4 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License
8 // as published by the Free Software Foundation; either version 2
9 // of the License, or (at your option) any later version.
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.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include "shrinkfade.hpp"
23 #include "video/drawing_context.hpp"
25 ShrinkFade::ShrinkFade(const Vector& dest, float fade_time)
26 : dest(dest), fade_time(fade_time), accum_time(0)
28 speedleft = dest.x / fade_time;
29 speedright = (SCREEN_WIDTH - dest.x) / fade_time;
30 speedtop = dest.y / fade_time;
31 speedbottom = (SCREEN_HEIGHT - dest.y) / fade_time;
34 ShrinkFade::~ShrinkFade()
39 ShrinkFade::update(float elapsed_time)
41 accum_time += elapsed_time;
42 if(accum_time > fade_time)
43 accum_time = fade_time;
47 ShrinkFade::draw(DrawingContext& context)
50 float left = speedleft * accum_time;
51 float top = speedtop * accum_time;
52 float right = SCREEN_WIDTH - speedright * accum_time;
53 float bottom = SCREEN_HEIGHT - speedbottom * accum_time;
55 context.draw_filled_rect(Vector(0, 0),
56 Vector(left, SCREEN_HEIGHT),
58 context.draw_filled_rect(Vector(0, 0),
59 Vector(SCREEN_WIDTH, top),
61 context.draw_filled_rect(Vector(right, 0),
62 Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
64 context.draw_filled_rect(Vector(0, bottom),
65 Vector(SCREEN_WIDTH, SCREEN_HEIGHT),
72 return accum_time >= fade_time;