From 478c10a1fb8516b16b6f3d40aba6f8c5385fc16a Mon Sep 17 00:00:00 2001
From: Nipun Garg
Date: Wed, 3 Jul 2019 23:09:40 +0530
Subject: HDB: Unstub aiVortexianAction

---
 engines/hdb/ai-player.cpp | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

(limited to 'engines/hdb/ai-player.cpp')

diff --git a/engines/hdb/ai-player.cpp b/engines/hdb/ai-player.cpp
index 323b308c46..599844be03 100644
--- a/engines/hdb/ai-player.cpp
+++ b/engines/hdb/ai-player.cpp
@@ -1638,7 +1638,36 @@ void aiGooCupInit2(AIEntity *e) {
 }
 
 void aiVortexianAction(AIEntity *e) {
-	warning("STUB: AI: aiVortexianAction required");
+	// anim the alpha blending : down to 32, up to 180, back down...
+	e->value2 += e->value1;
+	if ((e->value2 & 0xff) > 128) {
+		e->value2 = (e->value2 & 0xff00) | 128;
+		e->value1 = -e->value1;
+	} else if ((e->value2 & 0xff) < 32) {
+		e->value2 = (e->value2 & 0xff00) | 32;
+		e->value1 = -e->value1;
+	}
+
+	// anim the shape
+	e->animFrame++;
+	if (e->animFrame >= e->standdownFrames) {
+		e->animFrame = 0;
+
+		// every 4th frame, check for player collision &
+		// do an autosave
+		AIEntity *p = g_hdb->_ai->getPlayer();
+		if (abs(p->x - e->x) < 4 && abs(p->y - e->y) < 4) {
+			if (!(e->value2 & 0xff00)) {
+				// let's make sure we don't autosave every frikken second!
+				e->value2 |= 0xff00;
+
+				g_hdb->saveWhenReady(kAutoSaveSlot);
+				g_hdb->_window->openMessageBar("Saving progress at Vortexian...", 1);
+			}
+		} else
+			e->value2 &= 0x00ff;
+	}
+	e->draw = e->standdownGfx[e->animFrame];
 }
 
 void aiVortexianUse(AIEntity *e) {
-- 
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