2 files changed, 38 insertions, 1 deletions

diff --git a/src/weapons/Weapon.cpp b/src/weapons/Weapon.cpp
index 056c584a..f83f2271 100644
--- a/src/weapons/Weapon.cpp
+++ b/src/weapons/Weapon.cpp
@@ -3,6 +3,8 @@
 #include "Weapon.h"
 #include "Timer.h"
 #include "WeaponInfo.h"
+#include "Ped.h"
+#include "World.h"
 
 WRAPPER bool CWeapon::Fire(CEntity*, CVector*) { EAXJMP(0x55C380); }
 WRAPPER void CWeapon::FireFromCar(CAutomobile *car, bool left) { EAXJMP(0x55C940); }
@@ -50,7 +52,42 @@ CWeapon::IsTypeMelee(void)
 	return m_eWeaponType == WEAPONTYPE_UNARMED || m_eWeaponType == WEAPONTYPE_BASEBALLBAT;
 }
 
+bool
+CWeapon::HitsGround(CEntity *holder, CVector *firePos, CEntity *aimingTo)
+{
+	if (!holder->IsPed() || !((CPed*)holder)->m_pSeekTarget)
+		return false;
+
+	CWeaponInfo *ourType = CWeaponInfo::GetWeaponInfo(m_eWeaponType);
+	CVector adjustedOffset = ourType->m_vecFireOffset;
+	adjustedOffset.z += 0.6f;
+
+	CVector point1, point2;
+	CEntity *foundEnt = nil;
+	CColPoint foundCol;
+
+	if (firePos)
+		point1 = *firePos;
+	else
+		point1 = holder->GetMatrix() * adjustedOffset;
+
+	CEntity *aimEntity = aimingTo ? aimingTo : ((CPed*)holder)->m_pSeekTarget;
+	point2 = aimEntity->GetPosition();
+	point2.z += 0.6f;
+
+	CWorld::ProcessLineOfSight(point1, point2, foundCol, foundEnt, true, false, false, false, false, false, false);
+	if (foundEnt && foundEnt->IsBuilding()) {
+		// That was supposed to be Magnitude, according to leftover code in assembly
+		float diff = (foundCol.point.z - point1.z);
+		if (diff < 0.0f && diff > -3.0f)
+			return true;
+	}
+
+	return false;
+}
+
 STARTPATCHES
 	InjectHook(0x55C330, &CWeapon::Initialise, PATCH_JUMP);
 	InjectHook(0x5639D0, &CWeapon::Reload, PATCH_JUMP);
+	InjectHook(0x564890, &CWeapon::HitsGround, PATCH_JUMP);
 ENDPATCHES
\ No newline at end of file
diff --git a/src/weapons/Weapon.h b/src/weapons/Weapon.h
index 71c1f344..4916284f 100644
--- a/src/weapons/Weapon.h
+++ b/src/weapons/Weapon.h
@@ -70,7 +70,7 @@ public:
 	void AddGunshell(CEntity*, CVector const&, CVector2D const&, float);
 	bool IsTypeMelee(void);
 	bool IsType2Handed(void);
-
 	static void DoTankDoomAiming(CEntity *playerVehicle, CEntity *playerPed, CVector *start, CVector *end);
+	bool HitsGround(CEntity* holder, CVector* firePos, CEntity* aimingTo);
 };
 static_assert(sizeof(CWeapon) == 0x18, "CWeapon: error");