source: trunk/ncurses/Ada95/samples/rain.adb@ 2824

Last change on this file since 2824 was 2621, checked in by bird, 20 years ago

GNU ncurses 5.5
File size: 5.6 KB
Line 
1------------------------------------------------------------------------------
2-- --
3-- GNAT ncurses Binding Samples --
4-- --
5-- Rain --
6-- --
7-- B O D Y --
8-- --
9------------------------------------------------------------------------------
10-- Copyright (c) 1998 Free Software Foundation, Inc. --
11-- --
12-- Permission is hereby granted, free of charge, to any person obtaining a --
13-- copy of this software and associated documentation files (the --
14-- "Software"), to deal in the Software without restriction, including --
15-- without limitation the rights to use, copy, modify, merge, publish, --
16-- distribute, distribute with modifications, sublicense, and/or sell --
17-- copies of the Software, and to permit persons to whom the Software is --
18-- furnished to do so, subject to the following conditions: --
19-- --
20-- The above copyright notice and this permission notice shall be included --
21-- in all copies or substantial portions of the Software. --
22-- --
23-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
24-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
25-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
26-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
27-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
28-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
29-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
30-- --
31-- Except as contained in this notice, the name(s) of the above copyright --
32-- holders shall not be used in advertising or otherwise to promote the --
33-- sale, use or other dealings in this Software without prior written --
34-- authorization. --
35------------------------------------------------------------------------------
36-- Author: Laurent Pautet <pautet@gnat.com>
37-- Modified by: Juergen Pfeifer, 1997
38-- Version Control
39-- $Revision: 1.6 $
40-- Binding Version 01.00
41------------------------------------------------------------------------------
42-- --
43with Ada.Numerics.Float_Random; use Ada.Numerics.Float_Random;
44with Status; use Status;
45with Terminal_Interface.Curses; use Terminal_Interface.Curses;
46
47procedure Rain is
48
49 Visibility : Cursor_Visibility;
50
51 subtype X_Position is Line_Position;
52 subtype Y_Position is Column_Position;
53
54 Xpos : array (1 .. 5) of X_Position;
55 Ypos : array (1 .. 5) of Y_Position;
56
57 N : Integer;
58
59 G : Generator;
60
61 Max_X, X : X_Position;
62 Max_Y, Y : Y_Position;
63
64 procedure Next (J : in out Integer);
65 procedure Cursor (X : X_Position; Y : Y_Position);
66
67 procedure Next (J : in out Integer) is
68 begin
69 if J = 5 then
70 J := 1;
71 else
72 J := J + 1;
73 end if;
74 end Next;
75
76 procedure Cursor (X : X_Position; Y : Y_Position) is
77 begin
78 Move_Cursor (Line => X, Column => Y);
79 end Cursor;
80 pragma Inline (Cursor);
81
82begin
83
84 Init_Screen;
85 Set_NL_Mode;
86 Set_Echo_Mode (False);
87
88 Visibility := Invisible;
89 Set_Cursor_Visibility (Visibility);
90
91 Max_X := Lines - 5;
92 Max_Y := Columns - 5;
93
94 for I in Xpos'Range loop
95 Xpos (I) := X_Position (Float (Max_X) * Random (G)) + 2;
96 Ypos (I) := Y_Position (Float (Max_Y) * Random (G)) + 2;
97 end loop;
98
99 N := 1;
100 while Process.Continue loop
101
102 X := X_Position (Float (Max_X) * Random (G)) + 2;
103 Y := Y_Position (Float (Max_Y) * Random (G)) + 2;
104
105 Cursor (X, Y);
106 Add (Ch => '.');
107
108 Cursor (Xpos (N), Ypos (N));
109 Add (Ch => 'o');
110
111 --
112 Next (N);
113 Cursor (Xpos (N), Ypos (N));
114 Add (Ch => 'O');
115
116 --
117 Next (N);
118 Cursor (Xpos (N) - 1, Ypos (N));
119 Add (Ch => '-');
120 Cursor (Xpos (N), Ypos (N) - 1);
121 Add (Str => "|.|");
122 Cursor (Xpos (N) + 1, Ypos (N));
123 Add (Ch => '-');
124
125 --
126 Next (N);
127 Cursor (Xpos (N) - 2, Ypos (N));
128 Add (Ch => '-');
129 Cursor (Xpos (N) - 1, Ypos (N) - 1);
130 Add (Str => "/\\");
131 Cursor (Xpos (N), Ypos (N) - 2);
132 Add (Str => "| O |");
133 Cursor (Xpos (N) + 1, Ypos (N) - 1);
134 Add (Str => "\\/");
135 Cursor (Xpos (N) + 2, Ypos (N));
136 Add (Ch => '-');
137
138 --
139 Next (N);
140 Cursor (Xpos (N) - 2, Ypos (N));
141 Add (Ch => ' ');
142 Cursor (Xpos (N) - 1, Ypos (N) - 1);
143 Add (Str => " ");
144 Cursor (Xpos (N), Ypos (N) - 2);
145 Add (Str => " ");
146 Cursor (Xpos (N) + 1, Ypos (N) - 1);
147 Add (Str => " ");
148 Cursor (Xpos (N) + 2, Ypos (N));
149 Add (Ch => ' ');
150
151 Xpos (N) := X;
152 Ypos (N) := Y;
153
154 Refresh;
155 Nap_Milli_Seconds (50);
156 end loop;
157
158 Visibility := Normal;
159 Set_Cursor_Visibility (Visibility);
160 End_Windows;
161
162end Rain;
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