DebugOverlay (#106)

* DebugOverlay

yea

* default enable_debug_overlays to 0, and make FCVAR_CHEAT

Co-authored-by: BobTheBob <32057864+BobTheBob9@users.noreply.github.com>

5 files changed, 173 insertions, 1 deletions

diff --git a/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj b/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj
index be70b70b..13f907e1 100644
--- a/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj
+++ b/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj
@@ -114,6 +114,7 @@
     <ClInclude Include="buildainfile.h" />
     <ClInclude Include="chatcommand.h" />
     <ClInclude Include="clientchathooks.h" />
+    <ClInclude Include="debugoverlay.h" />
     <ClInclude Include="clientruihooks.h" />
     <ClInclude Include="clientvideooverrides.h" />
     <ClInclude Include="localchatwriter.h" />
@@ -580,6 +581,7 @@
     <ClCompile Include="context.cpp" />
     <ClCompile Include="convar.cpp" />
     <ClCompile Include="cvar.cpp" />
+    <ClCompile Include="debugoverlay.cpp" />
     <ClCompile Include="dedicated.cpp" />
     <ClCompile Include="dedicatedmaterialsystem.cpp" />
     <ClCompile Include="dllmain.cpp" />
diff --git a/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj.filters b/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj.filters
index 4089f1ca..e9c52d1d 100644
--- a/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj.filters
+++ b/NorthstarDedicatedTest/NorthstarDedicatedTest.vcxproj.filters
@@ -1488,6 +1488,9 @@
     <ClInclude Include="plugin_abi.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="debugoverlay.h">
+      <Filter>Header Files\Client</Filter>
+    </ClInclude>
     <ClInclude Include="clientvideooverrides.h">
       <Filter>Header Files\Client</Filter>
     </ClInclude>
@@ -1658,6 +1661,9 @@
     <ClCompile Include="plugins.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="debugoverlay.cpp">
+      <Filter>Source Files\Client</Filter>
+    </ClCompile>
     <ClCompile Include="clientvideooverrides.cpp">
       <Filter>Source Files\Client</Filter>
     </ClCompile>
diff --git a/NorthstarDedicatedTest/debugoverlay.cpp b/NorthstarDedicatedTest/debugoverlay.cpp
new file mode 100644
index 00000000..9620609f
--- /dev/null
+++ b/NorthstarDedicatedTest/debugoverlay.cpp
@@ -0,0 +1,159 @@
+#include "pch.h"
+#include "debugoverlay.h"
+#include "dedicated.h"
+#include "cvar.h"
+
+struct Vector3
+{
+	float x, y, z;
+};
+
+struct QAngle
+{
+	float x, y, z, w;
+};
+
+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;
+	__int64 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;
+};
+
+// this is in cvar.h, don't need it here
+/*class Color
+{
+  public:
+	Color(int r, int g, int b, int a)
+	{
+		_color[0] = (unsigned char)r;
+		_color[1] = (unsigned char)g;
+		_color[2] = (unsigned char)b;
+		_color[3] = (unsigned char)a;
+	}
+
+  private:
+	unsigned char _color[4];
+};*/
+
+static HMODULE sEngineModule;
+
+typedef void (*DrawOverlayType)(OverlayBase_t* a1);
+DrawOverlayType DrawOverlay;
+
+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;
+
+// engine.dll+0xABCB0
+void __fastcall DrawOverlayHook(OverlayBase_t* pOverlay)
+{
+	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));
+}
+
+void InitialiseDebugOverlay(HMODULE baseAddress)
+{
+	if (IsDedicated())
+		return;
+
+	HookEnabler hook;
+	ENABLER_CREATEHOOK(hook, (char*)baseAddress + 0xABCB0, &DrawOverlayHook, reinterpret_cast<LPVOID*>(&DrawOverlay));
+
+	RenderLine = reinterpret_cast<RenderLineType>((char*)baseAddress + 0x192A70);
+
+	RenderBox = reinterpret_cast<RenderBoxType>((char*)baseAddress + 0x192520);
+
+	RenderWireframeBox = reinterpret_cast<RenderBoxType>((char*)baseAddress + 0x193DA0);
+
+	sEngineModule = baseAddress;
+
+	// not in g_pCVar->FindVar by this point for whatever reason, so have to get from memory
+	ConVar* Cvar_enable_debug_overlays = (ConVar*)((char*)baseAddress + 0x10DB0990);
+	Cvar_enable_debug_overlays->SetValue(false);
+	Cvar_enable_debug_overlays->m_pszDefaultValue = (char*)"0";
+	Cvar_enable_debug_overlays->AddFlags(FCVAR_CHEAT);
+}
\ No newline at end of file
diff --git a/NorthstarDedicatedTest/debugoverlay.h b/NorthstarDedicatedTest/debugoverlay.h
new file mode 100644
index 00000000..a300018c
--- /dev/null
+++ b/NorthstarDedicatedTest/debugoverlay.h
@@ -0,0 +1,3 @@
+#pragma once
+
+void InitialiseDebugOverlay(HMODULE baseAddress);
\ No newline at end of file
diff --git a/NorthstarDedicatedTest/dllmain.cpp b/NorthstarDedicatedTest/dllmain.cpp
index b5e06e3a..26503f52 100644
--- a/NorthstarDedicatedTest/dllmain.cpp
+++ b/NorthstarDedicatedTest/dllmain.cpp
@@ -39,6 +39,7 @@
 #include "scriptservertoclientstringcommand.h"
 #include "plugin_abi.h"
 #include "plugins.h"
+#include "debugoverlay.h"
 #include "clientvideooverrides.h"
 #include "clientruihooks.h"
 #include <string.h>
@@ -229,6 +230,7 @@ bool InitialiseNorthstar()
 
 	// client-exclusive patches
 	{
+
 		AddDllLoadCallbackForClient("tier0.dll", InitialiseTier0LanguageHooks);
 		AddDllLoadCallbackForClient("client.dll", InitialiseClientSquirrel);
 		AddDllLoadCallbackForClient("client.dll", InitialiseSourceConsole);
@@ -248,7 +250,7 @@ bool InitialiseNorthstar()
 		AddDllLoadCallbackForClient("client.dll", InitialiseScriptServerToClientStringCommands);
 		AddDllLoadCallbackForClient("client.dll", InitialiseClientVideoOverrides);
 		AddDllLoadCallbackForClient("engine.dll", InitialiseEngineClientRUIHooks);
-
+		AddDllLoadCallbackForClient("engine.dll", InitialiseDebugOverlay);
 		// audio hooks
 		AddDllLoadCallbackForClient("client.dll", InitialiseMilesAudioHooks);
 	}