|
|
|
This thread is locked; no one can reply to it.
|
| How to reset keystate Allegro5? |
|
Marcin Piwko
Member #15,823
December 2014
|
1)After I run my program, firstly on the screen appears text message: "Try to catch me!" "press Enter to go.." 2)Then user has to press the Enter button if he wants go to Main Menu. Key state-Enter in this case, is stored in variable called keyState. And because of that, there is a problem when user want to see menu.. I programmed that if frame(used to choose option from menu) is located surrounding start game option (it means: menuPosition=0) and user click the enter button, the game is going to start. There is a problem cuz after user pressed the Enter button (point 1) ) keyState stores Enter and I realized that because of that user cant see the Main Menu but he is transformed automaticly to the game. Can anyone tell me how to erase/reset the keyState after user click the enter button in point 1) or is there any other option to see Main Menu after clicking Enter in point 1) ?
1#include<allegro5\allegro5.h>
2#include<allegro5\allegro_native_dialog.h>
3#include<allegro5\allegro_image.h>
4#include<allegro5\allegro_font.h>
5#include<allegro5\allegro_ttf.h>
6#include<allegro5\allegro_primitives.h>
7
8#include<iostream>
9using namespace std;
10
11int main(){
12 int ScreenWidth = 800, ScreenHeight = 600;
13 if (!al_init())
14 {
15 al_show_native_message_box(NULL, "ERROR", NULL, "Could not initialize Allegro 5", NULL, NULL);
16 return -1;
17 }
18
19 al_set_new_display_flags(ALLEGRO_WINDOWED);
20 ALLEGRO_DISPLAY *display = al_create_display(ScreenWidth, ScreenHeight);//creating window with dimensions: 800:600 px
21 al_set_window_position(display, 200, 50);//place from left top positioning the frame of display
22 al_set_window_title(display, "Marcin Piwko RLZ");
23
24 if (!display)//show this message if sth wrong with display
25 {
26 al_show_native_message_box(display, "Sample Title", "Display Settings", "Display window was not created succesfully", NULL, ALLEGRO_MESSAGEBOX_ERROR);
27 return -1;
28 }
29
30 //Fonts init
31 al_init_font_addon();//initialization font addon
32 al_init_ttf_addon();//initialization ttf(true type font) addon
33
34 //INTRO Fonts
35 ALLEGRO_FONT *fontOrbionBlack36 = al_load_font("Orbitron Black.ttf", 36, NULL);
36 ALLEGRO_FONT *fontOrbionBlack18 = al_load_font("Orbitron Black.ttf", 18, NULL);
37
38 const float FPS = 60;
39 const float frameFPS = 15;//1)
40
41 enum Direction{ DOWN, LEFT, RIGHT, UP };
42
43 bool done = false, draw = true, active = false;
44 float x = 10, y = 10;
45 float moveSpeed = 5;
46 int dir = DOWN,
47 sourceX = 32, sourceY = 0;
48
49 al_install_keyboard();
50 al_init_image_addon();
51 al_init_primitives_addon();
52
53 ALLEGRO_COLOR electricBlue = al_map_rgb(44, 117, 255);
54
55 ALLEGRO_BITMAP *player = al_load_bitmap("PlayerImage1.png");
56
57 ALLEGRO_KEYBOARD_STATE keyState;
58
59 ALLEGRO_TIMER *timer = al_create_timer(3.0 / FPS);//velocity of player movement
60 ALLEGRO_TIMER *frameTimer = al_create_timer(0.5 / frameFPS);//2)
61 ALLEGRO_TIMER *introTimer = al_create_timer(4.0 / FPS);
62
63
64 ALLEGRO_EVENT_QUEUE *event_queue = al_create_event_queue();
65 al_register_event_source(event_queue, al_get_timer_event_source(timer));
66 al_register_event_source(event_queue, al_get_timer_event_source(frameTimer));
67 al_register_event_source(event_queue, al_get_timer_event_source(introTimer));
68
69
70 al_register_event_source(event_queue, al_get_display_event_source(display));
71 al_register_event_source(event_queue, al_get_keyboard_event_source());
72
73
74 int menuXStartPosition = ScreenWidth / 2 - 120;
75 int menuYStartPosition = ScreenHeight / 5 + 36;
76 int menuX = menuXStartPosition, menuY = menuYStartPosition;
77 int moveMenuSpeed = 36;
78 bool activeMenu = false;
79
80 enum loopStates{ showFirstMessage, showMenu, showStartGame, showBestScores, showExit, NUM_LOOPSTATES };
81 bool keysLoopStates[] = { false, false, false };
82 enum menuChoosePosiotion{ startGameCh, showBestScoresCh, showExitCh, NUM_MENUCHOOSEPOSITION };
83 int menuPosition = 0;
84 bool drawMenuState = false;
85
86 int loopTransition = 0;
87
88 al_start_timer(timer);
89 al_start_timer(frameTimer);
90 al_start_timer(introTimer);
91
92
93 while (!done)
94 {
95 ALLEGRO_EVENT events;
96 al_wait_for_event(event_queue, &events);
97 al_get_keyboard_state(&keyState);
98 if (events.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
99 {
100 done = true;
101 }
102
103 else if (loopTransition == showFirstMessage)
104 {
105 al_clear_to_color(al_map_rgb(0, 0, 0));
106 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 2, ALLEGRO_ALIGN_CENTRE, "Try to catch me!");
107 al_draw_text(fontOrbionBlack18, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 2 + 36 + 10, ALLEGRO_ALIGN_CENTRE, "press Enter to go..");
108 al_draw_text(fontOrbionBlack18, al_map_rgb(44, 117, 255), 0, ScreenHeight - 18, ALLEGRO_ALIGN_LEFT, "made by Marcin Piwko");
109 al_flip_display();
110 loopTransition = 1;
111 al_wait_for_event(event_queue, &events);
112 }
113 if (events.type == ALLEGRO_EVENT_TIMER)
114 {
115
116 if (loopTransition == showMenu)
117 {
118 if (events.timer.source == introTimer)
119 {
120
121 if (al_key_down(&keyState, ALLEGRO_KEY_ENTER))
122 {
123 activeMenu = true;
124
125 }
126 if (activeMenu == true)
127 {
128
129 drawMenuState = true;
130 if (al_key_down(&keyState, ALLEGRO_KEY_DOWN))
131 {
132 menuY += moveMenuSpeed;
133 menuPosition++;
134 cout << menuPosition << endl;
135
136 }
137 else if (al_key_down(&keyState, ALLEGRO_KEY_UP))
138 {
139 menuY -= moveMenuSpeed;
140 menuPosition--;
141 cout << menuPosition << endl;
142 }
143 else if (al_key_down(&keyState, ALLEGRO_KEY_ENTER))
144 {
145 if (menuPosition == startGameCh)
146 {
147 loopTransition = showStartGame;
148 }
149 if (menuPosition == showExitCh)
150 {
151 done = true;
152 }
153 }
154 //**********************************************
155 else
156 drawMenuState = false;
157 }
158
159
160
161 if (drawMenuState){
162 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 6, ALLEGRO_ALIGN_CENTRE, "Main Menu");
163 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 5 + 36, ALLEGRO_ALIGN_CENTER, "Star game");
164 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 5 + 36 * 2 + 4, ALLEGRO_ALIGN_CENTER, "Best Scores");
165 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 5 + 36 * 3 + 4, ALLEGRO_ALIGN_CENTER, "Exit");
166
167 al_draw_rectangle(menuX, menuY, menuX + 250, menuY + 36, electricBlue, 1.0);
168
169 al_flip_display();
170 al_clear_to_color(al_map_rgb(0, 0, 0));
171 drawMenuState = true;
172 }
173 }
174
175 }
176
177
178
179 if (loopTransition == showStartGame)
180 {
181 if (events.timer.source == timer)
182 {
183 active = true;
184 if (al_key_down(&keyState, ALLEGRO_KEY_DOWN))
185 {
186 y += moveSpeed;
187 dir = DOWN;
188 }
189 else if (al_key_down(&keyState, ALLEGRO_KEY_UP))
190 {
191 y -= moveSpeed;
192 dir = UP;
193 }
194 else if (al_key_down(&keyState, ALLEGRO_KEY_RIGHT))
195 {
196 x += moveSpeed;
197 dir = RIGHT;
198 }
199 else if (al_key_down(&keyState, ALLEGRO_KEY_LEFT))
200 {
201 x -= moveSpeed;
202 dir = LEFT;
203 }
204 //**********************************************
205 else
206 active = false;
207 }
208
209 else if (events.timer.source = frameTimer)//6)
210 {
211 if (active == true)
212 sourceX += al_get_bitmap_width(player) / 3;
213 else
214 sourceX = 32;
215
216 if (sourceX >= al_get_bitmap_width(player))
217 sourceX = 0;
218
219 sourceY = dir;
220 }
221 draw = true;
222
223
224 if (draw){
225 al_draw_bitmap_region(player, sourceX, sourceY * al_get_bitmap_height(player) / 4, 32, 32,
226 x, y, NULL);
227 al_flip_display();
228 al_clear_to_color(al_map_rgb(0, 0, 0));
229 }
230 }
231 }
232 }
233 al_destroy_display(display);
234 al_destroy_timer(timer);
235 al_destroy_bitmap(player);
236 al_destroy_event_queue(event_queue);
237 return 0;
238}
|
|
Trent Gamblin
Member #261
April 2000
 |
Use keyboard events. You've already registered the keyboard event source, so in your loop you can check for key presses with: if (event.type == ALLEGRO_EVENT_KEY_DOWN && event.keyboard.keycode == ALLEGRO_KEY_ENTER) { // react to the event here } al_key_down will return true if the key is currently pressed, which means for 1/2 a second or so (as long as you hold the key down) it will return 'true'. The ALLEGRO_EVENT_KEY_DOWN event will be fired off only once per key press, and ALLEGRO_EVENT_KEY_UP will be fired off once per key release.
|
|
Marcin Piwko
Member #15,823
December 2014
|
I changed my command for yours and now even game doesnt start when i press enter..
1al_flip_display();
2 loopTransition = 1;
3 }
4 if (events.type == ALLEGRO_EVENT_TIMER)
5 {
6
7 if (loopTransition == showMenu)
8 {
9 if (events.timer.source == introTimer)
10 {
11
12 <u>if (events.type == ALLEGRO_EVENT_KEY_DOWN && events.keyboard.keycode == ALLEGRO_KEY_ENTER) </u>
13 {
14 activeMenu = true;
15
16 }
17 if (activeMenu == true)
|
|
Trent Gamblin
Member #261
April 2000
|
if (event.type == ALLEGRO_EVENT_TIMER) { if (event.type == ALLEGRO_EVENT_KEY_DOWN ...) { } } Do you think the second if will ever be true?
|
|
Marcin Piwko
Member #15,823
December 2014
|
Ok i solve my problem this way, and now it works correctly: 1else if (loopTransition == showFirstMessage)
2 {
3 al_clear_to_color(al_map_rgb(0, 0, 0));
4 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 2, ALLEGRO_ALIGN_CENTRE, "Try to catch me!");
5 al_draw_text(fontOrbionBlack18, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 2 + 36 + 10, ALLEGRO_ALIGN_CENTRE, "press Enter to go..");
6 al_draw_text(fontOrbionBlack18, al_map_rgb(44, 117, 255), 0, ScreenHeight - 18, ALLEGRO_ALIGN_LEFT, "made by Marcin Piwko");
7 al_flip_display();
8 if (events.type == ALLEGRO_EVENT_KEY_DOWN && events.keyboard.keycode == ALLEGRO_KEY_ENTER)
9 {
10 loopTransition = 1;
11 al_clear_to_color(al_map_rgb(0, 0, 0));
12 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 6, ALLEGRO_ALIGN_CENTRE, "Main Menu");
13 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 5 + 36, ALLEGRO_ALIGN_CENTER, "Star game");
14 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 5 + 36 * 2 + 4, ALLEGRO_ALIGN_CENTER, "Best Scores");
15 al_draw_text(fontOrbionBlack36, al_map_rgb(44, 117, 255), ScreenWidth / 2, ScreenHeight / 5 + 36 * 3 + 4, ALLEGRO_ALIGN_CENTER, "Exit");
16
17 al_draw_rectangle(menuX, menuY, menuX + 250, menuY + 36, electricBlue, 1.0);
18
19 al_flip_display();
20 al_clear_to_color(al_map_rgb(0, 0, 0));
21 al_rest(1.0);
22 }
23
24 }
25 if (events.type == ALLEGRO_EVENT_TIMER)
26 {
27
28 if (loopTransition == showMenu)
29 {
30 if (events.timer.source == introTimer)
31 {
32
33 drawMenuState = true;
34 if (al_key_down(&keyState, ALLEGRO_KEY_DOWN))
35 {
36 menuY += moveMenuSpeed;
37 menuPosition++;
38 cout << menuPosition << endl;
39
40 }
41 else if (al_key_down(&keyState, ALLEGRO_KEY_UP))
42 {
43 menuY -= moveMenuSpeed;
44 menuPosition--;
45 cout << menuPosition << endl;
46 }
47 else if (al_key_down(&keyState, ALLEGRO_KEY_ENTER))
48 {
49 if (menuPosition == startGameCh)
50 {
51 loopTransition = showStartGame;
52 }
53 if (menuPosition == showExitCh)
54 {
55 done = true;
56 }
57 }
58 //**********************************************
59 else
60 drawMenuState = false;
61 }
|
|
|
