From f88ab2affc7b1a4c91278444c80977b83b2556cb Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Thu, 13 Jul 2023 22:44:40 +0100
Subject: Add intro screen

---
 src/data.h |  3 +++
 src/game.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+)

(limited to 'src')

diff --git a/src/data.h b/src/data.h
index 39b3da9..29377cb 100644
--- a/src/data.h
+++ b/src/data.h
@@ -10,6 +10,9 @@ extern const uint8_t binary_tiles_start[];
 extern const uint8_t binary_font_start[];
 extern const uint8_t binary_title_start[];
 
+/* intro map */
+extern const uint8_t binary_intro_start[];
+
 /* maps */
 extern const uint8_t binary_stage01_start[];
 extern const uint8_t binary_stage02_start[];
diff --git a/src/game.c b/src/game.c
index 85fb050..7fe6d78 100644
--- a/src/game.c
+++ b/src/game.c
@@ -110,6 +110,67 @@ static void hud_render()
     hud = HUD_CLEAN;
 }
 
+#define WALK_DELAY 8
+#define WALK_CYCLE_FRAMES 4
+
+static const Rect intro_frames[WALK_CYCLE_FRAMES] =
+{
+    /* walk cycle */
+    { 0, 0, 144, 144 },
+    { 16, 0, 144, 144 },
+    { 0, 0, 144, 144 },
+    { 32, 0, 144, 144 },
+};
+
+static void run_intro()
+{
+    /* for the HUD */
+    pickaxe = 0;
+    time = GAME_TIME_MAX;
+    hud = HUD_ALL;
+
+    blit_target(TARGET_BUFFER);
+    blit_erase(0);
+
+    map_init(binary_intro_start);
+
+    map_render();
+    hud_render();
+    put_text(88, 65, "GET ALL THAT GOLD!", 1);
+
+    wait_vsync();
+    blit_copy_all();
+
+    Rect dst = { 80, 88 + MAP_OFFS_Y, 16, 16 };
+    uint8_t frame = 0, delay = 0;
+
+    wait_frames(32);
+
+    blit_target(TARGET_SCREEN);
+    while (dst.x < 224)
+    {
+        wait_vsync();
+        blit_copy16(&dst);
+        dst.x++;
+        if (map_update_gold(dst.x + 8, dst.y + 15 - MAP_OFFS_Y))
+            sound_play_efx(EFX_GOLD);
+        blitrc(binary_sprites_start, &intro_frames[frame], &dst);
+
+        if (delay++ == WALK_DELAY)
+        {
+            delay = 0;
+            frame++;
+            if (frame == WALK_CYCLE_FRAMES)
+                frame = 0;
+        }
+    }
+
+    wait_vsync();
+    blit_copy16(&dst);
+
+    wait_frames(64);
+}
+
 static void run_gameover()
 {
     wait_vsync();
@@ -167,6 +228,8 @@ void run_game()
     score = 0;
     stage = 0;
 
+    run_intro();
+
 next_stage:
     pause = 0;
     gameover = 0;
-- 
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