step

examples/others/android/example/README.md

@@ -0,0 +1,42 @@
+### Android example
+
+To compile example to shared library you will need [Android NDK](https://developer.android.com/ndk/downloads/index.html).
+To build Android apk you will need [Android SDK](http://developer.android.com/sdk/index.html#Other).
+
+Export path to Android NDK, point to location where you have unpacked archive:
+
+    export ANDROID_NDK_HOME=/opt/android-ndk
+
+Add toolchain bin directory to PATH:
+
+    export PATH=${ANDROID_NDK_HOME}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin:${PATH}
+
+Export sysroot and libdirs:
+    
+    export ANDROID_SYSROOT=${ANDROID_NDK_HOME}/sysroot
+    export ANDROID_PLATFORM=${ANDROID_NDK_HOME}/platforms/android-16/arch-arm
+    export ANDROID_TOOLCHAIN=${ANDROID_NDK_HOME}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
+
+And compile shared library:
+
+    CC="arm-linux-androideabi-gcc" \
+    CGO_CFLAGS="-I${ANDROID_SYSROOT}/usr/include -I${ANDROID_SYSROOT}/usr/include/arm-linux-androideabi --sysroot=${ANDROID_SYSROOT} -D__ANDROID_API__=16" \
+    CGO_LDFLAGS="-L${ANDROID_SYSROOT}/usr/lib/arm-linux-androideabi -L${ANDROID_PLATFORM}/usr/lib -L${ANDROID_TOOLCHAIN}/arm-linux-androideabi/lib -L${ANDROID_TOOLCHAIN}/lib/gcc/arm-linux-androideabi/4.9.x --sysroot=${ANDROID_PLATFORM}" \
+    CGO_ENABLED=1 GOOS=android GOARCH=arm \
+    go build -buildmode=c-shared -ldflags="-s -w -extldflags=-Wl,-soname,libexample.so" \
+    -o=android/libs/armeabi-v7a/libexample.so
+
+To build apk export path to Android SDK, point to location where you unpacked archive:
+
+    export ANDROID_HOME=/opt/android-sdk
+
+And build apk with ant:
+
+    cd android
+    ant clean debug
+
+Or with gradle:
+
+    ./gradlew assembleDebug
+
+If everything is successfully built apk can be found in bin/ directory or in the android/build/outputs in case `gradle` is used.

examples/others/android/example/android/AndroidManifest.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
+        package="com.github.gen2brain.raylib.go" 
+        android:versionCode="1" 
+        android:versionName="1.0">
+
+    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="27" />
+    <uses-feature android:glEsVersion="0x00020000" android:required="true" />
+
+    <!-- We do not have Java code. Therefore android:hasCode is set to false. -->
+    <application android:allowBackup="false" android:hasCode="false" 
+                android:label="@string/app_name" 
+                android:icon="@drawable/icon"
+                android:theme="@android:style/Theme.Holo.NoActionBar.Fullscreen" >
+
+        <!-- Our activity is the built-in NativeActivity framework class. -->
+        <activity android:name="android.app.NativeActivity"
+                android:configChanges="orientation|keyboardHidden|screenSize"
+                android:screenOrientation="landscape"
+                android:clearTaskOnLaunch="true">
+
+            <!-- Tell NativeActivity the name of our .so -->
+            <meta-data android:name="android.app.lib_name" android:value="example" />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+    
+</manifest>

examples/others/android/example/android/build.gradle

@@ -0,0 +1,34 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
+
+    defaultConfig {
+        applicationId "com.example.android"
+        minSdkVersion 16
+        targetSdkVersion 27
+        versionCode 1
+        versionName '1.0'
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            zipAlignEnabled true
+        }
+    }
+
+    sourceSets {
+        main {
+            jniLibs.srcDirs = ['libs']
+            res.srcDirs = ['res']
+            assets.srcDirs = ['assets']
+
+            manifest.srcFile 'AndroidManifest.xml'
+        }
+    }
+}
+
+dependencies {
+}

examples/others/android/example/android/build.xml

@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project name="example" default="help">
+
+    <!-- The local.properties file is created and updated by the 'android' tool.
+         It contains the path to the SDK. It should *NOT* be checked into
+         Version Control Systems. -->
+    <property file="local.properties" />
+
+    <!-- The ant.properties file can be created by you. It is only edited by the
+         'android' tool to add properties to it.
+         This is the place to change some Ant specific build properties.
+         Here are some properties you may want to change/update:
+
+         source.dir
+             The name of the source directory. Default is 'src'.
+         out.dir
+             The name of the output directory. Default is 'bin'.
+
+         For other overridable properties, look at the beginning of the rules
+         files in the SDK, at tools/ant/build.xml
+
+         Properties related to the SDK location or the project target should
+         be updated using the 'android' tool with the 'update' action.
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems.
+
+         -->
+    <property file="ant.properties" />
+
+    <!-- if sdk.dir was not set from one of the property file, then
+         get it from the ANDROID_HOME env var.
+         This must be done before we load project.properties since
+         the proguard config can use sdk.dir -->
+    <property environment="env" />
+    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
+        <isset property="env.ANDROID_HOME" />
+    </condition>
+
+    <!-- The project.properties file is created and updated by the 'android'
+         tool, as well as ADT.
+
+         This contains project specific properties such as project target, and library
+         dependencies. Lower level build properties are stored in ant.properties
+         (or in .classpath for Eclipse projects).
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems. -->
+    <loadproperties srcFile="project.properties" />
+
+    <!-- quick check on sdk.dir -->
+    <fail
+            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
+            unless="sdk.dir"
+    />
+
+    <!--
+        Import per project custom build rules if present at the root of the project.
+        This is the place to put custom intermediary targets such as:
+            -pre-build
+            -pre-compile
+            -post-compile (This is typically used for code obfuscation.
+                           Compiled code location: ${out.classes.absolute.dir}
+                           If this is not done in place, override ${out.dex.input.absolute.dir})
+            -post-package
+            -post-build
+            -pre-clean
+    -->
+    <import file="custom_rules.xml" optional="true" />
+
+    <!-- Import the actual build file.
+
+         To customize existing targets, there are two options:
+         - Customize only one target:
+             - copy/paste the target into this file, *before* the
+               <import> task.
+             - customize it to your needs.
+         - Customize the whole content of build.xml
+             - copy/paste the content of the rules files (minus the top node)
+               into this file, replacing the <import> task.
+             - customize to your needs.
+
+         ***********************
+         ****** IMPORTANT ******
+         ***********************
+         In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
+         in order to avoid having your file be overridden by tools such as "android update project"
+    -->
+    <!-- version-tag: 1 -->
+    <import file="${sdk.dir}/tools/ant/build.xml" />
+
+</project>

examples/others/android/example/android/project.properties

@@ -0,0 +1,2 @@
+# Project target.
+target=android-27

examples/others/android/example/android/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">raylib-go</string>
+</resources>

examples/others/android/example/build.gradle

@@ -0,0 +1,16 @@
+buildscript {
+    repositories {
+        jcenter()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.0.1'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+        google()
+    }
+}

examples/others/android/example/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Mon Nov 13 02:02:23 CET 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip

examples/others/android/example/gradlew

@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

examples/others/android/example/gradlew.bat

@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

examples/others/android/example/main.go

@@ -0,0 +1,123 @@
+package main
+
+import (
+	"os"
+	"runtime"
+
+	"github.com/gen2brain/raylib-go/raylib"
+)
+
+// Game states
+const (
+	Logo = iota
+	Title
+	GamePlay
+	Ending
+)
+
+func init() {
+	rl.SetCallbackFunc(main)
+}
+
+func main() {
+	screenWidth := int32(800)
+	screenHeight := int32(450)
+
+	rl.SetConfigFlags(rl.FlagVsyncHint)
+
+	rl.InitWindow(screenWidth, screenHeight, "Android example")
+
+	rl.InitAudioDevice()
+
+	currentScreen := Logo
+	windowShouldClose := false
+
+	texture := rl.LoadTexture("raylib_logo.png") // Load texture (placed on assets folder)
+	fx := rl.LoadSound("coin.wav")               // Load WAV audio file (placed on assets folder)
+	ambient := rl.LoadMusicStream("ambient.ogg") // Load music
+
+	rl.PlayMusicStream(ambient)
+
+	framesCounter := 0 // Used to count frames
+
+	//rl.SetTargetFPS(60)
+
+	for !windowShouldClose {
+		rl.UpdateMusicStream(ambient)
+
+		if runtime.GOOS == "android" && rl.IsKeyDown(rl.KeyBack) || rl.WindowShouldClose() {
+			windowShouldClose = true
+		}
+
+		switch currentScreen {
+		case Logo:
+			framesCounter++ // Count frames
+
+			// Wait for 4 seconds (240 frames) before jumping to Title screen
+			if framesCounter > 240 {
+				currentScreen = Title
+			}
+			break
+		case Title:
+			// Press enter to change to GamePlay screen
+			if rl.IsGestureDetected(rl.GestureTap) {
+				rl.PlaySound(fx)
+				currentScreen = GamePlay
+			}
+			break
+		case GamePlay:
+			// Press enter to change to Ending screen
+			if rl.IsGestureDetected(rl.GestureTap) {
+				rl.PlaySound(fx)
+				currentScreen = Ending
+			}
+			break
+		case Ending:
+			// Press enter to return to Title screen
+			if rl.IsGestureDetected(rl.GestureTap) {
+				rl.PlaySound(fx)
+				currentScreen = Title
+			}
+			break
+		}
+
+		rl.BeginDrawing()
+
+		rl.ClearBackground(rl.RayWhite)
+
+		switch currentScreen {
+		case Logo:
+			rl.DrawText("LOGO SCREEN", 20, 20, 40, rl.LightGray)
+			rl.DrawTexture(texture, screenWidth/2-texture.Width/2, screenHeight/2-texture.Height/2, rl.White)
+			rl.DrawText("WAIT for 4 SECONDS...", 290, 400, 20, rl.Gray)
+			break
+		case Title:
+			rl.DrawRectangle(0, 0, screenWidth, screenHeight, rl.Green)
+			rl.DrawText("TITLE SCREEN", 20, 20, 40, rl.DarkGreen)
+			rl.DrawText("TAP SCREEN to JUMP to GAMEPLAY SCREEN", 160, 220, 20, rl.DarkGreen)
+			break
+		case GamePlay:
+			rl.DrawRectangle(0, 0, screenWidth, screenHeight, rl.Purple)
+			rl.DrawText("GAMEPLAY SCREEN", 20, 20, 40, rl.Maroon)
+			rl.DrawText("TAP SCREEN to JUMP to ENDING SCREEN", 170, 220, 20, rl.Maroon)
+			break
+		case Ending:
+			rl.DrawRectangle(0, 0, screenWidth, screenHeight, rl.Blue)
+			rl.DrawText("ENDING SCREEN", 20, 20, 40, rl.DarkBlue)
+			rl.DrawText("TAP SCREEN to RETURN to TITLE SCREEN", 160, 220, 20, rl.DarkBlue)
+			break
+		default:
+			break
+		}
+
+		rl.EndDrawing()
+	}
+
+	rl.UnloadSound(fx)            // Unload sound data
+	rl.UnloadMusicStream(ambient) // Unload music stream data
+	rl.CloseAudioDevice()         // Close audio device (music streaming is automatically stopped)
+	rl.UnloadTexture(texture)     // Unload texture data
+	rl.CloseWindow()              // Close window
+
+	os.Exit(0)
+}

examples/others/android/example/settings.gradle

@@ -0,0 +1 @@
+include ':android'