Beta 3. Not a lot of really noticeable changes, just more polishing.

- Made Rifle scope shader toggleable, and tweaked its visuals a bit.
- Various adjustments to vector math (using portal-aware functions).
- Adjusted the penetration mechanics of the Quadshot, should be able to better go through multiple targets now.
- Fixed incorrect state jump after zoomed rifle altfire.
- Reduced the range of the Detector (2048 → 512), it was too massive.
- [flak_m] Fixed the issue where some looping weapon sounds would get stuck if the player died or dropped the weapon.
- Corrected Gun Lore description of Flamethrower altfire.

shaders/glsl/URifleScope.fp

@@ -1,12 +1,14 @@
 void main()
 {
 	vec2 uv = TexCoord.st;
-	vec2 p = vec2(0.5)-uv;
+	vec3 base = texture(InputTexture,uv).rgb;
+	vec2 p = vec2(.5)-uv;
 	vec2 sz = textureSize(InputTexture,0);
 	if ( sz.x > sz.y ) p.x *= sz.x/sz.y;
 	else p.y *= sz.y/sz.x;
 	vec3 col = texture(InputTexture,uv+p*pow(length(p),8.)*40.).rgb;
-	col = max(col.r,max(col.g,col.b))*vec3(1.,0.2,.1);
-	col *= 1.-clamp(pow(length(p)*2.,16.),0.,1.);
-	FragColor = vec4(col,1.0);
+	col = (max(col.r,max(col.g,col.b))+.02)*.98*vec3(1.,.2,.1);
+	float fade = 1.-clamp(pow(length(p)*2.,16.),0.,1.);
+	col *= fade;
+	FragColor = vec4(mix(base*.1,col,vec3(fade)),1.);
 }