1 files changed, 141 insertions, 0 deletions
diff --git a/NorthstarDLL/client/debugoverlay.cpp b/NorthstarDLL/client/debugoverlay.cpp
new file mode 100644
index 00000000..dd273227
--- /dev/null
+++ b/NorthstarDLL/client/debugoverlay.cpp
@@ -0,0 +1,141 @@
+#include "pch.h"
+#include "dedicated/dedicated.h"
+#include "core/convar/cvar.h"
+#include "core/math/vector.h"
+
+AUTOHOOK_INIT()
+
+enum OverlayType_t
+{
+	OVERLAY_BOX = 0,
+	OVERLAY_SPHERE,
+	OVERLAY_LINE,
+	OVERLAY_TRIANGLE,
+	OVERLAY_SWEPT_BOX,
+	OVERLAY_BOX2,
+	OVERLAY_CAPSULE
+};
+
+struct OverlayBase_t
+{
+	OverlayBase_t()
+	{
+		m_Type = OVERLAY_BOX;
+		m_nServerCount = -1;
+		m_nCreationTick = -1;
+		m_flEndTime = 0.0f;
+		m_pNextOverlay = NULL;
+	}
+
+	OverlayType_t m_Type; // What type of overlay is it?
+	int m_nCreationTick; // Duration -1 means go away after this frame #
+	int m_nServerCount; // Latch server count, too
+	float m_flEndTime; // When does this box go away
+	OverlayBase_t* m_pNextOverlay;
+	void* m_pUnk;
+};
+
+struct OverlayLine_t : public OverlayBase_t
+{
+	OverlayLine_t()
+	{
+		m_Type = OVERLAY_LINE;
+	}
+
+	Vector3 origin;
+	Vector3 dest;
+	int r;
+	int g;
+	int b;
+	int a;
+	bool noDepthTest;
+};
+
+struct OverlayBox_t : public OverlayBase_t
+{
+	OverlayBox_t()
+	{
+		m_Type = OVERLAY_BOX;
+	}
+
+	Vector3 origin;
+	Vector3 mins;
+	Vector3 maxs;
+	QAngle angles;
+	int r;
+	int g;
+	int b;
+	int a;
+};
+
+static HMODULE sEngineModule;
+
+typedef void (*RenderLineType)(Vector3 v1, Vector3 v2, Color c, bool bZBuffer);
+static RenderLineType RenderLine;
+typedef void (*RenderBoxType)(Vector3 vOrigin, QAngle angles, Vector3 vMins, Vector3 vMaxs, Color c, bool bZBuffer, bool bInsideOut);
+static RenderBoxType RenderBox;
+static RenderBoxType RenderWireframeBox;
+
+// clang-format off
+AUTOHOOK(DrawOverlay, engine.dll + 0xABCB0, 
+void, __fastcall, (OverlayBase_t * pOverlay))
+// clang-format on
+{
+	EnterCriticalSection((LPCRITICAL_SECTION)((char*)sEngineModule + 0x10DB0A38)); // s_OverlayMutex
+
+	void* pMaterialSystem = *(void**)((char*)sEngineModule + 0x14C675B0);
+
+	switch (pOverlay->m_Type)
+	{
+	case OVERLAY_LINE:
+	{
+		OverlayLine_t* pLine = static_cast<OverlayLine_t*>(pOverlay);
+		RenderLine(pLine->origin, pLine->dest, Color(pLine->r, pLine->g, pLine->b, pLine->a), pLine->noDepthTest);
+	}
+	break;
+	case OVERLAY_BOX:
+	{
+		OverlayBox_t* pCurrBox = static_cast<OverlayBox_t*>(pOverlay);
+		if (pCurrBox->a > 0)
+		{
+			RenderBox(
+				pCurrBox->origin,
+				pCurrBox->angles,
+				pCurrBox->mins,
+				pCurrBox->maxs,
+				Color(pCurrBox->r, pCurrBox->g, pCurrBox->b, pCurrBox->a),
+				false,
+				false);
+		}
+		if (pCurrBox->a < 255)
+		{
+			RenderWireframeBox(
+				pCurrBox->origin,
+				pCurrBox->angles,
+				pCurrBox->mins,
+				pCurrBox->maxs,
+				Color(pCurrBox->r, pCurrBox->g, pCurrBox->b, 255),
+				false,
+				false);
+		}
+	}
+	break;
+	}
+	LeaveCriticalSection((LPCRITICAL_SECTION)((char*)sEngineModule + 0x10DB0A38));
+}
+
+ON_DLL_LOAD_CLIENT_RELIESON("engine.dll", DebugOverlay, ConVar, (CModule module))
+{
+	AUTOHOOK_DISPATCH()
+
+	RenderLine = module.Offset(0x192A70).As<RenderLineType>();
+	RenderBox = module.Offset(0x192520).As<RenderBoxType>();
+	RenderWireframeBox = module.Offset(0x193DA0).As<RenderBoxType>();
+	sEngineModule = reinterpret_cast<HMODULE>(module.m_nAddress);
+
+	// not in g_pCVar->FindVar by this point for whatever reason, so have to get from memory
+	ConVar* Cvar_enable_debug_overlays = module.Offset(0x10DB0990).As<ConVar*>();
+	Cvar_enable_debug_overlays->SetValue(false);
+	Cvar_enable_debug_overlays->m_pszDefaultValue = (char*)"0";
+	Cvar_enable_debug_overlays->AddFlags(FCVAR_CHEAT);
+}