From df40de3b564062c1bba93332d08e86f3691e6b00 Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Mon, 23 Aug 2010 17:56:37 +0000
Subject: Added output of XML file with universe states per tick.

---
 glgrav.cpp | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

(limited to 'glgrav.cpp')

diff --git a/glgrav.cpp b/glgrav.cpp
index 95b00b4..5c08b90 100644
--- a/glgrav.cpp
+++ b/glgrav.cpp
@@ -83,6 +83,9 @@ static bool		fog=false;
 static bool		fog_light=false;
 static GLfloat		fog_col[4]={0.0f,0.0f,0.0f,1.0f};
 
+static ofstream		output;
+unsigned long		tick;
+
 static struct
 {
     GLfloat	x,y,z;
@@ -180,6 +183,17 @@ int main(int argc, char *argv[])
 	render_sparks=false;
     }
 
+    if (!config.output().empty())
+    {
+    	output.open(config.output().c_str());
+
+	if (output)
+	{
+	    output << "<?xml version=\"1.0\" encoding=\"utf-8\"?>" << endl;
+	    output << "<simulation>" << endl;
+	}
+    }
+
     config.windowSize(width,height);
 
     width=max(width,100);
@@ -414,6 +428,12 @@ static void Menu(int item)
 	    break;
 
 	case MENU_QUIT:
+	    if (output)
+	    {
+	    	output << "</simulation>" << endl;
+		output.close();
+	    }
+
 	    exit(EXIT_SUCCESS);
 	    break;
     }
@@ -875,11 +895,44 @@ static void Update(void)
 
     new_mass=mass;
 
+    if (output)
+    {
+    	output << "<step tick=\"" << tick++ << "\">" << endl;
+    }
+
     for(f=0;f<mass.size();f++)
     {
+	if (output)
+	{
+	    GLfloat r,g,b;
+	    double x,y,z;
+	    double dx,dy,dz;
+
+	    mass[f].getPosition(x, y, z);
+	    mass[f].getColour(r, g, b);
+	    mass[f].getDelta(dx, dy, dz);
+
+	    output << "<mass name=\"" << mass[f].getName() << "\" "
+	           << "r=\"" << r << "\" "
+		   << "g=\"" << g << "\" "
+	           << "b=\"" << b << "\" "
+	           << "x=\"" << x << "\" "
+		   << "y=\"" << y << "\" "
+	           << "z=\"" << z << "\" "
+	           << "dx=\"" << dx << "\" "
+		   << "dy=\"" << dy << "\" "
+	           << "dz=\"" << dz << "\" "
+	           << "/>" << endl;
+	}
+
     	del_mass.push_back(false);
     }
 
+    if (output)
+    {
+    	output << "</step>" << endl;
+    }
+
     for(f=0;f<mass.size();f++)
     {
     	for(r=0;r<mass.size();r++)
-- 
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