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/*
 * TestRenderer.java
 * Copyright (C) 2003
 *
 * $Id: TestRenderer.java,v 1.2 2004-07-08 20:24:31 hzi Exp $
 */
/*
Copyright (C) 1997-2001 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
package jake2.render;

import java.awt.Dimension;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Vector;

import jake2.Defines;
import jake2.Globals;
import jake2.client.*;
import jake2.game.Cmd;
import jake2.game.cvar_t;
import jake2.qcommon.*;
import jake2.sys.KBD;
import jake2.sys.Sys;
import jake2.util.Lib;
import jake2.util.Math3D;
import jake2.util.Vargs;

/**
 * TestRenderer
 * 
 * @author cwei
 */
public class TestRenderer {

	String[] args;

	refexport_t re;
	refimport_t ri;
	viddef_t viddef;
	int framecount = 0;
	static int testnr = 0;

	public TestRenderer(String[] args) {
		this.args = args;
	}

	public static void main(String[] args) {

		TestRenderer test = new TestRenderer(args);
		test.init();
		test.run();
	}

	void init() {

		// only for testing
		// a simple refimport_t implementation
		ri = new refimport_t() {
			public void Sys_Error(int err_level, String str) {
				VID.Error(err_level, str, null);
			}

			public void Sys_Error(int err_level, String str, Vargs vargs) {
				VID.Error(err_level, str, vargs);
			}

			public void Cmd_AddCommand(String name, xcommand_t cmd) {
				Cmd.AddCommand(name, cmd);
			}

			public void Cmd_RemoveCommand(String name) {
				Cmd.RemoveCommand(name);
			}

			public int Cmd_Argc() {
				return Cmd.Argc();
			}

			public String Cmd_Argv(int i) {
				return Cmd.Argv(i);
			}

			public void Cmd_ExecuteText(int exec_when, String text) {
				Cbuf.ExecuteText(exec_when, text);
			}

			public void Con_Printf(int print_level, String str) {
				VID.Printf(print_level, str, null);
			}

			public void Con_Printf(int print_level, String str, Vargs vargs) {
				VID.Printf(print_level, str, vargs);
			}

			public byte[] FS_LoadFile(String name) {
				return FS.LoadFile(name);
			}

			public int FS_FileLength(String name) {
				return FS.FileLength(name);
			}
			
			public void FS_FreeFile(byte[] buf) {
				FS.FreeFile(buf);
			}

			public String FS_Gamedir() {
				return FS.Gamedir();
			}

			public cvar_t Cvar_Get(String name, String value, int flags) {
				return Cvar.Get(name, value, flags);
			}

			public cvar_t Cvar_Set(String name, String value) {
				return Cvar.Set(name, value);
			}

			public void Cvar_SetValue(String name, float value) {
				Cvar.SetValue(name, value);
			}

			public boolean Vid_GetModeInfo(Dimension dim, int mode) {
				return VID.GetModeInfo(dim, mode);
			}

			public void Vid_MenuInit() {
				VID.MenuInit();
			}

			public void Vid_NewWindow(int width, int height) {
				VID.NewWindow(width, height);
			}

			public void updateScreenCallback() {
				TestRenderer.this.updateScreen();
			}
		};


		Qcommon.Init(new String[] {"TestRenderer"});
		// sehr wichtig !!!
		VID.Shutdown();

		String[] names = Renderer.getDriverNames();
		System.out.println("Registered Drivers: " + Arrays.asList(names));

		this.re = Renderer.getDriver("jogl", ri);

		System.out.println("Use driver: " + re);
		System.out.println();
		
		re.Init(0, 0);
		
//		for (int i = 0; i < raw.length; i++) {
//			raw[i] = (byte)((i % 3) + 1); //((i % 4) + 20);
//		} 
		Cmd.AddCommand("nexttest", nexttest);
		Cbuf.AddText("bind n nexttest");
		Cbuf.Execute();
		Globals.cls.key_dest = Defines.key_game;
		Globals.cls.state = Defines.ca_active;		
	}

	float fps = 0.0f;
	long start = 0;
	
	void updateScreen() {
		re.BeginFrame(0.0f);
		viddef = Globals.viddef;
		re.DrawStretchPic(0,0,viddef.width, viddef.height, "conback");
		
		if (framecount % 500 == 0) {
			long time = System.currentTimeMillis();
			fps = 500000.0f / (time - start);
			start = time;		
		}
		String text = fps + " fps";
		
		for (int i = 0; i < text.length(); i++) {
			re.DrawChar(10 + 8 * i, viddef.height/2, (int)text.charAt(i));
		}
		
		Dimension wal = new Dimension();
		re.DrawGetPicSize(wal, "/textures/e1u1/basemap.wal");

		re.DrawPic(0, viddef.height - wal.height, "/textures/e1u1/basemap.wal");

		switch (testnr) {
			case 0 :
				testParticles();
				break;
			case 1 :
				testModel();
				break;
			case 2 :
				testSprites();
				break;
			case 3:
				testBeam();
		}
		re.EndFrame();
		framecount++;
	}


	long startTime;

	void run() {
		startTime = System.currentTimeMillis();
		xcommand_t callback = new xcommand_t() {
			public void execute() {
				updateScreen();
			}
		};
		while (true) {
			re.updateScreen(callback);
			KBD.Update();
			Cbuf.Execute();
			try {
				Thread.sleep(5);
			} catch (InterruptedException e) {
			}
		}
	}
	
//	===================================================================

	private int yaw = 0;

	private void testModel() {

		refdef_t refdef = new refdef_t();

		refdef.x = viddef.width/ 2;
		refdef.y = viddef.height / 2 - 72;
		refdef.width = 144 * 2;
		refdef.height = 168 * 2;
		refdef.fov_x = 40;
		refdef.fov_y = Math3D.CalcFov(refdef.fov_x, refdef.width, refdef.height);
		refdef.time = 1.0f * 0.001f;

		int maxframe = 29;
		entity_t entity = new entity_t();
		String modelName = "players/female/tris.md2";

		String modelSkin = "players/female/athena.pcx";

		String modelImage = "/players/female/athena_i.pcx";
		String modelImage1 = "/players/female/brianna_i.pcx";
		String modelImage2 = "/players/female/cobalt_i.pcx";
		String modelImage3 = "/players/female/lotus_i.pcx";

		entity.model = re.RegisterModel(modelName);

		drawString(refdef.x, refdef.y - 20, (entity.model != null) ? modelName : "DEBUG: NullModel");

		entity.skin = re.RegisterSkin(modelSkin);
		entity.flags = Defines.RF_FULLBRIGHT;
		entity.origin[0] = 80;
		entity.origin[1] = 0;
		entity.origin[2] = 0;
		Math3D.VectorCopy(entity.origin, entity.oldorigin);
		entity.frame = (framecount / 3) % ((qfiles.dmdl_t)entity.model.extradata).num_frames;
		entity.oldframe = 0;
		entity.backlerp = 0.0f;
		yaw+=KBD.mx;
		KBD.mx = 0;
		if (yaw > 360)
			yaw -= 360;
		if (yaw < 0)
			yaw += 360;
		entity.angles[1] = yaw;


		refdef.areabits = null;
		refdef.num_entities = 1;
		refdef.entities = new entity_t[] { entity };
		refdef.lightstyles = null;
		refdef.rdflags = Defines.RDF_NOWORLDMODEL;

		//			 Menu_Draw(& s_player_config_menu);

		M_DrawTextBox(
			(int) ((refdef.x) * (320.0F / viddef.width) - 8),
			(int) ((viddef.height / 2) * (240.0F / viddef.height) - 77),
			refdef.width / 8,
			refdef.height / 8);
		refdef.height += 4;

		re.RenderFrame(refdef);

		re.DrawPic(refdef.x - 80, refdef.y, modelImage);
		re.DrawPic(refdef.x - 80, refdef.y + 47, modelImage1);
		re.DrawPic(refdef.x - 80, refdef.y + 94, modelImage2);
		re.DrawPic(refdef.x - 80, refdef.y + 141, modelImage3);
	}
	
	
	private String[] sprites = {
		"sprites/s_bfg1.sp2",
		"sprites/s_bfg2.sp2",
		"sprites/s_bfg3.sp2",
		"sprites/s_explod.sp2",
		"sprites/s_explo2.sp2",
		"sprites/s_explo3.sp2",
		"sprites/s_flash.sp2",
		"sprites/s_bubble.sp2",
	};
	
	private int spriteCount = 0;
	private boolean loading = true;

	private void testSprites() {
		
		if (loading) {
			
			re.DrawPic(viddef.width / 2 - 50, viddef.height / 2, "loading");
			String name = sprites[spriteCount];
			
			drawString(viddef.width / 2 - 50, viddef.height / 2 + 50, name);
			
			re.RegisterModel(name);
			loading = ++spriteCount < sprites.length;
			return;
		}
		

		refdef_t refdef = new refdef_t();

		refdef.x = viddef.width/ 2;
		refdef.y = viddef.height / 2 - 72;
		refdef.width = 144 * 2;
		refdef.height = 168 * 2;
		refdef.fov_x = 40;
		refdef.fov_y = Math3D.CalcFov(refdef.fov_x, refdef.width, refdef.height);
		refdef.time = 1.0f * 0.001f;

		int maxframe = 29;
		entity_t entity = new entity_t();

		String modelName = sprites[(framecount / 30) % sprites.length];
		drawString(refdef.x, refdef.y - 20, modelName);

		entity.model = re.RegisterModel(modelName);

		entity.flags = Defines.RF_FULLBRIGHT;
		entity.origin[0] = 80 - (framecount % 200) + 200;
		entity.origin[1] = 0 + (float)(40 * Math.sin(Math.toRadians(framecount)));
		entity.origin[2] = 0 + 20;
		Math3D.VectorCopy(entity.origin, entity.oldorigin);
		entity.frame = framecount / 2;
		entity.oldframe = 0;
		entity.backlerp = 0.0f;

		refdef.areabits = null;
		refdef.num_entities = 1;
		refdef.entities = new entity_t[] { entity };
		refdef.lightstyles = null;
		refdef.rdflags = Defines.RDF_NOWORLDMODEL;

		M_DrawTextBox(
			(int) ((refdef.x) * (320.0F / viddef.width) - 8),
			(int) ((viddef.height / 2) * (240.0F / viddef.height) - 77),
			refdef.width / 8,
			refdef.height / 8);
		refdef.height += 4;

		re.RenderFrame(refdef);
		
	}
	
	private void testBeam() {

		refdef_t refdef = new refdef_t();

		refdef.x = viddef.width/ 2;
		refdef.y = viddef.height / 2 - 72;
		refdef.width = 144 * 2;
		refdef.height = 168 * 2;
		refdef.fov_x = 40;
		refdef.fov_y = Math3D.CalcFov(refdef.fov_x, refdef.width, refdef.height);
		refdef.time = 1.0f * 0.001f;

		int maxframe = 29;
		entity_t entity = new entity_t();

		drawString(refdef.x, refdef.y - 20, "Beam Test");

		entity.flags = Defines.RF_BEAM;
		entity.origin[0] = 200;
		entity.origin[1] = 0 + (float)(80 * Math.sin(4 * Math.toRadians(framecount)));
		entity.origin[2] = 20 + (float)(40 * Math.cos(4 * Math.toRadians(framecount)));
		
		entity.oldorigin[0] = 20;
		entity.oldorigin[1] = 0; // + (float)(40 * Math.sin(Math.toRadians(framecount)));
		entity.oldorigin[2] = -20; // + 20;
		
		entity.frame = 3;
		entity.oldframe = 0;
		entity.backlerp = 0.0f;
		// the four beam colors are encoded in 32 bits of skinnum (hack)
		entity.alpha = 0.6f;
		
		int[] color = { 0xd0, 0xd1, 0xe0, 0xb0 };
		
		entity.skinnum = color[framecount / 2 % 4];
		entity.model = null;

		refdef.areabits = null;
		refdef.num_entities = 1;
		refdef.entities = new entity_t[] { entity };
		refdef.lightstyles = null;
		refdef.rdflags = Defines.RDF_NOWORLDMODEL;

		M_DrawTextBox(
			(int) ((refdef.x) * (320.0F / viddef.width) - 8),
			(int) ((viddef.height / 2) * (240.0F / viddef.height) - 77),
			refdef.width / 8,
			refdef.height / 8);
		refdef.height += 4;

		re.RenderFrame(refdef);
	}
	
	private Vector particles = new Vector(1024); // = new particle_t[20];
	private LinkedList active_particles = new LinkedList();
	private boolean explode = false; 
	private float[] target; 
	
	private boolean initParticles = true;
	
	private void testParticles() {
		
		particles.clear();
		
		if (active_particles.size() == 0) {
			if (explode)
				Explosion(target);
			else {
				target = new float[] {150 + Lib.crand() * 80, Lib.crand() * 40, Lib.crand() * 40};
				RailTrail(new float[]{30, -20, -20}, target);
				//Heatbeam(new float[]{30, 20, -20}, target);
			}
			explode = !explode;
		}
		refdef_t refdef = new refdef_t();

		refdef.x = viddef.width/ 2;
		refdef.y = viddef.height / 2 - 72;
		refdef.width = 400;
		refdef.height = 400;
		refdef.fov_x = 50;
		refdef.fov_y = Math3D.CalcFov(refdef.fov_x, refdef.width, refdef.height);
		refdef.time = 1.0f * 0.001f;
		
		animateParticles();
		
		drawString(refdef.x, refdef.y - 20, "active particles: " + particles.size());
		
		particle_t[] tmp = new particle_t[particles.size()];
		
		particles.toArray(tmp);
		
		refdef.particles = tmp;
		refdef.num_particles = tmp.length;
		
		refdef.areabits = null;
		refdef.num_entities = 0;
		refdef.entities = null;
		refdef.lightstyles = null;
		refdef.rdflags = Defines.RDF_NOWORLDMODEL;

		M_DrawTextBox(
			(int) ((refdef.x) * (320.0F / viddef.width) - 8),
			(int) ((viddef.height / 2) * (240.0F / viddef.height) - 77),
			refdef.width / 8,
			refdef.height / 8);
		refdef.height += 4;

		re.RenderFrame(refdef);
	}
	
	private void drawString(int x, int y, String text) {
		for (int i = 0; i < text.length(); i++) {
			re.DrawChar(x + 8 * i, y, (int)text.charAt(i));
		}
	}


	private void M_DrawTextBox(int x, int y, int width, int lines) {
		int cx, cy;
		int n;

		// draw left side
		cx = x;
		cy = y;
		M_DrawCharacter(cx, cy, 1);
		for (n = 0; n < lines; n++) {
			cy += 8;
			M_DrawCharacter(cx, cy, 4);
		}
		M_DrawCharacter(cx, cy + 8, 7);

		// draw middle
		cx += 8;
		while (width > 0) {
			cy = y;
			M_DrawCharacter(cx, cy, 2);
			for (n = 0; n < lines; n++) {
				cy += 8;
				M_DrawCharacter(cx, cy, 5);
			}
			M_DrawCharacter(cx, cy + 8, 8);
			width -= 1;
			cx += 8;
		}

		// draw right side
		cy = y;
		M_DrawCharacter(cx, cy, 3);
		for (n = 0; n < lines; n++) {
			cy += 8;
			M_DrawCharacter(cx, cy, 6);
		}
		M_DrawCharacter(cx, cy + 8, 9);
	}

	/*
	================
	M_DrawCharacter
	
	Draws one solid graphics character
	cx and cy are in 320*240 coordinates, and will be centered on
	higher res screens.
	================
	*/
	private void M_DrawCharacter(int cx, int cy, int num) {
		re.DrawChar(
			cx + ((viddef.width - 320) >> 1),
			cy + ((viddef.height - 240) >> 1),
			num);
	}

	long endtime;

	private void Explosion(float[] org) {
		float[] dir = {0, 0, 0};
		int i;
		cparticle_t p;

		for(i=0; i<256; i++)
		{
			p = new cparticle_t();

			p.time = time() * 1.0f;
			p.color = /*0xe0*/ 223 -  (Lib.rand() & 7);
			for (int j=0 ; j<3 ; j++)
			{
				p.org[j] = org[j] + (float)(Lib.rand() % 32) - 16;
				p.vel[j] = (float)(Lib.rand() % 384) - 192;
			}
			
			p.accel[0] = p.accel[1] = 0;
			p.accel[2] = -PARTICLE_GRAVITY;
			p.alpha = 1.0f;
			p.alphavel = -0.8f / (0.5f + Lib.frand() * 0.3f);

			active_particles.add(p);
		}
	}
	
	static final float INSTANT_PARTICLE = -10000.0f;
	static final float PARTICLE_GRAVITY = 40.0f;
	
	
	/*
	===============
	CL_AddParticles
	===============
	*/
	private void animateParticles()
	{
		cparticle_t p;
		float alpha;
		float	time, time2;
		float[] org = {0, 0, 0};
		int color;
		particle_t particle;
		
		time = 0.0f;

		for (Iterator it = active_particles.iterator(); it.hasNext();)
		{
			p = (cparticle_t) it.next();

			// PMM - added INSTANT_PARTICLE handling for heat beam
			if (p.alphavel != INSTANT_PARTICLE)
			{
				time = (time() - p.time) * 0.001f;
				alpha = p.alpha + time*p.alphavel;
				if (alpha <= 0)
				{	// faded out
					it.remove();
					continue;
				}
			}
			else
			{
				alpha = p.alpha;
			}

			if (alpha > 1.0)
				alpha = 1;
			color = (int)p.color;

			time2 = time*time;

			org[0] = p.org[0] + p.vel[0]*time + p.accel[0]*time2;
			org[1] = p.org[1] + p.vel[1]*time + p.accel[1]*time2;
			org[2] = p.org[2] + p.vel[2]*time + p.accel[2]*time2;

			particle = new particle_t();
			particle.alpha = alpha;
			Math3D.VectorCopy(org, particle.origin);
			particle.color = color;
			
			particles.add(particle);
			 
			// PMM
			if (p.alphavel == INSTANT_PARTICLE)
			{
				p.alphavel = 0.0f;
				p.alpha = 0.0f;
			}
		}
	}
	
	private void Heatbeam (float[] start, float[] forward)
	{
		
		float[] v_up = {0, 0, 10};
		float[] v_right = {0, 10, 0};
		
		
		float[] move = {0, 0, 0};
		float[] vec = {0, 0, 0};
		float	len;
		int j;
		cparticle_t	p;
		float[] right = {0, 0, 0};
		float[] up = {0, 0, 0};
		int i;
		float		c, s;
		float[] dir = {0, 0, 0};
		float	ltime;
		float	step = 32.0f, rstep;
		float	start_pt;
		float	rot;
		float	variance;
		float[] end = {0, 0, 0};

		Math3D.VectorMA (start, 4096, forward, end);

		Math3D.VectorCopy (start, move);
		Math3D.VectorSubtract (end, start, vec);
		len = Math3D.VectorNormalize (vec);

		Math3D.VectorCopy (v_right, right);
		Math3D.VectorCopy (v_up, up);
//		if (vidref_val == VIDREF_GL)
//		{ // GL mode
			Math3D.VectorMA (move, -0.5f, right, move);
			Math3D.VectorMA (move, -0.5f, up, move);
//		}
//		// otherwise assume SOFT

		ltime = (float)time()/1000.0f;
		start_pt = (ltime*96.0f) % step;
		Math3D.VectorMA (move, start_pt, vec, move);

		Math3D.VectorScale (vec, step, vec);

		rstep = (float)Math.PI / 10.0f;
		for (i=(int)start_pt ; i<len ; i+=step)
		{
			if (i>step*5) // don't bother after the 5th ring
				break;

			for (rot = 0; rot < Math.PI * 2; rot += rstep)
			{

				p = new cparticle_t();
							
				p.time = time();
				Math3D.VectorClear (p.accel);
				variance = 0.5f;
				c = (float)Math.cos(rot)*variance;
				s = (float)Math.sin(rot)*variance;
			
				// trim it so it looks like it's starting at the origin
				if (i < 10)
				{
					Math3D.VectorScale (right, c*(i/10.0f), dir);
					Math3D.VectorMA (dir, s*(i/10.0f), up, dir);
				}
				else
				{
					Math3D.VectorScale (right, c, dir);
					Math3D.VectorMA (dir, s, up, dir);
				}
		
				p.alpha = 0.8f;
				p.alphavel = -1000.0f;
				p.color = /* 223 */0x74 - (Lib.rand()&7);
				for (j=0 ; j<3 ; j++)
				{
					p.org[j] = move[j] + dir[j]*3;
					p.vel[j] = 0;
				}
				
				active_particles.add(p);
			}
			Math3D.VectorAdd (move, vec, move);
		}
	}
	
	private void RailTrail(float[] start, float[] end)
	{
		float[] move = {0, 0, 0};
		float[] vec = {0, 0, 0};
		float	len;
		int j;
		cparticle_t	p;
		float	dec;
		float[] right = {0, 0, 0};
		float[] up = {0, 0, 0};
		int i;
		float	d, c, s;
		float[] dir = {0, 0, 0};

		Math3D.VectorCopy (start, move);
		Math3D.VectorSubtract (end, start, vec);
		len = Math3D.VectorNormalize(vec);

		Math3D.MakeNormalVectors(vec, right, up);

		for (i=0 ; i<len ; i++)
		{

			p = new cparticle_t();		
			p.time = time();
			Math3D.VectorClear (p.accel);

			d = i * 0.1f;
			c = (float)Math.cos(d);
			s = (float)Math.sin(d);

			Math3D.VectorScale (right, c, dir);
			Math3D.VectorMA (dir, s, up, dir);

			p.alpha = 1.0f;
			p.alphavel = -1.0f / (1 + Lib.frand() * 0.2f);
			p.color = 0x74 + (Lib.rand() & 7);
			for (j=0 ; j<3 ; j++)
			{
				p.org[j] = move[j] + dir[j]*3;
				p.vel[j] = dir[j]*6;
			}

			Math3D.VectorAdd (move, vec, move);

			active_particles.add(p);	
		}

		dec = 0.75f;
		Math3D.VectorScale (vec, dec, vec);
		Math3D.VectorCopy (start, move);

		while (len > 0)
		{
			len -= dec;

			p = new cparticle_t();

			p.time = time();
			Math3D.VectorClear (p.accel);

			p.alpha = 1.0f;
			p.alphavel = -1.0f / (0.6f + Lib.frand() * 0.2f);
			p.color = 0x0 + Lib.rand()&15;

			for (j=0 ; j<3 ; j++)
			{
				p.org[j] = move[j] + Lib.crand()*3;
				p.vel[j] = Lib.crand()*3;
				p.accel[j] = 0;
			}

			Math3D.VectorAdd (move, vec, move);
			active_particles.add(p);	
		}
	}
	
	private int time() {
		return (int)(System.currentTimeMillis() - startTime);
	}
	
	static xcommand_t nexttest = new xcommand_t() {
		public void execute() {
			testnr++;
			testnr = testnr % 3;
		}
	};

}