private static void ExpandVisible(Grid <Tile> buffer, Grid <Tile> visibility, int visibleIndex, Grid <Tile> terrainTiles, TileInfo[] tileData)
{
int width = visibility.Width;
int height = visibility.Height;
buffer.ResizeClear(width, height);
visibility.CopyTo(buffer);
Tile[] newVisibilityData = visibility.RawData;
Tile[] visibilityData = buffer.RawData;
Tile[] terrainData = terrainTiles.RawData;
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
int i = x + width * y;
// Don't expand visibility to non-blocking tiles
TileCollisionShapes collision = tileData[terrainData[i].BaseIndex].Collision;
bool blockingView = collision[TileCollisionLayer.Layer2] != TileCollisionShape.Free;
if (!blockingView)
{
continue;
}
bool visible = visibilityData[i].BaseIndex == visibleIndex;
visible |= x > 0 && y > 0 && visibilityData[i - 1 - width].BaseIndex == visibleIndex;
visible |= y > 0 && visibilityData[i - width].BaseIndex == visibleIndex;
visible |= x < width - 1 && y > 0 && visibilityData[i + 1 - width].BaseIndex == visibleIndex;
visible |= x > 0 && visibilityData[i - 1].BaseIndex == visibleIndex;
visible |= x < width - 1 && visibilityData[i + 1].BaseIndex == visibleIndex;
visible |= x > 0 && y < height - 1 && visibilityData[i - 1 + width].BaseIndex == visibleIndex;
visible |= y > 0 && visibilityData[i - width].BaseIndex == visibleIndex;
visible |= x < width - 1 && y < height - 1 && visibilityData[i + 1 + width].BaseIndex == visibleIndex;
if (visible)
{
newVisibilityData[i].BaseIndex = visibleIndex;
}
}
}
}
private void GrowFire()
{
Grid <Tile> collisionTiles = this.collisionMap.BeginUpdateTiles();
Tile[] collisionData = collisionTiles.RawData;
Tileset collisionTileset = this.collisionMap.Tileset.Res;
TileInfo[] collisionTileInfo = collisionTileset.TileData.Data;
Grid <Tile> tiles = this.fireMap.BeginUpdateTiles();
Tile[] tileData = tiles.RawData;
int width = tiles.Width;
int height = tiles.Height;
// Expand existing local fire
for (int y = 0; y < tiles.Height; y++)
{
for (int x = 0; x < tiles.Width; x++)
{
int i = y * width + x;
int fireIndex = this.GetFireIndex(tileData[i].BaseIndex);
if (fireIndex != -1 && fireIndex < this.firstFireTile + this.fireTileCount - 1)
{
fireIndex++;
tileData[i].BaseIndex = fireIndex;
}
}
}
// Spread fire from neighbours
for (int y = 0; y < tiles.Height; y++)
{
for (int x = 0; x < tiles.Width; x++)
{
int i = y * width + x;
int fireIndex = this.GetFireIndex(tileData[i].BaseIndex);
if (fireIndex != -1)
{
continue;
}
if ((x > 0 && this.GetFireIndex(tileData[i - 1].Index) != -1) ||
(x < width - 1 && this.GetFireIndex(tileData[i + 1].Index) != -1) ||
(y > 0 && this.GetFireIndex(tileData[i - width].Index) != -1) ||
(y < height - 1 && this.GetFireIndex(tileData[i + width].Index) != -1))
{
TileCollisionShapes collisionShapes = collisionTileInfo[collisionData[i].Index].Collision;
bool isFree = collisionShapes[TileCollisionLayer.Layer1] == TileCollisionShape.Free;
if (isFree)
{
fireIndex = this.firstFireTile;
tileData[i].BaseIndex = fireIndex;
}
}
}
}
// Update everything on the fire map
this.fireMap.EndUpdateTiles();
// Update nothing on the collision map (didn't change anything)
this.collisionMap.EndUpdateTiles(0, 0, 0, 0);
}