aboutsummaryrefslogtreecommitdiff
path: root/engines/zvision/lever_control.h
blob: 8ef8f06feceb4ea919948dc25933e7144c5b73f2 (plain)
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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
/* 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#ifndef ZVISION_LEVER_CONTROL_H
#define ZVISION_LEVER_CONTROL_H

#include "zvision/control.h"

#include "common/list.h"
#include "common/rect.h"


namespace ZVision {

class ZorkAVIDecoder;
class RlfAnimation;

class LeverControl : public Control {
public:
	LeverControl(ZVision *engine, uint32 key, Common::SeekableReadStream &stream);
	~LeverControl();

private:
	enum FileType {
		RLF = 1,
		AVI = 2
	};

	struct Direction {
		Direction(uint a, uint t) : angle(a), toFrame(t) {}

		uint angle;
		uint toFrame;
	};

	struct FrameInfo {
		Common::Rect hotspot;
		Common::List<Direction> directions;
		Common::List<uint> returnRoute;
	};

	enum {
		ANGLE_DELTA = 30, // How far off a mouse angle can be and still be considered valid. This is in both directions, so the total buffer zone is (2 * ANGLE_DELTA)
		ANIMATION_FRAME_TIME = 30 // In millis
	};

private:
	union {
		RlfAnimation *rlf;
		ZorkAVIDecoder *avi;
	} _animation;
	FileType _fileType;

	Common::String _cursorName;
	Common::Rect _animationCoords;
	bool _mirrored;
	uint _frameCount;
	uint _startFrame;
	Common::Point _hotspotDelta;
	FrameInfo *_frameInfo;

	uint _currentFrame;
	uint _lastRenderedFrame;
	bool _mouseIsCaptured;
	bool _isReturning;
	Common::Point _lastMousePos;
	Common::List<uint>::iterator _returnRoutesCurrentProgress;
	uint _returnRoutesCurrentFrame;
	uint32 _accumulatedTime;

public:
	void onMouseDown(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos);
	void onMouseUp(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos);
	bool onMouseMove(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos);
	bool process(uint32 deltaTimeInMillis);

private:
	void parseLevFile(const Common::String &fileName);
	/**
	 * Calculates the angle a vector makes with the negative y-axis
	 *
	 *                 90
	 *  pointTwo *     ^
	 *            \    |
	 *             \   |
	 *              \  |
	 *               \ |
	 *        angle ( \|pointOne
	 * 180 <-----------*-----------> 0
	 *                 |
	 *                 |
	 *                 |
	 *                 |
	 *                 |
	 *                 ^
	 *                270
	 *
	 * @param pointOne    The origin of the vector
	 * @param pointTwo    The end of the vector
	 * @return            The angle the vector makes with the negative y-axis
	 */
	static int calculateVectorAngle(const Common::Point &pointOne, const Common::Point &pointTwo);
	void renderFrame(uint frameNumber);
};

} // End of namespace ZVision

#endif