Acorn Computers BBC Micro Model B w/8271 — Acorn BBC Micro Model B w/8271 User Guide Manual PDF

148 How to make a larger character This time, a space ship. Plan this by using several grids. So we have 5 MODE 4 10 VDU 23,240,8,8,28,28,62,62,62,62 20 VDU 23,241,62,62,62,62,62,62,62,62 30 VDU 23,242,62,62,62,127,127,127,93,93 40 X = 20: Y = 10 50 PRINT TAB(X,Y);CHR$240; 60 PRINT TAB(X,Y+1);CHR$241; 70 PRINT TAB(X,Y+2);CHR$242; This produces the space ship in the middle of the screen. To make it take off, change the program by adding these lines: 7 VDU23,1,0;0;0;0; 35 X=20 40 FOR Y = 24 TO 0 STEP -1 80 FOR T = 1 TO 100:

NEXT T 90 PRINT TAB(X,Y); " "; 100 PRINT TAB(X,Y+1); " "; 110 PRINT TAB(X,Y+2); " "; 120 NEXT Y Now add an extra character to produce flames at the bottom of the space ship for the initial take-off.