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Begin factoring out the command interpreter.

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This commit is contained in:
Eric S. Raymond 2017-05-23 14:48:41 -04:00
parent 12f909bcc9
commit baa508a683
1 changed files with 23 additions and 14 deletions
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37
main.c
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@ -51,6 +51,8 @@ extern int action(long);
* MAIN PROGRAM
*/
static void do_command(void);
int main(int argc, char *argv[]) {
int ch;
@ -122,6 +124,13 @@ L1: SETUP= -1;
LIMIT=330;
if(NOVICE)LIMIT=1000;
for (;;) {
do_command();
}
}
static void do_command(void) {
/* Can't leave cave once it's closing (except by main office). */
L2: if(!OUTSID(NEWLOC) || NEWLOC == 0 || !CLOSNG) goto L71;
@ -441,7 +450,7 @@ L4090: I=4090; goto Laction;
L5000: I=5000;
Laction:
switch (action(I)) {
case 2: goto L2;
case 2: return;
case 8: goto L8;
case 2000: goto L2000;
case 2009: goto L2009;
@ -477,7 +486,7 @@ L8000: SETPRM(1,WD1,WD1X);
L8: KK=KEY[LOC];
NEWLOC=LOC;
if(KK == 0)BUG(26);
if(K == NUL) goto L2;
if(K == NUL) return;
if(K == BACK) goto L20;
if(K == LOOK) goto L30;
if(K == CAVE) goto L40;
@ -508,11 +517,11 @@ L13: if(NEWLOC <= 100) goto L14;
L14: if(NEWLOC != 0 && !PCT(NEWLOC)) goto L12;
L16: NEWLOC=MOD(LL,1000);
if(NEWLOC <= 300) goto L2;
if(NEWLOC <= 300) return;
if(NEWLOC <= 500) goto L30000;
RSPEAK(NEWLOC-500);
NEWLOC=LOC;
goto L2;
return;
/* Special motions come here. Labelling convention: statement numbers NNNXX
* (XX=00-99) are used for special case number NNN (NNN=301-500). */
@ -527,10 +536,10 @@ L30000: NEWLOC=NEWLOC-300;
* be used for actual motion, but can be spotted by "go back". */
L30100: NEWLOC=99+100-LOC;
if(HOLDNG == 0 || (HOLDNG == 1 && TOTING(EMRALD))) goto L2;
if(HOLDNG == 0 || (HOLDNG == 1 && TOTING(EMRALD))) return;
NEWLOC=LOC;
RSPEAK(117);
goto L2;
return;
/* Travel 302. Plover transport. Drop the emerald (only use special travel if
* toting it), so he's forced to use the plover-passage to get it out. Having
@ -554,11 +563,11 @@ L30300: if(PROP[TROLL] != 1) goto L30310;
MOVE(TROLL+100,FIXD[TROLL]);
JUGGLE(CHASM);
NEWLOC=LOC;
goto L2;
return;
L30310: NEWLOC=PLAC[TROLL]+FIXD[TROLL]-LOC;
if(PROP[TROLL] == 0)PROP[TROLL]=1;
if(!TOTING(BEAR)) goto L2;
if(!TOTING(BEAR)) return;
RSPEAK(162);
PROP[CHASM]=1;
PROP[TROLL]=2;
@ -582,7 +591,7 @@ L20: K=OLDLOC;
if(CNDBIT(LOC,4))K2=274;
if(K2 == 0) goto L21;
RSPEAK(K2);
goto L2;
return;
L21: LL=MOD((IABS(TRAVEL[KK])/1000),1000);
if(LL == K) goto L25;
@ -596,7 +605,7 @@ L22: if(TRAVEL[KK] < 0) goto L23;
L23: KK=K2;
if(KK != 0) goto L25;
RSPEAK(140);
goto L2;
return;
L25: K=MOD(IABS(TRAVEL[KK]),1000);
KK=KEY[LOC];
@ -609,14 +618,14 @@ L30: if(DETAIL < 3)RSPEAK(15);
DETAIL=DETAIL+1;
WZDARK=false;
ABB[LOC]=0;
goto L2;
return;
/* Cave. Different messages depending on whether above ground. */
L40: K=58;
if(OUTSID(LOC) && LOC != 8)K=57;
RSPEAK(K);
goto L2;
return;
/* Non-applicable motion. Various messages depending on word given. */
@ -629,7 +638,7 @@ L50: SPK=12;
if(K == 62 || K == 65)SPK=42;
if(K == 17)SPK=80;
RSPEAK(SPK);
goto L2;
return;
@ -847,7 +856,7 @@ L11000: PROP[BOTTLE]=PUT(BOTTLE,115,1);
RSPEAK(132);
CLOSED=true;
goto L2;
return;
/* Another way we can force an end to things is by having the lamp give out.
* When it gets close, we come here to warn him. We go to 12000 if the lamp