Directional Line of Site

Hi Guys

I'm working on a Rogue Like in my sparetime, and am implementing a
sight routine.

Rather than being able to move in all directions like most RLs, my
control system will be directional, that is the left and right arrows
are used to adjust the direction the player is facing and the fowards
key will move the player in that direction. (The only other game I have
seen this method is in The Unreal World, which is a fabulous game)

The player will only be able to see in front of him, and I envisage his
LOS will be a semicircle which moves with the player direction.
Therefore I will need to draw an arc - I understand the basics of
circle drawing using the Bresenham formula, am not able to adapt it to
draw arcs.

Can anyone help?

Cheers

Andy

It shouldn't be too hard:

//assumes createFOV is a function that creates a circle FOV in the
array mySight

createFOV();

if (facing == NORTH)
{
for (int i = sightDist; i <= 2 * sightDist; i++)
for (int j = 0; j <= 2 * sightDist; j++)
mySight[i][j] = false;
}
else if (facing == EAST)
/*
and so on and so on
*/

Obviously the arrays must start at zero, so the length of the array
would have to be 2 * sightDist. The center would be at sightDist.

-sightDist 0 sightDist //intial
0 sightDist 2 * sightDist //modified for array

Just create the circular field of view, store it to an array, and set
the part of the array you don't want to false.

Gamer_2k4
--
"Ha ha! I'll avoid the obvious pun about D-channel packet addressing!"