Main

Argument Check: Immediately rejects execution if the map argument is missing or if there are too many arguments.
File Check: Verifies the file extension and existence before allocating any memory.
Initialization: Calls init_game to ensure all pointers in t_game are NULL. This prevents "conditional jump" errors in Valgrind later.
Raw Parsing: Reads the file into memory.
Data Loading (load_map_data): This static helper acts as a checklist. It runs every validation module one by one. If any of them return 0 (Error), the main function immediately jumps to free_resources and exits.
Game Launch: If all checks pass, it proceeds to open the graphical window (next phase).
Cleanup: Regardless of whether the game ran successfully or failed during loading, free_resources is called to ensure 0 memory leaks.
Flowchart

Parser

This is the very first check.
It ensures the file has the correct name format and can be opened by the system before we even try to parse memory
Flowchart

It is responsible for interacting with the File Descriptor
Read line by line usingget_next_line
It does not remove empty lines during reading. They are kept in the linked list so that the validator (check_map_spaces) can detect if the map is split in two.
Flowchart