public static InvaderCategory GetRandomBombDropper(InvaderGrid pGrid)
{
InvaderGridManager pMan = InvaderGridManager.PrivGetInstance();
Debug.Assert(pMan != null);
InvaderCategory pTmpInvader = null;
// Find a random bottom row invader to drop the bomb
int numColumns = pGrid.GetNumChildren();
int randomColumnIndex = pMan.pRandom.Next(numColumns);
InvaderColumn pColumn = (InvaderColumn)pGrid.GetChild(randomColumnIndex);
pTmpInvader = (InvaderCategory)pColumn.GetChild(0);
// Check to see if the invader drop the bomb, if not go find another invader
InvaderCategory pInvader = null;
for (int i = 0; i < numColumns; i++)
{
randomColumnIndex = pMan.pRandom.Next(numColumns);
pColumn = (InvaderColumn)pGrid.GetChild(randomColumnIndex);
pTmpInvader = (InvaderCategory)pColumn.GetChild(0);
if (pTmpInvader.canLaunchBomb)
{
pInvader = pTmpInvader;
break;
}
}
return(pInvader);
}
public static GridState GetState(InvaderGridManager.State state)
{
InvaderGridManager pMan = InvaderGridManager.PrivGetInstance();
Debug.Assert(pMan != null);
GridState pGridState = null;
switch (state)
{
case InvaderGridManager.State.NotCollingWithWall:
pGridState = pMan.pNotCollingState;
break;
case InvaderGridManager.State.CollidingLeftWall:
pGridState = pMan.pCollidingLeft;
break;
case InvaderGridManager.State.CollidingRightWall:
pGridState = pMan.pCollidingRight;
break;
}
return(pGridState);
}