source/level/layercollision.cpp

@@ -95,6 +95,35 @@ int			CLayerCollision::getHeightFromGround(int _x,int _y,int _maxHeight)
 }
 
 
+/*****************************************************************************/
+int			CLayerCollision::getCollisionType(int _x,int _y)
+{
+	int	mapX,mapY,xFraction,yFraction;
+	int	distanceFromGround;
+	int	block,colHeight;
+	int	ret;
+
+	mapX=_x>>4;
+	mapY=(_y>>4)*MapWidth;
+	xFraction=_x&0x0f;
+	yFraction=16-(_y&0x0f);
+
+	block=Map[mapX+mapY];
+	colHeight=m_collisionTable[((block&COLLISION_MASK)*16)+xFraction];
+	if(colHeight==yFraction)
+	{
+		ret=block;
+	}
+	else
+	{
+		PAUL_DBGMSG("not on ground in getCollisionType()");
+		ret=0;
+	}
+
+	return ret;
+}
+
+
 /*****************************************************************************/
 #ifdef __SHOW_COLLISION__
 #include "gfx\prim.h"

source/level/layercollision.h

@@ -24,6 +24,7 @@ virtual	void			shutdown();
 
 		u8				Get(int X,int Y)	{return(Map[X+(Y*MapWidth)]&COLLISION_MASK);}
 		int				getHeightFromGround(int _x,int _y,int _maxHeight=32);
+		int				getCollisionType(int _x,int _y);
 
 #ifdef __SHOW_COLLISION__
 		void			render(DVECTOR &MapPos);

source/player/player.cpp

@@ -805,11 +805,17 @@ PLAYERINPUT CPlayer::getPadInputDown()
 	Params:
 	Returns:
   ---------------------------------------------------------------------- */
-int slip=false;
 int CPlayer::isOnSlippySurface()
 {
-return false;
+	int	ret=false;
-//	return slip&&isOnSolidGround();
+
+	if(m_layerCollision->getHeightFromGround(Pos.vx,Pos.vy,5)==0&&
+	   m_layerCollision->getCollisionType(Pos.vx,Pos.vy)&COLLISION_TYPE_FLAG_SLIPPERY)
+	{
+		ret=true;
+	}
+
+	return ret;
 }