https://github.com/feldim2425/c64fireplace
Petscii Fireplace for the C64
https://github.com/feldim2425/c64fireplace
Last synced: 11 months ago
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Petscii Fireplace for the C64
- Host: GitHub
- URL: https://github.com/feldim2425/c64fireplace
- Owner: feldim2425
- Created: 2020-07-28T19:53:56.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2020-07-28T22:56:44.000Z (almost 6 years ago)
- Last Synced: 2025-01-27T21:33:37.830Z (over 1 year ago)
- Language: Assembly
- Size: 7.81 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# PETSCII Fireplace - Commodore 64
This is a small animated petscii fireplace written in 6502 Assembly (using Kickassembler) on the Commodore 64.
I made it mainly to learn a bit about the C64 and 6502 Assembly so this is most definetly not the most efficient way of doing it
## How to run it
You need to install [Kickassembler](http://www.theweb.dk/KickAssembler/Main.html#frontpage) and run the following command:
```
java -jar KickAss.jar -odir ./bin entry.asm
```
(Replace "KickAss.jar" with the path to the assembler)
After compiling you can use VICE to run it:
```
x64 bin/entry.prg
```
You should also be able to run it on a real C64 using a Ultimate II+ or recompiling it as a Disk or Tape image (Didn't figure out how to do that).
## Changing the image
### Background image
The Background image was created using [Petmate](https://nurpax.github.io/petmate/). You can open the ``PetsciiFireplace.petmate`` file in Petmate and export a KickAssembler assembly file named ``fire.asm`` using Petmates export menu.
### Changing behaviour
The fire generation is hardcoded in assembly by generating random numbers you can change the values in ``entry.asm`` at the ``next:`` label where the probability for a character, position and color is defined.
The values at the ``firechars:`` label define the 8 possible characters that can apper, to extend or shorten this list you have to modify the ``RandomFireLine`` macro. Modifying it without changing the length can be done without changing the code.
The speed is defined by the ``ticktime`` constant.