public void TestIntersectionSingle()
{
var block = TestBlock.Create(
" ",
" X ",
" ");
var grid = new BlockGrid(3, 3);
grid.Freeze(block);
Assert.True(grid.Intersects(block.At(0, 0)));
for (var dy = -1; dy <= 1; dy++)
{
for (var dx = -1; dx <= 1; dx++)
{
if (dx == 0 && dy == 0)
{
continue;
}
Assert.False(grid.Intersects(block.At(dx, dy)));
}
}
}
public void TestIntersectionLineHorizontal()
{
var block = TestBlock.Create(
" ",
"XXX",
" "
);
var grid = new BlockGrid(3, 3);
grid.Freeze(block);
Assert.True(grid.Intersects(block.At(0, 0)));
Assert.False(grid.Intersects(block.At(0, -1)));
Assert.False(grid.Intersects(block.At(0, 1)));
}
public void TestIntersectionLineVertical()
{
var block = TestBlock.Create(
" X ",
" X ",
" X "
);
var grid = new BlockGrid(3, 3);
grid.Freeze(block);
Assert.True(grid.Intersects(block.At(0, 0)));
Assert.False(grid.Intersects(block.At(1, 0)));
Assert.False(grid.Intersects(block.At(-1, 0)));
}
public void TestOverlap()
{
var block = TestBlock.Create(
"XXX",
"XXX",
"XXX"
);
var grid = new BlockGrid(9, 9);
grid.Freeze(block.At(3, 3));
Assert.False(grid.Intersects(block.At(0, 0)));
Assert.False(grid.Intersects(block.At(4, 0)));
Assert.True(grid.Intersects(block.At(4, 1)));
Assert.False(grid.Intersects(block.At(0, 3)));
Assert.False(grid.Intersects(block.At(6, 6)));
Assert.False(grid.Intersects(block.At(4, 6)));
}