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| Haptic on Android - al_install_haptic() returns 0. |
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Ian Lewis
Member #15,817
December 2014
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Hello All, I'm trying to add haptic effects to my Android game. al_install_haptic() always returns zero, and so I can't go any further :-( I have already (successfully) called al_create_display(), and I have added <uses-permission android:name="android.permission.VIBRATE" /> to my manifest. Have I missed anything? Anyone have any ideas what might be causing this? Follow up questions: I know I can check with al_is_display_haptic() & al_is_touch_input_haptic(), but all the touch input functions need a parameter of type ALLEGRO_TOUCH_INPUT, and I can't see where I get that from..... Any clues? Cheers Ian. |
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beoran
Member #12,636
March 2011
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I wrote most of the haptics a few years ago, but it is still somewhat half baked and untested on Android and IOS. This is due to a lack of actual users of the API , so your feedback is appreciated. On mobile platforms, the display should be haptic capable, other inputs are likely not so. It is possible that you have hit a bug. Could you post some example code that exhibits the problem, then I will look into it. |
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Ian Lewis
Member #15,817
December 2014
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Thanks beoran. Here's a stripped-down section of the start of my code which seems to show the problem. 1#include <stdio.h>
2#include <stdlib.h>
3#include <math.h>
4
5#define ALLEGRO_UNSTABLE 1 //needed for haptics.
6
7#include "allegro5/allegro.h"
8#include "allegro5/allegro_image.h"
9#include "allegro5/allegro_primitives.h"
10#include "allegro5/allegro_font.h"
11#include "allegro5/allegro_ttf.h"
12#include "allegro5/allegro_audio.h"
13#include "allegro5/allegro_acodec.h"
14#include <allegro5/allegro_android.h>
15
16
17ALLEGRO_DISPLAY *display;
18ALLEGRO_HAPTIC *hap;
19ALLEGRO_HAPTIC_EFFECT_ID *hapID;
20
21int game(int argc, char **argv )
22{
23 /* Init Allegro 5 + addons. */
24 al_init();
25
26 //init other bits of allegro
27 al_init_image_addon();
28 al_init_primitives_addon();
29 al_init_font_addon();
30 al_init_ttf_addon();
31 al_install_mouse();
32 al_install_keyboard();
33 al_install_audio();
34 al_init_acodec_addon();
35 al_android_set_apk_fs_interface();
36
37 al_set_new_display_option(ALLEGRO_SUPPORTED_ORIENTATIONS,ALLEGRO_DISPLAY_ORIENTATION_LANDSCAPE,ALLEGRO_REQUIRE);
38
39 display = al_create_display(960, 540); //Moto E resolution
40
41 ALLEGRO_TOUCH_INPUT *touch;
42 int temp = al_install_haptic(); //returns 0
43 if (al_is_haptic_installed())
44 {
45 if (al_is_display_haptic(display)) //never get to here
46 hap = al_get_haptic_from_display(display);
47 }
48
49 while(1); //ends up here
50
51}
and here's the AndroidManifest.xml 1<?xml version="1.0" encoding="utf-8"?>
2<manifest xmlns:android="http://schemas.android.com/apk/res/android"
3 package="com.tootiredgames.gravstorm" >
4
5 <uses-permission android:name="android.permission.INTERNET" />
6 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
7 <uses-permission android:name="android.permission.VIBRATE" />
8
9 <application
10 android:allowBackup="true"
11 android:icon="@mipmap/ic_launcher"
12 android:label="@string/app_name"
13 android:roundIcon="@mipmap/ic_launcher_round"
14 android:supportsRtl="true"
15 android:theme="@style/AppTheme"
16 android:windowSoftInputMode="stateVisible">
17 <activity android:name=".MainActivity"
18 android:configChanges="orientation|screenSize"
19 android:screenOrientation="landscape" >
20 <intent-filter>
21 <action android:name="android.intent.action.MAIN" />
22 <category android:name="android.intent.category.LAUNCHER" />
23 </intent-filter>
24 </activity>
25 </application>
26
27</manifest>
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beoran
Member #12,636
March 2011
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It seems i forgot that I didn't implement haptics for Android and iOS at all. It only works on Linux and Windows for now. How silly of me! Seeing my current situation I can't say when I will get to implemening the Android haptics driver for Allegro5. It's not that hard, though, so you could try it yourself if you need this urgently. I will try to assist you as I can. Edit: on second thought, it doesn't seem right to leave you up shit creek without a paddle. I will write the driver myself asap. I would appreciate your help to test it though. |
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Ian Lewis
Member #15,817
December 2014
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Ah, well that would explain it :-) Thanks very much for the offer. I appreciate it, but don't let it get in the way of anything more important in your life :-) Yes, I'm happy to test it. Let me know when you have something to test. I'll PM you my email address, in case that's useful. Cheers, Ian. |
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