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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 3 of the License, or
* (at your option) 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/>.
*
*/
#ifndef STARK_MOVEMENT_STRING_PULLING_PATH_H
#define STARK_MOVEMENT_STRING_PULLING_PATH_H
#include "common/array.h"
#include "math/vector3d.h"
namespace Stark {
/**
* Store a path and allow to walk along it smoothly
*
* The base principle of the string pulling algorithm is to skip steps
* if it is possible to walk directly to a later step in straight line.
*/
class StringPullingPath {
public:
StringPullingPath();
/** Append a step to the path */
void addStep(const Math::Vector3d &position);
/** Reset the steps, and the current target on the path */
void reset();
/** Move the walk target forward according to the position */
Math::Vector3d computeWalkTarget(const Math::Vector3d &fromPosition);
/** Returns true if this path is not degenerated (empty or single point) */
bool hasSteps() const;
private:
Common::Array<Math::Vector3d> _steps;
uint32 _targetStep;
};
} // End of namespace Stark
#endif // STARK_MOVEMENT_STRING_PULLING_PATH_H
|
