controls and optimizations

added 2 buttons
Fire button
and change fire direction

fixed issue with low fps, updates were called to new constructors
these were placed in a more optimal place. Various variables were added
to the dispose method.

game is now version .8 pre alpha
Code clean up

code for bullets was optimised
Added level boundaries
UI and weapon drain fixed

UI has some new elements:
energy bar
test hud background image

Weapons will not fire if there is not enough energy to fire them,
weapons do not drain below 0%
Basic PowerUps Added

One power up type has been added
the new class allows the generation of a
power up type, this increase the weapons power level.
The effect has not been applied to weapon duplication yet.
Power ups added

Added array of power ups

speed
lives
weapon lv
special
bonus points
energy

//note
energy is draining on energy pickup
speed not changing with pickup
Merge pull request #1 from AaronBowers/Edit-Branch

Edit branch