text rendering

1 files changed, 77 insertions, 8 deletions

diff --git a/dc/dc.c b/dc/dc.c
index 0d69710..bccc82f 100644
--- a/dc/dc.c
+++ b/dc/dc.c
@@ -13,6 +13,7 @@
 #define TILE_SIZE 16
 
 struct ty_image img;
+struct ty_font font;
 
 void tick(void)
 {
@@ -59,10 +60,57 @@ void tick(void)
         ty_color(0xFF, 0xF0, 0x80)
     );
 
-    ty_draw_end();
+    ty_draw_text(&font, ty_vec2i(5, SCREEN_HEIGHT - 5 - 8), "hello, world!");
 
     double frame_time = ty_get_time() - start;
-    ty_log_debug("%g ms, %g FPS", frame_time * 1000, 1.0 / frame_time);
+
+    char ms_fmt[] = "%.2g ms";
+    int ms_width = ty_font_width(&font, ms_fmt, frame_time * 1000);
+
+    ty_draw_rect(
+        (struct ty_recti){
+            5, 5,
+            ms_width, 8,
+        },
+        TY_COLOR_BLACK
+    );
+    ty_draw_text_fmt(
+        &font,
+        ty_vec2i(5, 5),
+        ms_fmt,
+        frame_time * 1000
+    );
+
+    char fps_fmt[] = "%4d fps";
+    int fps_width = ty_font_width(&font, fps_fmt, (int)(1.0 / frame_time));
+
+    ty_draw_rect(
+        (struct ty_recti){
+            5, 5 + 8,
+            fps_width, 8,
+        },
+        TY_COLOR_BLACK
+    );
+    ty_draw_text_fmt(
+        &font,
+        ty_vec2i(5, 5 + 8),
+        fps_fmt,
+        (int)(1.0 / frame_time)
+    );
+
+    ty_draw_end();
+}
+
+struct ty_image load_qoi_image(const char *path)
+{
+    qoi_desc desc;
+    void *data = qoi_read(path, &desc, 3);
+    if (!data)
+        ty_log_fatal(TY_ERR_IO, "failed to read image");
+    struct ty_image img = ty_create_image(desc.width, desc.height, data);
+    free(data);
+
+    return img;
 }
 
 int main(void)
@@ -75,21 +123,42 @@ int main(void)
     };
     ty_init(hints);
 
-    qoi_desc desc;
-    void *data = qoi_read("test_img.qoi", &desc, 3);
-    if (!data)
-        ty_log_fatal(TY_ERR_IO, "failed to read image");
-    img = ty_create_image(desc.width, desc.height, data);
-    free(data);
+    img = load_qoi_image("test_img.qoi");
+
+    char font_chars[] = 
+        "abcdefghijklmnopqrstuvwxyz0123456789"
+        "!\"'#$%&()*+,-./@[]\\^_`{}|~:;<>=? "
+    ;
+    struct ty_image font_img = load_qoi_image("font.qoi");
+
+    int glyph_height = 8;
+
+    for (int i = 0; font_chars[i] != '\0'; i++) {
+        struct ty_image glyph = ty_create_image(
+            font_img.width,
+            glyph_height,
+            font_img.data + font_img.width * glyph_height * i
+        );
+
+
+        ty_font_add_glyph(
+            &font,
+            *(uint8_t*)&font_chars[i],
+            glyph
+        );
+    }
 
     while (ty_is_game_running()) {
         int ticks = ty_tick();
         for (int i = 0; i < ticks; i++)
             tick();
+
+        ty_free_temp_allocs();
         // ty_sleep(1000 / hints.ticrate);
     }
 
     ty_free_image(img);
+    ty_free_image(font_img);
 
     ty_deinit();
     return 0;