public static List <TileScript> GetRectangle(TilemapScript tilemap, Vector2Int topLeft, Vector2Int bottomRight)
{
if (tilemap == null)
{
return(null);
}
TilesInfoList tileInfo = tilemap.tilesInfo;
if (!_IsTileLocationWithinValidArea(tileInfo.tileAmts, topLeft) || !_IsTileLocationWithinValidArea(tileInfo.tileAmts, bottomRight))
{
return(null);
}
List <TileScript> finalArea = new List <TileScript>();
for (int y = topLeft.y; y <= bottomRight.y; ++y)
{
for (int x = topLeft.x; x <= bottomRight.x; ++x)
{
finalArea.Add(tilemap.GetTile(new Vector2Int(x, y)));
}
}
finalArea.RemoveAll(t => t == null);
return(finalArea);
}
public static List <TileScript> GetLine(TilemapScript tilemap, Vector2Int start, Vector2Int end)
{
if (tilemap == null)
{
return(null);
}
TilesInfoList tileInfo = tilemap.tilesInfo;
if (!_IsTileLocationWithinValidArea(tileInfo.tileAmts, start) || !_IsTileLocationWithinValidArea(tileInfo.tileAmts, end))
{
return(null);
}
List <TileScript> finalArea = new List <TileScript>();
// If both are the same, just return the base
if (start == end)
{
finalArea.Add(tilemap.GetTile(start));
return(finalArea);
}
// If not, then use DDA line algo
Vector2Int delta = end - start;
// Find out the number of steps
int steps = 0;
if (Mathf.Abs(delta.x) > Mathf.Abs(delta.y))
{
steps = Mathf.Abs(delta.x);
}
else
{
steps = Mathf.Abs(delta.y);
}
// Find out the increments for each
Vector2 increments = new Vector2(delta.x, delta.y) / (float)steps;
// And then just step through em
float currX = start.x;
float currY = start.y;
finalArea.Add(tilemap.GetTile(start));
for (int i = 0; i < steps; ++i)
{
currX += increments.x;
currY += increments.y;
finalArea.Add(tilemap.GetTile(Mathf.RoundToInt(currX), Mathf.RoundToInt(currY)));
}
/*
* int deltaX = end.x - start.x;
* int deltaY = end.y - start.y;
*
*
*
* // If vertical, don't use this, just go downwards
* if (deltaX == 0)
* {
* finalArea.Add(tilemap.GetTile(start));
* for (int y = start.y; y != end.y; y += (start.y > end.y) ? (-1) : (1))
* {
* finalArea.Add(tilemap.GetTile(start.x, y));
* }
* }
* else
* {
* // If not, then use the algo
* float deltaErr = Mathf.Abs((float)deltaY / (float)deltaX);
* float err = 0.0f;
* int currY = start.y;
*
* for (int x = start.x; x != end.x; x += (start.x > end.x) ? (-1) : (1))
* {
* finalArea.Add(tilemap.GetTile(x, currY));
* err += deltaErr;
* if (err >= 0.5f)
* {
* currY += (deltaY > 0) ? 1 : -1;
* deltaErr -= 1.0f;
* }
*
* }
* finalArea.Add(tilemap.GetTile(end));
* }
*/
finalArea.RemoveAll(t => t == null);
return(finalArea);
}