当我期望它们保持不变时，图像会发生变化。 [英] Images getting changed when I expect them to remain untouched.

问题描述

我有使用背景图片地图的游戏。在地图上我绘制游戏片段，当用户点击某个区域时，我会在他们点击的部分上画一个高亮显示。所以我创建了4个全局图像，每个图像一个加一个传递到绘图部分。最终结果是所有4个图像看起来都一样。它必须与通过引用传递有关 - 它们是否都是相同的图像？我希望不同名称的变量保持独立。当我使用克隆或新的时它可以正常工作但是程序在点击20次后内存不足。如果我丢弃图像，它们都会变成空白。很高兴找到一种方法来使这些图像通过值传递而不是引用。它们都是相同尺寸，原始的扁平覆盖层。但是我需要保留原版和原版+游戏部分，最后突出显示的叠加是可以消耗的。关于正确方法的任何建议吗？

I have game that uses a background image map. On the map I draw game pieces, and when the user clicks on an area I draw a highlight on the section they clicked. So I''ve created 4 global images, one for each plus one to pass to the drawing section. The final result is that all 4 images look the same. It must be something to do with passing by reference - are they all the same image? I would expect variables of different names to remain independent. When I use clone or new it works correctly but the program runs out of memory after 20 clicks. If I dispose of an image, they all go blank. It would be nice to find a way to make these images pass by value and not reference. They are all the same size, flattened overlays of the original. But I need to preserve the Original and the original + the game pieces, the final highlighted overlay is expendable. Any suggestions on the right approach for this?

//One of the scenarios has this:
 
Draw d = new Draw();
PassMap = GameMap;
d.DrawMap(UiP, MapHexes, PassMap, Globals.Gaul, Globals.Germania, out DrawnMap);
map.BackgroundImage = DrawnMap;
map.BackgroundImageLayout = ImageLayout.Stretch;
map.Refresh();
 
//So I would expect the DrawnMap to have images on it that the GameMap doesn't.
 
//The mouseclick has this:
 
PassMap = DrawnMap;
mt.selectHex(Globals.CurrentHex, zoom, MapHexes, HexHighlight, PassMap, out HighlightMap);
map.BackgroundImage = HighlightMap;
map.BackgroundImageLayout = ImageLayout.Stretch;
map.Refresh();
 
//Here is where the area is highlighted:
 
public void selectHex(int hex_id, int zoom, List MapHexes, Bitmap HexHighlight, Bitmap PassMap, out Bitmap HighlightMap)
{
using (Graphics g = Graphics.FromImage(PassMap))
g.DrawImage(HexHighlight, new Rectangle(MapHexes[hex_id].Hex_x - 48, MapHexes[hex_id].Hex_y - 55, HexHighlight.Width, HexHighlight.Height));
HighlightMap = PassMap;
}

当我点击地图时，我会得到一串突出显示的区域，当我只想要一个时。显然，HighlightMap是其他参考地图。如果我使用new或clone，我会得到预期的结果，但是在点击20次后内存不足。



不确定这有多大帮助。

When I click around the map, I get a string of highlighted areas, when I only want one. Apparently the HighlightMap is the other maps by reference. If I use new or clone, I get the expected result, but run out of memory after 20 clicks.

Not sure this helps much.

推荐答案

当你将Passmap指定为Drawnmap时，它有一个参考，尝试克隆地图。

我不知道对象的类型是什么 Drawnmap 但是你只需要替换它。

When you assign Passmap as Drawnmap it has a reference, try cloning the map.
I don''t know what the type of object Drawnmap is but you''ll just have to replace it.

Passmap = (MapType)Drawnmap.Clone()

如果适用，请确保更改克隆其他地图。

Make sure you change you clone your other maps if this works for you.

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