From d655fb5530e2a6ffc23d3a8c3d6009e02eec8fcc Mon Sep 17 00:00:00 2001
From: Le Philousophe
Date: Sun, 10 Mar 2019 00:49:56 +0100
Subject: CRYOMNI3D: Add function to change sprite color

---
 engines/cryomni3d/sprites.cpp | 12 ++++++++++++
 engines/cryomni3d/sprites.h   |  2 ++
 2 files changed, 14 insertions(+)

diff --git a/engines/cryomni3d/sprites.cpp b/engines/cryomni3d/sprites.cpp
index b1c5f95b0e..df09afb24f 100644
--- a/engines/cryomni3d/sprites.cpp
+++ b/engines/cryomni3d/sprites.cpp
@@ -146,6 +146,18 @@ void Sprites::replaceSprite(unsigned int oldSpriteId, unsigned int newSpriteId)
 	_cursors[oldSpriteId]->refCnt++;
 }
 
+void Sprites::replaceSpriteColor(unsigned int spriteId, byte currentColor, byte newColor) {
+	MAP_ID(spriteId);
+
+	byte *data = _cursors[spriteId]->_data;
+	unsigned int size = _cursors[spriteId]->_width * _cursors[spriteId]->_height;
+	for (; size > 0; size--, data++) {
+		if (*data == currentColor) {
+			*data = newColor;
+		}
+	}
+}
+
 unsigned int Sprites::getSpritesCount() const {
 	if (_map) {
 		return _map->size();
diff --git a/engines/cryomni3d/sprites.h b/engines/cryomni3d/sprites.h
index 5721ea8532..bd4a8673db 100644
--- a/engines/cryomni3d/sprites.h
+++ b/engines/cryomni3d/sprites.h
@@ -52,6 +52,8 @@ public:
 
 	unsigned int getSpritesCount() const;
 
+	void replaceSpriteColor(unsigned int spriteId, byte currentColor, byte newColor);
+
 	const Graphics::Surface &getSurface(unsigned int spriteId) const;
 	const Graphics::Cursor &getCursor(unsigned int spriteId) const;
 
-- 
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