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Added very basic SDL2 demo app

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This commit is contained in:
Sergii Pylypenko
2022-01-12 00:00:46 +02:00
parent 37769ef1e1
commit d30371b546
16 changed files with 1437 additions and 1504 deletions
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3
.github/workflows/ballfield.yml vendored
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@@ -30,8 +30,7 @@ jobs:
env:
APP_NAME: ballfield
# It takes one hour per one architecture to build Boost and ICU libraries, and Github limits CI script duration to 6 hours
#ARCH_LIST: armeabi-v7a arm64-v8a x86 x86_64
ARCH_LIST: arm64-v8a
ARCH_LIST: armeabi-v7a arm64-v8a x86 x86_64
runs-on: ubuntu-latest

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.github/workflows/sdl2-demo.yml vendored Normal file
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# Copyright (C) 2021-2021 Sergii Pylypenko <x.pelya.x@gmail.com>
#
# This software is provided 'as-is', without any express or implied
# warranty. In no event will the authors be held liable for any damages
# arising from the use of this software.
#
# Permission is granted to anyone to use this software for any purpose,
# including commercial applications, and to alter it and redistribute it
# freely, subject to the following restrictions:
#
# 1. The origin of this software must not be misrepresented; you must not
# claim that you wrote the original software. If you use this software
# in a product, an acknowledgment in the product documentation would be
# appreciated but is not required.
# 2. Altered source versions must be plainly marked as such, and must not be
# misrepresented as being the original software.
# 3. This notice may not be removed or altered from any source distribution.
name: sdl2-demo
on:
push:
branches:
- '*'
tags:
- '*'
pull_request: {}
jobs:
build:
env:
APP_NAME: sdl2-demo
# It takes one hour per one architecture to build Boost and ICU libraries, and Github limits CI script duration to 6 hours
ARCH_LIST: armeabi-v7a arm64-v8a x86 x86_64
runs-on: ubuntu-latest
steps:
- name: Check out the repository
uses: actions/checkout@v2
with:
fetch-depth: 1
submodules: false
- name: Check out submodules
# There are many more submodules in this repo, we don't need them all
run: >
git submodule update --init --recursive --depth=1
project/jni/boost/src project/jni/iconv/src
project/jni/sdl2 project/jni/sdl2_image
project/jni/sdl2_mixer project/jni/sdl2_ttf
- name: Symlink the application dir
run: |
ln -s ${APP_NAME} project/jni/application/src
- name: Set architectures list
run: |
sed -i "s/MultiABI=.*/MultiABI='${ARCH_LIST}'/g" project/jni/application/src/AndroidAppSettings.cfg
- name: Build Boost, ICU, and OpenSSL
run: |
export PATH=$ANDROID_NDK_LATEST_HOME:$PATH
./changeAppSettings.sh
- name: Set up Gradle and Android SDK licenses
working-directory: project
run: |
for Y in `seq 20`; do echo y; done | sudo $ANDROID_SDK_ROOT/cmdline-tools/latest/bin/sdkmanager --licenses
./gradlew assembleRelease || true
for Y in `seq 20`; do echo y; done | sudo $ANDROID_SDK_ROOT/cmdline-tools/latest/bin/sdkmanager --licenses --sdk_root=`pwd`
mkdir -p $HOME/.android
keytool -genkey -v -keystore $HOME/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000 -dname "CN=Debug, OU=Debug, O=Debug, L=Debug, ST=Debug, C=Debug"
- name: Hyper turbo build script GOOOOOOOOOOOO
run: |
export PATH=$ANDROID_NDK_LATEST_HOME:$ANDROID_SDK_ROOT/build-tools/31.0.0:$PATH
./build.sh
- name: Package
run: |
mkdir -p upload/
mv project/app/build/outputs/apk/release/app-release.apk upload/${APP_NAME}.apk
# Github actions is dumb and won't let you download single files from artifacts, so break up the artifacts instead
- uses: actions/upload-artifact@v2
with:
name: ${{env.APP_NAME}}
path: upload
if-no-files-found: error

46
project/jni/application/sdl-1.3-test/AndroidAppSettings.cfg
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# The application settings for Android libSDL port
AppSettingVersion=17
LibSdlVersion=1.3
AppName="SDL sprite test"
AppFullName=net.sdl.testsprite
ScreenOrientation=h
InhibitSuspend=n
AppDataDownloadUrl="Game data is 1 Mb|ballfield2.zip"
VideoDepthBpp=16
NeedDepthBuffer=n
NeedStencilBuffer=n
NeedGles2=n
SwVideoMode=n
SdlVideoResize=y
SdlVideoResizeKeepAspect=n
CompatibilityHacks=n
CompatibilityHacksStaticInit=n
AppUsesMouse=y
AppNeedsTwoButtonMouse=y
ShowMouseCursor=n
ForceRelativeMouseMode=n
AppNeedsArrowKeys=n
AppNeedsTextInput=y
AppUsesJoystick=n
AppHandlesJoystickSensitivity=n
AppUsesMultitouch=y
NonBlockingSwapBuffers=n
RedefinedKeys="SPACE RETURN NO_REMAP NO_REMAP SPACE ESCAPE"
AppTouchscreenKeyboardKeysAmount=0
AppTouchscreenKeyboardKeysAmountAutoFire=0
RedefinedKeysScreenKb="1 2 3 4 5 6 1 2 3 4"
StartupMenuButtonTimeout=3000
HiddenMenuOptions='OptionalDownloadConfig'
FirstStartMenuOptions=''
MultiABI=n
AppVersionCode=101
AppVersionName="1.01"
ResetSdlConfigForThisVersion=n
DeleteFilesOnUpgrade="%"
CompiledLibraries="sdl_mixer sdl_image"
CustomBuildScript=n
AppCflags='-O2 -finline-functions'
AppLdflags=''
AppSubdirsBuild=''
AppCmdline=''
ReadmeText='^Readme text'

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project/jni/application/sdl-1.3-test/common.c
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project/jni/application/sdl-1.3-test/common.h
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/*
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* A simple test program framework */
#include "SDL.h"
#include <android/log.h>
#define fprintf(X, ...) __android_log_print(ANDROID_LOG_INFO, "SDL-test", __VA_ARGS__)
#ifdef __NDS__
#define DEFAULT_WINDOW_WIDTH 256
#define DEFAULT_WINDOW_HEIGHT (2*192)
#else
#define DEFAULT_WINDOW_WIDTH 640
#define DEFAULT_WINDOW_HEIGHT 480
#endif
#define VERBOSE_VIDEO 0x00000001
#define VERBOSE_MODES 0x00000002
#define VERBOSE_RENDER 0x00000004
#define VERBOSE_EVENT 0x00000008
#define VERBOSE_AUDIO 0x00000010
typedef struct
{
/* SDL init flags */
char **argv;
Uint32 flags;
Uint32 verbose;
/* Video info */
const char *videodriver;
int display;
const char *window_title;
const char *window_icon;
Uint32 window_flags;
int window_x;
int window_y;
int window_w;
int window_h;
int depth;
int refresh_rate;
int num_windows;
SDL_Window **windows;
/* Renderer info */
const char *renderdriver;
Uint32 render_flags;
SDL_bool skip_renderer;
SDL_Renderer **renderers;
/* Audio info */
const char *audiodriver;
SDL_AudioSpec audiospec;
/* GL settings */
int gl_red_size;
int gl_green_size;
int gl_blue_size;
int gl_alpha_size;
int gl_buffer_size;
int gl_depth_size;
int gl_stencil_size;
int gl_double_buffer;
int gl_accum_red_size;
int gl_accum_green_size;
int gl_accum_blue_size;
int gl_accum_alpha_size;
int gl_stereo;
int gl_multisamplebuffers;
int gl_multisamplesamples;
int gl_retained_backing;
int gl_accelerated;
int gl_major_version;
int gl_minor_version;
} CommonState;
extern CommonState *CommonCreateState(char **argv, Uint32 flags);
extern int CommonArg(CommonState * state, int index);
extern const char *CommonUsage(CommonState * state);
extern SDL_bool CommonInit(CommonState * state);
extern void CommonEvent(CommonState * state, SDL_Event * event, int *done);
extern void CommonQuit(CommonState * state);
/* vi: set ts=4 sw=4 expandtab: */

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project/jni/application/sdl-1.3-test/testspriteminimal.c
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/*
Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Simple program: Move N sprites around on the screen as fast as possible */
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "SDL.h"
#include "common.h"
#ifdef __NDS__
#define WINDOW_WIDTH 256
#define WINDOW_HEIGHT (2*192)
#else
#define WINDOW_WIDTH 800
#define WINDOW_HEIGHT 480
#endif
#define NUM_SPRITES 100
#define MAX_SPEED 1
static SDL_Texture *sprite;
static SDL_Rect positions[NUM_SPRITES];
static SDL_Rect velocities[NUM_SPRITES];
static int sprite_w, sprite_h;
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
static void
quit(int rc)
{
exit(rc);
}
int
LoadSprite(char *file, SDL_Renderer *renderer)
{
SDL_Surface *temp;
/* Load the sprite image */
temp = SDL_LoadBMP(file);
if (temp == NULL) {
fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());
return (-1);
}
sprite_w = temp->w;
sprite_h = temp->h;
/* Set transparent pixel as the pixel at (0,0) */
if (temp->format->palette) {
SDL_SetColorKey(temp, SDL_TRUE, *(Uint8 *) temp->pixels);
} else {
switch (temp->format->BitsPerPixel) {
case 15:
SDL_SetColorKey(temp, SDL_TRUE,
(*(Uint16 *) temp->pixels) & 0x00007FFF);
break;
case 16:
SDL_SetColorKey(temp, SDL_TRUE, *(Uint16 *) temp->pixels);
break;
case 24:
SDL_SetColorKey(temp, SDL_TRUE,
(*(Uint32 *) temp->pixels) & 0x00FFFFFF);
break;
case 32:
SDL_SetColorKey(temp, SDL_TRUE, *(Uint32 *) temp->pixels);
break;
}
}
/* Create textures from the image */
sprite = SDL_CreateTextureFromSurface(renderer, temp);
if (!sprite) {
fprintf(stderr, "Couldn't create texture: %s\n", SDL_GetError());
SDL_FreeSurface(temp);
return (-1);
}
SDL_FreeSurface(temp);
/* We're ready to roll. :) */
return (0);
}
void
MoveSprites(SDL_Window * window, SDL_Renderer * renderer, SDL_Texture * sprite)
{
int i;
int window_w = WINDOW_WIDTH;
int window_h = WINDOW_HEIGHT;
SDL_Rect *position, *velocity;
/* Draw a gray background */
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
/* Move the sprite, bounce at the wall, and draw */
for (i = 0; i < NUM_SPRITES; ++i) {
position = &positions[i];
velocity = &velocities[i];
position->x += velocity->x;
if ((position->x < 0) || (position->x >= (window_w - sprite_w))) {
velocity->x = -velocity->x;
position->x += velocity->x;
}
position->y += velocity->y;
if ((position->y < 0) || (position->y >= (window_h - sprite_h))) {
velocity->y = -velocity->y;
position->y += velocity->y;
}
/* Blit the sprite onto the screen */
SDL_RenderCopy(renderer, sprite, NULL, position);
}
/* Update the screen! */
SDL_RenderPresent(renderer);
}
int
main(int argc, char *argv[])
{
SDL_Window *window;
SDL_Renderer *renderer;
int i, done;
SDL_Event event;
if (SDL_CreateWindowAndRenderer(WINDOW_WIDTH, WINDOW_HEIGHT, 0, &window, &renderer) < 0) {
quit(2);
}
SDL_RendererInfo info;
SDL_GetRendererInfo(renderer, &info);
fprintf(stderr, "Renderer: %s flags %d max texture %dx%d\n", info.name, info.flags, info.max_texture_width, info.max_texture_height);
if (LoadSprite("icon.bmp", renderer) < 0) {
quit(2);
}
/* Initialize the sprite positions */
srand(time(NULL));
for (i = 0; i < NUM_SPRITES; ++i) {
positions[i].x = rand() % (WINDOW_WIDTH - sprite_w);
positions[i].y = rand() % (WINDOW_HEIGHT - sprite_h);
positions[i].w = sprite_w;
positions[i].h = sprite_h;
velocities[i].x = 0;
velocities[i].y = 0;
while (!velocities[i].x && !velocities[i].y) {
velocities[i].x = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
velocities[i].y = (rand() % (MAX_SPEED * 2 + 1)) - MAX_SPEED;
}
}
/* Main render loop */
done = 0;
while (!done) {
/* Check for events */
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT || event.type == SDL_KEYDOWN) {
done = 1;
}
}
MoveSprites(window, renderer, sprite);
//fprintf(stderr, "Frame rendered, you see nothing on screen, that's bug in SDL, lalala\n");
}
quit(0);
}
/* vi: set ts=4 sw=4 expandtab: */

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project/jni/application/sdl2-demo/AndroidAppSettings.cfg Normal file
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# The application settings for Android libSDL port
# Specify application name (e.x. My Application)
AppName="SDL2 Demo"
# Specify reversed site name of application (e.x. com.mysite.myapp)
AppFullName=orel33.sdl2.demo
# Application version code (integer)
AppVersionCode=1
# Application user-visible version name (string)
AppVersionName="1"
# Specify path to download application data in zip archive in the form "Description|URL|MirrorURL^Description2|URL2|MirrorURL2^..."
# If you'll start Description with '!' symbol it will be enabled by default, '!!' will also hide the entry from the menu, so it cannot be disabled
# If the URL in in the form ':dir/file.dat:http://URL/' it will be downloaded as binary BLOB to the application dir and not unzipped
# If the URL does not contain 'http://' or 'https://', it is treated as file from 'project/jni/application/src/AndroidData' dir -
# these files are put inside .apk package by the build system
# You can specify Google Play expansion files in the form 'obb:main.12345' or 'obb:patch.12345' where 12345 is the app version for the obb file
# You can mount expansion files created with jobb tool if you put 'mnt:main.12345' or 'mnt:patch.12345'
# The mount directory will be returned by calling getenv("ANDROID_OBB_MOUNT_DIR")
# Android app bundles do not support .obb files, they use asset packs instead.
# This app project includes one pre-configured install-time asset pack.
# To put your data into asset pack, copy it to the directory AndroidData/assetpack
# and run changeAppSettings.sh. The asset pack zip archive will be returned by
# getenv("ANDROID_ASSET_PACK_PATH"), this call will return NULL if the asset pack is not installed.
# You can put "assetpack" keyword to AppDataDownloadUrl, the code will check
# if the asset pack is installed and will not download the data from other URLs.
# You can extract files from the asset pack the same way you extract files from the app assets.
# You can use .zip.xz archives for better compression, but you need to add 'lzma' to CompiledLibraries
# Generate .zip.xz files like this: zip -0 -r data.zip your-data/* ; xz -8 data.zip
AppDataDownloadUrl="!!App data|data.zip"
# Reset SDL config when updating application to the new version (y) / (n)
ResetSdlConfigForThisVersion=n
# Delete application data files when upgrading (specify file/dir paths separated by spaces)
DeleteFilesOnUpgrade="libsdl-DownloadFinished-0.flag"
# Here you may type readme text, which will be shown during startup. Format is:
# Text in English, use \\\\n to separate lines (that's four backslashes)^de:Text in Deutsch^ru:Text in Russian^button:Button that will open some URL:http://url-to-open/
ReadmeText='^You may press "Home" now - the data will be downloaded in background'
# libSDL version to use (1.2/2)
LibSdlVersion=2
# Specify screen orientation: (v)ertical/(p)ortrait or (h)orizontal/(l)andscape
ScreenOrientation=h
# Video color depth - 16 BPP is the fastest and supported for all modes, 24 bpp is supported only
# with SwVideoMode=y, SDL_OPENGL mode supports everything. (16)/(24)/(32)
VideoDepthBpp=24
# Enable OpenGL depth buffer (needed only for 3-d applications, small speed decrease) (y) or (n)
NeedDepthBuffer=n
# Enable OpenGL stencil buffer (needed only for 3-d applications, small speed decrease) (y) or (n)
NeedStencilBuffer=n
# Use GLES 2.x context
# you need this option only if you're developing 3-d app (y) or (n)
NeedGles2=y
# Use GLES 3.x context
# you need this option only if you're developing 3-d app (y) or (n)
NeedGles3=n
# Use gl4es library for provide OpenGL 1.x functionality to OpenGL ES accelerated cards (y) or (n)
UseGl4es=n
# Application uses software video buffer - you're calling SDL_SetVideoMode() without SDL_HWSURFACE and without SDL_OPENGL,
# this will allow small speed optimization. Enable this even when you're using SDL_HWSURFACE. (y) or (n)
SwVideoMode=n
# Application video output will be resized to fit into native device screen (y)/(n)
SdlVideoResize=y
# Application resizing will keep 4:3 aspect ratio, with black bars at sides (y)/(n)
SdlVideoResizeKeepAspect=n
# Do not allow device to sleep when the application is in foreground, set this for video players or apps which use accelerometer
InhibitSuspend=y
# Create Android service, so the app is less likely to be killed while in background
CreateService=n
# Application does not call SDL_Flip() or SDL_UpdateRects() appropriately, or draws from non-main thread -
# enabling the compatibility mode will force screen update every 100 milliseconds, which is laggy and inefficient (y) or (n)
CompatibilityHacksForceScreenUpdate=n
# Application does not call SDL_Flip() or SDL_UpdateRects() after mouse click (ScummVM and all Amiga emulators do that) -
# force screen update by moving mouse cursor a little after each click (y) or (n)
CompatibilityHacksForceScreenUpdateMouseClick=n
# Application initializes SDL audio/video inside static constructors (which is bad, you won't be able to run ndk-gdb) (y)/(n)
CompatibilityHacksStaticInit=n
# On-screen Android soft text input emulates hardware keyboard, this will only work with Hackers Keyboard app (y)/(n)
CompatibilityHacksTextInputEmulatesHwKeyboard=n
# Built-in text input keyboards with custom layouts for emulators, requires CompatibilityHacksTextInputEmulatesHwKeyboard=y
# 0 or empty - standard Android keyboard
# 1 - Simple QWERTY keyboard, no function keys, no arrow keys
# 2 - Commodore 64 keyboard
# 3 - Amiga keyboard
# 4 - Atari800 keyboard
TextInputKeyboard=
# Hack for broken devices: prevent audio chopping, by sleeping a bit after pushing each audio chunk (y)/(n)
CompatibilityHacksPreventAudioChopping=n
# Hack for broken apps: application ignores audio buffer size returned by SDL (y)/(n)
CompatibilityHacksAppIgnoresAudioBufferSize=n
# Hack for VCMI: preload additional shared libraries before aplication start
CompatibilityHacksAdditionalPreloadedSharedLibraries=""
# Hack for Free Heroes 2, which redraws the screen inside SDL_PumpEvents(): slow and compatible SDL event queue -
# do not use it with accelerometer/gyroscope, or your app may freeze at random (y)/(n)
CompatibilityHacksSlowCompatibleEventQueue=n
# Save and restore OpenGL state when drawing on-screen keyboard for apps that use SDL_OPENGL
CompatibilityHacksTouchscreenKeyboardSaveRestoreOpenGLState=n
# Application uses SDL_UpdateRects() properly, and does not draw in any region outside those rects.
# This improves drawing speed, but I know only one application that does that, and it's written by me (y)/(n)
CompatibilityHacksProperUsageOfSDL_UpdateRects=n
# Application uses mouse (y) or (n), this will show mouse emulation dialog to the user
AppUsesMouse=y
# Application needs two-button mouse, will also enable advanced point-and-click features (y) or (n)
AppNeedsTwoButtonMouse=n
# Right mouse button can do long-press/drag&drop action, necessary for some games (y) or (n)
# If you disable it, swiping with two fingers will send mouse wheel events
RightMouseButtonLongPress=n
# Show SDL mouse cursor, for applications that do not draw cursor at all (y) or (n)
ShowMouseCursor=n
# Screen follows mouse cursor, when it's covered by soft keyboard, this works only in software video mode (y) or (n)
ScreenFollowsMouse=
# Generate more touch events, by default SDL generates one event per one video frame, this is useful for drawing apps (y) or (n)
GenerateSubframeTouchEvents=n
# Force relative (laptop) mouse movement mode, useful when both on-screen keyboard and mouse are needed (y) or (n)
ForceRelativeMouseMode=n
# Show on-screen dpad/joystick, that will act as arrow keys (y) or (n)
AppNeedsArrowKeys=y
# On-screen dpad/joystick will appear under finger when it touches the screen (y) or (n)
# Joystick always follows finger, so moving mouse requires touching the screen with other finger
FloatingScreenJoystick=n
# Application needs text input (y) or (n), enables button for text input on screen
AppNeedsTextInput=n
# Application uses joystick (y) or (n), the on-screen DPAD will be used as joystick 0 axes 0-1
# This will disable AppNeedsArrowKeys option
AppUsesJoystick=n
# Application uses second on-screen joystick, as SDL joystick 0 axes 2-3 (y)/(n)
AppUsesSecondJoystick=n
# Application uses third on-screen joystick, as SDL joystick 0 axes 20-21 (y)/(n)
AppUsesThirdJoystick=n
# Application uses accelerometer (y) or (n), the accelerometer will be used as joystick 1 axes 0-1 and 5-7
AppUsesAccelerometer=n
# Application uses gyroscope (y) or (n), the gyroscope will be used as joystick 1 axes 2-4
AppUsesGyroscope=n
# Application uses orientation sensor (y) or (n), reported as joystick 1 axes 8-10
AppUsesOrientationSensor=
# Use gyroscope to move mouse cursor (y) or (n), it eats battery, and can be disabled in settings, do not use with AppUsesGyroscope setting
MoveMouseWithGyroscope=n
# Application uses multitouch (y) or (n), multitouch events are passed as SDL_JOYBALLMOTION events for the joystick 0
AppUsesMultitouch=n
# Application records audio (it will use any available source, such a s microphone)
# API is defined in file SDL_android.h: int SDL_ANDROID_OpenAudioRecording(SDL_AudioSpec *spec); void SDL_ANDROID_CloseAudioRecording(void);
# This option will add additional permission to Android manifest (y)/(n)
AppRecordsAudio=n
# Application needs read/write access SD card. Always disable it, unless you want to access user photos and downloads. (y) / (n)
AccessSdCard=n
# Application needs to read it's own OBB file. Enable this if you are using Play Store expansion files. (y) / (n)
ReadObbFile=y
# Application needs Internet access. If you disable it, you'll have to bundle all your data files inside .apk (y) / (n)
AccessInternet=y
# Immersive mode - Android will hide on-screen Home/Back keys. Looks bad if you invoke Android keyboard. (y) / (n)
ImmersiveMode=y
# Draw in the display cutout area. (y) / (n)
DrawInDisplayCutout=
# Hide Android system mouse cursor image when USB mouse is attached (y) or (n) - the app must draw it's own mouse cursor
HideSystemMousePointer=
# Application implements Android-specific routines to put to background, and will not draw anything to screen
# between SDL_ACTIVEEVENT lost / gained notifications - you should check for them
# rigth after SDL_Flip(), if (n) then SDL_Flip() will block till app in background (y) or (n)
# This option is reported to be buggy, sometimes failing to restore video state
NonBlockingSwapBuffers=n
# Redefine common hardware keys to SDL keysyms
# BACK hardware key is available on all devices, MENU is available on pre-ICS devices, other keys may be absent
# SEARCH and CALL by default return same keycode as DPAD_CENTER - one of those keys is available on most devices
# Use word NO_REMAP if you want to preserve native functionality for certain key (volume keys are 3-rd and 4-th)
# Keys: TOUCHSCREEN (works only when AppUsesMouse=n), DPAD_CENTER/SEARCH, VOLUMEUP, VOLUMEDOWN, MENU, BACK, CAMERA
RedefinedKeys="LALT RETURN NO_REMAP NO_REMAP NO_REMAP"
# Number of virtual keyboard keys - currently 12 keys is the maximum
AppTouchscreenKeyboardKeysAmount=2
# Define SDL keysyms for multitouch gestures - pinch-zoom in, pinch-zoom out, rotate left, rotate right
RedefinedKeysScreenGestures=""
# Redefine on-screen keyboard keys to SDL keysyms - currently 12 keys is the maximum
RedefinedKeysScreenKb="SPACE LCTRL "
# Names for on-screen keyboard keys, such as Fire, Jump, Run etc, separated by spaces, they are used in SDL config menu
RedefinedKeysScreenKbNames="Jump Action"
# On-screen keys theme
# 0 = Ultimate Droid by Sean Stieber (green, with cross joystick)
# 1 = Simple Theme by Beholder (white, with cross joystick)
# 2 = Sun by Sirea (yellow, with round joystick)
# 3 = Keen by Gerstrong (multicolor, with round joystick)
# 4 = Retro by Santiago Radeff (red/white, with cross joystick)
# 5 = GameBoy from RetroArch
# 6 = PlayStation from RetroArch
# 7 = SuperNintendo from RetroArch
# 8 = DualShock from RetroArch
# 9 = Nintendo64 from RetroArch
TouchscreenKeysTheme=3
# Redefine gamepad keys to SDL keysyms, button order is:
# A B X Y L1 R1 L2 R2 LThumb RThumb Start Select Up Down Left Right LThumbUp LThumbDown LThumbLeft LThumbRight RThumbUp RThumbDown RThumbLeft RThumbRight
RedefinedKeysGamepad="SPACE LCTRL SPACE LCTRL SPACE LCTRL SPACE LCTRL SPACE LCTRL"
# Redefine keys for the second gamepad, same as the first gamepad if not set:
RedefinedKeysSecondGamepad=""
# Redefine keys for the third gamepad, same as the first gamepad if not set:
RedefinedKeysThirdGamepad=""
# Redefine keys for the fourth gamepad, same as the first gamepad if not set:
RedefinedKeysFourthGamepad=""
# How long to show startup menu button, in msec, 0 to disable startup menu
StartupMenuButtonTimeout=3000
# Menu items to hide from startup menu, available menu items:
# SettingsMenu.OkButton SettingsMenu.DummyMenu SettingsMenu.MainMenu SettingsMenuMisc.DownloadConfig SettingsMenuMisc.OptionalDownloadConfig SettingsMenuMisc.AudioConfig SettingsMenuMisc.VideoSettingsConfig SettingsMenuMisc.ShowReadme SettingsMenuMisc.GyroscopeCalibration SettingsMenuMisc.StorageAccessConfig SettingsMenuMisc.CommandlineConfig SettingsMenuMisc.ResetToDefaultsConfig SettingsMenuMouse.MouseConfigMainMenu SettingsMenuMouse.DisplaySizeConfig SettingsMenuMouse.LeftClickConfig SettingsMenuMouse.RightClickConfig SettingsMenuMouse.AdditionalMouseConfig SettingsMenuMouse.JoystickMouseConfig SettingsMenuMouse.TouchPressureMeasurementTool SettingsMenuMouse.CalibrateTouchscreenMenu SettingsMenuKeyboard.KeyboardConfigMainMenu SettingsMenuKeyboard.ScreenKeyboardSizeConfig SettingsMenuKeyboard.ScreenKeyboardDrawSizeConfig SettingsMenuKeyboard.ScreenKeyboardThemeConfig SettingsMenuKeyboard.ScreenKeyboardTransparencyConfig SettingsMenuKeyboard.RemapHwKeysConfig SettingsMenuKeyboard.RemapScreenKbConfig SettingsMenuKeyboard.ScreenGesturesConfig SettingsMenuKeyboard.CustomizeScreenKbLayout SettingsMenuKeyboard.ScreenKeyboardAdvanced
HiddenMenuOptions='SettingsMenuMisc.OptionalDownloadConfig SettingsMenuMouse.DisplaySizeConfig'
# Menu items to show at startup - this is Java code snippet, leave empty for default
# new SettingsMenuMisc.ShowReadme(), (AppUsesMouse \&\& \! ForceRelativeMouseMode \? new SettingsMenuMouse.DisplaySizeConfig(true) : new SettingsMenu.DummyMenu()), new SettingsMenuMisc.OptionalDownloadConfig(true), new SettingsMenuMisc.GyroscopeCalibration()
# Available menu items:
# SettingsMenu.OkButton SettingsMenu.DummyMenu SettingsMenu.MainMenu SettingsMenuMisc.DownloadConfig SettingsMenuMisc.OptionalDownloadConfig SettingsMenuMisc.AudioConfig SettingsMenuMisc.VideoSettingsConfig SettingsMenuMisc.ShowReadme SettingsMenuMisc.GyroscopeCalibration SettingsMenuMisc.StorageAccessConfig SettingsMenuMisc.CommandlineConfig SettingsMenuMisc.ResetToDefaultsConfig SettingsMenuMouse.MouseConfigMainMenu SettingsMenuMouse.DisplaySizeConfig SettingsMenuMouse.LeftClickConfig SettingsMenuMouse.RightClickConfig SettingsMenuMouse.AdditionalMouseConfig SettingsMenuMouse.JoystickMouseConfig SettingsMenuMouse.TouchPressureMeasurementTool SettingsMenuMouse.CalibrateTouchscreenMenu SettingsMenuKeyboard.KeyboardConfigMainMenu SettingsMenuKeyboard.ScreenKeyboardSizeConfig SettingsMenuKeyboard.ScreenKeyboardDrawSizeConfig SettingsMenuKeyboard.ScreenKeyboardThemeConfig SettingsMenuKeyboard.ScreenKeyboardTransparencyConfig SettingsMenuKeyboard.RemapHwKeysConfig SettingsMenuKeyboard.RemapScreenKbConfig SettingsMenuKeyboard.ScreenGesturesConfig SettingsMenuKeyboard.CustomizeScreenKbLayout SettingsMenuKeyboard.ScreenKeyboardAdvanced
FirstStartMenuOptions=''
# Minimum amount of RAM application requires, in Mb, SDL will print warning to user if it's lower
AppMinimumRAM=0
# GCC version, or 'clang' for CLANG
NDK_TOOLCHAIN_VERSION=clang
# Android platform version.
# android-16 = Android 4.1, the earliest supported version in NDK r18.
# android-18 = Android 4.3, the first version supporting GLES3.
# android-21 = Android 5.1, the first version with SO_REUSEPORT defined.
APP_PLATFORM=
# Specify architectures to compile, 'all' or 'y' to compile for all architectures.
# Available architectures: armeabi-v7a arm64-v8a x86 x86_64
MultiABI='armeabi-v7a arm64-v8a x86 x86_64'
#MultiABI='arm64-v8a'
# Optional shared libraries to compile - removing some of them will save space
# MP3 patents are expired, but libmad license is GPL, not LGPL
# Available libraries: mad (GPL-ed!) sdl_mixer sdl_image sdl_ttf sdl_net sdl_blitpool sdl_gfx sdl_sound intl xml2 lua jpeg png ogg flac tremor vorbis freetype xerces curl theora fluidsynth lzma lzo2 mikmod openal timidity zzip bzip2 yaml-cpp python boost_date_time boost_filesystem boost_iostreams boost_program_options boost_regex boost_signals boost_system boost_thread glu avcodec avdevice avfilter avformat avresample avutil swscale swresample bzip2
CompiledLibraries="c++_shared SDL2_image SDL2_ttf"
# Application uses custom build script AndroidBuild.sh instead of Android.mk (y) or (n)
CustomBuildScript=n
# Aditional CFLAGS for application
AppCflags=''
# Aditional C++-specific compiler flags for application, added after AppCflags
AppCppflags=''
# Additional LDFLAGS for application
AppLdflags=''
# If application has headers with the same name as system headers, this option tries to fix compiler flags to make it compilable
AppOverlapsSystemHeaders=n
# Build only following subdirs (empty will build all dirs, ignored with custom script)
AppSubdirsBuild='.'
# Exclude these files from build
AppBuildExclude=''
# Application command line parameters, including app name as 0-th param
AppCmdline=''
# Screen size is used by Google Play to prevent an app to be installed on devices with smaller screens
# Minimum screen size that application supports: (s)mall / (m)edium / (l)arge
MinimumScreenSize=m
# Your AdMob Publisher ID, (n) if you don't want advertisements
AdmobPublisherId=n
# Your AdMob test device ID, to receive a test ad
AdmobTestDeviceId=
# Your AdMob banner size (BANNER/FULL_BANNER/LEADERBOARD/MEDIUM_RECTANGLE/SMART_BANNER/WIDE_SKYSCRAPER/FULL_WIDTH:Height/Width:AUTO_HEIGHT/Width:Height)
AdmobBannerSize=
# Google Play Game Services application ID, required for cloud saves to work
GooglePlayGameServicesId=
# The app will open files with following extension, file path will be added to commandline params
AppOpenFileExtension=''

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GNU GENERAL PUBLIC LICENSE
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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 3 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, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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# SDL2 Demo
This is a simple example that illustrates how to use SDL2 with a basic event
loop, transparent PNG textures, TTF fonts, ... It is designed to be compatible
with Android plaforms!
## Dependencies
```
$ sudo apt-get install libsdl2-dev libsdl2-image-dev libsdl2-ttf-dev
```
## Compilation
With CMake:
```
$ mkdir build ; cd build ; cmake .. ; make VERBOSE=ON
```
Or without, if you prefer:
```
$ gcc -std=c99 -O3 -Wall -c -o main.o main.c
$ gcc -std=c99 -O3 -Wall -c -o demo.o demo.c
$ gcc -rdynamic -lm -lSDL2 -lSDL2_ttf -lSDL2_image demo.o main.o -o demo
```
## Run Demo
```
$ ./demo
```
Move the bomb with keyboard arrows and move Mario with mouse. Press ESC to quit.
Enjoy this SDL2 sample!
## Model
An empty `model.c` is also available to easily start your own project!
```
$ gcc -std=c99 -O3 -Wall -c -o main.o main.c
$ gcc -std=c99 -O3 -Wall -c -o model.o model.c
$ gcc -rdynamic -lm -lSDL2 -lSDL2_ttf -lSDL2_image model.o main.o -o model
```
--
aurelien.esnard@u-bordeaux.fr

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// SDL2 Demo by aurelien.esnard@u-bordeaux.fr
#include <SDL.h>
#include <SDL_image.h> // required to load transparent texture from PNG
#include <SDL_ttf.h> // required to use TTF fonts
#include <math.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "model.h"
/* **************************************************************** */
#define FONT "arial.ttf"
#define FONTSIZE 36
#define BACKGROUND "background.png"
#define MARIO "mario.png"
#define BOMB "bomb.png"
/* **************************************************************** */
/* PUT YOUR VARIABLES HERE */
struct Env_t {
SDL_Texture* background;
SDL_Texture* mario;
SDL_Texture* bomb;
SDL_Texture* text;
int bomb_x, bomb_y;
int mario_x, mario_y;
};
/* **************************************************************** */
/* PUT YOUR CODE HERE TO INIT TEXTURES, ... */
Env* init(SDL_Window* win, SDL_Renderer* ren, int argc, char* argv[]) {
Env* env = malloc(sizeof(struct Env_t));
PRINT("Move the bomb with keyboard arrows and move Mario with mouse.\n");
PRINT("Press ESC to quit. Enjoy this SDL2 sample!\n");
/* get current window size */
int w, h;
SDL_GetWindowSize(win, &w, &h);
/* init positions */
env->bomb_x = w / 2;
env->bomb_y = h / 4;
env->mario_x = w / 2;
env->mario_y = 3 * h / 4;
/* init background texture from PNG image */
env->background = IMG_LoadTexture(ren, BACKGROUND);
if (!env->background) ERROR("IMG_LoadTexture: %s\n", BACKGROUND);
/* init mario texture from PNG image */
env->mario = IMG_LoadTexture(ren, MARIO);
if (!env->mario) ERROR("IMG_LoadTexture: %s\n", MARIO);
/* init bomb texture from PNG image */
env->bomb = IMG_LoadTexture(ren, BOMB);
if (!env->bomb) ERROR("IMG_LoadTexture: %s\n", BOMB);
/* init text texture using Arial font */
SDL_Color color = {0, 0, 255, 255}; /* blue color in RGBA */
TTF_Font* font = TTF_OpenFont(FONT, FONTSIZE);
if (!font) ERROR("TTF_OpenFont: %s\n", FONT);
TTF_SetFontStyle(font, TTF_STYLE_BOLD); // TTF_STYLE_ITALIC | TTF_STYLE_NORMAL
SDL_Surface* surf = TTF_RenderText_Blended(font, "Hello World!", color); // blended rendering for ultra nice text
env->text = SDL_CreateTextureFromSurface(ren, surf);
SDL_FreeSurface(surf);
TTF_CloseFont(font);
return env;
}
/* **************************************************************** */
/* PUT YOUR CODE HERE TO RENDER TEXTURES, ... */
void render(SDL_Window* win, SDL_Renderer* ren, Env* env) {
SDL_Rect rect;
/* get current window size */
int w, h;
SDL_GetWindowSize(win, &w, &h);
/* render background texture */
SDL_RenderCopy(ren, env->background, NULL, NULL); /* stretch it */
/* render text texture */
SDL_QueryTexture(env->text, NULL, NULL, &rect.w, &rect.h);
rect.x = w / 2 - rect.w / 2;
rect.y = h / 2 - rect.h / 2;
SDL_RenderCopy(ren, env->text, NULL, &rect);
/* render mario texture */
SDL_QueryTexture(env->mario, NULL, NULL, &rect.w, &rect.h);
rect.x = env->mario_x - rect.w / 2;
rect.y = env->mario_y - rect.h / 2;
SDL_RenderCopy(ren, env->mario, NULL, &rect);
/* render bomb texture */
SDL_QueryTexture(env->bomb, NULL, NULL, &rect.w, &rect.h);
rect.x = env->bomb_x - rect.w / 2;
rect.y = env->bomb_y - rect.h / 2;
SDL_RenderCopy(ren, env->bomb, NULL, &rect);
/* render a triangle with lines */
SDL_SetRenderDrawColor(ren, 255, 0, 0, SDL_ALPHA_OPAQUE); /* red */
SDL_RenderDrawLine(ren, 320, 200, 300, 240);
SDL_RenderDrawLine(ren, 300, 240, 340, 240);
SDL_RenderDrawLine(ren, 340, 240, 320, 200);
/* render a circle with points */
const float pi = 3.14159265358979323846264338327950288419716939937510;
float step = 2 * pi / 300; /* smoothing */
for (float theta = 0.0; theta <= 2 * pi; theta += step) {
int x1 = 400 + 50 * cosf(theta) + 0.5;
int y1 = 400 + 50 * sinf(theta) + 0.5;
SDL_RenderDrawPoint(ren, x1, y1);
}
}
/* **************************************************************** */
/* PUT YOUR CODE HERE TO PROCESS EVENTS */
bool process(SDL_Window* win, SDL_Renderer* ren, Env* env, SDL_Event* e) {
int w, h;
SDL_GetWindowSize(win, &w, &h);
/* generic events */
if (e->type == SDL_QUIT) {
return true;
}
/* Android events */
#ifdef __ANDROID__
else if (e->type == SDL_FINGERDOWN) {
env->mario_x = e->tfinger.x * w; /* tfinger.x, normalized in [0..1] */
env->mario_y = e->tfinger.y * h; /* tfinger.y, normalized in [0..1] */
}
/* other events */
#else
else if (e->type == SDL_MOUSEBUTTONDOWN) {
SDL_Point mouse;
SDL_GetMouseState(&mouse.x, &mouse.y);
env->mario_x = mouse.x;
env->mario_y = mouse.y;
} else if (e->type == SDL_KEYDOWN) {
switch (e->key.keysym.sym) {
case SDLK_LEFT:
env->bomb_x -= 10;
break;
case SDLK_RIGHT:
env->bomb_x += 10;
break;
case SDLK_UP:
env->bomb_y -= 10;
break;
case SDLK_DOWN:
env->bomb_y += 10;
break;
case SDLK_ESCAPE:
return true;
break;
}
}
#endif
return false; /* don't quit */
}
/* **************************************************************** */
/* PUT YOUR CODE HERE TO CLEAN MEMORY */
void clean(SDL_Window* win, SDL_Renderer* ren, Env* env) {
SDL_DestroyTexture(env->background);
SDL_DestroyTexture(env->mario);
SDL_DestroyTexture(env->bomb);
SDL_DestroyTexture(env->text);
free(env);
}
/* **************************************************************** */

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// SDL2 Demo by aurelien.esnard@u-bordeaux.fr
#include <SDL.h>
#include <SDL_image.h> // required to load transparent texture from PNG
#include <SDL_ttf.h> // required to use TTF fonts
#include <stdbool.h>
#include <stdio.h>
#include "model.h"
/* **************************************************************** */
int main(int argc, char* argv[]) {
/* initialize SDL2 and some extensions */
if (SDL_Init(SDL_INIT_VIDEO) != 0)
ERROR("Error: SDL_Init VIDEO (%s)", SDL_GetError());
if (IMG_Init(IMG_INIT_PNG & IMG_INIT_PNG) != IMG_INIT_PNG)
ERROR("Error: IMG_Init PNG (%s)", SDL_GetError());
if (TTF_Init() != 0) ERROR("Error: TTF_Init (%s)", SDL_GetError());
/* create window and renderer */
SDL_Window* win = SDL_CreateWindow(
APP_NAME, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH,
SCREEN_HEIGHT, SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE);
if (!win) ERROR("Error: SDL_CreateWindow (%s)", SDL_GetError());
SDL_Renderer* ren = SDL_CreateRenderer(
win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if (!ren) ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_SOFTWARE);
if (!ren) ERROR("Error: SDL_CreateRenderer (%s)", SDL_GetError());
/* initialize your environment */
Env* env = init(win, ren, argc, argv);
/* main render loop */
SDL_Event e;
bool quit = false;
while (!quit) {
/* manage events */
while (SDL_PollEvent(&e)) {
/* process your events */
quit = process(win, ren, env, &e);
if (quit) break;
}
/* background in gray */
SDL_SetRenderDrawColor(ren, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(ren);
/* render all what you want */
render(win, ren, env);
SDL_RenderPresent(ren);
SDL_Delay(DELAY);
}
/* clean your environment */
clean(win, ren, env);
SDL_DestroyRenderer(ren);
SDL_DestroyWindow(win);
IMG_Quit();
TTF_Quit();
SDL_Quit();
return EXIT_SUCCESS;
}

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// SDL2 Model by aurelien.esnard@u-bordeaux.fr
#ifndef MODEL_H
#define MODEL_H
#include <SDL.h>
#include <stdio.h>
#include <stdbool.h>
typedef struct Env_t Env;
/* **************************************************************** */
#ifdef __ANDROID__
#define PRINT(STR, ...) do { SDL_Log(STR, ##__VA_ARGS__); } while(0)
#define ERROR(STR, ...) do { SDL_Log(STR, ##__VA_ARGS__); exit(EXIT_FAILURE); } while(0)
#else
#define PRINT(STR, ...) do { printf(STR, ##__VA_ARGS__); } while(0)
#define ERROR(STR, ...) do { fprintf(stderr, STR, ##__VA_ARGS__); exit(EXIT_FAILURE); } while(0)
#endif
/* **************************************************************** */
#define APP_NAME "SDL2 Demo"
#define SCREEN_WIDTH 600
#define SCREEN_HEIGHT 600
#define DELAY 100
/* **************************************************************** */
Env * init(SDL_Window* win, SDL_Renderer* ren, int argc, char* argv[]);
void render(SDL_Window* win, SDL_Renderer* ren, Env * env);
void clean(SDL_Window* win, SDL_Renderer* ren, Env * env);
bool process(SDL_Window* win, SDL_Renderer* ren, Env * env, SDL_Event * e);
/* **************************************************************** */
#endif