baseobject.cpp

射击小游戏

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

#include "stdafx.h"
#include "Shoot.h"
#include "BaseObject.h"
#include "ShootView.h"

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

//////////////////////////////////////////////////////////////////////
// 屏幕精灵类实现文件
//////////////////////////////////////////////////////////////////////
//构造函数
//参数：
//x_value：屏幕X坐标
//y_value：屏幕Y坐标
//输出：在屏幕特定位置放置一个对象（具体是什么要看派生类而定）
//注释：各个派生类必须有自己的构造函数。这样才能将实际的物体信息填充到成员变量中
BaseObject::BaseObject(int x_value,int y_value)
{
	//初始化屏幕坐标
	m_x = x_value;
	m_y = y_value;
	//初始化贴图坐标和尺寸，都是0。
	m_isx = 0;
	m_isy = 0;
	m_w = 0;
	m_h = 0;
	//初始化生命力和攻击力
	m_iLife = 1;
	m_iAttackness = 1;
	//是否被抛弃
	m_bUsed = true;
	//初速度
	m_vx = 0;
	m_vy = 0;
}

BaseObject::~BaseObject()
{

}
extern CShootApp theApp;

void BaseObject::Update()
{
	//获得当前视类指针，以便得到设备文本句柄
CShootView * pView = (CShootView*)((CFrameWnd*)(theApp.m_pMainWnd))->GetActiveView();//->GetActiveView();
 
	if(m_iLife>0)//每一次计时器触发的时候就更新当前坐标
	{
		m_x +=  m_vx * pView->GetFPS();	
		m_y += m_vy * pView->GetFPS();
		
	}
	//画出该对象到屏幕
	pView->DrawObject(this);
}
bool BaseObject::OutOfSight()
//判断对象是否出界
{
	CShootView * pView = (CShootView*)((CFrameWnd*)(theApp.m_pMainWnd))->GetActiveView();
	return m_x+m_w<0 || m_y+m_h<0 || m_x>=pView->GetClientWidth() || m_y>=pView->GetClientHeight();
}
//调整对象的坐标，不让他出界
void BaseObject::AdjustPosition()
{
	CShootView * pView = new CShootView;
	m_x -= m_w / 2;
	if( m_x < 0 )
		m_x = 0;
	else if( m_x + m_w - 1 >= pView->GetClientWidth() )
		m_x = pView->GetClientWidth() - m_w;

	if( m_y <0 )
		m_y = m_y - m_h;
	else
		m_y -= m_h / 2;
	delete pView;
}