ship3d.java

空战游戏,来自java2 编程第五版源码

import java.applet.*;
import java.awt.*;

class Ship3D extends Object3D
{
	static final int SHIP_ROT_SPEED  = 3;
	static final int SHIP_ZROT_SPEED = 3;
	static final int SHIP_Z_SPEED	 = 6;
	static final int MAX_SHOTS		 = 4;
	
	double Object[] = {	0,		-20,	0,
						20,		20,		0,
						-20,	20,		0,
						0,		0,		-4,
						0,		0,		4};
	
	int Lines[] = {	0,1,	0,2,	1,3,	2,3,	1,4,	2,4};

	int Winkel = 0;
	int XRadius = 240;
	int YRadius = 200;
	
	static int LaserCount;
	static int Destroyed;

	static int CenterXPos;
	static int CenterZPos;

	static Object3D Player;

	public Ship3D()
	{
		Name = "Ship3D";

		LaserCount = 0;
		Destroyed  = 0;

		CenterXPos = 0;
		CenterZPos = 0;

		Player = this;
		
		VertNum = Object.length / 3;
		LineNum = Lines.length / 2;
	    
		Vertices = new Vector3D[VertNum];
		Points = new Point2D[VertNum];
		
		for (int i=0; i<VertNum; i++)
		{
			Points[i]   = new Point2D();
			Vertices[i] = new Vector3D();
			
			Vertices[i].x = Object[i*3+X];
			Vertices[i].y = Object[i*3+Y];
			Vertices[i].z = Object[i*3+Z];
		}

		Visible = true;

		XRot = 20;
	}
	
	public void Draw(Graphics g, Matrix3D CameraMatrix)
	{
		if (Visible)
		{
			Matrix3D MyMatrix = new Matrix3D();
			
			MyMatrix.RotateZ(ZRot);
			MyMatrix.RotateX(XRot);
			MyMatrix.RotateY(YRot);
			MyMatrix.Scale(XScale,YScale,ZScale);
			MyMatrix.Shear(XShear,YShear);
			MyMatrix.Translate(XPos,YPos,ZPos);
			
			MyMatrix.Merge(CameraMatrix.GetMatrix());

			for (int i=0; i<VertNum; i++)
			{
				MyMatrix.Transform(Vertices[i]);
				Points[i] = Point2D.Projection(Vertices[i]);			
			}
			
			for (int i=0; i<LineNum; i++)
			{
				g.setColor(Color.green);
				g.drawLine(Points[Lines[i*2]].x,Points[Lines[i*2]].y,Points[Lines[i*2+1]].x,Points[Lines[i*2+1]].y);
			}
		}
	}

	public boolean Handler()
	{
		if (Destroyed > 0)
		{
			if (Destroyed > 61)
			{
				Destroyed--;
				return true;
			}
			else
			{
				Destroyed--;
				Visible = !(Visible);
			}
		}

		XPos = (int)(XRadius * Matrix3D.Sin(Winkel));
		YPos = (int)(YRadius * Matrix3D.Cos(Winkel));
		
		if (WebWar.Key_U)
		{
			if (CenterZPos < 32)
			{
				CenterZPos++;
				ZPos += SHIP_Z_SPEED;

				Camera3D.YPos += 3;
			}
		}

		if (WebWar.Key_D)
		{
			if (CenterZPos > 0)
			{
				CenterZPos--;
				ZPos -= SHIP_Z_SPEED;

				Camera3D.YPos -= 3;
			}
		}

		if (WebWar.Key_L)
		{
			if (CenterXPos < 32)
			{
				CenterXPos++;
				ZRot += SHIP_ZROT_SPEED;
				if (ZRot >= 360) ZRot -= 360;
				Winkel -= SHIP_ROT_SPEED;
				if (Winkel < 0) Winkel += 360;

				if (CenterXPos >= 0)
				{
					XRot = 20 + (int)(CenterXPos * 0.4);
					if (XRot < 0) XRot += 360;
					YRot = (int)(CenterXPos * 2.5);
				}
				else
				{
					XRot = 20 + (int)(CenterXPos * -0.4);
					if (XRot < 0) XRot += 360;
					YRot = 360 + (int)(CenterXPos * 2.5);
				}

				Camera3D.XPos += 6;
				Camera3D.ZRot += 0.5;
				if (Camera3D.ZRot >= 360) Camera3D.ZRot -= 360;
			}
		}

		if (WebWar.Key_R)
		{
			if (CenterXPos > -32)
			{
				CenterXPos--;
				ZRot -= SHIP_ZROT_SPEED;
				if (ZRot < 0) ZRot += 360;
				Winkel += SHIP_ROT_SPEED;
				if (Winkel >= 360) Winkel -= 360;

				if (CenterXPos >= 0)
				{
					XRot = 20 + (int)(CenterXPos * 0.4);
					if (XRot < 0) XRot += 360;
					YRot = (int)(CenterXPos * 2.5);
				}
				else
				{
					XRot = 20 + (int)(CenterXPos * 0.4);
					if (XRot < 0) XRot += 360;
					YRot = 360 + (int)(CenterXPos * 2.5);
				}

				Camera3D.XPos -= 6;
				Camera3D.ZRot -= 0.5;
				if (Camera3D.ZRot < 0) Camera3D.ZRot += 360;
			}
		}

		if (WebWar.KeyDownCode == 32)
		{
			WebWar.KeyDownCode = 0;
			if (LaserCount < MAX_SHOTS)
			{
				WebWar.GetNewObject(new Shot3D(XPos,YPos,ZPos,XRot,YRot,ZRot));
				LaserCount++;
			}
		}
		
		return true;
	}
}