Yo dawg I herd u liek macros

generate_map: MACRO
MAP_ID_NAME equs STRCAT("MAP_ID_", STRUPR("\1"))

SECTION "\1 map blocks", ROMX[$4000],BANK[MAP_ID_NAME]
\1MapChunks:

    PURGE MAP_ID_NAME


MAP_FOLDER_PATH equs STRCAT(STRCAT("chunks/", STRLWR("\1")), "/chunk")

ROW_ID = 0
    REPT 64
CHUNK_ID = 0
        REPT 128
COORDS equs STRCAT(STRCAT(STRSUB("{ROW_ID}", 2, STRLEN("{ROW_ID}") - 1), "x"), STRSUB("{CHUNK_ID}", 2, STRLEN("{CHUNK_ID}")))

            PUSHS
INCLUDE "{MAP_FOLDER_PATH}{COORDS}.blk"
            POPS
            IF DEF(CHUNK_NAME)
                db HIGH(CHUNK_NAME), BANK(CHUNK_NAME)
                PURGE CHUNK_NAME
            ELSE
                ; Empty chunk
                dw 0
            ENDC

            PURGE COORDS
CHUNK_ID = CHUNK_ID + 1
        ENDR

        PURGE CHUNK_ID
    ENDR
    PURGE ROW_ID
    PURGE MAP_FOLDER_PATH
ENDM