diff -up scorchwentbonkers-1.3/src/game/FragGame.cpp~ scorchwentbonkers-1.3/src/game/FragGame.cpp

--- scorchwentbonkers-1.3/src/game/FragGame.cpp~	2013-06-06 18:31:11.000000000 +0200

+++ scorchwentbonkers-1.3/src/game/FragGame.cpp	2016-02-21 11:10:53.824739449 +0100

@@ -1,4 +1,5 @@

 #include <cstdio>

+#include <cmath>

 #include <GL/gl.h>

 #include <alleggl.h>

 #include <allegro.h>

@@ -121,7 +122,7 @@ void FragGame::respawnPlayers()

 				xCoord = randomFloat(40.0, 760.0);

 				positionOK = true;

 				for (int j = 0; j < playerCount; j++)

-					if (abs(tanks[j]->getX() - xCoord) < 68.0)

+					if (fabs(tanks[j]->getX() - xCoord) < 68.0)

 						positionOK = false;	

 			} while (!positionOK);