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Improve shape table program
Now fully functional. Will also warn you if your shape table has zero fields that will be ignored.
This commit is contained in:
Vince Weaver
parent
2282929065
commit
6b6d6d0216
158
presenter_demo/num.table
Normal file
158
presenter_demo/num.table
Normal file
@ -0,0 +1,158 @@
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# Number of shapes
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13
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# Number "0"
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START
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NUP
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RT
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DN
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DN
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LT
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LT
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UP
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UP
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RT
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STOP
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# Number "1"
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START
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NUP
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DN
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DN
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STOP
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# Number "2"
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START
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NUP
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NLT
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RT
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RT
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DN
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LT
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LT
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DN
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RT
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RT
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STOP
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# Number "3"
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START
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NUP
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NLT
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RT
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RT
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DN
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LT
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LT
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NRT
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NRT
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DN
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LT
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LT
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STOP
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# Number "4"
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START
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NUP
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NLT
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DN
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RT
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RT
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UP
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NDN
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DN
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STOP
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# Number "5"
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START
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NUP
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NRT
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LT
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LT
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DN
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RT
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RT
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DN
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LT
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LT
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STOP
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# Number "6"
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START
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NUP
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NRT
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LT
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LT
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DN
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RT
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RT
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DN
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LT
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LT
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UP
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STOP
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# Number "7"
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START
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NUP
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NLT
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RT
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RT
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DN
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DN
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STOP
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# Number "8"
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START
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LT
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UP
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#
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RT
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RT
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#
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DN
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LT
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NRT
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#
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DN
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LT
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#
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LT
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UP
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STOP
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# Number "9"
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START
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LT
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UP
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#
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RT
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RT
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#
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DN
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LT
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NRT
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#
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DN
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STOP
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# "."
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START
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NDN
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UP
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STOP
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# "-"
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START
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LT
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NRT
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#
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RT
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STOP
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# "W"
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START
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NUP
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NLT
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#
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DN
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DN
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#
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RT
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UP
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#
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RT
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DN
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#
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RT
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UP
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#
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UP
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STOP
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132
shape_table.c
132
shape_table.c
@ -1,4 +1,7 @@
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/* http://www.atariarchives.org/cgp/Ch03_Sec05.php */
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/* Creates an AppleSoft BASIC shape table */
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/* See the AppleSoft manual for info on how this works */
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/* Other online info (I'm looking at you, atariarchives.org) */
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/* is inaccurate */
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#include <stdio.h>
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#include <string.h>
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@ -13,6 +16,25 @@ void set_offset(current_shape,current_offset) {
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table[2+(current_shape*2)+1]=(current_offset>>8)&0xff;
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}
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#define LOC_A 0
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#define LOC_B 1
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#define LOC_C 2
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static void warn_if_zero(unsigned char byte, int line) {
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/* Check to see if we're accidentally ignoring bytes */
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if (byte==0) {
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fprintf(stderr,"Warning, all-0 byte will be ignored on line %d!\n",
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line);
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}
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if ((byte&0xf8)==0) {
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fprintf(stderr,"Warning, ignoring C and B due to 0 on line %d!\n",
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line);
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}
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}
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int main(int argc, char **argv) {
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char string[BUFSIZ];
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@ -20,21 +42,24 @@ int main(int argc, char **argv) {
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int table_size=0;
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int num_shapes=0;
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int current_offset=0,current_shape=0;
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int i;
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int i,line=1;
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int command=0,sub_pointer;
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while(1) {
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result=fgets(string,BUFSIZ,stdin);
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if (result==NULL) break;
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line++;
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/* skip comments and blank lines */
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if ((string[0]=='#') || (string[0]=='\n')) continue;
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sscanf(string,"%d",&num_shapes);
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break;
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}
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printf("Num shapes: %d\n",num_shapes);
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//fprintf(stderr,"Num shapes: %d\n",num_shapes);
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table[0]=num_shapes;
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table[1]=0;
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@ -42,23 +67,106 @@ int main(int argc, char **argv) {
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current_shape=0;
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current_offset=2+2*(num_shapes);
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set_offset(current_shape,current_offset);
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for(current_shape=0;current_shape<num_shapes;current_shape++) {
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/* Find START */
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set_offset(current_shape,current_offset);
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while(1) {
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result=fgets(string,BUFSIZ,stdin);
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if (result==NULL) break;
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/* Find START */
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/* skip comments and blank lines */
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if ((string[0]=='#') || (string[0]=='\n')) continue;
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while(1) {
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result=fgets(string,BUFSIZ,stdin);
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if (result==NULL) break;
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line++;
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if (!strstr(string,"START")) continue;
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/* skip comments and blank lines */
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if ((string[0]=='#') || (string[0]=='\n')) continue;
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}
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if (strstr(string,"START")) break;
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}
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/* READ DATA */
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sub_pointer=LOC_A;
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while(1) {
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result=fgets(string,BUFSIZ,stdin);
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if (result==NULL) break;
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line++;
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/* skip comments and blank lines */
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if ((string[0]=='#') || (string[0]=='\n')) continue;
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if (strstr(string,"STOP")) break;
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/* yes, this is inefficient... */
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if (strstr(string,"NUP")) command=0;
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else if (strstr(string,"NRT")) command=1;
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else if (strstr(string,"NDN")) command=2;
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else if (strstr(string,"NLT")) command=3;
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else if (strstr(string,"UP")) command=4;
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else if (strstr(string,"RT")) command=5;
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else if (strstr(string,"DN")) command=6;
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else if (strstr(string,"LT")) command=7;
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else fprintf(stderr,"Unknown command %s",string);
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if (sub_pointer==LOC_A) {
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table[current_offset]=(command&0x7);
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sub_pointer=LOC_B;
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}
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else if (sub_pointer==LOC_B) {
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table[current_offset]|=((command&0x7)<<3);
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sub_pointer=LOC_C;
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}
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else {
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/* Try to fit in LOC_C. This can only hold no-draw moves */
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/* Also a LOC_C of 0 is ignored */
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if ((command&0x4) || (command==0)) {
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/* Write to LOC_A instead */
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warn_if_zero(table[current_offset],line);
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current_offset++;
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table[current_offset]=(command&0x7);
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sub_pointer=LOC_B;
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}
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else {
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/* write to LOC_C */
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table[current_offset]|=((command&0x3)<<6);
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warn_if_zero(table[current_offset],line);
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current_offset++;
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sub_pointer=LOC_A;
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}
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}
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}
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if (sub_pointer!=LOC_A) current_offset++;
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table[current_offset]=0; current_offset++;
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}
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table_size=current_offset;
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/* put near highmem */
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int address=0x1ff0-table_size;
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printf("10 HIMEM:%d\n",address);
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printf("20 POKE 232,%d:POKE 233,%d\n",(address&0xff),(address>>8)&0xff);
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printf("30 FOR L=%d TO %d: READ B:POKE L,B:NEXT L\n",
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address,(address+table_size)-1);
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printf("35 HGR:ROT=0:SCALE=2\n");
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printf("40 FOR I=1 TO %d: XDRAW I AT I*10,100:NEXT I\n",
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num_shapes);
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printf("90 END\n");
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for(i=0;i<current_offset;i++) {
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if(i%10==0) printf("%d DATA ",100+i/10);
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printf("%d",table[i]);
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