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Diffstat (limited to 'ipl/progs/missile.icn')
| -rw-r--r-- | ipl/progs/missile.icn | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/ipl/progs/missile.icn b/ipl/progs/missile.icn new file mode 100644 index 0000000..4b4fdaa --- /dev/null +++ b/ipl/progs/missile.icn @@ -0,0 +1,331 @@ +############################################################################ +# +# File: missile.icn +# +# Subject: Program to play missile command game +# +# Author: Chris Tenaglia +# +# Date: June 14, 1994 +# +############################################################################ +# +# This file is in the public domain. +# +############################################################################ +# +# Here is a cheap attempt at a Missile Command game. +# +# I've run it under Icon V8.7 under VMS, Unix, and V8.5 under MS-DOS. +# +# Here are some things you'll need to know. There is a delay() procedure +# that keeps the game running at a steady pace. delay() is built into +# V8.7 on VMS and unix. Under DOS you'll need to roll your own. +# The program also uses ansi escape sequences. Also to play use 7, 8, and 9 +# to launch a # missile. 7 is leftward, 8 is straight, and 9 is right. A bug +# in the Ultrix version (kbhit() and getch()) requires double pressing the +# buttons. I think q will quit the game early. +# +# Have Fun! +# +############################################################################ +# +# Links: random +# +############################################################################ + +link random + +global bonus, # bonus missile threshhold + score, # number of missiles shot down + munitions, # munitions supply (# of defensive missiles) + missilef, # whether enemy missile is launched flag + missilex, # x position of enemy missile + missiley, # y position of enemy missile + incm, # x increment of enemy missile + abmf, # whether defensive missile fired flag + abmx, # x position of defensive missile + abmy, # y position of defensive missile + abmix # x increment of defensive missle + +procedure main() + infrastructure() # set up defaults, globals, and munitions + banner() # output initial banner + repeat + { + draw_base() # initially draw base + repeat + { + enemy_launch() # possible enemy attack + friendly_fire() # possible defensive attack + animate() # draw action if any + sense_status() # sense status + delay(1000) # pace the game + } + } + stop("\7\e[0m",at(12,24),"Game Over. \e[5mInsert another quarter.\e[0m\e[?25h\e=") + end + +# +# set up all the initial defaults +# +procedure infrastructure() + bonus := 22 + missilef := 0 + missilex := 0 + missiley := 0 + incm := 0 + abmf := 0 + abmx := 0 + abmy := 0 + score := 0 + randomize() + munitions:= 10 + ?5 + end + +# +# draw the initial environment +# +procedure draw_base() + write("\e[?25l\e>\e[?5l\e[0;1;33;44m\e[2J\e[H S.D.I. OUTPOST [TACTICAL SITUATION DISPLAY]") + writes(at(23,1),repl("#",79)) + writes(at(24,1),repl("=",79)) + writes(at(24,39),"/ \\",at(23,40),"^") + writes(at(24,5)," Missiles Left : ",munitions," ") + writes(at(24,60)," Score : ",score," ") + end + +# +# check and occasionally launch a missile +# +procedure enemy_launch() + (?50 = 33) | fail + if missilef = 1 then fail + missilex := 1 + missiley := 1 + ?10 + missilef := 1 + incm := ?3 + end + +# +# coordinate launch of defensive missiles +# +procedure friendly_fire() + local ambf, press + + kbhit() | fail + press := getch() + if abmf = 1 then + { + case press of + { + "1" | "4" | "7" | "l" | "L" : abmix := -2 + "2" | "5" | "8" | "s" | "S" : abmix := 0 + "3" | "6" | "9" | "r" | "R" : abmix := 2 + "q" | "Q" | "\e" : stop("\e[2J\e[H") + default : writes("\7") + } + } else { + ambf := 1 + abmx := 40 + abmy := 22 + case press of + { + "1" | "4" | "7" | "l" | "L" : abmix := -2 + "2" | "5" | "8" | "s" | "S" : abmix := 0 + "3" | "6" | "9" | "r" | "R" : abmix := 2 + "q" | "Q" | "\e": stop("\e[2J\e[H",at(12,24),"Game Over. \e[5mInsert another quarter.\e[0m\e[?25h\e=") + default : { + writes("\7") + fail + } + } + if munitions <= 0 then + stop(at(12,24),"Game Over. \e[5mInsert Another Quarter!\e[0m\e=\e[?25h") + munitions -:= 1 + abmf := 1 + writes(at(24,5)," Missiles Left : ",munitions," ") + } + end + +# +# fly the missiles +# +procedure animate() + local old_missilez + + static old_abmx, + old_abmy, + old_missilex, + old_missiley + + initial { + old_abmx := 0 + old_abmy := 0 + old_missilez := 0 + old_missiley := 0 + } + + # + # move the defensive missile if launched + # + if abmf = 1 then + { + writes(at(abmy,abmx),"*",at(old_abmy,old_abmx)," ") + old_abmx := abmx + old_abmy := abmy + abmx +:= abmix + abmy -:= 1 + if abmy < 2 then + { + writes(at(old_abmy,old_abmx)," ") + abmf := 0 + abmx := 0 + abmy := 0 + } + } + + # + # move the offensive missile if launched + # + if missilef = 1 then + { + writes(at(missiley,missilex)," =>") + missilex +:= incm + if missilex > 76 then + { + writes(at(missiley,76),"\e[K") + missilef := 0 + missilex := 0 + missiley := 0 + incm := 0 + } + } + end + +# +# sense for hits and handle explosions +# +procedure sense_status() + local j + static junk + initial junk := ["=%!*@", + "%^&(!", + "(@^$^", + "*)@%$", + "@&%^(#"] + if missilef=1 & abmf=1 then + { + if abmy=missiley & (missilex < abmx < missilex+6) then + { + every 1 to 3 do + { + writes(at(abmy,abmx-4),"\e[?5h<<<<>>>>") ; delay(2000) # reverse screen + writes(at(abmy,abmx-4),"\e[?5l>>>><<<<") ; delay(2000) # normal screen + } + every j := abmy to 22 do + { + writes(at(j,abmx-3),?junk) + delay(1000) + } + if abmx > 67 then abmx := 67 # handle edge of screen problem + writes(at(23,abmx-3),"********") ; delay(1000) + writes(at(22,abmx-3),"\e[?5h||||||||") ; delay(1000) + writes(at(21,abmx-5),"\e[?5l. . . . . . .") ; delay(1000) + every j := 20 to abmy by -1 do writes(at(j,abmx-6),"\e[K") + wait(2) + score +:= incm * (15 - missiley) + if score > bonus then + { + writes(at(12,30),"\7\e[5mBONUS MISSILE EARNED!\e[0m") + bonus +:= 33 + munitions +:= 1 + delay(30000) + } + draw_base() + abmf := 0 + abmx := 0 + abmy := 0 + missilef := 0 + missilex := 0 + missiley := 0 + } + } + end + +# +# output initial banner for this game +# +procedure banner() + write("\e[0;1;33;44m\e[2J\e[H ") + write(" ") + write("###############################################################################") + write(" ") + write(" *** * * ***** **** *** **** ***** ") + write(" * * * * * * * * * * * ") + write(" * * * * * **** * * *** * ") + write(" * * * * * * * * * * ") + write(" *** *** * * *** **** * ") + write(" ") + write(" **** **** *** ") + write(" * * * * ") + write(" **** * * * ") + write(" * * * * ") + write(" **** ** **** ** *** ** ") + write(" ") + write(" ") + write("###############################################################################") + wait(3) + end + +# +# move cursor to specified screen position +# +procedure at(row,column) + return "\e[" || row || ";" || column || "f" + end + +# +# procedure to wait n seconds +# +procedure wait(n) + delay(n * 10000) + return +## secs := &clock[-2:0] + n +## if secs > 58 then secs -:= 60 +## repeat +## { +## now := &clock[-2:0] +## if now > secs then break +## } +## return + end + +############################################################################ +# # +# This procedure pulls all the elements (tokens) out of a line # +# buffer and returns them in a list. a variable named 'chars' # +# can be statically defined here or global. It is a cset that # +# contains the valid characters that can compose the elements # +# one wishes to extract. # +# # +############################################################################ +procedure parse(line,delims) + local tokens + static chars + chars := &cset -- delims + tokens := [] + line ? while tab(upto(chars)) do put(tokens,tab(many(chars))) + return tokens + end + +############################################################################ +# # +# This procedure is terribly handy in prompting and getting # +# an input string # +# # +############################################################################ +procedure input(prompt) + writes(prompt) + return read() + end |