on the TI series calculators

1. Game Programming on the TI series calculators By Chris Williams & William Lord

2. Two languages available • Assembly • Basic

3. Assembly • allows sound • allows high level graphics • compiled language • typically large • large degree of flexibility

4. Basic • primarily text-base • easy to read and write • interpretive language • typically small size • similar to PC basic • limited functionality

5. Output • Three forms: • Disp - standard output • Outpt( - defined location • Text( - in graph window

6. This screen demonstrates the disp output function. Code: 1.) Program:hello :ClLCD :Disp " HELLO WORLD","---------" Program:hello :ClLCD :OutPt(7,0 "HELLO WORLD" :OutPt(0,10 "---------" Program:hello :ClGRW :Text(7,0 "HELLO WORLD" :Text(0,10 "---------" :Pause

7. Input • for integers • Input “prompt” , variable • for text • InpSt “prompt” , variable • Each key has it’s own address • the program can wait for a specific keystroke.

8. This screen demonstrates the input function. Code: 2.) Program:Pokemon :Input "*Selection: ", Var1 Program:Pokemon :InpSt "*Name: ", Name1 getKy->K If K==105:Then Disp "You pressed Enter." End

9. Variables • Defined during assignment • integers • “number”  variable • strings • “String”  Variable

10. This screen demonstrates the variable declaration. 3.)

11. Function keys • Assigned with menu command • each key has it’s own address • usage • menu( 1, “title”, goto, ...

12. This screen demonstrates the function keys. Code: 4.) Program:PRS :Lbl Top :ClLCD :Disp "Paper Rock or Scissors" :Menu(1,"Pap",ramp,3,"Roc” ,ramr,5,"Sci",rams

13. Gotos • Program is segmented by labels • Lbl LABEL • gotos transfer control to a label • Goto LABEL

14. This screen demonstrates Goto statements. 5.)

15. Merry Christmas