1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
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
|
