A round function that does it's job.

Looks good but codewise but probably has terrible performance, we'll
see how this goes.

src/player.c

@@ -177,5 +177,12 @@ f32 signf(f32 value) {
 }
 
 i8 round(f32 value) {
-	return (i8)value;
+	const i8 value_as_int = (i8)value;
+	const f32 rest = value - (f32)(value_as_int * sign(value_as_int));
+	if (rest >= 0.5)
+		return value_as_int + 1;
+	else if (rest <= -0.5)
+		return value_as_int - 1;
+	else
+		return value_as_int;
 }