private SubUnit[] subunits; //the subunits
#endregion Fields
#region Constructors
public Unit( GameGrid g )
{
rnd = new System.Random();
grid = g;
//create SubUnits
subunits = new SubUnit[4];
for (int i=0; i<subunits.Length; i++)
subunits[i] = new SubUnit( grid );
}
///<summary>
//Fills a space in the grid
///</summary>
public void FillSpace( int oc, SubUnit.SubUnitType s, int x, int y )
{
grid[y][x] = s;
orbtimer[y][x] = oc;
}
//rotates the SubUnit and all attached SubUnits clockwise around their axis
public void RotateRight()
{
SubUnit temp = this.top;
//rotate pointers and adjust locations of attached SubUnits
this.top = this.left;
if (this.top != null) {
this.top.Location.Y = this.Location.Y - 1;
this.top.Location.X = this.Location.X;
this.top.RotateRight();
}
this.left = this.bottom;
if (this.left != null) {
this.left.Location.X = this.Location.X - 1;
this.left.Location.Y = this.Location.Y;
this.left.RotateRight();
}
this.bottom = this.right;
if (this.bottom != null) {
this.bottom.Location.Y = this.Location.Y + 1;
this.bottom.Location.X = this.Location.X;
this.bottom.RotateRight();
}
this.right = temp;
if (this.right != null) {
this.right.Location.X = this.Location.X + 1;
this.right.Location.Y = this.Location.Y;
this.right.RotateRight();
}
}
//clears all pointers to other SubUnits
public void Clear()
{
this.top = null;
this.bottom = null;
this.left = null;
this.right = null;
}
//determines what image to draw from the image collection
//based on a SubUnit type
private int GetIlIndex( SubUnit.SubUnitType s )
{
int index;
switch(s)
{
case SubUnit.SubUnitType.bSq:
index = 0;
break;
case SubUnit.SubUnitType.gSq:
index = 1;
break;
case SubUnit.SubUnitType.pSq:
index = 2;
break;
case SubUnit.SubUnitType.rSq:
index = 3;
break;
case SubUnit.SubUnitType.ySq:
index = 4;
break;
case SubUnit.SubUnitType.clearing:
index = 5;
break;
case SubUnit.SubUnitType.bCr:
index = 6;
break;
case SubUnit.SubUnitType.gCr:
index = 7;
break;
case SubUnit.SubUnitType.pCr:
index = 8;
break;
case SubUnit.SubUnitType.rCr:
index = 9;
break;
case SubUnit.SubUnitType.yCr:
index = 10;
break;
default:
index = -1;
break;
}
return index;
}
//blow a block in the grid and all bordering blocks that are of the specified
//type return the amount of points racked up in process
private void Blow( int x, int y, SubUnit.SubUnitType t, ref int blowcount, ref int pts )
{
//for scoring
pts += (++blowcount)*GameState.BasePoints;
//clear the current space
//the update/invalidate and sleep calls make the "flash" occur
//adjusting the time the thread sleeps speeds up/slows down the "flash"
gameArea.FillSpace( -1, SubUnit.SubUnitType.clearing, x, y );
this.isDirty = true;
srfGrid.Invalidate();
srfGrid.Update();
Thread.Sleep(25);
//check and blow surrounding spaces
if ((y!=0) && ((gameArea.GetSpace(x,y-1)==t) || (gameArea.GetSpace(x,y-1)==t+5)))
this.Blow(x,y-1,t, ref blowcount, ref pts);
if ((x!=0) && ((gameArea.GetSpace(x-1,y)==t) || (gameArea.GetSpace(x-1,y)==t+5)))
this.Blow(x-1,y,t, ref blowcount, ref pts);
if ((y!=gameArea.Size.Height-1) && ((gameArea.GetSpace(x,y+1)==t) || (gameArea.GetSpace(x,y+1)==t+5)))
this.Blow(x,y+1,t, ref blowcount, ref pts);
if ((x!=gameArea.Size.Width-1) && ((gameArea.GetSpace(x+1,y)==t) || (gameArea.GetSpace(x+1,y)==t+5)))
this.Blow(x+1,y,t, ref blowcount, ref pts);
}
//sets the pointers in a to reference Subunit b, and then
//changes b's location to reflect the change
private void PlaceSubUnits( SubUnit a, SubUnit b, String s)
{
switch(s)
{
case "Top":
a.Top = b;
b.Location.X = a.Location.X;
b.Location.Y = a.Location.Y - 1;
break;
case "Bottom":
a.Bottom = b;
b.Location.X = a.Location.X;
b.Location.Y = a.Location.Y + 1;
break;
case "Left":
a.Left = b;
b.Location.X = a.Location.X - 1;
b.Location.Y = a.Location.Y;
break;
case "Right":
a.Right = b;
b.Location.X = a.Location.X + 1;
b.Location.Y = a.Location.Y;
break;
}//end switch
}