From 5c69ae21ddf535f862585a4fa5892a9a1146618f Mon Sep 17 00:00:00 2001
From: johndoe123
Date: Fri, 8 Jul 2011 19:09:33 +0000
Subject: NEVERHOOD: More work on Klayman (still eye cancerous code)

- Start to implement KmScene1001
- Implement queryPositionSprite and queryPositionRectList
- Implement message list related code (setting and running them)
- Access to message params now with accessors (so compatible types can be converted)
---
 engines/neverhood/entity.h | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

(limited to 'engines/neverhood/entity.h')

diff --git a/engines/neverhood/entity.h b/engines/neverhood/entity.h
index 64c1181089..29bf6be988 100644
--- a/engines/neverhood/entity.h
+++ b/engines/neverhood/entity.h
@@ -30,16 +30,43 @@ namespace Neverhood {
 
 class Entity;
 
+enum MessageParamType {
+	mptInteger,
+	mptPoint,
+	mptEntity
+};
+
 struct MessageParam {
+public:
+	MessageParam(uint32 value) : _type(mptInteger), _integer(value) {}
+	MessageParam(NPoint value) : _type(mptPoint), _point(value) {}
+	MessageParam(Entity *entity) : _type(mptEntity), _entity(entity) {}
+	uint32 asInteger() const { 
+		assert(_type == mptInteger); 
+		return _integer; 
+	}
+	NPoint asPoint() const { 
+		assert(_type == mptInteger || _type == mptPoint);
+		if (_type == mptInteger) {
+			NPoint pt;
+			pt.x = (_integer >> 16) & 0xFFFF; 
+			pt.y = _integer & 0xFFFF;
+			return pt;
+		} 
+		return _point; 
+	}
+	Entity *asEntity() const {
+		assert(_type == mptEntity); 
+		return _entity; 
+	}
+protected:
 	union {
 		uint32 _integer;
 		NPoint _point;
 		Entity *_entity;
 		// TODO: Other types...
 	};
-	MessageParam(uint32 value) { _integer = value; }
-	MessageParam(NPoint value) { _point = value; }
-	MessageParam(Entity *entity) { _entity = entity; }
+	MessageParamType _type;
 	// TODO: Constructors for the param types...
 };
 
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