Merge pull request 'Add cmake, remove non-standard random' (#2) from neko/csnake:cmake into master

Reviewed-on: https://nakidai.ddns.net/nakidai/csnake/pulls/2
Size of CMake is over 70M :O

CMakeLists.txt

@@ -0,0 +1,23 @@
+cmake_minimum_required(VERSION 3.5)
+project(csnake VERSION 0.1.0 LANGUAGES C)
+
+if(PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
+  message(FATAL_ERROR "In-source builds are not allowed.")
+endif()
+
+add_executable(csnake
+  src/main.c
+  src/screen.c
+  src/input.c
+  src/player.c
+)
+
+set_target_properties(csnake PROPERTIES C_STANDARD 11)
+set_target_properties(csnake PROPERTIES C_EXTENSIONS FALSE)
+target_include_directories(csnake PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include)
+
+set(SIZE 10 CACHE STRING "Size of game field")
+set(DEFX 0 CACHE STRING "Start x")
+set(DEFY 0 CACHE STRING "Start y")
+
+configure_file(include/config.h.in ${CMAKE_CURRENT_SOURCE_DIR}/include/config.h)

include/config.h.in

@@ -0,0 +1,3 @@
+#define SIZE ${SIZE}
+#define DEFX ${DEFX}
+#define DEFY ${DEFY}

src/main.c

@@ -22,7 +22,7 @@ Food generateFood(Player *player)
     Food food;
     do
     {
-        food = (Food){random() % SIZE, random() % SIZE};
+        food = (Food){rand() % SIZE, rand() % SIZE};
     } while (playerCheckFoodCollision(player, food));
     return food;
 }
@@ -34,7 +34,7 @@ void resetCoordinates(void)
 
 int main(int argc, char **argv)
 {
-    srandom(time(NULL));
+    srand(time(NULL));
     Player *player = playerCreate(DOWN, DEFX, DEFY, 0);
     Screen *screen = screenCreate(SIZE, SIZE, ' ');
     PlayerNode *node;