From c46ee55a7b1ed371faa91bd974d9d4b596066040 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Banaan=20Ananas?=
 <happppp@users.noreply.github.com>
Date: Mon, 21 Mar 2011 12:24:02 +0000
Subject: [PATCH] add sprite y flipping (eg. throwing a baddie in bigfight)

---
 src/mame/video/tatsumi.c | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/src/mame/video/tatsumi.c b/src/mame/video/tatsumi.c
index 545f003f2eb..be3068ae072 100644
--- a/src/mame/video/tatsumi.c
+++ b/src/mame/video/tatsumi.c
@@ -529,7 +529,7 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
 {
 	tatsumi_state *state = machine->driver_data<tatsumi_state>();
 	UINT16 *spriteram16 = state->spriteram;
-	int offs,fx,x,y,color;
+	int offs,fx,fy,x,y,color;
 	int w,h,index,lines,scale,rotate;
 	UINT8 *src1, *src2;
 
@@ -549,7 +549,9 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
             Word 0: 0xf000 - ?
                     0x0fff - Index into ROM sprite table
             Word 1: 0x8000 - X Flip
-                    0x7ff8 - Colour (TODO:  Check top bit on Apache 3/Round up)
+                    0x4000 - Y Flip
+                    0x3000 - ?
+                    0x0ff8 - Color
                     0x0007 - ?
             Word 2: 0xffff - X position
             Word 3: 0xffff - Y position
@@ -576,6 +578,7 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
 		scale = spriteram16[offs+4]&0x1ff;
 		color = (spriteram16[offs+1]>>3)&0x1ff;
 		fx = spriteram16[offs+1]&0x8000;
+		fy = spriteram16[offs+1]&0x4000;
 		rotate = 0;//spriteram16[offs+5]&0x1ff; // Todo:  Turned off for now
 
 		index = spriteram16[offs];
@@ -601,7 +604,10 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
 		render_y=y<<16;
 		scale=scale<<9; /* 0x80 becomes 0x10000 */
 
-		render_y+=y_offset * scale;
+		if (fy)
+			render_y-=y_offset * scale;
+		else
+			render_y+=y_offset * scale;
 
 		if (rotate)
 		{
@@ -647,13 +653,13 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
 						roundupt_drawgfxzoomrotate(
 								state->temp_bitmap,cliprect,machine->gfx[0],
 								base,
-								color,fx,0,x_pos,render_y,
+								color,fx,fy,x_pos,render_y,
 								scale,scale,0,write_priority_only);
 					else
 						roundupt_drawgfxzoomrotate(
 								bitmap,cliprect,machine->gfx[0],
 								base,
-								color,fx,0,x_pos,render_y,
+								color,fx,fy,x_pos,render_y,
 								scale,scale,0,write_priority_only);
 					base++;
 
@@ -673,7 +679,11 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
 					extent_x=this_extent;
 				this_extent=0;
 
-				render_y+=8 * scale;
+				if (fy)
+					render_y-=8 * scale;
+				else
+					render_y+=8 * scale;
+
 				extent_y+=8 * scale;
 				h++;
 				lines-=8;