Intro

intro.c

@@ -0,0 +1,68 @@
+//    Copyright 2025 Bill Rossi
+//    
+//    This file is part of Hanafuda Hachi-Hachi.
+//
+//    Hanafuda Hachi-Hachi is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+//
+//    Hanafuda Hachi-Hachi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License along with Hanafuda Hachi-Hachi. If not, see <https://www.gnu.org/licenses/>. 
+#include <stdlib.h>
+#include "intro.h"
+
+#define FONT_SIZE 36
+
+void display_loading(void) {
+  int window_width = GetRenderWidth(); 
+  int window_height = GetRenderHeight(); 
+  int loading_width = MeasureText("Loading...", FONT_SIZE);
+  BeginDrawing();
+  DrawText("Loading...", window_width - loading_width, window_height - FONT_SIZE, FONT_SIZE, RAYWHITE);
+  EndDrawing();
+}
+
+Intro *load_intro(void) {
+  Intro *i = malloc(sizeof(Intro));
+  i->textures = malloc(sizeof(Texture) * 2);
+
+  Image bgb = LoadImage("img/made_by_bgb.png");
+  i->textures[0] = LoadTextureFromImage(bgb);
+  UnloadImage(bgb);
+
+  Image ray = LoadImage("img/made_w_raylib.png");
+  i->textures[1] = LoadTextureFromImage(ray);
+  UnloadImage(ray);
+
+  i->texture_count = 2;
+  i->timer = 0.;
+  return i;
+}
+
+#define SLIDE_TIME 3.0
+#define FADE_IN_TIME 0.5
+#define FADE_OUT_TIME 0.5
+void intro_display(Intro *intro) {
+  float frame_time, elapsed_time, alpha;
+  for (int i = 0; i < intro->texture_count; i++) {
+    intro->timer = GetTime() + SLIDE_TIME;
+    while((frame_time = GetTime()) < intro->timer) {
+      if (WindowShouldClose()) exit(0);
+      elapsed_time = SLIDE_TIME - (intro->timer - frame_time);
+      if (elapsed_time < FADE_IN_TIME)
+	alpha = ((FADE_IN_TIME - elapsed_time) / FADE_IN_TIME) * 255.;
+      else if (elapsed_time > SLIDE_TIME - FADE_OUT_TIME)
+	alpha = ((elapsed_time - (SLIDE_TIME - FADE_OUT_TIME)) / FADE_OUT_TIME) * 255.;
+      else
+	alpha = 0;
+
+      BeginDrawing();
+      DrawRectangle(0, 0, GetRenderWidth(), GetRenderHeight(), (Color) { 34, 32, 52, 255 });
+      DrawTexture(intro->textures[i],
+		  GetRenderWidth() / 2 - intro->textures->width / 2,
+		  GetRenderHeight() / 2 - intro->textures->height / 2,
+		  WHITE);
+      DrawRectangle(0, 0, GetRenderWidth(), GetRenderHeight(), (Color) { 0, 0, 0, alpha });
+      EndDrawing();
+    }
+  }
+}

intro.h

@@ -0,0 +1,27 @@
+//    Copyright 2025 Bill Rossi
+//    
+//    This file is part of Hanafuda Hachi-Hachi.
+//
+//    Hanafuda Hachi-Hachi is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+//
+//    Hanafuda Hachi-Hachi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+//
+//    You should have received a copy of the GNU General Public License along with Hanafuda Hachi-Hachi. If not, see <https://www.gnu.org/licenses/>. 
+#ifndef _FD_INTRO_
+#define _FD_INTRO_
+
+typedef struct Intro Intro;
+
+#include <raylib.h>
+
+struct Intro {
+  Texture *textures;
+  int texture_count;
+  double timer;
+};
+
+void display_loading(void);
+Intro *load_intro(void);
+void intro_display(Intro *i);
+
+#endif

main.c

@@ -15,6 +15,7 @@
 
 #include <raylib.h>
 
+#include "intro.h"
 #include "game.h"
 
 int main(int argc, char** argv) {
@@ -22,6 +23,12 @@ int main(int argc, char** argv) {
   InitWindow(1400, 900, "Hanafuda Hachi-Hachi");
   SetTargetFPS(60);
 
+  if (!getenv("SKIP_INTRO") || strcmp(getenv("SKIP_INTRO"), "1") != 0) {
+    display_loading();
+    Intro *i = load_intro();
+    intro_display(i);
+  }
+
   Game g;
   initialize_game(&g);