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78 lines
2.6 KiB
Lua
78 lines
2.6 KiB
Lua
%import c64utils
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%import mathlib
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; The classic number guessing game.
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; This version uses mostly high level subroutine calls and loops.
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; It's more readable than the low-level version, but produces a slightly larger program.
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~ main {
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sub start() {
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str name = "????????????????????????????????????????"
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str input = "??????????"
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ubyte secretnumber = rnd() % 99 + 1 ; random number 1..100
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c64.VMCSB |= 2 ; switch lowercase chars
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c64scr.print_string("Please introduce yourself: ")
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c64scr.input_chars(name)
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c64scr.print_string("\n\nHello, ")
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c64scr.print_string(name)
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c64scr.print_string(".\nLet's play a number guessing game.\nI am thinking of a number from 1 to 100!You'll have to guess it!\n")
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for ubyte attempts_left in 10 to 1 step -1 {
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; stackptr debugging
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; c64scr.print_byte(X)
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; c64.CHROUT('\n')
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c64scr.print_string("\nYou have ")
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c64scr.print_ubyte(attempts_left)
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c64scr.print_string(" guess")
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if attempts_left>1
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c64scr.print_string("es")
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c64scr.print_string(" left.\nWhat is your next guess? ")
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c64scr.input_chars(input)
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ubyte guess = str2ubyte(input)
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; debug info
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; c64scr.print_string(" > attempts left=")
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; c64scr.print_byte(attempts_left)
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; c64scr.print_string("\n > secretnumber=")
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; c64scr.print_byte(secretnumber)
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; c64scr.print_string("\n > input=")
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; c64scr.print_string(input)
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; c64scr.print_string("\n > guess=")
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; c64scr.print_byte(guess)
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; c64.CHROUT('\n')
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; c64scr.print_byte(X) ; stackptr debugging
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; c64.CHROUT('\n')
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if guess==secretnumber {
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return ending(true)
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} else {
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c64scr.print_string("\n\nThat is too ")
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if guess<secretnumber
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c64scr.print_string("low!\n")
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else
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c64scr.print_string("high!\n")
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}
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}
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return ending(false)
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sub ending(success: ubyte) {
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if success
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c64scr.print_string("\n\nYou guessed it, impressive!\n")
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else {
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c64scr.print_string("\nToo bad! My number was: ")
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c64scr.print_ubyte(secretnumber)
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c64scr.print_string(".\n")
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}
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c64scr.print_string("Thanks for playing, ")
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c64scr.print_string(name)
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c64scr.print_string(".\n")
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}
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}
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}
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