1 files changed, 199 insertions, 0 deletions
diff --git a/game/server/NextBot/simple_bot.cpp b/game/server/NextBot/simple_bot.cpp
new file mode 100644
index 0000000..dbae239
--- /dev/null
+++ b/game/server/NextBot/simple_bot.cpp
@@ -0,0 +1,199 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+// simple_bot.cpp
+// A simple bot
+// Michael Booth, February 2009
+
+#include "cbase.h"
+#include "simple_bot.h"
+#include "nav_mesh.h"
+
+
+//-----------------------------------------------------------------------------------------------------
+// Command to add a Simple Bot where your crosshairs are aiming
+//-----------------------------------------------------------------------------------------------------
+CON_COMMAND_F( simple_bot_add, "Add a simple bot.", FCVAR_CHEAT )
+{
+	CBasePlayer *player = UTIL_GetCommandClient();
+	if ( !player )
+	{
+		return;
+	}
+
+	Vector forward;
+	player->EyeVectors( &forward );
+
+	trace_t result;
+	UTIL_TraceLine( player->EyePosition(), player->EyePosition() + 999999.9f * forward, MASK_BLOCKLOS_AND_NPCS|CONTENTS_IGNORE_NODRAW_OPAQUE, player, COLLISION_GROUP_NONE, &result );
+	if ( !result.DidHit() )
+	{
+		return;
+	}
+
+	CSimpleBot *bot = static_cast< CSimpleBot * >( CreateEntityByName( "simple_bot" ) );
+	if ( bot )
+	{
+		Vector forward = player->GetAbsOrigin() - result.endpos;
+		forward.z = 0.0f;
+		forward.NormalizeInPlace();
+
+		QAngle angles;
+		VectorAngles( forward, angles );
+
+		bot->SetAbsAngles( angles );
+		bot->SetAbsOrigin( result.endpos + Vector( 0, 0, 10.0f ) );
+
+		DispatchSpawn( bot );
+	}
+}
+
+
+//-----------------------------------------------------------------------------------------------------
+// The Simple Bot
+//-----------------------------------------------------------------------------------------------------
+LINK_ENTITY_TO_CLASS( simple_bot, CSimpleBot );
+
+#ifndef TF_DLL
+PRECACHE_REGISTER( simple_bot );
+#endif
+
+
+//-----------------------------------------------------------------------------------------------------
+CSimpleBot::CSimpleBot()
+{
+	ALLOCATE_INTENTION_INTERFACE( CSimpleBot );
+
+	m_locomotor = new NextBotGroundLocomotion( this );
+}
+
+
+//-----------------------------------------------------------------------------------------------------
+CSimpleBot::~CSimpleBot()
+{
+	DEALLOCATE_INTENTION_INTERFACE;
+
+	if ( m_locomotor )
+		delete m_locomotor;
+}
+
+//-----------------------------------------------------------------------------------------------------
+void CSimpleBot::Precache()
+{
+	BaseClass::Precache();
+
+#ifndef DOTA_DLL
+	PrecacheModel( "models/humans/group01/female_01.mdl" );
+#endif
+}
+
+
+//-----------------------------------------------------------------------------------------------------
+void CSimpleBot::Spawn( void )
+{
+	BaseClass::Spawn();
+
+#ifndef DOTA_DLL
+	SetModel( "models/humans/group01/female_01.mdl" );
+#endif
+}
+
+
+//---------------------------------------------------------------------------------------------
+// The Simple Bot behaviors
+//---------------------------------------------------------------------------------------------
+/**
+ * For use with TheNavMesh->ForAllAreas()
+ * Find the Nth area in the sequence
+ */
+class SelectNthAreaFunctor
+{
+public:
+	SelectNthAreaFunctor( int count )
+	{
+		m_count = count;
+		m_area = NULL;
+	}
+
+	bool operator() ( CNavArea *area )
+	{
+		m_area = area;
+		return ( m_count-- > 0 );
+	}
+
+	int m_count;
+	CNavArea *m_area;
+};
+
+
+//---------------------------------------------------------------------------------------------
+/**
+ * This action causes the bot to pick a random nav area in the mesh and move to it, then
+ * pick another, etc.
+ * Actions usually each have their own .cpp/.h file and are organized into folders since there
+ * are often many of them. For this example, we're keeping everything to a single .cpp/.h file.
+ */
+class CSimpleBotRoam : public Action< CSimpleBot >
+{
+public:
+	//----------------------------------------------------------------------------------
+	// OnStart is called once when the Action first becomes active
+	virtual ActionResult< CSimpleBot >	OnStart( CSimpleBot *me, Action< CSimpleBot > *priorAction )
+	{
+		// smooth out the bot's path following by moving toward a point farther down the path
+		m_path.SetMinLookAheadDistance( 300.0f );
+
+		return Continue();
+	}
+
+
+	//----------------------------------------------------------------------------------
+	// Update is called repeatedly (usually once per server frame) while the Action is active
+	virtual ActionResult< CSimpleBot >	Update( CSimpleBot *me, float interval )
+	{
+		if ( m_path.IsValid() && !m_timer.IsElapsed() ) 
+		{
+			// PathFollower::Update() moves the bot along the path using the bot's ILocomotion and IBody interfaces
+			m_path.Update( me );
+		}
+		else
+		{
+			SelectNthAreaFunctor pick( RandomInt( 0, TheNavMesh->GetNavAreaCount() - 1 ) );
+			TheNavMesh->ForAllAreas( pick );
+
+			if ( pick.m_area )
+			{
+				CSimpleBotPathCost cost( me );
+				m_path.Compute( me, pick.m_area->GetCenter(), cost );
+			}
+
+			// follow this path for a random duration (or until we reach the end)
+			m_timer.Start( RandomFloat( 5.0f, 10.0f ) );
+		}
+
+		return Continue();
+	}
+
+
+	//----------------------------------------------------------------------------------
+	// this is an event handler - many more are available (see declaration of Action< Actor > in NextBotBehavior.h)
+	virtual EventDesiredResult< CSimpleBot > OnStuck( CSimpleBot *me )
+	{
+		// we are stuck trying to follow the current path - invalidate it so a new one is chosen
+		m_path.Invalidate();
+
+		return TryContinue();
+	}
+
+
+	virtual const char *GetName( void ) const	{ return "Roam"; }		// return name of this action
+
+private:
+	PathFollower m_path;
+	CountdownTimer m_timer;
+};
+
+
+//---------------------------------------------------------------------------------------------
+/**
+ * Instantiate the bot's Intention interface and start the initial Action (CSimpleBotRoam in this case)
+ */
+IMPLEMENT_INTENTION_INTERFACE( CSimpleBot, CSimpleBotRoam )