From de820e36f8032ed699065a0bc0fc425d66ef42f9 Mon Sep 17 00:00:00 2001
From: jacksonmj <mj-pt@jacksonmj.co.uk>
Date: Wed, 17 Aug 2011 23:40:42 +0100
Subject: Only do grav lensing when N-grav is on, and round coordinates
 correctly


diff --git a/src/graphics.c b/src/graphics.c
index 0b6dfd7..6225c6f 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -4009,12 +4009,12 @@ void render_gravlensing(pixel *src, pixel * dst)
 	{
 		for(ny = 0; ny < YRES; ny++)
 		{
-			rx = nx-(gravxf[(ny*XRES)+nx]*0.75f);
-			ry = ny-(gravyf[(ny*XRES)+nx]*0.75f);
-			gx = nx-(gravxf[(ny*XRES)+nx]*0.875f);
-			gy = ny-(gravyf[(ny*XRES)+nx]*0.875f);
-			bx = nx-(gravxf[(ny*XRES)+nx]);
-			by = ny-(gravyf[(ny*XRES)+nx]);
+			rx = (int)(nx-gravxf[(ny*XRES)+nx]*0.75f+0.5f);
+			ry = (int)(ny-gravyf[(ny*XRES)+nx]*0.75f+0.5f);
+			gx = (int)(nx-gravxf[(ny*XRES)+nx]*0.875f+0.5f);
+			gy = (int)(ny-gravyf[(ny*XRES)+nx]*0.875f+0.5f);
+			bx = (int)(nx-gravxf[(ny*XRES)+nx]+0.5f);
+			by = (int)(ny-gravyf[(ny*XRES)+nx]+0.5f);
 			if(rx > 0 && rx < XRES && ry > 0 && ry < YRES && gx > 0 && gx < XRES && gy > 0 && gy < YRES && bx > 0 && bx < XRES && by > 0 && by < YRES)
 			{
 				t = dst[ny*(XRES+BARSIZE)+nx];
diff --git a/src/main.c b/src/main.c
index 19aa160..c865cde 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1848,7 +1848,7 @@ int main(int argc, char *argv[])
 		ClearScreen();
 #else
 
-		if(cmode==CM_FANCY)
+		if(ngrav_enable && cmode==CM_FANCY)
 		{
 			part_vbuf = part_vbuf_store;
 			memset(vid_buf, 0, (XRES+BARSIZE)*YRES*PIXELSIZE);
@@ -1955,7 +1955,7 @@ int main(int argc, char *argv[])
 
 		render_signs(part_vbuf);
 
-		if(cmode==CM_FANCY)
+		if(ngrav_enable && cmode==CM_FANCY)
 			render_gravlensing(part_vbuf, vid_buf);
 
 		memset(vid_buf+((XRES+BARSIZE)*YRES), 0, (PIXELSIZE*(XRES+BARSIZE))*MENUSIZE);//clear menu areas
--
cgit v0.9.2-21-gd62e