COMMON: Implementation of TICKS(n)

AUTHORS

@@ -1,9 +1,8 @@
-Chris Warren-Smith      cwarrensmith@gmail.com	chrisws
-Nicholas Christopoulos	wired_gr@yahoo.com  		ndc
-Gary A. Clark						clarkg@fireserve.net		gac
-Bob Riess								riessb@usa.net					bob
-Earle F. Philhower III	earle@ziplabel.com			efp
-Laurent Poujoulat	 			lpoujoulat@wanadoo.fr		lap
-Mehul Sanghvi           mehul.sanghvi@gmail.com mnsanghvi
-
-
+Chris Warren-Smith      cwarrensmith@gmail.com   chrisws
+Nicholas Christopoulos  wired_gr@yahoo.com       ndc
+Gary A. Clark           clarkg@fireserve.net     gac
+Bob Riess               riessb@usa.net           bob
+Earle F. Philhower III  earle@ziplabel.com       efp
+Laurent Poujoulat       lpoujoulat@wanadoo.fr    lap
+Mehul Sanghvi           mehul.sanghvi@gmail.com  mnsanghvi
+Joerg Siebenmorgen      siebenmorgen@mailbox.org j7m

samples/distro-examples/examples/ticks.bas

@@ -0,0 +1,16 @@
+print "step          | ticks"
+print "--------------|----------"
+
+print "initial ticks | "; ticks()
+delay(100)
+print "delay(100)    | "; ticks()
+
+ticks(0)
+print "ticks(0)      | "; ticks()
+delay(100)
+print "delay(100)    | "; ticks()
+
+ticks(1000)
+print "ticks(1000)   | "; ticks()
+delay(100)
+print "delay(100)    | "; ticks()

samples/distro-examples/tests/all.bas

@@ -29,7 +29,7 @@ print "CHDIR:" ':CHDIR dir
 print "CHMOD:" ':CHMOD file, mode
 print "CIRCLE:" ':CIRCLE [STEP] x,y,r [,aspect [, color]] [COLOR color] [FILLED]
 print "CLOSE:" ':CLOSE #fileN
-print "CLS:" :CLS
+print "CLS:"' :CLS
 print "COLOR:" :COLOR 1,2
 print "COPY:" ':COPY "file", "newfile"
 print "DATEDMY:";: DATEDMY(2459590,jd,jm,jy): print jd;jm;jy
@@ -230,7 +230,7 @@ print "TAN:" + TAN (x)
 print "TANH:" + TANH (x)
 print "TEXTHEIGHT:" + TEXTHEIGHT (s)
 print "TEXTWIDTH:" + TEXTWIDTH (s)
-print "TICKS:"' + TICKS
+print "TICKS:": TICKS(0): if(TICKS()) then throw "Ticks failed"
 print "TIME:"' + TIME
 print "TIMER:"' + TIMER
 print "TIMESTAMP:" '+ TIMESTAMP filename

src/common/blib.c

@@ -16,6 +16,9 @@
 #define STR_INIT_SIZE 256
 #define PKG_INIT_SIZE 5
 
+// ticks(n)
+extern var_int_t tickOffset;
+
 /**
  * LET v[(x)] = any
  * CONST v[(x)] = any
@@ -2374,6 +2377,20 @@ void cmd_environ() {
   v_free(&str);
 }
 
+/**
+ * TICKS int
+ */
+void cmd_ticks(void) {
+  var_int_t offset;
+
+  offset = par_getint();
+  if (prog_error) {
+    return;
+  }
+
+  tickOffset = dev_get_millisecond_count() - offset;
+}
+
 /**
  * DATEDMY string|julian, m, d, y
  */

src/common/blib.h

@@ -89,6 +89,7 @@ void cmd_datedmy(void);
 void cmd_timehms(void);
 void cmd_deriv(void);
 void cmd_diffeq(void);
+void cmd_ticks(void);
 
 // not basic, but speed is needed
 void graph_reset(void);

src/common/blib_func.c

@@ -30,6 +30,9 @@ static char *date_wdN_table[] = TABLE_WEEKDAYS_FULL;
 static char *date_m3_table[] = TABLE_MONTH_3C;
 static char *date_mN_table[] = TABLE_MONTH_FULL;
 
+// ticks()
+var_int_t tickOffset = 0;
+
 #define BUF_LEN 64
 #define BIN_LEN 32  // Number of max bits (digits) kwBIN creates
 
@@ -752,7 +755,7 @@ var_int_t cmd_imath0(long funcCode) {
     //
     // int <- TICKS // clock()
     //
-    r = dev_get_millisecond_count();
+    r = dev_get_millisecond_count() - tickOffset;
     break;
   case kwPROGLINE:
     //

src/common/brun.c

@@ -495,6 +495,9 @@ static inline void bc_loop_call_proc() {
   case kwAT:
     cmd_at();
     break;
+  case kwTICKSP:
+    cmd_ticks();
+    break;
   case kwPEN:
     cmd_pen();
     break;

src/common/kw.h

@@ -246,7 +246,8 @@ enum proc_keywords {
   kwDEFINEKEY,
   kwSHOWPAGE,
   kwTHROW,
-  kwNULLPROC
+  kwNULLPROC,
+  kwTICKSP
 };
 
 /**

src/languages/keywords.en.c

@@ -413,7 +413,8 @@ struct proc_keyword_s proc_table[] = {
 { "CALL",               kwCALLCP },
 { "DEFINEKEY",          kwDEFINEKEY },
 { "SHOWPAGE",           kwSHOWPAGE },
-{ "TIMER",              kwTIMER }, 
+{ "TIMER",              kwTIMER },
+{ "TICKS",              kwTICKSP },
 
 #if !defined(OS_LIMITED)
 { "STKDUMP",    kwSTKDUMP },