Build samples/tetris on Windows (#629)

samples/tetris/README.md

@@ -10,11 +10,19 @@ using binary distribution).
 Install SDL2 development files (see https://www.libsdl.org/download-2.0.php). For Mac -
 copy `SDL2.framework` to `$HOME/Library/Frameworks`. For Debian-like Linux -
 use `apt-get install libsdl2-dev`.
+For Windows - `pacman -S mingw-w64-x86_64-SDL2` in MinGW64 console, if you do
+not have MSYS2-MinGW64 installed - install it first as described in http://www.msys2.org
 
 To build Tetris application for your host platform use 
     
+For Mac and Linux:
+
     ./build.sh
 
+For Windows:
+
+    build.bat
+
 You also may use gradle to build this sample: `../gradlew build`. This task builds the sample for all platforms
 supported by the host. Note that SDL2 must be installed on the host.
 
@@ -34,3 +42,5 @@ To deploy executable to iPhone device take Info.plist, then use XCode and your o
 To run on Raspberry Pi one need to install SDL package with `apt-get install libsdl2-2.0.0` on the Pi. 
 Also GLES2 renderer is recommended (use `SDL_RENDER_DRIVER=opengles2 ./Tetris.kexe`).
 
+For Windows `set SDL_RENDER_DRIVER=software` may be needed on some machines.
+

samples/tetris/build.bat

@@ -0,0 +1,14 @@
+@echo off
+setlocal
+set DIR=.
+set "PATH=..\..\dist\bin;..\..\bin;%PATH%"
+if "%TARGET%" == "" set TARGET=mingw
+
+set CFLAGS=-I\msys64\mingw64\include\SDL2
+set LFLAGS=-L\msys64\mingw64\lib -lSDL2
+
+call cinterop -def "%DIR%\sdl.def" -compilerOpts "%CFLAGS%" -target "%TARGET%" -o sdl || exit /b
+call konanc -target "%TARGET%" "%DIR%\Tetris.kt" -library sdl -linkerOpts "%LFLAGS%" -opt -o Tetris || exit /b
+
+copy Tetris.kexe Tetris.exe
+copy \msys64\mingw64\bin\SDL2.dll SDL2.dll