blob: cd16ddf63736d7c8f80fd2afea719bce56edcb0d (
plain) (
blame)
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
|
/*
* The ManaPlus Client
* Copyright (C) 2006-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "rotationalparticle.h"
#include "graphics.h"
#include "simpleanimation.h"
#include "debug.h"
#define PI 3.14159265
RotationalParticle::RotationalParticle(Map *map, Animation *animation):
ImageParticle(map, NULL),
mAnimation(new SimpleAnimation(animation))
{
}
RotationalParticle::RotationalParticle(Map *map, xmlNodePtr animationNode,
const std::string& dyePalettes):
ImageParticle(map, 0),
mAnimation(new SimpleAnimation(animationNode, dyePalettes))
{
}
RotationalParticle::~RotationalParticle()
{
delete mAnimation;
mAnimation = 0;
mImage = 0;
}
bool RotationalParticle::update()
{
if (!mAnimation)
return false;
// TODO: cache velocities to avoid spamming atan2()
float rad = static_cast<float>(atan2(mVelocity.x, mVelocity.y));
if (rad < 0)
rad = static_cast<float>(PI + (PI + rad));
int size = mAnimation->getLength();
float range = static_cast<float>(PI / size);
// Determines which frame the particle should play
if (rad < range || rad > ((PI*2) - range))
{
mAnimation->setFrame(0);
}
else
{
for (int c = 1; c < size; c++)
{
if (((static_cast<float>(c) * (2 * range)) - range) < rad
&& rad < ((static_cast<float>(c) * (2 * range)) + range))
{
mAnimation->setFrame(c);
break;
}
}
}
mImage = mAnimation->getCurrentImage();
return Particle::update();
}
|
