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lem-in

Graph traversal algorithmic project

Moves N ants from a "start" graph node to the "finish" graph node, in the least amount of turns. Points, other than start and end, are constrained to contain a single ant at once

Executes in less than 3 seconds

Used just 3 standard C library functions

ssize_t read(int fd, void *buf, size_t count);
void    *malloc(size_t size);
void    free(void *ptr);

Approach

Used modified Dijkstra's algorithm with custom made ant distribution system

How to use

Visualised with SDL2 library. Install it and change the path in makefile accordingly

Run make and ./lem-in < map.lemin_map

To create your own map follow the next syntax
number_of_ants (specify number of ants)
##start
room_name x_coordinate y _coordinate (create a start room
##end
room_name x_coordinate y_coordinate (create an end room)
room_name x_coordinate y_coordinate (create a room)
room_name x_coordinate y_coordinate (create a room)
... (till you listed all the rooms you want)
room_name-another_room_name(link two rooms)
... (till you created as much links as you want)

Visualisation

To start lemin with visualisation, use ./lem-in with option -v
./lem-in -v < map.lemin_map Start and pause visualisation with space lem-in
To move graph drag it with the left mouse button move
To zoom in and out hold l-alt and use mouse wheel scale
Switch counter on and off activates with button C counter