Whew, day 3 was epic! I’m glad I got through all that! Day 4 (I hope) will be a bit easier. Now that I’ve got things “basically” working, it should be mostly a matter of getting a few more API calls doing what they need to do.<\/p>\n
Step 1 – Basic handling of onPause:<\/strong><\/p>\n First of all, right now when I restart the App without reinstalling it, I get a white screen. I think this is due to some multitasking feature on the Android where it shoves the App into the background and tells it to pause. When unpaused, I need to reload the graphics. Fixing this was pretty trivial, I just added a few lines to the onPause() method to save state and basically shutdown.<\/p>\n Step 2 – Removing the title bar:<\/strong><\/p>\n When I start my game, there is a title that says “Galcon” in text on the top. I think that is part of the default app generation. I’ll want to remove that. First of all, in “res\/layout\/main.xml” I commented out the TextView. This had no effect, but at least I cleared out some junk. This page appears to explain how to hide the title bar (I found by adding .Fullscreen it hides the Status Bar as well.)<\/p>\n http:\/\/developer.android.com\/guide\/appendix\/faq\/commontasks.html – modify AndroidManifest.xml:<\/p>\n <application android:icon=”@drawable\/icon” android:theme=”@android:style\/Theme.NoTitleBar.Fullscreen”><\/p>\n Step 3 – Adding onTouchEvent handling:<\/strong><\/p>\n I really want to start playing the game – so I’m going to add some input event handling. I’ll do this from the top level in my Activity by adding a onTouchEvent handler. The documentation for MotionEvent was a bit opaque, but I worked it out and here’s how to handle events and deal with MultiTouch. It seems like something is severely broken about the API, but this was the only way I could get MultiTouch to work in Galcon. It appears to only work with 2 fingers.<\/p>\n This works okay, except my Nexus One has a different screen resolution than my iPhone, so all my code is handling things a bit off. I added a native call in onSurfaceChanged to tell my game the size of the screen. In my event handler I translate for the game.<\/p>\n Step 4 – Keyboard handling:<\/strong><\/p>\n To play the multi-player game, I need to have the pop-up keyboard work. On the Droid, of course, this isn’t needed, but for the Nexus One and possibly other future devices it is.<\/p>\n This is apparently easier said than done. More on it in day 5!<\/p>\n","protected":false},"excerpt":{"rendered":" Whew, day 3 was epic! I’m glad I got through all that! Day 4 (I hope) will be a bit easier. Now that I’ve got things “basically” working, it should be mostly a matter of getting a few more API calls doing what they need to do. Step 1 – Basic handling of onPause: First […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112,20],"tags":[],"class_list":["post-395","post","type-post","status-publish","format-standard","hentry","category-android","category-galcon"],"_links":{"self":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts\/395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/comments?post=395"}],"version-history":[{"count":5,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts\/395\/revisions"}],"predecessor-version":[{"id":431,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts\/395\/revisions\/431"}],"wp:attachment":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/media?parent=395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/categories?post=395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/tags?post=395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} public boolean onTouchEvent(final MotionEvent e) {\r\n for (int i = 0; i<e.getPointerCount(); i++) {\r\n boolean masked = false;\r\n switch(e.getActionMasked()) {\r\n case MotionEvent.ACTION_POINTER_DOWN:\r\n case MotionEvent.ACTION_POINTER_UP:\r\n masked = true;\r\n break;\r\n }\r\n if (masked && i != e.getActionIndex()) { continue; }\r\n float x = e.getX(i); float y = e.getY(i);\r\n float dx = 0; float dy = 0;\r\n if (e.getHistorySize()!=0) {\r\n dx = x - e.getHistoricalX(i,0);\r\n dy = y - e.getHistoricalY(i,0);\r\n }\r\n int pid = e.getPointerId(i);\r\n int type = 0;\r\n switch(e.getActionMasked()) {\r\n case MotionEvent.ACTION_DOWN: type=EVT_DOWN; break;\r\n case MotionEvent.ACTION_MOVE: type=EVT_MOTION; break;\r\n case MotionEvent.ACTION_OUTSIDE: type=EVT_MOTION; break;\r\n case MotionEvent.ACTION_POINTER_DOWN: type=EVT_DOWN; break;\r\n case MotionEvent.ACTION_POINTER_UP: type=EVT_UP; break;\r\n case MotionEvent.ACTION_UP: type=EVT_UP; break;\r\n case MotionEvent.ACTION_CANCEL: type=EVT_UP; break;\r\n }\r\n event(type,(int)x,(int)y,0,pid+1,(int)dx,(int)dy,0,0);\r\n if (masked) { break; }\r\n }\r\n return true;\r\n }<\/pre>\n