
Grav version 1.4 by bobti89
for TI68k (TI89, TI89T, TI92+, V200)
01/04/2019
Notes
- I can't be liable for damages caused by this programme.
- You can distribute this program if you don't modify the original archive (no file added or removed).
Description
Purpose
Grav is a game with simple purpose. You are in a 2D world with gravity, handle a ball, and you have to reach the end :
(Arrivée in french).
The only problem (there must be one) is you have to avoid spikes and other traps (jumpers, fans...).
You must learn to move the small ball.
Here is a list of different blocks in the game :
-
Walls
-
Spikes
Don't touch them else your ball explode !
-
Jumpers
They make you bounce the higher than possible.
-
Fans
They push you when there aren't object between them and you.
-
Ice
It slips !
-
Blinking spikes
You must cross them when they are hidden !
-
Gravity modifiers
The (+) increases gravity and the (-) reverses it and (o) resets it to the original value. The arrow activates the gravity and the cross deactivates it.
-
Moving spikes
They follow a direction (vertical or horizontal) and bounce on objects. Don't touch them !
-
Malus who remove or reverse arrow keys.
-
Checkpoints
If you lose, you restart to the last checkpoint.
You are timed when playing, records are saved.
Images
Installation
Send grav.89z and gravlvl.89y to your calculator.
Type grav() in home screen
You can open a level (or a levels pack) by typing grav("pack_name").
Have fun !
Interaction
In game :
Key |
Action |
Arrows |
Handle the ball |
F2 |
Come back to last checkpoint |
APPS |
Switch off the calculator(boss key) |
ESC |
Quit |
+ or - |
Change contrast |
In menu :
Key |
Action |
Left or right |
Change level |
Diamond + left or right |
Change level by step of 10 |
ESC |
Quit |
ENTER or 2ND |
Start |
+ or - |
Change contrast |
Project
Historic
Date |
Version |
Description |
01/04/2019 |
1.4 |
- Saving ghosts. Use option "save_ghost" in "gravcfg.89t" file to activate.
|
05/16/2013 |
1.3 |
- New menu "LOAD" to select a level and load it.
- Add objects to activate or deactivate gravity, and missing blinking spikes.
- If no level in parameters, load the first level found.
|
10/07/2006 |
1.2 |
- Translation of "Lisez-moi" in english (Read-me).
- Now there is double buffering in the game.
- Records are saved into level file (give the opportunity to save a record in a level you just be created).
- Ghosts, but you can't save them.
- Fix bugs.
|
05/06/2005 |
1.1 |
- Translation of the game in english (two versions).
- A lot of optimisations.
- Fix bugs.
- Executable work with every calculators.
|
12/30/2004 |
1.0 |
- Moving spikes are perfectly integrated.
- Creation of a hash table to handle moving spikes and particularly collisions between them.
- New blocks to remove or reverse arrow keys.
- Add a key to come back to the last checkpoint.
- More than 100 levels !
|
12/10/2004 |
0.9 |
- Beginning of moving spikes (without collision).
- Update the collide engine.
- 80 levels.
- Centered game on TI92/V200.
- Fix bugs.
- Optimisations (more than 2ko won in compressed file !).
|
11/15/2004 |
0.8 |
- Complete reprogramming of the levels editor.
- Fix bugs.
- Use VAT to handle files.
|
08/16/2004 |
0.7 |
- Integrate extgraph library.
- 40 levels.
- Fix bugs.
- Public version on yaronet.com and tigen.org.
|
04/26/2004 |
0.6 |
- Records handler.
- 28 levels.
- Blinking spikes.
- Levels editor.
|
03/08/2004 |
0.5 |
- Checkpoints and fans.
- New game engine for best accuracy.
- New menu with gray colors.
- Now 20 levels.
- The ball explode :)
- Timer.
|
01/15/2004 (19:58) |
0.4 |
- Creation of a little menu in black and white.
- Now 2 levels.
- Jumpers.
- First public version.
- TI92+ version. (in the top left corner of the screen).
|
01/15/2004 (18:35) |
0.3 |
- Project creation.
- Gray colors.
- Collides engine.
- One level.
|
12/20/2003 |
0.1 |
- Beginning of a game engine in black and white, the ball bounce on screen edges.
|
Future
- Moving objects and not only spikes. Particularly the invisible object to handle perfectly the moving objects.
- Checkpoints to cross in wanted order to force the player in a wanted path.
Informations
Systems
Machines : Texas Instrument Calculators : TI89, TI89T, TI92+ and V200 ( HW1, HW2, HW3 or HW4)
OS : AMS 1.0 or newer, Pedrom
Tests
Tested on TI89 HW1 AMS 2.05 and TI89 HW2 AMS 2.05. For other calculators, tested on VTI and TI-emu emulators.
Dependencies
No dependence, it's a nostub program.
Contact
For any suggestions, critics or bugs, please send me a mail at :
bobti89@aliceadsl.fr
Thanks
A big thanks to :
- My brother (liero) for his comments, tests and his help.
- Sebou for his strenuous tests, levels and his help.
- TIGCC and GCC4TI teams.
- Exgraph creators.
- Lionel Debroux for his comments and suggestions.
- Everybody who made or will make comments on this game.