Added support for horizontal 'belt' reels which may be needed for future AWP titles. To invoke, add an attribute "beltreel" to the reel element in the layout, and set it to 1. [J. Wallace]

src/emu/rendlay.c

@@ -666,6 +666,8 @@ layout_element::component::component(running_machine &machine, xml_data_node &co
 		m_stateoffset = xml_get_attribute_int_with_subst(machine, compnode, "stateoffset", 0);
 		m_numsymbolsvisible = xml_get_attribute_int_with_subst(machine, compnode, "numsymbolsvisible", 3);
 		m_reelreversed = xml_get_attribute_int_with_subst(machine, compnode, "reelreversed", 0);
+		m_beltreel = xml_get_attribute_int_with_subst(machine, compnode, "beltreel", 0);
+		
 	}
 
 	// led7seg nodes
@@ -981,6 +983,12 @@ void layout_element::component::draw_simplecounter(running_machine &machine, bit
 /* state is a normalized value between 0 and 65536 so that we don't need to worry about how many motor steps here or in the .lay, only the number of symbols */
 void layout_element::component::draw_reel(running_machine &machine, bitmap_argb32 &dest, const rectangle &bounds, int state)
 {
+	if (m_beltreel)
+	{
+		draw_beltreel(machine,dest,bounds,state);
+	}
+	else
+	{
 		const int max_state_used = 0x10000;
 
 		// shift the reels a bit based on this param, allows fine tuning
@@ -996,6 +1004,8 @@ void layout_element::component::draw_reel(running_machine &machine, bitmap_argb3
 		render_font *font = machine.render().font_alloc("default");
 		float aspect = 1.0f;
 		INT32 width;
+		
+
 		int curry = 0;
 		int num_shown = m_numsymbolsvisible;
 
@@ -1124,14 +1134,162 @@ void layout_element::component::draw_reel(running_machine &machine, bitmap_argb3
 
 			curry += ourheight/num_shown;
 		}
+	// free the temporary bitmap and font
+	machine.render().font_free(font);
+	}
+}
+
+
+void layout_element::component::draw_beltreel(running_machine &machine, bitmap_argb32 &dest, const rectangle &bounds, int state)
+{
+	const int max_state_used = 0x10000;
+
+	// shift the reels a bit based on this param, allows fine tuning
+	int use_state = (state + m_stateoffset) % max_state_used;
+
+	// compute premultiplied colors
+	UINT32 r = m_color.r * 255.0;
+	UINT32 g = m_color.g * 255.0;
+	UINT32 b = m_color.b * 255.0;
+	UINT32 a = m_color.a * 255.0;
+
+	// get the width of the string
+	render_font *font = machine.render().font_alloc("default");
+	float aspect = 1.0f;
+	INT32 width;
+	int currx = 0;
+	int num_shown = m_numsymbolsvisible;
+
+	int ourwidth = bounds.width();
+
+	for (int fruit = 0;fruit<m_numstops;fruit++)
+	{
+		int basex;
+		if (m_reelreversed==1)
+		{
+			basex = bounds.min_x + ((use_state)*(ourwidth/num_shown)/(max_state_used/m_numstops)) + currx;
+		}
+		else
+		{
+			basex = bounds.min_x - ((use_state)*(ourwidth/num_shown)/(max_state_used/m_numstops)) + currx;
+		}
+
+		// wrap around...
+		if (basex < bounds.min_x)
+			basex += ((max_state_used)*(ourwidth/num_shown)/(max_state_used/m_numstops));
+		if (basex > bounds.max_x)
+			basex -= ((max_state_used)*(ourwidth/num_shown)/(max_state_used/m_numstops));
+
+		int endpos = basex+(ourwidth/num_shown);
+
+		// only render the symbol / text if it's atually in view because the code is SLOW
+		if ((endpos >= bounds.min_x) && (basex <= bounds.max_x))
+		{
+			while (1)
+			{
+				width = font->string_width(dest.height(), aspect, m_stopnames[fruit]);
+				if (width < bounds.width())
+					break;
+				aspect *= 0.9f;
+			}
+
+			INT32 curx;
+			curx = bounds.min_x;
+
+			if (m_file[fruit])
+				if (!m_bitmap[fruit].valid())
+					load_reel_bitmap(fruit);
+
+			if (m_file[fruit]) // render gfx
+			{
+				bitmap_argb32 tempbitmap2(ourwidth/num_shown, dest.height());
+
+				if (m_bitmap[fruit].valid())
+				{
+					render_resample_argb_bitmap_hq(tempbitmap2, m_bitmap[fruit], m_color);
+
+					for (int y = 0; y < dest.height(); y++)
+					{
+						int effy = y;
+
+						if (effy >= bounds.min_y && effy <= bounds.max_y)
+						{
+							UINT32 *src = &tempbitmap2.pix32(y);
+							UINT32 *d = &dest.pix32(effy);
+							for (int x = 0; x < ourwidth/num_shown; x++)
+							{
+								int effx = basex + x;
+								if (effx >= bounds.min_x && effx <= bounds.max_x)
+								{
+									UINT32 spix = rgb_t(src[x]).a();
+									if (spix != 0)
+									{
+										d[effx] = src[x];
+									}
+								}
+							}
+						}
+
+					}
+				}
+			}
+			else // render text (fallback)
+			{
+				// allocate a temporary bitmap
+				bitmap_argb32 tempbitmap(dest.width(), dest.height());
+
+				// loop over characters
+				for (const char *s = m_stopnames[fruit]; *s != 0; s++)
+				{
+					// get the font bitmap
+					rectangle chbounds;
+					font->get_scaled_bitmap_and_bounds(tempbitmap, dest.height(), aspect, *s, chbounds);
+
+					// copy the data into the target
+					for (int y = 0; y < chbounds.height(); y++)
+					{
+						int effy = y;
+
+						if (effy >= bounds.min_y && effy <= bounds.max_y)
+						{
+							UINT32 *src = &tempbitmap.pix32(y);
+							UINT32 *d = &dest.pix32(effy);
+							for (int x = 0; x < chbounds.width(); x++)
+							{
+								int effx = basex + curx + x;
+								if (effx >= bounds.min_x && effx <= bounds.max_x)
+								{
+									UINT32 spix = rgb_t(src[x]).a(); 
+									if (spix != 0)
+									{
+										rgb_t dpix = d[effx];
+										UINT32 ta = (a * (spix + 1)) >> 8;
+										UINT32 tr = (r * ta + dpix.r() * (0x100 - ta)) >> 8;
+										UINT32 tg = (g * ta + dpix.g() * (0x100 - ta)) >> 8;
+										UINT32 tb = (b * ta + dpix.b() * (0x100 - ta)) >> 8;
+										d[effx] = rgb_t(tr, tg, tb);
+									}
+								}
+							}
+						}
+					}
+
+					// advance in the X direction
+					curx += font->char_width(dest.height(), aspect, *s);
+
+				}
+
+			}
+		}
+
+		currx += ourwidth/num_shown;
+	}
 
 	// free the temporary bitmap and font
 	machine.render().font_free(font);
 }
 
 
-
-
 //-------------------------------------------------
 //  load_bitmap - load a PNG file with artwork for
 //  a component

src/emu/rendlay.h

@@ -105,6 +105,7 @@ private:
 		void draw_text(running_machine &machine, bitmap_argb32 &dest, const rectangle &bounds);
 		void draw_simplecounter(running_machine &machine, bitmap_argb32 &dest, const rectangle &bounds, int state);
 		void draw_reel(running_machine &machine, bitmap_argb32 &dest, const rectangle &bounds, int state);
+		void draw_beltreel(running_machine &machine, bitmap_argb32 &dest, const rectangle &bounds, int state);
 		void load_bitmap();
 		void load_reel_bitmap(int number);
 		void draw_led7seg(bitmap_argb32 &dest, const rectangle &bounds, int pattern);
@@ -148,7 +149,7 @@ private:
 		int                 m_stateoffset;
 		int                 m_reelreversed;
 		int                 m_numsymbolsvisible;
-
+		int					m_beltreel;
 	};
 
 	// a texture encapsulates a texture for a given element in a given state