// DrawAssist.cpp: implementation of the DrawAssist class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "aa.h"
#include "DrawAssist.h"
#include "Block.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

DrawAssist::DrawAssist()
{
	
	height=15;
	for(int i=0;i<10;i++)
		for(int j=0;j<20;j++)
			blocks[i][j]=false;
}

DrawAssist::~DrawAssist()
{
	
}

void DrawAssist::DrawButton(int x, int y)
{
	CBitmap* pBitmap = new CBitmap;
	BITMAP BmpInfo;
	CBitmap* pOldBitmap;
	
	
	pBitmap->LoadBitmap(IDB_BITMAP2);
	pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
	pBitmap->GetBitmap(&BmpInfo);
	
	// x,y為繪圖位置 ，必要時此語句要有For（..；..；..）控制
	pDC->BitBlt(x*height,y*height, BmpInfo.bmWidth, BmpInfo.bmHeight, pDisplayMemDC, 0, 0, SRCCOPY); 
	
	pDisplayMemDC->SelectObject(pOldBitmap);
	pBitmap->DeleteObject();
	
	
	delete pBitmap;   
}



void DrawAssist::DrawChessBox()//設置背景方格
{
	for(int i=0;i<10;i++)
		for(int j=0;j<20;j++)
		{
			if(blocks[i][j])
				DrawButton(i,j);
		}
}



void DrawAssist::DrawBlock(Block &block)//畫方格
{
	CPoint* p = block.GetMembers();
	for(int i=0;i<4;i++)
		DrawButton(p[i].x,p[i].y);
}

void DrawAssist::SetDC(CDC *pDC, CDC *pDisplayMemDC)
{
	this->pDC = pDC;
	this->pDisplayMemDC = pDisplayMemDC;
}

BOOL DrawAssist::CanMoveDown(Block& block)//下移條件
{
	CPoint* p = block.GetMembers();
	for(int i=0;i<4;i++)
	{
		if(p[i].y>=19)return false;
		if(blocks[p[i].x][p[i].y+1])
			return false;
	}
		return true;
}
BOOL DrawAssist::CanMoveLeft(Block &block)//左移條件
{
	CPoint* p = block.GetMembers();
	for(int i=0;i<4;i++)
	{
		if(p[i].x<=0)return false;
		if((blocks[p[i].x-1][p[i].y]))
			return false;
	}
		return true;
}


BOOL DrawAssist::CanMoveRight(Block &block)//右移條件
{
	CPoint* p = block.GetMembers();
	for(int i=0;i<4;i++)
	{
		if(p[i].x>=9)return false;
		if((blocks[p[i].x+1][p[i].y]))
			return false;
	}
		return true;
}

void DrawAssist::AddBlock(Block &block)//填加方格
{
	CPoint* p = block.GetMembers();
	for(int i=0;i<4;i++)
	{
		blocks[p[i].x][p[i].y]=true;
	}
}