Root/source/bsquare.ccp

Source at commit 12bfb32 created 13 years 10 months ago.
By Bas Wijnen, make things work with unfinished new startup procedure
1#pypp 0
2// Iris: micro-kernel for a capability-based operating system.
3// source/bsquare.ccp: Floating square demo.
4// Copyright 2009 Bas Wijnen <wijnen@debian.org>
5//
6// This program is free software: you can redistribute it and/or modify
7// it under the terms of the GNU General Public License as published by
8// the Free Software Foundation, either version 3 of the License, or
9// (at your option) any later version.
10//
11// This program is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15//
16// You should have received a copy of the GNU General Public License
17// along with this program. If not, see <http://www.gnu.org/licenses/>.
18
19#include <iris.hh>
20#include <devices.hh>
21
22static unsigned *framebuffer
23static int const r = 10
24static int colour
25
26void square (int x, int y, bool print):
27    for int ty = y - r; ty < y + r; ++ty:
28        if ty < 0 || ty >= 240:
29            continue
30        for int tx = x - r; tx < x + r; ++tx:
31            if tx < 0 || tx >= 320:
32                continue
33            framebuffer[ty * 320 + tx] = (print ? colour : 0)
34
35Iris::Num start ():
36    Iris::my_parent.init_done ()
37    colour = 0xffff00
38    framebuffer = (unsigned *)0x15000
39    Iris::Display display = Iris::my_parent.get_device <Iris::Display> (0x10001)
40    int x = r, y = r, dx = 3, dy = 3
41    Iris::Cap eof = Iris::my_receiver.create_capability (0)
42    while true:
43        display.set_eof_cb (eof)
44        Iris::wait ()
45        square (x, y, false)
46        x += dx
47        y += dy
48        if y + r >= 240:
49            dy = -dy
50            y = 240 - r
51        if x - r < 0:
52            x = r
53            dx = -dx
54        if x + r >= 320:
55            x = 320 - r
56            dx = -dx
57        if y - r < 0:
58            y = r
59            dy = -dy
60        square (x, y, true)
61

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