Defenda  		   by  Steve Slater			August 2000
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This is my first program written with DIV and as you've probably guessed
its a basic version of the Williams classic Defender.

This code represents the basic framework for the game and is a first draft
without any polish and a lot of rough edges.

How To Play
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Double click the defenda.exe file to run.

Use the cursor keys to move the ship around the screen and the control key
to fire.

Kill all of the landers in each wave to progress onto the next level while
protecting the civilians running aimlessly around the bottom of the screen.

At present there are 10 landers in the first level and this number
increases by 5 in each progressive level. The number of bombers and pods
also increases by 1 in each new level.

The landers will move in the general direction of the player until they
see a civilian. At which point they will freeze the civ and move directly
towards it, pick it up and move to the top of the screen, turning it into
a mutant. The mutants move directly towards the player in an attempt to
destroy the ship.

Still To Do
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Start screen, demo and alien descriptions
Additional alien types to be added for the later levels.
Only a few sounds and basic explosions at the moment.
Tidy up graphics.
Saveable high score.
Scanner(maybe, if i can work out how).
Smart Bombs.
Hyperspace.
Convert to 800x600 (once i get the lower rez version finished).
Tidy up the code and standardise the variables (they're a mess!!)

Issues
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There are two problems with the code i know of at the moment.

Cant move up and left while firing - I dont know why(!)
Lander count variable sometimes doesn't decrement properly.