上周上线的游戏返回数据表明，我的游戏做的比较难，需要加个小地图降低难度，觉得实现小地图的方法还是比较简单的，而且在游戏中比较实用，拿来和大家分享下吧，实现方法其实就是根据缩放比率刷新小地图上人物的X,Y坐标。
实现的效果演示：
小地图类，MiniMap.as
/**
* 游手好学游戏 – 小地图的实现
* @author Vincent
* @website www.8ria.com
*/
package
{
import flash.display.MovieClip;
import flash.display.Sprite;
public class MiniMap extends MovieClip
{
private var _rate : Number;
private var _square : Sprite;
private var _point : Sprite;
public function MiniMap()
{
}
/**
* 安装小地图
* con 小地图的容器
* bigWidth 大地图的宽度
* bigHeight 大地图的高度
* rate 地图缩放比率
* alp 小地图的透明度
*/
public function setupMiniMap(con : Object, bigWidth : Number, bigHeight : Number, rate : Number, alp : Number):void
{
//画小地图
_square = new Sprite();
_square.graphics.beginFill(0×000000);
_square.graphics.drawRect(0, 0, bigWidth*rate, bigHeight*rate);
_square.alpha = alp
con.addChild(_square);
//画点
_point = new Sprite();
_point.graphics.beginFill(0xFF0000);
_point.graphics.drawCircle(4, 4, 4);
con.addChild(_point);
_rate = rate;
}
/**
* 刷新玩家位置
* px 玩家的X坐标
* py 玩家的X\Y坐标
*/
public function updataMiniMap(px : Number, py : Number):void
{
_point.x = px * _rate;
_point.y = py * _rate;
}
}
}
使用小地图类
第一安装MiniMap:
_miniMap = new MiniMap();
_miniMap.setupMiniMap(this,stage.stageWidth,stage.stageHeight,0.25, 0.5);
第二，把_miniMap.updataMiniMap(_player.x,_player.y)放到游戏循环里，就是不断的刷新_player的X,Y坐标
我的文档类如下
/**
* 游手好学游戏 – 小地图的实现
* @author Vincent
* @website www.8ria.com
*/
package{
import flash.display.Sprite;
import flash.display.MovieClip;
import flash.events.Event;
public class IndexDoc extends Sprite
{
private var _miniMap : MiniMap;
private var _player : MovieClip;
public function IndexDoc():void
{
initUI();
initEvent();
}
private function initUI():void
{
_miniMap = new MiniMap();
//安装小地图
_miniMap.setupMiniMap(this,stage.stageWidth,stage.stageHeight,0.25, 0.5);
_player = fly_mc;
}
private function initEvent():void
{
stage.addEventListener(Event.ENTER_FRAME, gameLoop);
}
private function gameLoop(e:Event):void
{
//刷新小地图
_miniMap.updataMiniMap(_player.x,_player.y);
flyHandler();
}
private function flyHandler():void
{
var dx : Number = mouseX – _player.x;
var dy : Number = mouseY – _player.y;
_player.x += dx/10;
_player.y += dy/10;
var angle : Number = Math.atan2(dy, dx) * 180 / Math.PI;
_player.rotation = angle + 90;
}
}
}
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