxIndex);
+ 
+	int Bone;
+	apex_mem.Read<int>(HitBoxsArray + HitboxIndex + (id * 0x2C), Bone);
+
+	if(Bone < 0 || Bone > 255)
+		return Vector();
+ 
+    //hitpos
+	uint64_t BoneArray = *(uint64_t*)(buffer + OFFSET_BONES);
+ 
+	matrix3x4_t Matrix = {};
+	apex_mem.Read<matrix3x4_t>(BoneArray + Bone * sizeof(matrix3x4_t), Matrix);
+ 
+	return Vector(Matrix.m_flMatVal[0][3] + origin.x, Matrix.m_flMatVal[1][3] + origin.y, Matrix.m_flMatVal[2][3] + origin.z);
+}
+
 QAngle Entity::GetSwayAngles()
 {
 	return *(QAngle*)(buffer + OFFSET_BREATH_ANGLES);
@@ -264,7 +300,7 @@ QAngle CalculateBestBoneAim(Entity& from, uintptr_t t, float max_fov)
 	}
 	
 	Vector LocalCamera = from.GetCamPos();
-	Vector TargetBonePosition = target.getBonePosition(bone);
+	Vector TargetBonePosition = target.getBonePositionByHitbox(bone);
 	QAngle CalculatedAngles = QAngle(0, 0, 0);
 	
 	WeaponXEntity curweap = WeaponXEntity();
diff --git a/apex_dma/Game.h b/apex_dma/Game.h
index a39c0cc..7b3c4bc 100644
--- a/apex_dma/Game.h
+++ b/apex_dma/Game.h
@@ -44,6 +44,7 @@ public:
 	void SetViewAngles(SVector angles);
 	void SetViewAngles(QAngle& angles);
 	Vector getBonePosition(int id);
+	Vector getBonePositionByHitbox(int id);
 	bool Observing(uint64_t entitylist);
 	void get_name(uint64_t g_Base, uint64_t index, char* name);
 };
diff --git a/apex_dma/apex_dma.cpp b/apex_dma/apex_dma.cpp
index b147a65..dfa881a 100644
--- a/apex_dma/apex_dma.cpp
+++ b/apex_dma/apex_dma.cpp
@@ -387,7 +387,7 @@ static void EspLoop()
 						if (bs.x > 0 && bs.y > 0)
 						{
 							Vector hs = Vector();
-							Vector HeadPosition = Target.getBonePosition(8);
+							Vector HeadPosition = Target.getBonePositionByHitbox(0);
 							WorldToScreen(HeadPosition, m.matrix, 1920, 1080, hs);
 							float height = abs(abs(hs.y) - abs(bs.y));
 							float width = height / 2.0f;
@@ -462,7 +462,7 @@ static void EspLoop()
 						if (bs.x > 0 && bs.y > 0)
 						{
 							Vector hs = Vector();
-							Vector HeadPosition = Target.getBonePosition(8);
+							Vector HeadPosition = Target.getBonePositionByHitbox(0);
 							WorldToScreen(HeadPosition, m.matrix, 1920, 1080, hs);
 							float height = abs(abs(hs.y) - abs(bs.y));
 							float width = height / 2.0f;
diff --git a/apex_dma/offsets.h b/apex_dma/offsets.h
index 7c10803..c5cb4bf 100644
--- a/apex_dma/offsets.h
+++ b/apex_dma/offsets.h
@@ -27,6 +27,7 @@
 
     #define OFFSET_ORIGIN				0x014c //m_vecAbsOrigin
     #define OFFSET_BONES				0x0e88 + 0x48 //m_nForceBone + 0x48
+    #define OFFSET_STUDIOHDR            0x10d8
     #define OFFSET_AIMPUNCH				0x23f8 //m_currentFrameLocalPlayer.m_vecPunchWeapon_Angle
     #define OFFSET_CAMERAPOS			0x1ea0 //CPlayer!camera_origin
     #define OFFSET_VIEWANGLES			0x24f4 - 0x14 //m_ammoPoolCapacity - 0x14
@@ -74,6 +75,7 @@
 
     #define OFFSET_ORIGIN				0x014c //m_vecAbsOrigin
     #define OFFSET_BONES				0x0e88 + 0x48 //m_nForceBone + 0x48
+    #define OFFSET_STUDIOHDR            0x10d8
     #define OFFSET_AIMPUNCH				0x23f8 //m_currentFrameLocalPlayer.m_vecPunchWeapon_Angle
     #define OFFSET_CAMERAPOS			0x1ea0 //CPlayer!camera_origin
     #define OFFSET_VIEWANGLES			0x24f4 - 0x14 //m_ammoPoolCapacity - 0x14