The Mechcommander Gold mission editor extender is an excellent tool for adding many things that were left out of the game’s editor. Please note I did not create this program, and I am not responsible for it’s use and functionality:
If you need help using the editor have a look at the tutorial below. There are several sections to this tutorial:
The Graphic User Interface (GUI)
The mission editor extender has a small and easy to use GUI. To use the extender, first save your changes in the mechcommander mission editor. After you’ve saved your changes switch to the extender, add what elements you need and when you’re done press generate. Finally go back to the mechcommander mission editor and select generate .DPK to create you map.
Once you have a map selected (you will have to have created one through the original editor for it to appear on this list) click on the Objectives button to bring up the objectives window. Here you can see the list of all objectives that exist in the mission you selected. You can create up to 8 objectives total (4 from the editor, 4 from the extender). You can only delete extender objectives in the extender. The extender also allows you to add resource rewards and time limits to objectives; something you couldn’t previously do.
The Drop Zones window shows you all drop zones in the selected mission. You can edit the location, the formation and the spread of your mechs when they are deployed in the mission.
The lookout window lets you specify lookout points. When specifying a lookout point use the editor to find the x and y coordinates and then experiment to find the size you want your trigger point to be (in terms of radius of a circle). You can also specify a trigger condition, and the menu changes to accommodate this. With the structure related objectives make sure to specify the structure block and structure vertex, not it’s x and y coords.
To add salvage you will have to find a capturable structure and specify its structure and vertex block values. For best results try to use only the structures that appear in the editor’s Salvage menu or you may be unable to start your map.
To damage a building enter it’s structure and vertex block values and specify a trigger condition in a similar way to the lookout menu. The number you enter will be a percent value of damage.
You can specify new units to appear with a trigger. This is most useful for adding allies midway through a mission e.g. after capturing a prison complex. This window functions in a similar way to the Lookout and Damages windows. Specify the structure and vertex blocks with building related triggers and x and y coords for area triggers. *NOTE* you will want to disable the purchase of mechwarriors that will appear in the mission through this function otherwise you will have problems down the road. Adding multiple units in a single mission can also be somewhat finicky.
If you’ve read through this tutorial and are still having trouble with the Mechcommander Gold mission editor extender, please post in the comments below. To increase your chances of a solution being found include as much detail as possible (which version of the game you’re running, what operating system you have, what video card you have and steps to reproduce the issue). Screenshots are also very useful!