Add a working Cmake setup

This will compile SDL libraries, dependencies, nene itself and the collisions.c example.

CMakeLists.txt

@@ -0,0 +1,26 @@
+# Copyright (c) 2021-present André Luiz Alvares
+# Nene is licensed under the Zlib license.
+# Please refer to the LICENSE file for details
+# SPDX-License-Identifier: Zlib
+
+# Set minimum cmake version, this should go until the latest available release,
+# the first version it's still to be decided though, but it shouldn't be older than the one used by SDL's CMakeLists.
+cmake_minimum_required(VERSION 3.15-3.26)
+
+# Set the project name, version and language
+project(
+  nene
+  VERSION 0.4
+  LANGUAGES C
+)
+
+# set the C standard, be sure to review compile_flags.txt file too.
+set(CMAKE_C_STANDARD_REQUIRED 99)
+
+add_library(${PROJECT_NAME} STATIC)
+
+# add the src and external directories on the building procedure
+add_subdirectory(external)
+add_subdirectory(src)
+add_subdirectory(examples/c)
+

compile_flags.txt

@@ -3,3 +3,7 @@
 -Wpedantic
 -std=c99
 -I./include/
+-I./external/SDL/include
+-I./external/SDL_mixer/include
+-I./external/SDL_image
+-I./external/SDL_ttf

examples/c/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright (c) 2021-present André Luiz Alvares
+# Nene is licensed under the Zlib license.
+# Please refer to the LICENSE file for details
+# SPDX-License-Identifier: Zlib
+
+add_executable(nene_c_collisions collisions.c)
+
+target_link_libraries(nene_c_collisions nene)
+

external/CMakeLists.txt

@@ -0,0 +1,24 @@
+# Copyright (c) 2021-present André Luiz Alvares
+# Nene is licensed under the Zlib license.
+# Please refer to the LICENSE file for details
+# SPDX-License-Identifier: Zlib
+
+# This cmake file add the "external_libs" library target, with all external modules (that is, SDL libraries)
+
+# Adds the SDL subdirectories, which are git sub-modules,
+# be sure to clone nene with "recurse-submodules" flag, otherwise the SDL
+# libraries will not be clonned with nene.
+add_subdirectory(SDL)
+add_subdirectory(SDL_image)
+add_subdirectory(SDL_mixer)
+add_subdirectory(SDL_ttf)
+
+# creating the "external_libs" library target
+add_library(external_libs INTERFACE)
+
+# adding linking to the SDL libraries to the project build.
+target_link_libraries(${PROJECT_NAME} INTERFACE SDL2::SDL2)
+target_link_libraries(${PROJECT_NAME} INTERFACE SDL2_image::SDL2_image)
+target_link_libraries(${PROJECT_NAME} INTERFACE SDL2_mixer::SDL2_mixer)
+target_link_libraries(${PROJECT_NAME} INTERFACE SDL2_ttf::SDL2_ttf)
+

include/nene/audio/music.h

@@ -10,7 +10,7 @@ SPDX-License-Identifier: Zlib
 
 #include <stdbool.h>
 #include <stdint.h>
-#include <SDL2/SDL_mixer.h>
+#include <SDL_mixer.h>
 
 typedef struct nene_Music {
   Mix_Music *raw;

include/nene/audio/sound.h

@@ -10,7 +10,7 @@ SPDX-License-Identifier: Zlib
 
 #include <stdint.h>
 #include <stdbool.h>
-#include <SDL2/SDL_mixer.h>
+#include <SDL_mixer.h>
 
 typedef struct nene_Sound {
   Mix_Chunk *raw;

include/nene/color.h

@@ -9,7 +9,7 @@ SPDX-License-Identifier: Zlib
 #define NENE_COLOR_H
 
 #include <stdbool.h>
-#include <SDL2/SDL.h>
+#include <SDL.h>
 
 /// Alias to SDL_color
 typedef SDL_Color nene_Color;

include/nene/core.h

@@ -9,7 +9,7 @@ SPDX-License-Identifier: Zlib
 #define NENE_CORE_H
 
 #include <stdbool.h>
-#include <SDL2/SDL.h>
+#include <SDL.h>
 #include "nene/config.h"
 #include "nene/math/vec2.h"
 #include "nene/math/vec2i.h"

include/nene/font.h

@@ -10,7 +10,7 @@ SPDX-License-Identifier: Zlib
 
 #include <stdint.h>
 #include <stdbool.h>
-#include <SDL2/SDL_ttf.h>
+#include <SDL_ttf.h>
 #include "nene/math/vec2i.h"
 #include "nene/texture.h"
 #include "nene/color.h"

include/nene/math/rect.h

@@ -9,7 +9,7 @@ SPDX-License-Identifier: Zlib
 #define NENE_RECT_H
 
 #include <stdbool.h>
-#include <SDL2/SDL.h>
+#include <SDL.h>
 
 #include "nene/math/vec2i.h"
 

include/nene/math/rectf.h

@@ -9,7 +9,7 @@ SPDX-License-Identifier: Zlib
 #define NENE_RECTF_H
 
 #include <stdbool.h>
-#include <SDL2/SDL.h>
+#include <SDL.h>
 
 #include "nene/math/vec2.h"
 #include "nene/math/rect.h"

include/nene/texture.h

@@ -10,7 +10,7 @@ SPDX-License-Identifier: Zlib
 
 #include <stdint.h>
 #include <stdbool.h>
-#include <SDL2/SDL.h>
+#include <SDL.h>
 
 #include "nene/math/vec2.h"
 #include "nene/math/rect.h"

src/CMakeLists.txt

@@ -0,0 +1,38 @@
+# Copyright (c) 2021-present André Luiz Alvares
+# Nene is licensed under the Zlib license.
+# Please refer to the LICENSE file for details
+# SPDX-License-Identifier: Zlib
+
+target_sources(${PROJECT_NAME} PUBLIC
+  core.c
+  texture.c
+  font.c
+  texture_atlas.c
+  audio/music.c
+  audio/sound.c
+  math/vec2i.c
+  math/vec2.c
+  math/rect.c
+  math/rectf.c
+  math/grid.c
+  math/segment.c
+  math/shape.c
+  intersections.c
+  collision.c
+  animation.c
+  tilemap.c
+  color.c
+)
+
+# # add the nene include directory
+target_include_directories(${PROJECT_NAME} PUBLIC ${PROJECT_SOURCE_DIR}/include)
+
+# # add the sdl include directories (NOTE: remove these once the (game) usage of SDL get's unnecessary)
+target_include_directories(${PROJECT_NAME} PUBLIC ${PROJECT_SOURCE_DIR}/external/SDL/include)
+target_include_directories(${PROJECT_NAME} PUBLIC ${PROJECT_SOURCE_DIR}/external/SDL_mixer/include)
+target_include_directories(${PROJECT_NAME} PUBLIC ${PROJECT_SOURCE_DIR}/external/SDL_image)
+target_include_directories(${PROJECT_NAME} PUBLIC ${PROJECT_SOURCE_DIR}/external/SDL_ttf)
+
+# add linking to the external dependencies (SDL libraries) to the target
+target_link_libraries(${PROJECT_NAME} PUBLIC external_libs)
+target_link_libraries(${PROJECT_NAME} PUBLIC m)

src/audio/music.c

@@ -6,7 +6,7 @@ SPDX-License-Identifier: Zlib
 */
 
 #include "nene/audio/music.h"
-#include "SDL2/SDL.h"
+#include <SDL.h>
 
 Mix_Music *nene_Music_get_raw(nene_Music music) {
   SDL_assert(music.raw != NULL);

src/audio/sound.c

@@ -6,7 +6,7 @@ SPDX-License-Identifier: Zlib
 */
 
 #include "nene/audio/sound.h"
-#include <SDL2/SDL.h>
+#include <SDL.h>
 
 Mix_Chunk *nene_Sound_get_raw(nene_Sound sound) {
   SDL_assert(sound.raw != NULL);

src/core.c

@@ -5,11 +5,11 @@ Please refer to the LICENSE file for details
 SPDX-License-Identifier: Zlib
 */
 
-#include <SDL2/SDL.h>
-#include <SDL2/SDL_events.h>
-#include <SDL2/SDL_image.h>
-#include <SDL2/SDL_ttf.h>
-#include <SDL2/SDL_mixer.h>
+#include <math.h>
+#include <SDL_events.h>
+#include <SDL_image.h>
+#include <SDL_ttf.h>
+#include <SDL_mixer.h>
 #include "nene/core.h"
 #include <stdio.h>
 

src/font.c

@@ -5,7 +5,7 @@ Please refer to the LICENSE file for details
 SPDX-License-Identifier: Zlib
 */
 
-#include <SDL2/SDL.h>
+#include <SDL.h>
 #include "nene/font.h"
 #include "nene/core.h"
 

src/texture.c

@@ -5,8 +5,8 @@ Please refer to the LICENSE file for details
 SPDX-License-Identifier: Zlib
 */
 
-#include <SDL2/SDL_image.h>
-#include <SDL2/SDL_render.h>
+#include <SDL_image.h>
+#include <SDL_render.h>
 #include "nene/texture.h"
 #include "nene/core.h"