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Diffstat (limited to 'ipl/gprogs/tron.icn')
| -rw-r--r-- | ipl/gprogs/tron.icn | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/ipl/gprogs/tron.icn b/ipl/gprogs/tron.icn new file mode 100644 index 0000000..7fefc04 --- /dev/null +++ b/ipl/gprogs/tron.icn @@ -0,0 +1,191 @@ +############################################################################ +# +# File: tron.icn +# +# Subject: Program to play a Tron-like video game +# +# Author: Eduardo Ochs <eduardoochs@gmail.com> +# +# Date: November 18, 2009 +# +############################################################################ +# +# This file is in the public domain. +# +############################################################################ +# +# Rules: You're yellow, and you leave a yellow trail when you walk. +# You never stop until you die. You die when you hit something +# yellow. Use the arrow keys to change your direction. Try to make +# the best score you can before you die. You only live once. +# +# In the beginning it's a black arena with yellow walls and a red +# 3x3 pixel square somewhere. Walking over a red pixel gives you +# one point and makes another 3x3 square appear somewhere. So, +# crossing a 3x3 red square from one side to another gives you +# three points and makes three other squares appear in random +# positions. +# +# Walking over black pixels is harmless. +# +# Sometimes the red squares will appear over your trail. Then some +# pixels of your trail will become red and you'll be able to cross. +# +# The game loop and the outer loop: typing "Q" or Esc or losing when +# you're playing makes you go to the outer loop; in the outer loop +# typing "P" or Enter or space restarts the game, and typing "Q" or +# Esc leaves the program. +# +# Source: <http://angg.twu.net/ICON/tron.icn> +# Htmlized: <http://angg.twu.net/ICON/tron.icn.html> +# Screenshot: <http://angg.twu.net/ICON/tron.icn.png> +# See also: <http://angg.twu.net/elisp/tron.el.html> +# <http://angg.twu.net/elisp/tron.el.png> +# +############################################################################ +# +# Requires: Version 9 graphics +# +############################################################################ +# +# Links: graphics, random +# +############################################################################ + +link graphics +link random + +$include "keysyms.icn" + +global actions, direction +global x, y, dx, dy +global score +global pixels + +procedure prepare_vars() + actions := table() + actions[Key_Down] := ["v", +1] + actions[Key_Up] := ["v", -1] + actions[Key_Right] := ["h", +1] + actions[Key_Left] := ["h", -1] + every actions["q" | "Q" | "\e"] := "quit" + set_direction(["h", +1]) + x := 150 + y := 90 + score := 0 + pixels := table() + every pixels[0 to 199] := table(0) +end + +procedure set_color(n) + if n == 0 then WAttrib("fg=black") + if n == 1 then WAttrib("fg=red") + if n == 3 then WAttrib("fg=yellow") +end + +procedure pset(x, y, color) + set_color(color) + pixels[y][x] := color + FillRectangle(x*2, y*2, 2, 2) +end + +procedure point(x, y) + return pixels[y][x] +end + +procedure draw_red_square() + local x, y + x := ?316 + y := ?188 + every pset(x to x+2, y to y+2, 1) +end + +procedure is_direction(action) + return type(action) == "list" +end + +procedure ignored_turn(newdirection) + return newdirection[1] == direction[1] +end + +procedure set_direction(newdirection) + direction := newdirection + if direction[1] == "h" then { + dx := direction[2]; dy := 0 + } else { + dy := direction[2]; dx := 0 + } +end + +procedure process_events() + local e, action + while *Pending() > 0 do { + e := Event() + # w(e) + action := actions[e] + if is_direction(action) then { + if not ignored_turn(action) then { + set_direction(action) + return + } + } + if action === "quit" then + fail + } + return +end + +procedure prepare_walls() + every pset(0 to 319, 0, 3) + every pset(0 to 319, 191, 3) + every pset(0, 0 to 191, 3) + every pset(319, 0 to 191, 3) +end + +procedure draw_score() + GotoXY(6, 396) + set_color(3) + WWrites("Score: " || score) +end + +procedure play() + prepare_vars() + set_color(0) + FillRectangle(0, 0, 640, 400) + prepare_walls() + pset(x, y, 3) + draw_red_square() + draw_score() + + WDelay(1000) + + while process_events() do { + x +:= dx + y +:= dy + if point(x, y) == 3 then break + if point(x, y) == 1 then { + draw_red_square(); score +:= 1; draw_score() + pset(x, y, 3) + WDelay(50) + } + pset(x, y, 3) + WDelay(50) + } +end + +procedure main(args) + local e + + # w(actions) + WOpen("size=640,400", "fg=yellow", "bg=black") + WAttrib("font=Helvetica,12,bold") + + randomize() + while 1 do { + play() + while e := Event() do { + if e === ("q" | "Q" | "\e") then return + if e === ("p" | "P" | " " | "\r" | "\n") then break + } + } +end |