// Author: Samuel Stahl
//Checks first for illegal move and returns true if found
// else returns false if move is legal
//After illegal move check, checks for imenent collision with bottom or block in grid and sets AboutToPlace if true
public static bool CheckForCollisions(BlockGrid grid, List <Block> blocks, GameShape shape)
{
List <Vector2> occupiedCoordinates = grid.GetOccupiedCoordinates();
//Checks for illegal collisions with boundary or occupied areas and returns true if collision found
foreach (Block b in blocks)
{
Vector2 blockCoord = b.GetPosition();
//left boundary check
if (blockCoord.X < 0)
{
return(true);
}
//right boundary check
else if (blockCoord.X >= grid.GetGridColumnCount())
{
return(true);
}
//bottom boundary check
else if (blockCoord.Y < 0)
{
return(true);
}
//check for illegal overlap
else if (occupiedCoordinates.Contains(blockCoord))
{
return(true);
}
}
return(false);
}
private static void checkAndApply(InputAction action, BlockGrid grid, GameShape shape)
{
List <Block> shapeBlocks = shape.CalcBlocksPostAction(action);
List <Vector2> occupiedCoordinates = grid.GetOccupiedCoordinates();
bool collision = CheckForCollisions(grid, shapeBlocks, shape);
CheckForCollisions(grid, shape.blocks, shape);
if (!collision)
{
shape.ApplyAction(action);
}
checkAboutToPlace(shape.blocks, shape, occupiedCoordinates);
}
public void PlaceShapeTest()
{
List <Vector2> expectedPoints;
BlockGrid grid = BasicBlockGridInitialize(out expectedPoints);
//test that the all points from shapes exist on grid
List <Vector2> points = grid.GetOccupiedCoordinates();
foreach (Vector2 p in expectedPoints)
{
//check if p in expected points
if (!points.Contains(p))
{
Assert.Fail("Block at point: {0}, {1} not found on grid", p.X, p.Y);
}
}
}
public void RemoveMultipleLinesTest()
{
List <Vector2> expectedPoints;
BlockGrid grid = RemoveLinesInitialize(out expectedPoints);
//Get indexes of lines to remove
List <int> lineIndexes = grid.GetCompletedLines();
//Remove lines and shift above blocks down
grid.RemoveLines(lineIndexes);
//check that blocks removed and remaining above blocks shifted down
List <Vector2> points = grid.GetOccupiedCoordinates();
foreach (Vector2 p in expectedPoints)
{
//check if p in expected points
if (!points.Contains(p))
{
Assert.Fail("Block at point: {0}, {1} not found on grid", p.X, p.Y);
}
}
}