Checking that a Vector3 is a valid map position (within coords)

G'day all,

I've found a snippet in k1lly0u's Rad Pockets plugin which likely has most of the code I want:

Code:

private Vector3 getRandomPos()
{
    float mapSize = (TerrainMeta.Size.x / 2) - 600f;
    float randomX = UnityEngine.Random.Range(-mapSize, mapSize);
    float randomY = UnityEngine.Random.Range(-mapSize, mapSize);    Vector3 pos = new Vector3(randomX, 0, randomY);
    Vector3 targetPos = getGroundPosition(pos);
    return targetPos;
}     static Vector3 getGroundPosition(Vector3 sourcePos) // credit Wulf & Nogrod
{
    RaycastHit hitInfo;    if (Physics.Raycast(sourcePos, Vector3.down, out hitInfo, GROUND_MASKS))
    {
        sourcePos.y = hitInfo.point.y;
    }
    sourcePos.y = Mathf.Max(sourcePos.y, TerrainMeta.HeightMap.GetHeight(sourcePos));
    return sourcePos;
}

I'm just unsure as to what the -600f and such are useful for - can I check the mapsize as a decimal and compare it to passed decimal coordinate values?

I'm hoping to have a function which can accept both an x,y,z input (where those are all integers/decimals) and a player.transform.position. Obviously the position one should always be a valid map location, just need to ensure I check the manually entered coords for out-of-bounds values.

Thank you for any assistance
[DOUBLEPOST=1451125622][/DOUBLEPOST]Ah, may have my answer... Convert.ToInt16(TerrainMeta.Size.x) should return an int I can work with

 

He probably subtracted 600f from the true map size because the true map size takes the ocean around the map into account.

 

Thank you, yes, that makes sense. For my purposes I'd probably take off a lot less, but if that's all it was, then at least I know I'm not missing anything else important