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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/* 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 TITANIC_EVENTS_H
#define TITANIC_EVENTS_H
#include "common/scummsys.h"
#include "common/events.h"
#include "common/stack.h"
#include "support/rect.h"
namespace Titanic {
#define GAME_FRAME_RATE 30
#define GAME_FRAME_TIME (1000 / GAME_FRAME_RATE)
#define DOUBLE_CLICK_TIME 100
enum SpecialButtons {
MK_LBUTTON = 1, MK_RBUTTON = 2, MK_SHIFT = 4, MK_CONTROL = 8,
MK_MBUTTON = 0x10
};
class TitanicEngine;
/**
* A base class for windows that can receive event messages
*/
class CEventTarget {
public:
virtual ~CEventTarget() {}
/**
* Called to handle any regular updates the game requires
*/
virtual void onIdle() {}
/**
* Mouse/key event handlers
*/
virtual void mouseMove(const Point &mousePos) {}
virtual void leftButtonDown(const Point &mousePos) {}
virtual void leftButtonUp(const Point &mousePos) {}
virtual void leftButtonDoubleClick(const Point &mousePos) {}
virtual void middleButtonDown(const Point &mousePos) {}
virtual void middleButtonUp(const Point &mousePos) {}
virtual void middleButtonDoubleClick(const Point &mousePos) {}
virtual void rightButtonDown(const Point &mousePos) {}
virtual void rightButtonUp(const Point &mousePos) {}
virtual void mouseWheel(const Point &mousePos, bool wheelUp) {}
virtual void keyDown(Common::KeyState keyState) {}
virtual void keyUp(Common::KeyState keyState) {}
};
/**
* An eent target used for waiting for a mouse or keypress
*/
class CPressTarget : public CEventTarget {
public:
bool _pressed;
public:
CPressTarget() : _pressed(false) {}
virtual ~CPressTarget() {}
virtual void leftButtonDown(const Point &mousePos) { _pressed = true; }
virtual void middleButtonDown(const Point &mousePos) { _pressed = true; }
virtual void rightButtonDown(const Point &mousePos) { _pressed = true; }
virtual void keyDown(Common::KeyState keyState) { _pressed = true; }
};
class Events {
private:
TitanicEngine *_vm;
Common::Stack<CEventTarget *> _eventTargets;
uint32 _frameCounter;
uint32 _priorFrameTime;
Common::Point _mousePos;
uint _specialButtons;
/**
* Check whether it's time to display the next screen frame
*/
bool checkForNextFrameCounter();
/**
* Return the currently active event target
*/
CEventTarget *eventTarget() const {
return _eventTargets.top();
}
/**
* Handles setting/resettings special buttons on key up/down
*/
void handleKbdSpecial(Common::KeyState keyState);
public:
Events(TitanicEngine *vm);
~Events() {}
/**
* Adds a new event target to the top of the list. It will get
* all events generated until such time as another is pushed on
* top of it, or the removeTarget method is called
*/
void addTarget(CEventTarget *target) {
_eventTargets.push(target);
}
/**
* Removes the currently active event target
*/
void removeTarget() {
_eventTargets.pop();
}
/**
* Check for any pending events
*/
void pollEvents();
/**
* Poll for events and introduce a small delay, to allow the system to
* yield to other running programs
*/
void pollEventsAndWait();
/**
* Return the current game frame number
*/
uint32 getFrameCounter() const { return _frameCounter; }
/**
* Get the elapsed playtime
*/
uint32 getTicksCount() const;
/**
* Sleep for a specified period of time
*/
void sleep(uint time);
/**
* Wait for a mouse or keypress
*/
bool waitForPress(uint expiry);
/**
* Get the mouse position
*/
Common::Point getMousePos() const { return _mousePos; }
/**
* Sets the mouse position
*/
void setMousePos(const Common::Point &pt);
/*
* Return whether a given special key is currently pressed
*/
bool isSpecialPressed(SpecialButtons btn) const {
return (_specialButtons & btn) != 0;
}
/**
* Returns the bitset of the currently pressed special buttons
*/
uint getSpecialButtons() const { return _specialButtons; }
};
} // End of namespace Titanic
#endif /* TITANIC_EVENTS_H */
|
