source/friend/fgary.cpp

@@ -0,0 +1,82 @@
+/*=========================================================================
+
+	fgary.cpp
+
+	Author:		CRB
+	Created: 
+	Project:	Spongebob
+	Purpose: 
+
+	Copyright (c) 2000 Climax Development Ltd
+
+===========================================================================*/
+
+#ifndef __FRIEND_FRIEND_H__
+#include "friend\friend.h"
+#endif
+
+#ifndef __GAME_GAME_H__
+#include "game\game.h"
+#endif
+
+
+void CNpcFriend::processGaryMovement( int _frames )
+{
+	s8 multiplier = -1 + ( 2 * m_extension );
+	s32 maxHeight = 20;
+	s32 fallSpeed = 3;
+	s8 yMovement = fallSpeed * _frames;
+	s8 groundHeight;
+
+	// check vertical collision
+
+	groundHeight = m_layerCollision->getHeightFromGround( Pos.vx, Pos.vy, yMovement + 16 );
+
+	if ( groundHeight <= 0 )
+	{
+		// groundHeight <= 0  indicates either on ground or below ground
+
+		// check horizontal collision
+
+		if ( m_layerCollision->getHeightFromGround( Pos.vx + ( multiplier * _frames ), Pos.vy ) < -maxHeight )
+		{
+			// reverse direction
+
+			m_extension = !m_extension;
+		}
+		else
+		{
+			// make sure we are on the ground, not below it
+
+			Pos.vy += groundHeight;
+
+			Pos.vx += multiplier * _frames;
+		}
+	}
+	else
+	{
+		// above ground
+
+		if ( groundHeight < yMovement )
+		{
+			// colliding with ground
+
+			Pos.vy += groundHeight;
+
+			if ( m_layerCollision->getHeightFromGround( Pos.vx + ( multiplier * _frames ), Pos.vy ) < -maxHeight )
+			{
+				// reverse direction
+
+				m_extension = !m_extension;
+			}
+			else
+			{
+				Pos.vx += multiplier * _frames;
+			}
+		}
+		else
+		{
+			Pos.vy += yMovement;
+		}
+	}
+}