Index: gl-shaders/explosion.vert
===================================================================
--- gl-shaders/explosion.vert	(revision 6d95adeaa57829ff5112ce0472d95db92d3bb29d)
+++ gl-shaders/explosion.vert	(revision c205c3a8a3acc0125b6b0cea26e2879f383b1889)
@@ -36,7 +36,9 @@
    }
 
-   vec3 p = vec3(0.0, 0.0, 0.0); //  this is the center of the explosion
-   vec3 a = vec3(0.0, 0.1, 0.0);
-   p += normalize(v_i) * mod(t, duration) / duration * 0.3; // allow time to loop around so particle emitter keeps going
+   //  this is the center of the explosion
+   vec3 p = vec3(0.0, 0.0, 0.0);
+
+   // allow time to loop around so particle emitter keeps going
+   p += normalize(v_i) * mod(t, duration) / duration * 0.3;
 
    gl_Position = proj * view * model_mats[ubo_index] * vec4(p, 1.0);