From 33850b80d294b60e8f25a2f2475d1aa6267122eb Mon Sep 17 00:00:00 2001
From: Nipun Garg
Date: Fri, 7 Jun 2019 22:28:45 +0530
Subject: HDB: Add cacheTile() to load a Tile into memory

---
 engines/hdb/draw-manager.cpp | 23 +++++++++++++++++++++++
 engines/hdb/draw-manager.h   |  1 +
 2 files changed, 24 insertions(+)

diff --git a/engines/hdb/draw-manager.cpp b/engines/hdb/draw-manager.cpp
index 564e178f35..85c313ab14 100644
--- a/engines/hdb/draw-manager.cpp
+++ b/engines/hdb/draw-manager.cpp
@@ -78,6 +78,29 @@ bool DrawMan::init() {
 	return true;
 }
 
+bool DrawMan::cacheTile(int index) {
+
+	if (index < 0) {
+		return false;
+	}
+	if (index > _numTiles) {
+		return false;
+	}
+	if (_tLookupArray[index].skyIndex) {
+		// We don't draw Sky Tiles, so return true
+		return true;
+	}
+
+	if (_tLookupArray[index].tData == NULL) {
+		Common::SeekableReadStream *stream = g_hdb->_fileMan->findFirstData(_tLookupArray[index].filename, TYPE_TILE32);
+		Tile *tile = new Tile;
+		tile->load(stream);
+		_tLookupArray[index].tData = tile;
+	}
+
+	return true;
+}
+
 Picture::~Picture() {
 	_surface.free();
 }
diff --git a/engines/hdb/draw-manager.h b/engines/hdb/draw-manager.h
index 2c651dd816..fac91c78ad 100644
--- a/engines/hdb/draw-manager.h
+++ b/engines/hdb/draw-manager.h
@@ -48,6 +48,7 @@ public:
 	DrawMan();
 
 	bool init();
+	bool cacheTile(int index);
 
 private:
 	int _numTiles;
-- 
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