Author: ZapataPhD
Category:Christmas Challenge 2023
System:   C64
Language: BASIC
Len source code: 224 bytes
Len exe file:    186 bytes
Len code only:   224 bytes
Instructions:
Load the prg in VICE. You can compile it in C64Studio for Windows.
Description:
There is a subroutine (called with GOSUB) that draws the single diamond starting from the screen location in the variable X. This soubroutine is called with the 9 coordintes kept in the DATA. The diamond is drawn by incrementing the X coord with the increment kept in the array D. Every 4 increments the direction is changed by choosing the next increment in the array D. This process is repeated for the four sides of the diamond.
Comments:
Tried to keep it in 1 line of code. Got 3. Also the infinite loop is performed calling RUN.