void CreateGridEntities()
{
var gridSize = _gridUtils.GetSize();
var gridInitializer = _entityFactory.BuildEntity <GridEntityDescriptor>(0, GridGroups.Grid);
var walkableGrid = NativeDynamicArray.Alloc <bool>(Allocator.Persistent, gridSize.x * gridSize.y);
for (uint x = 0; x < gridSize.x; x++)
{
for (uint y = 0; y < gridSize.y; y++)
{
var cellPosition = new uint2(x, y);
var cellIndex = _gridUtils.CellToEntityId(cellPosition);
var isLand = _gridLand.IsLand(cellPosition);
// note: it is probable that we don't need to create the land cells at all,
// unless there is some gameplay feature that needs them.
var initializer = _entityFactory.BuildEntity <GridCellEntityDescriptor>(
cellIndex, isLand ? GridGroups.GridLandGroup : GridGroups.GridWaterGroup
);
initializer.Init(new GridCellComponent {
Position = cellPosition, WorldCenter = _gridUtils.CellToCenterPosition(cellPosition)
});
walkableGrid.Set(cellIndex, !isLand);
}
}
gridInitializer.Init(new GridComponent {
WalkableGrid = walkableGrid
});
}