SparrowOSTS_121127.ISO

SparrowOS/Demo/GameStarters/CircleTrace.CPP

@@ -0,0 +1,124 @@
+//Practice tracing circles
+
+AcctRegSetDftEntry("SparrowOS/CircleTrace","F64 best_score=999;\n");
+AcctRegExecuteBranch("SparrowOS/CircleTrace");
+
+I64 cx,cy;
+F64 avg_error=0,elapsed_time=0,total_error=0,score=999;
+
+U0 SongTask(I64)
+{
+  Fs->task_end_cb=&SndTaskEndCB;
+  MusicSettingsRst;
+  while (TRUE)
+    Play("hEDCARCDECR");
+}
+
+U0 DrawIt(CTask *task,CDC *)
+{
+  U8 buf[128];
+  SPrintF(buf,"Error:%6.3f  Time:%6.3f  Score:%6.3f  Best:%8.3f",avg_error,elapsed_time,score,best_score);
+  PlotWinStr(task,buf,BLACK<<4+WHITE,0,0);
+}
+
+#define CIRCLE_RADIUS	100
+#define CIRCUMFERENCE	(2*ã*CIRCLE_RADIUS)
+
+Bool CTPlot(CDC *dc,I64 x,I64 y,I64)
+{
+  F64 rad=Sqrt(Sqr(x-cx)+Sqr(y-cy));
+  GrPlot(dc,x,y);
+  total_error+=Abs(rad-CIRCLE_RADIUS);
+  return TRUE;
+}
+
+U0 CircleTrace()
+{
+  I64 msg_code,p1,p2,x1,y1;
+  F64 rad,t0,total_distance;
+  CDC *dc=DCAlias;
+
+  SettingsPush; //See $LK,"SettingsPush","MN:SettingsPush"$
+  Fs->song_task=Spawn(&SongTask,NULL,"Song",Fs);
+  WordStat;
+
+  cx=Fs->win_pixel_width/2;
+  cy=Fs->win_pixel_height/2;
+
+  Fs->win_inhibit=WIF_ALL-WIF_BORDER;
+  DocCursor;
+  DocClear;
+  Fs->draw_it=&DrawIt;
+
+  DCFill;
+  dc->color=ROP_XOR+BLACK^COLOR_TRANSPARENT;
+  GrCircle(dc,cx,cy,CIRCLE_RADIUS);
+  do {
+    msg_code=GetMsg(&p1,&p2,
+      1<<MSG_KEY_DOWN+1<<MSG_IP_L_DOWN);
+    switch (msg_code) {
+      case MSG_KEY_UP:
+	break;
+      case MSG_IP_L_DOWN:
+	DCFill;
+	dc->color=ROP_XOR+BLACK^COLOR_TRANSPARENT;
+	GrCircle(dc,cx,cy,CIRCLE_RADIUS);
+	dc->color=ROP_XOR+RED^COLOR_TRANSPARENT;
+	t0=tP;
+	total_distance=0.001;
+	total_error=0;
+	x1=p1; y1=p2;
+	do {
+	  msg_code=ScanMsg(&p1,&p2,
+	    1<<MSG_IP_L_UP+1<<MSG_IP_MOVE);
+	  switch (msg_code) {
+	    case MSG_IP_L_UP:
+	      break;
+	    case MSG_IP_MOVE:
+	      if (x1!=p1 || y1!=p2) {
+		total_distance+=Sqrt(Sqr(x1-p1)+Sqr(y1-p2));
+		Line(dc,x1,y1,0,p1,p2,0,&CTPlot);
+		x1=p1;y1=p2;
+		//undo overlapping pixels on segments
+		GrPlot(dc,x1,y1);
+		rad=Sqrt(Sqr(x1-cx)+Sqr(y1-cy));
+		total_error-=Abs(rad-CIRCLE_RADIUS);
+	      }
+	      break;
+	  }
+	  elapsed_time=tP-t0;
+	  avg_error=total_error/total_distance;
+	  score=elapsed_time*avg_error;
+
+	  //This $LK,"Sleep","MN:Sleep"$()s until the next time the
+	  //window mgr task runs.  The
+	  //window mgr calls the UpdateWin() routine
+	  //and places msgs in the que, so there's
+	  //no need to do anything until the window mgr runs.
+	  WinMgrSync;
+
+	} while (msg_code!=MSG_IP_L_UP);
+	music_mute=TRUE; Sleep(200);
+	if (total_distance>0.95*CIRCUMFERENCE) {
+	  if (score<best_score) {
+	    Snd(2000);Sleep(50);Snd(0);Sleep(50);
+	    Snd(2000);Sleep(50);Snd(0);Sleep(50);
+	    Snd(2000);Sleep(50);
+	    best_score=score;
+	  } else {
+	    Snd(500);Sleep(50);
+	  }
+	} else {
+	    Snd(100);Sleep(1000);
+	}
+	Snd(0); Sleep(200); music_mute=FALSE;
+	break;
+    }
+  } while (msg_code!=MSG_KEY_DOWN || p1!=CH_SHIFT_ESC && p1!=CH_ESC);
+  SettingsPop;
+  DCFill;
+  DCDel(dc);
+  AcctRegWriteBranch("SparrowOS/CircleTrace","F64 best_score=%5.4f;\n",best_score);
+}
+
+CircleTrace;  //Execute when #included