//*************************************************************************************************
//*																								  *
//*			******************************判斷方塊7是否可以移動**************************		  *
//*																								  *
//*************************************************************************************************
#include "GameGraph.h"
#include "GameProcess.h"


//*************************************************************************************************
//*																								  *
//*			*********************************狀態1判斷**********************************		  *
//*																								  *
//*************************************************************************************************
unsigned char ucDecideSevenStateOne(ucAction)
{
	switch(ucAction)
		{
		case ACTIONROTATE:
				if(uc_BlockRow<2||uc_BlockLine==1)
					return 0;
				if(ucReadBlock(uc_BlockRow-1,uc_BlockLine-2)==0)
					if(ucReadBlock(uc_BlockRow-2,uc_BlockLine)==0)
						if(ucReadBlock(uc_BlockRow-2,uc_BlockLine-2)==0)
							return 1;
				break;
		case ACTIONRIGHT:
				if(uc_BlockRow<2||uc_BlockLine==1)
					return 0;
				if(ucReadBlock(uc_BlockRow,uc_BlockLine-1)==0)
					if(ucReadBlock(uc_BlockRow-1,uc_BlockLine-2)==0)
						if(ucReadBlock(uc_BlockRow-2,uc_BlockLine-2)==0)
							return 1;
				break;
		case ACTIONDOWN:
				if(uc_BlockRow==20)
					return 0;
				if(ucReadBlock(uc_BlockRow+1,uc_BlockLine)==0)
					if(ucReadBlock(uc_BlockRow,uc_BlockLine-1)==0)
						return 1;
				break;
		case ACTIONLEFT:
				if(uc_BlockRow<2||uc_BlockLine==11)
					return 0;
				if(ucReadBlock(uc_BlockRow,uc_BlockLine+1)==0)
					if(ucReadBlock(uc_BlockRow-1,uc_BlockLine+1)==0)
						if(ucReadBlock(uc_BlockRow-2,uc_BlockLine)==0)
							return 1;
				break;
		default:break;
		}
	return 0;
}

//*************************************************************************************************
//*																								  *
//*			*********************************狀態2判斷**********************************		  *
//*																								  *
//*************************************************************************************************
unsigned char ucDecideSevenStateTwo(ucAction)
{
	switch(ucAction)
		{
		case ACTIONROTATE:
				if(uc_BlockRow==0||uc_BlockRow==20)
					return 0;
				if(ucReadBlock(uc_BlockRow-1,uc_BlockLine)==0)
					if(ucReadBlock(uc_BlockRow+1,uc_BlockLine)==0)
						if(ucReadBlock(uc_BlockRow+1,uc_BlockLine+1)==0)
							return 1;
				break;
		case ACTIONRIGHT:
				if(uc_BlockRow==0||uc_BlockLine==0)
					return 0;
				if(ucReadBlock(uc_BlockRow,uc_BlockLine-1)==0)
					if(ucReadBlock(uc_BlockRow-1,uc_BlockLine)==0)
						return 1;
				break;
		case ACTIONDOWN:
				if(uc_BlockRow==20)
					return 0;
				if(ucReadBlock(uc_BlockRow+1,uc_BlockLine)==0)
					if(ucReadBlock(uc_BlockRow+1,uc_BlockLine+1)==0)
						if(ucReadBlock(uc_BlockRow,uc_BlockLine+2)==0)
							return 1;
				break;
		case ACTIONLEFT:
				if(uc_BlockRow==0||uc_BlockLine==9)
					return 0;
				if(ucReadBlock(uc_BlockRow,uc_BlockLine+2)==0)
					if(ucReadBlock(uc_BlockRow-1,uc_BlockLine+3)==0)
						return 1;
				break;
		default:break;
		}
	return 0;
}

//*************************************************************************************************
//*																								  *
//*			*********************************狀態分派函數*******************************		  *
//*																								  *
//*************************************************************************************************
unsigned char ucMoveDecideSeven(unsigned char ucAction)
{
	switch(uc_BlockState)
		{
		case STATEONE:return ucDecideSevenStateOne(ucAction);break;
		case STATETWO:return ucDecideSevenStateTwo(ucAction);break;
		default:break;
		}
	return 0;
}