www.pudn.com > IntroductionTo3DGameEngineDesign.rar > Ownship.cs

using System; 
using System.Diagnostics; 
using Microsoft.DirectX; 
using GameEngine; 
using GameAI; 
using VehicleDynamics; 
using Microsoft.DirectX.DirectInput; 
 
namespace SampleGame 
{ 
	/// 
 
	/// Summary description for Ownship. 
	/// 
 
	public class Ownship : Car 
	{ 
		#region Attributes 
		private float ownship_speed = 0.0f; 
		private float wheel = 0.0f; 
		private float gas = 0.0f; 
		private Listener ears = null; 
		private SoundEffect engine_sound = null; 
		private SoundEffect thump = null; 
		private SoundEffect crash = null; 
		private bool first_pass = true; 
		private bool m_bUsingJoystick = false; 
		private bool m_bUsingMouse = false; 
		private bool m_bUsingKeyboard = false; 
		#endregion 
 
		#region Properties 
		public bool UseJoystick { set { m_bUsingJoystick = value; } } 
		public bool UseMouse { set { m_bUsingMouse = value; } } 
		public bool UseKeyboard { set { m_bUsingKeyboard = value; } } 
		#endregion 
 
		public Ownship(System.Windows.Forms.Form form, string name, string meshFile, Vector3 offset, Attitude adjust )  
			: base (name, meshFile, offset, adjust) 
		{ 
			ears = new Listener(form, this); 
			engine_sound = new SoundEffect(@"..\..\Resources\car_idle.wav"); 
			engine_sound.Looping = true; 
			engine_sound.MinFreq = 9700; 
			engine_sound.MaxFreq = 13500; 
			thump = new SoundEffect(@"..\..\Resources\thump.wav"); 
			crash = new SoundEffect(@"..\..\Resources\crash.wav"); 
		} 
		public override void Update( float DeltaT ) 
		{ 
			float delta_x_velocity; 
			float delta_y_velocity; 
			float delta_z_velocity; 
			float delta_x_position; 
			float delta_y_position; 
			float delta_z_position; 
 
			if ( first_pass ) 
			{ 
				first_pass = false; 
 
				engine_sound.PlaySound(); 
			} 
 
			ears.Update(); 
 
//			System.Diagnostics.Debug.WriteLine("ownship update"); 
//			North = North + ownship_speed * (float)Math.Cos(Heading) * DeltaT; 
//			East  = East + ownship_speed * (float)Math.Sin(Heading) * DeltaT; 
 
			if ( m_bUsingJoystick ) 
			{ 
				Steering = (CGameEngine.Inputs.GetJoystickNormalX()-1.0f); 
				gas = (1.0f - (float)CGameEngine.Inputs.GetJoystickNormalY()); 
			} 
			else if ( m_bUsingMouse ) 
			{ 
				try 
				{ 
					gas += (float)CGameEngine.Inputs.GetMouseZ() * 0.1f; 
					if ( CGameEngine.Inputs.IsKeyPressed(Key.DownArrow) ) 
					{ 
						gas -= 0.1f; 
					} 
					else if ( CGameEngine.Inputs.IsKeyPressed(Key.UpArrow) ) 
					{ 
						gas += 0.1f; 
					} 
					if ( gas > 1.0 ) 
					{ 
						gas = 1.0f; 
					} 
					else if ( gas < -1.0f ) 
					{ 
						gas = -1.0f; 
					} 
					float x = (float)CGameEngine.Inputs.GetMouseX(); 
					wheel += (x * .10f)*DeltaT; 
					if ( wheel > 1.0 ) 
					{ 
						wheel = 1.0f; 
					} 
					else if ( wheel < -1.0f ) 
					{ 
						wheel = -1.0f; 
					} 
 
					Steering = wheel; 
				} 
				catch ( Exception e ) 
				{ 
					GameEngine.Console.AddLine("Exception"); 
					GameEngine.Console.AddLine(e.Message); 
				} 
			} 
			else if ( m_bUsingKeyboard ) 
			{ 
				if ( CGameEngine.Inputs.IsKeyPressed(Key.LeftArrow) ) 
				{ 
					Heading = Heading - .50f * DeltaT; 
				} 
				else if ( CGameEngine.Inputs.IsKeyPressed(Key.RightArrow) ) 
				{ 
					Heading = Heading + .50f * DeltaT; 
				} 
				if ( CGameEngine.Inputs.IsKeyPressed(Key.DownArrow) ) 
				{ 
					ownship_speed -= 0.1f; 
				} 
				else if ( CGameEngine.Inputs.IsKeyPressed(Key.UpArrow) ) 
				{ 
					ownship_speed += 0.1f; 
				} 
			} 
 
			if ( gas >= 0.0f )  
			{ 
				Gas = gas; 
				Brake = 0.0f; 
			} 
			if ( gas <= 0.0f ) 
			{ 
				Gas = 0.0f; 
				Brake = -gas; 
			} 
//			GameEngine.Console.AddLine("Steering " + wheel + " gas " + gas ); 
			engine_sound.Frequency = Gas; 
			engine_sound.Update(); 
 
			foreach ( Object3D test_obj in CGameApplication.Engine.Objects ) 
			{ 
				if ( test_obj !=  this ) 
				{ 
					if ( Collide(test_obj) ) 
					{ 
						delta_x_velocity = test_obj.VelocityX - VelocityX; 
						delta_y_velocity = test_obj.VelocityY - VelocityY; 
						delta_z_velocity = test_obj.VelocityZ - VelocityZ; 
						delta_x_position= test_obj.Position.X; 
						delta_y_position= test_obj.Position.X; 
						delta_z_position= test_obj.Position.X; 
						//						GameEngine.Console.AddLine( Name + " collided with " + test_obj.Name); 
						if ( test_obj.Name.Substring(0,3) == "red"  || 
							test_obj.Name.Substring(0,4) == "blue" || 
							test_obj.Name.Substring(0,6) == "cactus" ) 
						{ 
							thump.PlaySound(); 
							Dynamics.MinorCollision(); 
						} 
						else 
						{ 
							crash.PlaySound(); 
							Dynamics.MajorCollision(delta_x_velocity, delta_y_velocity, delta_z_velocity, delta_x_position, delta_y_position, delta_z_position); 
						} 
					} 
				} 
			} 
			foreach ( Object3D test_obj in GameEngine.BillBoard.Objects ) 
			{ 
				if ( test_obj !=  this ) 
				{ 
					if ( Collide(test_obj) ) 
					{ 
						delta_x_velocity = test_obj.VelocityX - VelocityX; 
						delta_y_velocity = test_obj.VelocityY - VelocityY; 
						delta_z_velocity = test_obj.VelocityZ - VelocityZ; 
						delta_x_position= test_obj.Position.X; 
						delta_y_position= test_obj.Position.X; 
						delta_z_position= test_obj.Position.X; 
						//						GameEngine.Console.AddLine( Name + " collided with " + test_obj.Name); 
						if ( test_obj.Name.Substring(0,3) == "red"  || 
							 test_obj.Name.Substring(0,4) == "blue" || 
							 test_obj.Name.Substring(0,6) == "cactus" ) 
						{ 
							thump.PlaySound(); 
							Dynamics.MinorCollision(); 
						} 
						else 
						{ 
							crash.PlaySound(); 
							Dynamics.MajorCollision(delta_x_velocity, delta_y_velocity, delta_z_velocity, delta_x_position, delta_y_position, delta_z_position); 
						} 
					} 
				} 
			} 
			base.Update( DeltaT ); 
//			Height = CGameEngine.Ground.HeightOfTerrain(Position) + Offset.Y; 
			Height = (float)Dynamics.Height; 
//			GameEngine.Console.AddLine( " height " + Height); 
//			Attitude = CGameEngine.Ground.GetSlope(Position, Heading ); 
		} 
 
		public override void Dispose() 
		{ 
			Debug.WriteLine(" disposing of " + Name + " in Ownship"); 
			base.Dispose(); 
		} 
 
	} 
}