Another binary for you good folks today with some progress.
I now have the river spawning correctly with objects on the banks and in the water. Tanks are driving up to the bank and stopping, planes are zooming past.
You can now move and shoot. Moving bends the bullet in flight, just like in the original game.
Collisions with objects and the riverbanks are working (top line of screen will change to white)
To Do: Make the objects in the river move around (The choppers, boats, balloons) and add the fuel collection and bridge destruction, make the tanks shoot and then make it look a lot nicer!