Test Linux support

Configure environment for Linux.

Server runs ok, the game runs but with no window...

CMakeLists.txt

@@ -9,6 +9,8 @@ if (WIN32)
   # TODO set arch on target instead of generator
   set(IZ_PLATFORM WINDOWS)
   set(IZ_CRYPTO_LIBRARIES libcrypto libssl)
+  set(IZ_GETOPT_DEPENDENCIES dependencies/getopt-for-windows/getopt.h
+          dependencies/getopt-for-windows/getopt.c)
   add_definitions(
     -DIZ_WINDOWS
   )
@@ -93,6 +95,16 @@ elseif(IZ_PLATFORM STREQUAL "MACOS")
     /usr/local/include/openssl
   )
 
+  link_directories(
+    /usr/local/lib
+  )
+elseif(IZ_PLATFORM STREQUAL "UNIX")
+  include_directories(
+    /usr/local/include
+    /usr/local/include/SDL2
+    /usr/local/include/openssl
+  )
+
   link_directories(
     /usr/local/lib
   )
@@ -106,8 +118,7 @@ add_executable(
     ${IZ_EXECUTABLE_TYPE}
     dependencies/minIni/dev/minIni.h
     dependencies/minIni/dev/minIni.c
-    dependencies/getopt-for-windows/getopt.h
-    dependencies/getopt-for-windows/getopt.c
+    ${IZ_GETOPT_DEPENDENCIES}
     src/packages/game/output/video/IZ_video.h
     src/packages/game/output/video/IZ_video.c
     src/packages/common/IZ_common.h

README.md

@@ -20,11 +20,25 @@ A run-and-gun shooter inspired by Metal Slug.
 
 1. Clone this repo.
 2. Clone the repositories under `dependencies.txt`, including SDL2.
-3. Build the SDL, SDL_image, and SDL_ttf dependencies using the [build instructions for macOS](https://wiki.libsdl.org/SDL2/Installation#macos).
-   > **Note:** You may need to download other tools to build the libraries.
-
-   > **Note:** Clone the submodules under SDL_ttf to download freetype and harfbuzz
-4. Build the following dependencies first:
-    - `portmidi`
-    - `libwebsockets` (follow the [instructions on building LWS](https://libwebsockets.org/lws-api-doc-master/html/md_README_8build.html))
-5. Build via CMake.
+3. Build the SDL, SDL_image, and SDL_ttf dependencies using the [build instructions for Linux/UNIX](https://wiki.libsdl.org/SDL2/Installation#linuxunix)
+   or [build instructions for macOS](https://wiki.libsdl.org/SDL2/Installation#macos).
+   > **Note:** You may need to download other tools to build the libraries:
+   > - autoconf
+   > - make
+
+   > **Note:** Clone the submodules under SDL_ttf to download freetype and harfbuzz:
+   >
+   > ```shell
+   > git submodule update --init --recursive
+   > ```
+4. For OpenSSL, simply run:
+   ```shell
+   ./Configure
+   make
+   make test
+   ```
+5. Build the following dependencies first:
+   - `portmidi` (Linux needs [ALSA libraries](https://www.alsa-project.org/files/pub/lib/) to be compiled)
+     - ALSA Lib requires `libtool` to be compiled.
+   - `libwebsockets` (follow the [instructions on building LWS](https://libwebsockets.org/lws-api-doc-master/html/md_README_8build.html))
+6. Build via CMake.

dependencies.txt

@@ -10,3 +10,4 @@ https://libwebsockets.org/repo/libwebsockets
 https://github.com/openssl/openssl
 https://www.sqlite.org/download.html (use SQLite amalgamated source code, unpack into `sqlite` directory)
 https://code.modal.sh/TheoryOfNekomata/bdd-for-c-mocks
+git://git.alsa-project.org/alsa-lib.git (linux/unix)

src/packages/compat/IZ_windows.h

@@ -3,6 +3,7 @@
 
 #ifndef IZ_WINDOWS
 typedef int errno_t;
+typedef unsigned int rsize_t;
 #else
 #include <io.h>
 #include <SDL_syswm.h>

src/packages/game/IZ_app_input.c

@@ -4,6 +4,10 @@
 	#define IZ_DEBUG_CONNECT SDLK_PAGEUP
 	#define IZ_DEBUG_DISCONNECT SDLK_PAGEDOWN
 	#define IZ_DEBUG_SEND_MESSAGE SDLK_INSERT
+#elif IZ_UNIX
+    #define IZ_DEBUG_CONNECT SDLK_PAGEUP
+    #define IZ_DEBUG_DISCONNECT SDLK_PAGEDOWN
+    #define IZ_DEBUG_SEND_MESSAGE SDLK_INSERT
 #elif IZ_MACOS
 	#define IZ_DEBUG_CONNECT SDLK_EQUALS
 	#define IZ_DEBUG_DISCONNECT SDLK_MINUS

src/packages/game/output/video/IZ_video.c

@@ -87,6 +87,7 @@ IZ_ProcedureResult IZ_VideoInitialize(IZ_VideoState* state, void* user_data, con
 		IZ_LogError("video", "Window could not be created! Reason: %s", SDL_GetError());
 		return -3;
 	}
+    SDL_ShowWindow(window);
 	state->window = window;
 	state->renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
 	return 0;

src/packages/io/IZ_io.c

@@ -47,13 +47,8 @@ bool IZ_isdir(const char* path) {
 	struct stat s;
 	int err = stat("/path/to/possible_dir", &s);
 	if(-1 == err) {
-    if(ENOENT == errno) {
         return false;
-    }
-		perror("stat");
-		exit(1);\
-    return;
 	}
-	return (S_ISDIR(s.st_mode))
+	return (S_ISDIR(s.st_mode));
 #endif
 }

src/packages/io/IZ_io.h

@@ -5,6 +5,9 @@
 #include <stdbool.h>
 #include <stdarg.h>
 #include "../compat/IZ_windows.h"
+#ifdef IZ_UNIX
+#include <sys/stat.h>
+#endif
 
 int IZ_sprintf(char*, size_t, const char*, ...);
 

src/packages/log/IZ_log.h

@@ -21,6 +21,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <time.h>
+#include <stdlib.h>
 #include "../timer/IZ_timer.h"
 #include "../io/IZ_io.h"
 #include "../stdinc/IZ_string.h"