- a 3d Driving/Rescue game by Ben Mitchell. Copyright 2002-
Power Mac (266Mhz G3 or faster recommended) MacOS 9 or X a 3d Accelerator is required CarbonLib V1.5 or later (MacOS 9 only) DrawSprocketLib (MacOS 9 only)
Visit www.forevergames.co.uk for news and updated information.
Contents:
The Aim Of The Game The Frontend User Interface Flight Controls Playing Through A Level Travelling In Time The Various Game Modes
Performance Tuning Monitor Configuration Customising The Soundtrack Shareware Notice Software License
The Aim Of The Game:
In Gravitass, you and your team of ace pilot nuns must try to evacuate a series of starships and space stations which have recently exploded in outer space.
You are equiped with a mysterious alien time travelling device which allows you to send small vehicles back to a time immediately before the catastrophic explosions occurred, from there you must fly or drive through the cavernous, labyrinthine interiors of the stricken vessels picking up all the people living there, and then find your way back to the time machine before the explosions destroy them, you and everything else on board!
Front End User Interface:
Most parts of the user interface can be controlled by the keyboard:
- Arrow keys for navigation.
- Return key to select the highlighted option.
- Esc key to cancel or exit.It is also possible to use the mouse for all operations.
The online help explains particular function of each control for the different screens - press 'Help' or 'Cmd-L' repeatedly to step through the help information quickly.
Some functions are only available from the menu system which can be opened and browsed by clicking of the top left corner of the game window. The functions available from the menu will change depending on the current game state. To access the menu during play, you must first Pause the game.
When you start a new game, you will be asked for a name - this will be used as the name of the save game file - located in the 'Saves' folder. This file will then be updated automatically at the end of each level - there is no way of manually saving a game during play.
If you make a real mess of a level and want to retry it, you can end the current game (Cmd-E or choose 'End Game' from the menu) do this before finishing the level. You can then reload your save file from the title screen to start the level from scratch. Bear in mind that part of the fun of time travel is that you can go back in time and fix at least some of your mistakes rather than just reverting to an old save position whenever something goes wrong.
Note also that the name you supply for the game file at the start of the game is the name under which you will appear in the high score table should you make the list.
Watch the prerecorded demonstration runs carefully - you can learn a lot about what is possible in Gravitass from them.
When you finish a level, you have the option to save a replay - if you save it into the 'Replays' folder next to Gravitass, then your replays will be added to the attract mode random replay list.
Steering:
Steering is done with the mouse - the position of the mouse pointer on the screen maps to the position of a virtual joystick:
- if the mouse pointer is left of center, the jet car will turn to the left,
- if the mouse is right of the center point the jet car will turn right,
- if the pointer is lower than the center point it will cause the jet car's nose to rise - allowing a car travelling faster than stall speed to take off - think of it as 'pulling up' on a joystick.
- if the mouse is above the center point, it will cause the jet car to dive - its nose will pitch forward and down.The mouse controls are analogue - the further from the center of the screen you position the mouse, the more extreme the turning speed will become
It helps to keep the mouse close to the center point of the screen at all times, except when performing very tight turns.
Anti Gravity Flight:
The jet cars in Gravitass are equipped with anti-gravity flying devices, press the landing gear button once to take off, and a second time to land. When flying,Flying Tips:
Flying is tricky but essential to reaching some of the people who need rescuing. Here are a few notes:- You will probably find it easier to see where you are going during flight from the in-cockpit camera view. However, it is easier to see what's going on when driving from the external view, so keep the switch viewpoint control at your fingertips and swap between the views frequently.
- The hand brake button has several distinct uses:
1 - it can bring a vehicle driving on the ground to a complete halt.
2 - it can gently slow down a jet car during flight.
3 - you must press and keep holding down the handbrake button in order to pick up evacuess, otherwise they will just wave at you and wait for you to put the brakes on.
4 - you can use the handbrake to perform skid turns - yank the mouse pointer rapidly to the left or right and simultaneously press on the brakes - this will turn you round in a tighter space and quicker than doing a 3 point turn. Works best at high speed and only works when the wheels are touching the ground.- Expert flight (available in the options menu) is a completely different flight engine, based on pitch-roll flight mechanics rather than the pitch-yaw system. It is more difficult to steer, but allows a range of stunts impossible with pitch-yaw, such as loop-the-loops. Give it a try once you are comfortable with the basic game... You can switch between expert and basic flight controls at any time other than actually during a sortie.
The goal in playing a level is to try to evacuate all of the people in it sucessfully. You will need to make a number of sorties in order to evacuate everyone. Each sortie should go something like this:
Preflight:
You start the level on the Briefing screen. First select 'Rescue List' - here you will see a 3d map of the level and a list of the people in it - at first they will all be in a colunm on the left of the screen entitled 'Doomed' As you recue people, they will be moved to the right hand colunm marked 'Saved'
At the Bottom left of the screen is a button labelled 'Set Waypoint', click this button and then click on the person you want to rescue first. The location of this person will be hilighted on the map with a flashing orange ball. Check if there are other evacuees nearby (red dots) If so, try to pick them all up in the same sortie.
Press Esc to return to the briefing screen, then choose Team Select. Here you can pick which pilot and which Jet Car to use in this sortie. Picking a pilot is mainly a choice between each nun's Lucky Charm - information about the selected nun's lucky charm's abilities appears in the bottom left of the screen. At the start of the game, most of the nuns will have the same Charm, so just pick anyone.
There are many considerations in choosing a vehicle, how many people are you going to try and pick up is an important one - its no use taking a car with only 2 passenger seats to pick up a group of 4 evacuees. When you have picked a car and driver, press 'Esc' to return to the main Briefing screen.
Before you can start, you need to choose a start time for your sortie in the time line on the right. It is generally best to start the first sortie at an early point in the time line, and start the subsequent sorties at increasingly later times. Refer to the Travelling in Time section for more on this.
Just before you begin your sortie, check the sortie info box at the top left of the screen - it shows you which nun, lucky charm, jet car and waypoint are selected. If Everything seems OK, hit 'Begin Sortie' to start.
In Flight:
You will drop out of a glowing ball of light - this is the time gate: The only way to leave the level alive is to fly or drive back into this.
There should be an orange line leading off into the distance - this line always leads from your current location to the waypoint you selected on the Rescue List screen. If at some point you can't see the orange line, it will be behind you leading off in the other direction. Stop and turn around!
Fly or drive (as you prefer) along the tunnel following the line. You will recognise where the waypoint is beceause the orange line will go straight down into the ground at that point. Look around for people there should be at least one person in the vicinity - when you spot a person, drive close to them - they will wave at you to stop - press down the brakes and keep holding down the brakes button until they have entered the vehicle. If there are other people nearby, wait for everyone to get onboard.
The number of people inside your jet car is indicated by the number of faces in the top left corner of the screen. Empty circles indicate the number of free seats.
Once you have picked up all the people you came for, turn around until you can see a blue line. The blue line always leads from your current location to the time gate exit point. Fly or drive along the line and into the glowing ball of light at the end. Thats it - you're done!
Debriefing:
You should now be presented with the results screen - this is just an image of all the people you have saved - if there are two rows of people, the ones down the front are people you saved this sortie, and the others are ones saved on previous sorties. If someone turns red, falls down and fades away, it means that they were rescued previously, but your latest sortie caused changes that resulted in them not making it out this time around - Check the Travelling In Time section for tips on avoiding this. Press return to continue.
You will next be taken back to the Rescue List screen. Here all the names of the people from the last screen should be written in the green 'Saved' list. Look for anyone who has a blinking exclamation mark next to their name - click on them, they might give you a reward for rescuing them. If not, it means they have a reward, but you need to do something for them to claim it - listen to what they have to say to figure out what it is they want.
You are now ready to start a new sortie. Take as many sorties as you need, but try and save everyone in the end!
Much of the challenge in Gravitass lies in trying to get the most out of the time-travel system. But at first you will mostly find it problematic - you will learn that the actions of a later sortie can mess up a previously successful sortie - the presence of the second jet car causing an evacuee to look the other way at just the wrong moment and miss the car the previously took them to safety, and many other similar aberrations.
When people start disappearing from your rescue list, use the replay option to try to figure out what went wrong, and work out a strategy for avoiding the problem next time.
Here are some tips:
- Try to avoid flying, and especially parking, near to people that you know will be picked up by an earlier sortie at a later time in the level.
- Unless you are REALLY in a hurry, try to hold on the brakes for a couple of seconds after picking someone up - that way they should still make it to your car before you leave even if they are distracted by a later sortie.
- It is often helpful to start with the sorties that start earliest in the level time.
- if you can afford the time, leave a bit of space at the start of the level, so that if you make a mistake, you can go back in time to before the mistake occurred to try and fix it.
- be very careful with the electrobungie - all sorts of additional aberrations are possible when towing a heavy load!
- particularly, never touch an object you know will be picked up by an earlier sortie's electrobungie at a later time.
- Use the learner and practice game modes to experient with until you are comfortable with how time travelling works in Gravitass.
- You can salvage jet cars that crashed in the level by towing them to the slipgate - the car will still be destroyed, but the pilot and any evacuees that were inside it will be saved.
- It is, however, impossible to salvage a car that is destroyed in the end of level explosion - you just can't reach them safely.
- If you get stuck somehow and need to be towed out of the level, press Cmd-E to abort the sortie immediately - cars that have not broken down or been abandoned cannot be picked up by the electrobungie.
There are 7 game modes available in Gravitass - 3 can be accessed from the demo version. You have to rescue the right person in order to unlock a particular mode, after that, the mode will appear in the Game Modes sub-menu.
Learner
This mode is designed to give the beginner time to accustomise themselves to the game controls and the level layouts. There is no end of level explosion - the level simply times out after 5 minutes.Practice
This mode allows you to play levels as one-offs using any jet-car and any lucky charm you like (from the ones that you have managed to obtain while playing other game modes.) There is no hi score table for this mode and you do not win rewards. It is ideal for testing out new routes and learning to use new cars and lucky charms you have recently acquired.Vanilla
Plays the game exactly how it was originally designed. You can obtain this mode in the demo version of Gravitass - you must rescue Tina Sheen and complete a task for her while playing 'Orbital Research' in the Learner game mode.Hide And Seek
Similar to Vanilla, but the evacuees will move around a lot and in a more unpredictable manner, so you will have to search for them.Gravity Challenge
In this mode, Antigravity devices are disabled, you will have to rescue everyone by driving. You are equipped with Smiley Lucky Charms that allow you to jump around a bit, but you will still have to drive up some near vertical walls to reach everyone. Route planning is also more of a chellenge when you cannot fly up some of the vertical tunnels.Alien Abduction
Play the game as a group of aliens abducting people for research purposes. Fly around in flying saucers grabbing people with an improved electrobungie which can accumulate up to 9 people at once into a great big electrobungie ball.No Damage
In this mode your vehicles are immune to crash damage - fly as fast as you want. The down side is that the time limit for rescuing peope has been reduced, so you will need all the extra speed you can muster. Only the end of level explosion will damage your cars in this mode.
Notes
Performance Tuning:
- Use the FPS counter in the bottom right corner of the screen to check how fast the game is running on your system.
- If the renderer name in the bottom left corner of the screen is 'GENERIC' then Gravitass has failed to use your 3d Accelerator (if you have one!) Gravitass will not work at all well without a 3d Accelerator card - try playing on a smaller screen size or with thousands rather than millions of colours to try and get away from generic OpenGL mode.
- This game is capped at 37 Fps, so there is no point in trying to increase the frame rate above this limit! Many modern 3d cards should hardly break a sweat running this game - I apologise if it is not making full use of your system's capabilities, and hope the chunky graphics won't detract from your enjoyment of the game...too much :-)
- Having 'Extra Effects' selected in the Options Menu will improve the 3d special effects in the game somewhat in exchange for taking more CPU and graphics processing time.
- Reducing the texture qualityto 'OK' or 'Fuzzy' can also improve speed, especially on systems with 4mb or less VRAM.
- Running the game on a monitor in Thousands of colours rather than Millions will often improve the frame rate.
- Reducing the screen resolution of the monitor the game is playing on ususally increases the frame rate significantly. As can running the game in windowed mode in a window smaller than the whole screen size.
This game is really designed to be displayed at 640x480 or 800x600 or there abouts - it can automaitcally change the monitor's colour depth and resolution at startup, however, you must manually adjust the monitor's settings before playing Gravitass at least once: the game will then remember what monitor settings you used last time and give you the option to automatically switch that monitor setting when starting subsequent gaming sessions.
Please note that I have put considerable effort into making the game compatible with wide screen monitor aspect ratios and it would break my heart to see people playing the game with those nasty black barn doors down either side of the screeen!
It is possible to replace or supliment the Gravitass game music with your own selection of music files.
Look in the music subfolder of the game:
- It contains a number of folders for the different game states.
- When the game enters a particular state, it randomly selects a sound file from the appropriate folder.
- Any MP3, WAV, General Midi, AIFF, etc. files placed in these folders can be played as part of the game soundtrack. The game uses Quicktime to play music, so if the file plays in the Quicktime Player it should play in Gravitass, too.
- You can also place file aliases in these folders rather than the actual files themselves.
If you like what you have seen from the demo version of Gravitass, you might want to buy the rest of the game. Ordering online with a credit card is secure, easy and quick - the code to unlock the rest of the game will ususally arrive by email within a few hours.
Here's what you get for your money:
- all the level maps (currently 8)
- all the special game modes - Gravity Challenge, Alien Abduction, No Damage, Hide 'n Seek
- more cars to drive - Skoolbus, Poschsta, Bubl-Ka, Rochette, Bugpanza, Yakka Interceptor
- more characters and lucky charmsIf you enjoy playing Gravitass, please support my efforts: the bottom line is that I cannot afford to spend the time making any more MacOS games unless Gravitass pays off some of my bills! :-/
This software is provided 'as is', without any warranty express or implied. If you launch it, you do so at your own risk, and the author will not be held responsible for any loss or damage caused as a result.
This software is freely distributable provided the following files are all presented together (in the same folder or archive) and without modification:
- Gravitass Carbon ( the application program )
- Manual.htm (this document)
- Gravitass Homepage (web link file)
- Online Orders (web link file)
- Music (folder containing game music)
- Replays (folder containing replays)If you intend to include this software package on a CD Rom, or publish a review of Gravitass, I would appreciate (but do not require) an email notification sent to forever.games@virgin.net
Registration codes are provided for the exclusive use of the purchaser and must not be shown or made available to anyone else or broadcast in any way.
Last updated 25 Nov 2002.
©Forever Games forever.games@virgin.net