# Gamnit display implementation for GNU/Linux using `egl`, `sdl` and `x11`
module display_linux
-import sdl
-import x11
+import sdl2::image
+import sdl2::mixer
import egl # local to gamnit
intrude import display
fun height=(value: Int) do requested_height = value
private var requested_height = 1080
- # Setup SDL, X11, EGL in order
+ redef fun show_cursor do return sdl.show_cursor
+
+ redef fun show_cursor=(val) do sdl.show_cursor = val
+
+ # Setup SDL, wm, EGL in order
redef fun setup
do
if debug_gamnit then print "Setting up SDL"
- self.sdl_display = setup_sdl(requested_width, requested_height)
+ self.sdl_window = setup_sdl(requested_width, requested_height)
- if debug_gamnit then print "Setting up X11"
- var x11_display = setup_x11
- var window_handle = window_handle
- setup_egl_display x11_display
+ if debug_gamnit then print "Setting up window manager"
+ setup_egl_display sdl_window.wm_info.display_handle
if debug_gamnit then print "Setting up EGL context"
- select_egl_config(8, 8, 8, 8, 8, 0, 0)
- setup_egl_context window_handle
+ select_egl_config(red_bits, green_bits, blue_bits, 8, 8, 0, 0)
+ setup_egl_context sdl_window.wm_info.window_handle
end
# Close EGL and SDL in reverse order of `setup` (nothing to do for X11)
# SDL
# The SDL display managing the window and events
- var sdl_display: SDLDisplay is noautoinit
+ var sdl_window: SDLWindow is noautoinit
+
+ # Title of the window, must be set before creating the window (or redef)
+ var window_title = "gamnit game" is lazy, writable
# Setup the SDL display and lib
- fun setup_sdl(window_width, window_height: Int): SDLDisplay
+ fun setup_sdl(window_width, window_height: Int): SDLWindow
do
- var sdl_display = new SDLDisplay(window_width, window_height)
- assert not sdl_display.address_is_null else print "Opening SDL display failed"
- return sdl_display
- end
+ assert sdl.initialize((new SDLInitFlags).video.audio) else
+ print_error "Failed to initialize SDL2: {sdl.error}"
+ end
- # Close the SDL display
- fun close_sdl do sdl_display.destroy
+ var img_flags = (new SDLImgInitFlags).png.jpg
+ assert sdl.img.initialize(img_flags) == img_flags else
+ print_error "Failed to initialize SDL2 IMG: {sdl.error}"
+ end
- # Get a native handle to the current SDL window
- fun window_handle: Pointer
- do
- var sdl_wm_info = new SDLSystemWindowManagerInfo
- return sdl_wm_info.x11_window_handle
+ var sdl_window = new SDLWindow(window_title.to_cstring, window_width, window_height, sdl_window_flags)
+ assert not sdl_window.address_is_null else
+ print_error "Failed to create SDL2 window: {sdl.error}"
+ end
+
+ # Audio support
+ var inited = mix.initialize(mix_init_flags)
+ assert inited != mix_init_flags else
+ print_error "Failed to load SDL2 mixer format supports: {mix.error}"
+ end
+
+ var opened = mix.open_audio(44100, mix.default_format, 2, 1024)
+ assert opened else
+ print_error "Failed to initialize SDL2 mixer: {mix.error}"
+ end
+
+ return sdl_window
end
- # ---
- # X11
+ # SDL2 window initialization flags
+ #
+ # The default value supports OpenGL and window resizing.
+ var sdl_window_flags: SDLWindowFlags = (new SDLWindowFlags).opengl.resizable is lazy, writable
- # Get a native handle to the current X11 display
- fun setup_x11: Pointer
+ # SDL2 mixer initialization flags
+ #
+ # Defaults to all available formats.
+ var mix_init_flags: MixInitFlags = mix.flac | mix.mod | mix.mp3 | mix.ogg is lazy, writable
+
+ # Close the SDL display
+ fun close_sdl
do
- var x11_display = x_open_default_display
- assert not x11_display.address_is_null else print "Opening X11 display failed"
- return x11_display
+ sdl_window.destroy
+ mix.close_audio
+ mix.quit
+ sdl.finalize
end
end
-redef class GamnitAssetTexture
+redef class TextureAsset
redef fun load_from_platform
do
- var path = "assets" / path # TODO use app.assets_dir
- var sdl_tex = new SDLImage.from_file(path)
+ var path = "assets" / path
- if sdl_tex.address_is_null then
+ var surface = new SDLSurface.load(path.to_cstring)
+ if surface.address_is_null then
error = new Error("Failed to load texture at '{path}'")
return
end
- self.width = sdl_tex.width.to_f
- self.height = sdl_tex.height.to_f
- var format = if sdl_tex.amask > 0 then gl_RGBA else gl_RGB
- var pixels = sdl_tex.pixels
+ self.width = surface.w.to_f
+ self.height = surface.h.to_f
+ var format = if surface.format.amask > 0u32 then gl_RGBA else gl_RGB
+ var pixels = surface.pixels
- load_from_pixels(pixels, sdl_tex.width, sdl_tex.height, format)
+ load_from_pixels(pixels, surface.w, surface.h, format)
end
end
nitlanguage / nit.git / blobdiff