[Minor] Disallow other actions for building in planning mode

[TaranDahl]

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[Metadorius]

Works good, can you also handle showing the no action map cursor instead of move/no move cursor?

[Starkku]

I would use a more descriptive name for the hook if possible.

[CrimRecya]

You can directly Get_Stack.

[Metadorius]

Look into REF_STACK and LEA_STACK. They should be more suitable here.

[CrimRecya]

Look into REF_STACK and LEA_STACK. They should be more suitable here.

Yes, LEA_STACK should be the most direct, but considering that neither of these functions actually changes the cell struct, both can be used.