Mercurial > hg > ascension / changeset

     1.1 --- a/src/ascension/context.h	Thu Apr 18 21:53:53 2024 +0200
     1.2 +++ b/src/ascension/context.h	Thu Apr 18 22:53:55 2024 +0200
     1.3 @@ -52,10 +52,11 @@
     1.4      CxBuffer error_buffer;
     1.5      AscInput input;
     1.6      AscWindow windows[ASC_MAX_WINDOWS];
     1.7 -    AscWindow *active_window;
     1.8 +    // TODO: rework how fonts are cached
     1.9      AscFont fonts[ASC_MAX_FONTS];
    1.10 -    unsigned int fonts_loaded;
    1.11 -    AscFont const *active_font;
    1.12 +    unsigned char fonts_loaded;
    1.13 +    unsigned char active_window;
    1.14 +    unsigned char active_font;
    1.15      asc_col4i ink;
    1.16      uint64_t frame_nanos;
    1.17      uint64_t total_nanos;
    1.18 @@ -64,6 +65,29 @@
    1.19  /** Global ascension context. */
    1.20  extern AscContext asc_context;
    1.21  
    1.22 +/**
    1.23 + * The currently active font.
    1.24 + * @see asc_font()
    1.25 + */
    1.26 +#define asc_active_font \
    1.27 +    (&asc_context.fonts[asc_context.active_font])
    1.28 +
    1.29 +/**
    1.30 + * The currently active window in the context.
    1.31 + * @see asc_window_activate()
    1.32 + */
    1.33 +#define asc_active_window \
    1.34 +    (&asc_context.windows[asc_context.active_window])
    1.35 +
    1.36 +static inline bool asc_assert_active_window() {
    1.37 +    if (asc_context.active_window < ASC_MAX_WINDOWS) {
    1.38 +        return true;
    1.39 +    } else {
    1.40 +        asc_error("A graphics operation was performed without active window");
    1.41 +        return false;
    1.42 +    }
    1.43 +}
    1.44 +
    1.45  void asc_context_initialize(void);
    1.46  void asc_context_destroy(void);
    1.47  
    1.48 @@ -86,10 +110,5 @@
    1.49  #define asc_ink_rgba(r,g,b,a) asc_context.ink = (asc_col4i){(r),(g),(b),(a)}
    1.50  #define asc_ink_rgb(r,g,b) asc_context.ink = (asc_col4i){(r),(g),(b),255u}
    1.51  
    1.52 -/**
    1.53 - * Sets the active drawing font.
    1.54 - */
    1.55 -#define asc_set_font(font) asc_context.active_font = (font)
    1.56 -
    1.57  #endif /* ASCENSION_CONTEXT_H */
    1.58  

     2.1 --- a/src/ascension/input.h	Thu Apr 18 21:53:53 2024 +0200
     2.2 +++ b/src/ascension/input.h	Thu Apr 18 22:53:55 2024 +0200
     2.3 @@ -45,4 +45,12 @@
     2.4  #define asc_key_pressed(scancode) \
     2.5      (asc_context.input.keys[SDL_SCANCODE_##scancode])
     2.6  
     2.7 +#define asc_mouse_x asc_context.input.mouse_x
     2.8 +#define asc_mouse_y asc_context.input.mouse_y
     2.9 +#define asc_mouse_pos (asc_vec2i) {asc_mouse_x, asc_mouse_y}
    2.10 +
    2.11 +#define asc_mouse_move_x asc_context.input.mouse_xrel
    2.12 +#define asc_mouse_move_y asc_context.input.mouse_yrel
    2.13 +#define asc_mouse_move (asc_vec2i) {asc_mouse_move_x, asc_mouse_move_y}
    2.14 +
    2.15  #endif //ASCENSION_INPUT_H

     3.1 --- a/src/ascension/ui.h	Thu Apr 18 21:53:53 2024 +0200
     3.2 +++ b/src/ascension/ui.h	Thu Apr 18 22:53:55 2024 +0200
     3.3 @@ -31,7 +31,7 @@
     3.4  #include "ui/text.h"
     3.5  
     3.6  #define asc_add_ui_node(node) \
     3.7 -    asc_scene_node_link(asc_window_active->ui, node)
     3.8 +    asc_scene_node_link(asc_active_window->ui, node)
     3.9  
    3.10  #endif /* ASCENSION_UI_H */
    3.11  

     4.1 --- a/src/ascension/ui/font.h	Thu Apr 18 21:53:53 2024 +0200
     4.2 +++ b/src/ascension/ui/font.h	Thu Apr 18 22:53:55 2024 +0200
     4.3 @@ -52,43 +52,25 @@
     4.4       */
     4.5      int size;
     4.6      /**
     4.7 +     * TODO: remove from public struct
     4.8       * Pointer to the SDL TTF font structure.
     4.9       */
    4.10      TTF_Font *ptr;
    4.11  } AscFont;
    4.12  
    4.13  /**
    4.14 - * Loads a font with the given style and size.
    4.15 + * Activates a font with the given style and size.
    4.16   *
    4.17 - * The font is cached and returned faster the next time you call this
    4.18 + * The font is cached and activated faster the next time you call this
    4.19   * function with the same arguments. However, when you reach the maximum
    4.20   * number of fonts, the cache is completely cleared and rebuilt.
    4.21   *
    4.22   * That means in general, that you should not be using too many fonts of
    4.23 - * different sizes at the same time, and you should not keep the pointer
    4.24 - * returned by this function too long, because you would risking cache misses.
    4.25 + * different sizes at the same time.
    4.26   *
    4.27   * @param style the style
    4.28   * @param size the point size
    4.29 - * @return a pointer to the font structure (do not free)
    4.30   */
    4.31 -AscFont const *asc_font(enum AscFontStyle style, int size);
    4.32 -
    4.33 -/**
    4.34 - * Unloads all cached fonts from the context.
    4.35 - */
    4.36 -void asc_font_cache_clear(void);
    4.37 -
    4.38 -/**
    4.39 - * Checks, if the font is still loaded and reloads it, if required.
    4.40 - *
    4.41 - * There is no need to call this function manually. Every Ascension function
    4.42 - * that you pass a font will do that for you and use the returned pointer in
    4.43 - * case of a cache miss.
    4.44 - *
    4.45 - * @param font the font to validate
    4.46 - * @return \p font, or a pointer to the new location of the loaded font
    4.47 - */
    4.48 -AscFont const *asc_font_cache_validate(AscFont const *font);
    4.49 +void asc_font(enum AscFontStyle style, int size);
    4.50  
    4.51  #endif //ASCENSION_FONT_H

     5.1 --- a/src/ascension/ui/text.h	Thu Apr 18 21:53:53 2024 +0200
     5.2 +++ b/src/ascension/ui/text.h	Thu Apr 18 22:53:55 2024 +0200
     5.3 @@ -38,7 +38,7 @@
     5.4  typedef struct AscText {
     5.5      extend_asc_scene_node;
     5.6      cxmutstr text;
     5.7 -    AscFont const *font;
     5.8 +    AscFont font;
     5.9      asc_col4i color;
    5.10      unsigned short max_width;
    5.11      unsigned short offx;

     6.1 --- a/src/ascension/window.h	Thu Apr 18 21:53:53 2024 +0200
     6.2 +++ b/src/ascension/window.h	Thu Apr 18 22:53:55 2024 +0200
     6.3 @@ -56,12 +56,6 @@
     6.4  } AscWindow;
     6.5  
     6.6  /**
     6.7 - * The currently active window in the context.
     6.8 - * @see asc_window_activate()
     6.9 - */
    6.10 -#define asc_window_active asc_context.active_window
    6.11 -
    6.12 -/**
    6.13   * Initializes the settings structure with default values.
    6.14   *
    6.15   * @param settings an uninitialized settings object
    6.16 @@ -78,31 +72,33 @@
    6.17   *
    6.18   * @param index the index of the new window
    6.19   * @param settings the settings to be used for initialization
    6.20 - * @return a pointer to the window data or \c NULL if initialization failed
    6.21   */
    6.22 -AscWindow *asc_window_initialize(unsigned int index, AscWindowSettings const* settings);
    6.23 +void asc_window_initialize(unsigned int index, AscWindowSettings const* settings);
    6.24  
    6.25  /**
    6.26   * Destroys the window and its OpenGL context.
    6.27   *
    6.28 - * When this window is currently active, there will be \em no active window afterwards.
    6.29 + * When this window is currently active, there
    6.30 + * will be \em no active window afterwards.
    6.31   *
    6.32   * Still alive windows will also be destroyed by asc_context_destroy()
    6.33   * automatically.
    6.34   *
    6.35 - * @param window the window
    6.36 + * @param index the index of the window
    6.37   */
    6.38 -void asc_window_destroy(AscWindow* window);
    6.39 +void asc_window_destroy(unsigned int index);
    6.40  
    6.41  /**
    6.42   * Swaps buffers and adjusts the viewport to the current window size.
    6.43   *
    6.44 - * This function is automatically invoked for all initialized windows
    6.45 - * by asc_loop_next(). You usually do not need to call this function manually.
    6.46 + * This function is automatically invoked by asc_loop_next().
    6.47 + * You usually should not call this function manually.
    6.48   *
    6.49 - * @param window the window
    6.50 + * If this function is invoked on a non-initialized window, nothing happens.
    6.51 + *
    6.52 + * @param index the index of the window
    6.53   */
    6.54 -void asc_window_sync(AscWindow *window);
    6.55 +void asc_window_sync(unsigned int index);
    6.56  
    6.57  /**
    6.58   * Switches the active window.
    6.59 @@ -110,9 +106,9 @@
    6.60   * In particular that makes the corresponding OpenGL context "current".
    6.61   * When you only want to draw into one window, you'll never need this.
    6.62   *
    6.63 - * @param the window to activate
    6.64 + * @param index the index of the window
    6.65   */
    6.66 -void asc_window_activate(AscWindow *window);
    6.67 +void asc_window_activate(unsigned int index);
    6.68  
    6.69  #endif /* ASCENSION_WINDOW_H */
    6.70  

     7.1 --- a/src/context.c	Thu Apr 18 21:53:53 2024 +0200
     7.2 +++ b/src/context.c	Thu Apr 18 22:53:55 2024 +0200
     7.3 @@ -47,6 +47,10 @@
     7.4          return;
     7.5      memset(&asc_context, 0, sizeof(AscContext));
     7.6  
     7.7 +    // nothing is active right after initialization
     7.8 +    asc_context.active_window = ASC_MAX_WINDOWS;
     7.9 +    asc_context.active_font = ASC_MAX_FONTS;
    7.10 +
    7.11      // initialize error buffer
    7.12      cxBufferInit(
    7.13              &asc_context.error_buffer,
    7.14 @@ -72,9 +76,9 @@
    7.15  
    7.16  void asc_context_destroy(void) {
    7.17      for (unsigned int i = 0 ; i < ASC_MAX_WINDOWS ; i++) {
    7.18 -        asc_window_destroy(&asc_context.windows[i]);
    7.19 +        asc_window_destroy(i);
    7.20      }
    7.21 -    asc_font_cache_clear();
    7.22 +    // TODO: fix that fonts are currently leaking by reworking the font cache
    7.23  
    7.24      // quit SDL
    7.25      if (TTF_WasInit())
    7.26 @@ -143,9 +147,7 @@
    7.27  
    7.28      // sync the windows
    7.29      for (unsigned int i = 0 ; i < ASC_MAX_WINDOWS ; i++) {
    7.30 -        if (asc_context.windows[i].id > 0) {
    7.31 -            asc_window_sync(&asc_context.windows[i]);
    7.32 -        }
    7.33 +        asc_window_sync(i);
    7.34      }
    7.35  
    7.36      // compute frame time

     8.1 --- a/src/font.c	Thu Apr 18 21:53:53 2024 +0200
     8.2 +++ b/src/font.c	Thu Apr 18 22:53:55 2024 +0200
     8.3 @@ -43,17 +43,19 @@
     8.4      }
     8.5  }
     8.6  
     8.7 -AscFont const *asc_font(enum AscFontStyle style, int size) {
     8.8 +void asc_font(enum AscFontStyle style, int size) {
     8.9      for (unsigned int i = 0 ; i < asc_context.fonts_loaded ; i++) {
    8.10          AscFont *font = &asc_context.fonts[i];
    8.11          if (font->size == size && font->style == style) {
    8.12 -            return font;
    8.13 +            asc_context.active_font = i;
    8.14 +            return;
    8.15          }
    8.16      }
    8.17  
    8.18      if (asc_context.fonts_loaded == ASC_MAX_FONTS) {
    8.19 -        asc_dprintf("WARNING: Maximum number of fonts reached, wiping cache!");
    8.20 -        asc_font_cache_clear();
    8.21 +        asc_error("Too many fonts. Cannot load more until cache is repaired.");
    8.22 +        asc_context.active_font = ASC_MAX_FONTS;
    8.23 +        return;
    8.24      }
    8.25  
    8.26      unsigned int slot = asc_context.fonts_loaded++;
    8.27 @@ -64,27 +66,8 @@
    8.28      if (font->ptr == NULL) {
    8.29          asc_context.fonts_loaded--;
    8.30          asc_error(TTF_GetError());
    8.31 -        return NULL;
    8.32 -    }
    8.33 -    asc_dprintf("Loaded font size %u, style %u in slot %u", size, style, slot);
    8.34 -    return font;
    8.35 -}
    8.36 -
    8.37 -void asc_font_cache_clear(void) {
    8.38 -    asc_dprintf("Fonts in cache that are being unloaded: %u", asc_context.fonts_loaded);
    8.39 -    while (asc_context.fonts_loaded > 0) {
    8.40 -        unsigned int i = --asc_context.fonts_loaded;
    8.41 -        AscFont *font = &asc_context.fonts[i];
    8.42 -        TTF_CloseFont(font->ptr);
    8.43 -        font->ptr = NULL;
    8.44 +    } else {
    8.45 +        asc_dprintf("Loaded font size %u, style %u in slot %u", size, style, slot);
    8.46 +        asc_context.active_font = slot;
    8.47      }
    8.48  }
    8.49 -
    8.50 -AscFont const *asc_font_cache_validate(AscFont const *font) {
    8.51 -    if (font->ptr) {
    8.52 -        return font;
    8.53 -    } else {
    8.54 -        asc_dprintf("Cache miss for font size %u, style %u", font->size, font->style);
    8.55 -        return asc_font(font->style, font->size);
    8.56 -    }
    8.57 -}

     9.1 --- a/src/primitives.c	Thu Apr 18 21:53:53 2024 +0200
     9.2 +++ b/src/primitives.c	Thu Apr 18 22:53:55 2024 +0200
     9.3 @@ -87,7 +87,7 @@
     9.4  }
     9.5  
     9.6  void asc_primitives_draw_plane(void) {
     9.7 -    AscMesh const *mesh = &(asc_window_active->glctx.primitives.plane);
     9.8 +    AscMesh const *mesh = &(asc_active_window->glctx.primitives.plane);
     9.9      glBindVertexArray(mesh->vao);
    9.10      glDrawArrays(GL_TRIANGLE_STRIP, 0, mesh->vertices);
    9.11  }
    9.12 \ No newline at end of file

    10.1 --- a/src/scene.c	Thu Apr 18 21:53:53 2024 +0200
    10.2 +++ b/src/scene.c	Thu Apr 18 22:53:55 2024 +0200
    10.3 @@ -151,7 +151,7 @@
    10.4      // Sprites
    10.5      // -------
    10.6      // TODO: implement view matrix for 2D worlds
    10.7 -    shader = &asc_window_active->glctx.shader.sprite.base;
    10.8 +    shader = &asc_active_window->glctx.shader.sprite.base;
    10.9      glUseProgram(shader->id);
   10.10      glUniformMatrix4fv(shader->projection, 1,
   10.11                         GL_FALSE, camera->projection);

    11.1 --- a/src/text.c	Thu Apr 18 21:53:53 2024 +0200
    11.2 +++ b/src/text.c	Thu Apr 18 22:53:55 2024 +0200
    11.3 @@ -36,7 +36,7 @@
    11.4  
    11.5  static void asc_text_draw(AscText const *node) {
    11.6      // Obtain shader
    11.7 -    AscShaderSprite *shader = &asc_window_active->glctx.shader.sprite;
    11.8 +    AscShaderSprite *shader = &asc_active_window->glctx.shader.sprite;
    11.9  
   11.10      // Upload model matrix
   11.11      glUniformMatrix4fv(shader->base.model, 1,
   11.12 @@ -59,7 +59,8 @@
   11.13      }
   11.14  
   11.15      // Render text onto a surface
   11.16 -    TTF_Font *font = asc_font_cache_validate(node->font)->ptr;
   11.17 +    // TODO: obtain TTF_Font from font cache once it is repaired
   11.18 +    TTF_Font *font = node->font.ptr;
   11.19      static int alignments[] = {
   11.20              TTF_WRAPPED_ALIGN_LEFT,
   11.21              TTF_WRAPPED_ALIGN_CENTER,
   11.22 @@ -101,7 +102,7 @@
   11.23      node->base.position.x = (float) args.x;
   11.24      node->base.position.y = (float) args.y;
   11.25      node->max_width = args.max_width;
   11.26 -    node->font = asc_context.active_font;
   11.27 +    node->font = *asc_active_font;
   11.28      node->color = asc_context.ink;
   11.29      if (args.text == NULL) {
   11.30          node->text = cx_mutstr(strdup(" "));

    12.1 --- a/src/window.c	Thu Apr 18 21:53:53 2024 +0200
    12.2 +++ b/src/window.c	Thu Apr 18 22:53:55 2024 +0200
    12.3 @@ -43,16 +43,16 @@
    12.4      settings->title = "Ascended Window";
    12.5  }
    12.6  
    12.7 -AscWindow *asc_window_initialize(unsigned int index, AscWindowSettings const *settings) {
    12.8 +void asc_window_initialize(unsigned int index, AscWindowSettings const *settings) {
    12.9      if (index >= ASC_MAX_WINDOWS) {
   12.10          asc_error("Maximum number of windows exceeded.");
   12.11 -        return NULL;
   12.12 +        return;
   12.13      }
   12.14      AscWindow *window = &asc_context.windows[index];
   12.15      if (window->id > 0) {
   12.16          asc_error("Cannot create window - slot already occupied.");
   12.17          asc_dprintf("Tried to create window with index %u twice", index);
   12.18 -        return NULL;
   12.19 +        return;
   12.20      }
   12.21      if (window->ui != NULL) {
   12.22          asc_dprintf("Window with index %u has a dangling UI pointer", index);
   12.23 @@ -72,7 +72,7 @@
   12.24      );
   12.25      if (window->window == NULL) {
   12.26          asc_error(SDL_GetError());
   12.27 -        return NULL;
   12.28 +        return;
   12.29      }
   12.30  
   12.31      window->id = SDL_GetWindowID(window->window);
   12.32 @@ -85,27 +85,31 @@
   12.33      if (asc_gl_context_initialize(&window->glctx, window->window, &settings->glsettings)) {
   12.34          window->ui = asc_scene_node_empty();
   12.35          asc_dprintf("Window %u initialized", window->id);
   12.36 -        asc_window_active = window;
   12.37 -        return window;
   12.38 +        asc_context.active_window = index;
   12.39      } else {
   12.40          asc_dprintf("Creating GL context failed for window %u", window->id);
   12.41          // cleanup on error
   12.42          SDL_DestroyWindow(window->window);
   12.43          window->window = NULL;
   12.44          window->id = 0;
   12.45 -        return NULL;
   12.46      }
   12.47  }
   12.48  
   12.49 -void asc_window_destroy(AscWindow* window) {
   12.50 +void asc_window_destroy(unsigned int index) {
   12.51      // safeguard
   12.52 -    if (window->id == 0) return;
   12.53 +    if (asc_context.windows[index].id == 0) return;
   12.54  
   12.55      // this window cannot be active anymore
   12.56 -    if (asc_window_active == window) {
   12.57 -        asc_window_active = NULL;
   12.58 +    if (asc_context.active_window == index) {
   12.59 +        asc_context.active_window = ASC_MAX_WINDOWS;
   12.60      }
   12.61  
   12.62 +    // pointer to the window
   12.63 +    AscWindow *window = &asc_context.windows[index];
   12.64 +
   12.65 +    // for releasing OpenGL resources, we need to make the context current
   12.66 +    asc_gl_context_activate(&window->glctx);
   12.67 +
   12.68      // destroy all scenes
   12.69      asc_scene_node_free(window->ui);
   12.70      window->ui = NULL;
   12.71 @@ -119,8 +123,8 @@
   12.72      }
   12.73  
   12.74      // if another window was active, make the other context current again
   12.75 -    if (asc_window_active != NULL) {
   12.76 -        asc_gl_context_activate(&asc_window_active->glctx);
   12.77 +    if (asc_context.active_window < ASC_MAX_WINDOWS) {
   12.78 +        asc_gl_context_activate(&asc_active_window->glctx);
   12.79      }
   12.80  
   12.81      // clean the data
   12.82 @@ -128,15 +132,19 @@
   12.83      memset(window, 0, sizeof(AscWindow));
   12.84  }
   12.85  
   12.86 -void asc_window_sync(AscWindow* window) {
   12.87 -    AscWindow *active_window = asc_window_active;
   12.88 -    if (window != active_window) {
   12.89 -        asc_window_activate(window);
   12.90 +void asc_window_sync(unsigned int index) {
   12.91 +    // necessary safeguard
   12.92 +    if (asc_context.windows[index].id == 0) return;
   12.93 +
   12.94 +    // active the window that shall be synced temporarily
   12.95 +    unsigned int active_index = asc_context.active_window;
   12.96 +    if (index != active_index) {
   12.97 +        asc_window_activate(index);
   12.98      }
   12.99  
  12.100      // Clear the color buffer for the window frame
  12.101 -    int window_width = window->dimensions.width;
  12.102 -    int window_height = window->dimensions.height;
  12.103 +    int window_width = asc_active_window->dimensions.width;
  12.104 +    int window_height = asc_active_window->dimensions.height;
  12.105      glViewport(0, 0, window_width, window_height);
  12.106      glClear(GL_COLOR_BUFFER_BIT);
  12.107      asc_recti viewport = {0, 0, window_width, window_height};
  12.108 @@ -144,20 +152,20 @@
  12.109      // Draw the UI
  12.110      AscCamera ui_camera;
  12.111      asc_camera_ortho(&ui_camera, viewport);
  12.112 -    asc_scene_draw(window->ui, viewport, &ui_camera);
  12.113 +    asc_scene_draw(asc_active_window->ui, viewport, &ui_camera);
  12.114  
  12.115      // Swap Buffers
  12.116 -    SDL_GL_SwapWindow(window->window);
  12.117 +    SDL_GL_SwapWindow(asc_active_window->window);
  12.118  
  12.119      // Clear Flags
  12.120 -    window->resized = false;
  12.121 +    asc_active_window->resized = false;
  12.122  
  12.123 -    if (window != active_window) {
  12.124 -        asc_window_activate(active_window);
  12.125 +    if (index != active_index) {
  12.126 +        asc_window_activate(active_index);
  12.127      }
  12.128  }
  12.129  
  12.130 -void asc_window_activate(AscWindow *window) {
  12.131 -    asc_gl_context_activate(&window->glctx);
  12.132 -    asc_window_active = (AscWindow *)window;
  12.133 +void asc_window_activate(unsigned int index) {
  12.134 +    asc_context.active_window = index;
  12.135 +    asc_gl_context_activate(&asc_active_window->glctx);
  12.136  }

    13.1 --- a/test/snake.c	Thu Apr 18 21:53:53 2024 +0200
    13.2 +++ b/test/snake.c	Thu Apr 18 22:53:55 2024 +0200
    13.3 @@ -47,7 +47,7 @@
    13.4  }
    13.5  
    13.6  static void create_fps_counter(void) {
    13.7 -    asc_set_font(asc_font(ASC_FONT_REGULAR, 24));
    13.8 +    asc_font(ASC_FONT_REGULAR, 24);
    13.9      asc_ink_rgb(255, 0, 0);
   13.10      AscSceneNode* node = asc_text( .x = 10, .y = 10 );
   13.11      asc_scene_add_behavior(node, update_fps_counter);
   13.12 @@ -56,8 +56,8 @@
   13.13  
   13.14  static void update_score_counter(AscSceneNode *node) {
   13.15      // tie to bottom right of the screen
   13.16 -    if (asc_window_active->resized) {
   13.17 -        asc_vec2i bottom_right = asc_window_active->dimensions;
   13.18 +    if (asc_active_window->resized) {
   13.19 +        asc_vec2i bottom_right = asc_active_window->dimensions;
   13.20          asc_vec2i scale = asc_get_scale2d(node);
   13.21          asc_set_position2d(
   13.22                  node,
   13.23 @@ -68,7 +68,7 @@
   13.24  }
   13.25  
   13.26  static void create_score_counter(void) {
   13.27 -    asc_set_font(asc_font(ASC_FONT_BOLD, 14));
   13.28 +    asc_font(ASC_FONT_BOLD, 14);
   13.29      asc_ink_rgb(0, 255, 0);
   13.30      AscSceneNode* node = asc_text(.text = "Score: 0" );
   13.31      asc_scene_add_behavior(node, update_score_counter);
   13.32 @@ -87,7 +87,7 @@
   13.33      AscWindowSettings settings;
   13.34      asc_window_settings_init_defaults(&settings);
   13.35      settings.title = "Snake";
   13.36 -    AscWindow *window = asc_window_initialize(0, &settings);
   13.37 +    asc_window_initialize(0, &settings);
   13.38  
   13.39      // create UI elements
   13.40      create_fps_counter();
   13.41 @@ -98,7 +98,8 @@
   13.42          // quit application on any error
   13.43          if (asc_has_error()) {
   13.44              SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
   13.45 -                    "Fatal Error", asc_get_error(), window->window);
   13.46 +                    "Fatal Error", asc_get_error(),
   13.47 +                    asc_active_window->window);
   13.48              asc_clear_error();
   13.49              asc_context_quit();
   13.50          }