program Texty;
var  
	// Define three variables : position x, position y and time
   x,y,time,i: byte = 0; 

begin
 	// First, fill color ram with white
	ClearScreen(white, screen_col_loc);
	// Set green border and black background (see Appendix B of Vic 20 Programmers reference)
	screen_bg_color:= screen_bg_black + green;
	// infinite loop
	while (true) do
	begin
		// Make sure we wait for 1 raster cycle to complete
		waitforraster(0);
		// Clear screen with character $20 (space)
		ClearScreen(key_space, screen_char_loc);
		// Calculate x,y some sine values (making a circle)
		// if sine[x] then sine[x+64] is equal to cosine  
		x:=sine[time]/24;		
		y:=sine[time+64]/16 + 4;		
		// move "screenmemory" cursor to x,y at screen memory $0400
		moveto(x,y,hi(screen_char_loc));
		
		i:=time/64; // i will now have values between 0 and 3 (since time is between 0 and 255)
		// Print some random string
		case i of
			0:	printstring("I AM FISH",0,40);
			1:	printstring("ARE YOU FISH",0,40);
			2:	printstring("ME AM CAT",0,40);
			3:	printstring("OM NOM NOM",0,40);
		end;
		// Increase the timer
		time:=time+1;
	end;

end.
