# Crazy Climber

## For the TI-99/4A home computer (1981)

* Ported from Crazy Climber arcade game by Nihon Bussan Co. Ltd., 1980.
* TI-99/4A version by Rasmus Moustgaard, 2025.

## Requirements

* TI-99/4A with 32K RAM expansion
* Ability to load a 128K ROM cartridge, e.g. physical cartridge or FinalGROM99

## Optional

* Speech synthesizer
* Mounted twin joysticks
* F18A or PICO9918 for faster gameplay (1)

(1) The TMS9918A has a bug that prevents the use or more than 8 sprites in the graphics mode optimal for smooth scrolling.
F18A and clones don't have this bug, so here the game can run in the optimal mode. If you have an F18A and want to run the 
game at the original speed, press F at the opening screen with the big logo to bypass the optimal mode.

## Keys

* S - left hand left
* F - left hand right
* E - left hand up
* D - left hand down
* J - right hand left
* L - right hand right
* I - right hand up
* K - right hand down

## Joysticks

* Left joystick controls left hand
* Right joystick controls right hand

## Tips

* Move left and right hand to the left at the same time to automatically climb to the left. 
* Move left and right hand to the right at the same time to automatically climb to the right.
* If the red/cyan text combination is difficult to read on your screen, press C to cycle between different colors.

## Building from source

* Requires xdt99 assembler (https://github.com/endlos99/xdt99) and Java
* Run make.bat (only supported on Windows)

## License

The code and game is free to use for non-commercial purposes. You are not allowed to sell this game without my permission.

## Acknowledgements

Thanks to:
* Ralph for his xdt99 tools
* Martin for his MOD2PSG2 player
* Eric Lafortune for his speech tools (https://github.com/EricLafortune/VideoTools/blob/master/docs/ConvertWavToLpc.md)

## Contact

Please post comments or questions at: https://forums.atariage.com/topic/383261-crazy-climber