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hgr-utils: update shape table to be a bit more useful

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This commit is contained in:
Vince Weaver 2020-10-07 01:33:30 -04:00
parent 9b092d5b27
commit 36b8dc6b39
1 changed files with 24 additions and 3 deletions
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27
hgr-utils/shape_table.c
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@ -1,8 +1,18 @@
/* Creates an AppleSoft BASIC shape table */
/* See the AppleSoft manual for info on how this works */
/* Other online info (I'm looking at you, atariarchives.org) */
/* Some online info (I'm looking at you, atariarchives.org) */
/* is inaccurate */
/* Format of table is: */
/* 1 byte -- num shapes */
/* 1 byte -- don't care */
/* offsets (repeats): 2 bytes (low/high) offset from start to each shape */
/* Data (repeats), 0 at end of each */
/* data packed in as XX YYY ZZZ */
/* ZZZ = first dir, YYY = next, XX = last, can only be no-draw as 2 bits */
/* note XX can't be NUP (00) */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
@ -229,6 +239,10 @@ int main(int argc, char **argv) {
if (debug) fprintf(stderr,"LT\n");
command=7;
}
else if (!strcmp(string,"NOP")) {
if (debug) fprintf(stderr,"NOP\n");
command=8;
}
else {
fprintf(stderr,"Unknown command '%s'",string);
}
@ -242,7 +256,9 @@ int main(int argc, char **argv) {
sub_pointer=LOC_C;
}
else {
/* Try to fit in LOC_C. This can only hold no-draw moves */
/* Try to fit in LOC_C. */
/* This can only hold no-draw moves */
/* Also a LOC_C of 0 is ignored */
if ((command&0x4) || (command==0)) {
@ -256,7 +272,12 @@ int main(int argc, char **argv) {
}
else {
/* write to LOC_C */
table[current_offset]|=((command&0x3)<<6);
if (current_offset==8) {
}
else {
table[current_offset]|=((command&0x3)<<6);
}
warn_if_zero(table[current_offset],line);