Middle Mouse 3D Camera

[robo_d 5]

Hey everyone, I started work on a plugin that would add a RTS-style 3D camera to the game using the Middle Mouse (M3). It's very experimental- a total WIP. But I thought I'd throw it out there to the community to take a look at.

https://github.com/UncleUncleRj/SC4-3DMouseCam

Remember, it's currently an alpha-stage plugin, so BACKUP any important cities/regions you have before trying it. In fact, I suggest making a whole new region and city just to play around with it.
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[Null 45 3,043]

Interesting idea, it is nice to have more people developing SC4 DLLs . Other DLLs may also hook the middle click message in the city view, but there is no way to know if that would be a conflict.

From the Mac symbols, Maxis defined button up/down message codes for the middle mouse button, but they never got around to checking for those messages in the game's window procedure or adjusting the rest of the code to provide middle mouse button support. I find that a shame as you could do some fun things with a ViewInputControl that had middle click filtering, such as implement this type of mod. The city right click scrolling is implemented as a ViewInputControl.

Looking at the code I have a few notes:

• Deriving from cRZMessage2COMDirector could have saved you the effort of reimplementing the QueryInterface/AddRef/Release logic.
• SC4 has a built-in way of hooking window messages, the AddWinProcFilter function in the cIGZCanvasW32 interface.
  • My Region Census UI DLL uses that interface to implement a middle click hook in the region view.

[robo_d 5]

@Null 45 Cool! Thank you for the advice. I went ahead and tested this out and got a huge performance boost while dragging the camera around over the previous model. I'll merge the code and make a new release probably later today.