summaryrefslogblamecommitdiffstatshomepage
path: root/src/mame/video/tceptor.c
blob: ae8a2ef7f4f4dc8da9301670950b77b5bd9364c1 (plain) (tree)
1
2
3
4
5
6
7
8
9




                          
                
                             

                             




                                             

                                              

 



                                                                     
                                                                    

              
                                     
                                                              
 

                                                   
         



                                                       
                                                                                       

         
                                                                        

                            

          





                                                                       

                                              


                                              
                                                                             
         

                                                


                                                      
                                                                             
         
 



                                                                   
                                                                             





                                                              
                                                                             
         


                                         
                                                                     
                                   
                                                                                                
                                                         






















                                                                     
                                                                    
                                               

                                               
 

                                


                                         
                                                             





















                                                                                             
                                                                         


 

                                    
                                                                             
                                              
         
                                                 
                                               


         

                                     
                                                                             
                                               
         
                                                  
                                               







                                                                     
                                                                    
                                                                                                   


                                          
                                                   



                                         
                                                                    
                                                                                                                     


                                          
                                                   

 

                                  
                                                                             
                                       


                           
                                                                      
            
                                                                              



                                     
                                                                             


                       

                                                   

                      

                                                

                      
                                             


                      

                                                   

                      

                                                

                      
                                             






                                                                     
                                                                    
 
                                                                    










                                                   
                                    
                                                             



                         
                                                       








                                                   
                                   

                                 
                                                                                                                  

 
                                                                                                              

                                 
                                                                                                   


                   
                                                                          
 
                                                                    
















                                                                                               

                                                    


                   
                                                    

















                                                                                            
                                                                      


                   
                                                                          
 
                                                                    




















                                                                                               

                                                    




                                                  
                                                    













                                                                                    
                                                                      

 

                      
                                                                    

                      
                                                                                        
 

                                                                      
                                                


                                                  
                                  
                                   
 
                                        
                                         
 
                                        
                                         

                                   
                                                                                 


                                            
                                                                                                
 
                                                                                                          
 


                                                                                                        
 

                                                                                                            
 




                                                                                             

























                                                                     
                                                                                                                    
 
                                                                    

                                                              




















                                                               
                                                        




                                                           
                                                        



                                                           
                                                        

                                               
                                                                 
                                                                                                       










                                              

                                                     
                                                     



                                                 
                                           
                                           
                                                                                                                                









                                                                                
                                                                                                                                   
                                                        
                                                                                                                  



         
                        
 
                                                                              

                       
                                                                                                       
 


                                                                          

                                 
         
                                                   
 
                                                                  
                                                      
                                                                   


                                                      


                               


                                                                                       



                                     


                                                                                        


                                     


                                                                                  

         
                                                                  

                 

 
                     
 
                                                                    
                                                                         
 
/*
 *  Thunder Ceptor board
 *  emulate video hardware
 */

#include "emu.h"
#include "includes/namcoic.h"
#include "includes/tceptor.h"


#define TX_TILE_OFFSET_CENTER	(32 * 2)
#define TX_TILE_OFFSET_RIGHT	(32 * 0 + 2)
#define TX_TILE_OFFSET_LEFT	(32 * 31 + 2)

#define SPR_TRANS_COLOR		(0xff + 0x300)
#define SPR_MASK_COLOR		(0xfe + 0x300)


/*******************************************************************/

PALETTE_INIT( tceptor )
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	int i;

	/* allocate the colortable */
	machine.colortable = colortable_alloc(machine, 0x400);

	/* create a lookup table for the palette */
	for (i = 0; i < 0x400; i++)
	{
		int r = pal4bit(color_prom[i + 0x000]);
		int g = pal4bit(color_prom[i + 0x400]);
		int b = pal4bit(color_prom[i + 0x800]);

		colortable_palette_set_color(machine.colortable, i, MAKE_RGB(r, g, b));
	}

	/* color_prom now points to the beginning of the lookup table */
	color_prom += 0xc00;


	/*
          color lookup table:
            0-    +1024 ( 4 * 256) colors: text   (use 0-   256 colors)
            1024- +1024 (16 *  64) colors: sprite (use 768- 256 colors)
            2048-  +512 ( 8 *  64) colors: bg     (use 0-   512 colors)
            3840-  +256 ( 4 *  64) colors: road   (use 512- 256 colors)
        */

	/* tiles lookup table (1024 colors) */
	for (i = 0; i < 0x0400; i++)
	{
		int ctabentry = color_prom[i];
		colortable_entry_set_value(machine.colortable, i, ctabentry);
	}

	/* sprites lookup table (1024 colors) */
	for (i = 0x0400; i < 0x0800; i++)
	{
		int ctabentry = color_prom[i] | 0x300;
		colortable_entry_set_value(machine.colortable, i, ctabentry);
	}

	/* background: no lookup PROM, use directly (512 colors) */
	for (i = 0x0a00; i < 0x0c00; i++)
	{
		int ctabentry = i & 0x1ff;
		colortable_entry_set_value(machine.colortable, i, ctabentry);
	}

	/* road lookup table (256 colors) */
	for (i = 0x0f00; i < 0x1000; i++)
	{
		int ctabentry = color_prom[i - 0x700] | 0x200;
		colortable_entry_set_value(machine.colortable, i, ctabentry);
	}

	/* setup sprite mask color map */
	/* tceptor2: only 0x23 */
	memset(state->m_is_mask_spr, 0, sizeof state->m_is_mask_spr);
	for (i = 0; i < 0x400; i++)
		if (colortable_entry_get_value(machine.colortable, i | 0x400) == SPR_MASK_COLOR)
			state->m_is_mask_spr[i >> 4] = 1;
}


/*******************************************************************/

INLINE int get_tile_addr(int tile_index)
{
	int x = tile_index / 28;
	int y = tile_index % 28;

	switch (x)
	{
	case 0:
		return TX_TILE_OFFSET_LEFT + y;
	case 33:
		return TX_TILE_OFFSET_RIGHT + y;
	}

	return TX_TILE_OFFSET_CENTER + (x - 1) + y * 32;
}

static TILE_GET_INFO( get_tx_tile_info )
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	int offset = get_tile_addr(tile_index);
	int code = state->m_tile_ram[offset];
	int color = state->m_tile_attr[offset];

	tileinfo->group = color;

	SET_TILE_INFO(0, code, color, 0);
}

static void tile_mark_dirty(tceptor_state *state, int offset)
{
	int x = -1;
	int y = -1;

	if (offset >= TX_TILE_OFFSET_LEFT && offset < TX_TILE_OFFSET_LEFT + 28)
	{
		x = 0;
		y = offset - TX_TILE_OFFSET_LEFT;
	}
	else if (offset >= TX_TILE_OFFSET_RIGHT && offset < TX_TILE_OFFSET_RIGHT + 28)
	{
		x = 33;
		y = offset - TX_TILE_OFFSET_RIGHT;
	}
	else if (offset >= TX_TILE_OFFSET_CENTER && offset < TX_TILE_OFFSET_CENTER + 32 * 28)
	{
		offset -= TX_TILE_OFFSET_CENTER;
		x = (offset % 32) + 1;
		y = offset / 32;
	}

	if (x >= 0)
		tilemap_mark_tile_dirty(state->m_tx_tilemap, x * 28 + y);
}


WRITE8_HANDLER( tceptor_tile_ram_w )
{
	tceptor_state *state = space->machine().driver_data<tceptor_state>();
	if (state->m_tile_ram[offset] != data)
	{
		state->m_tile_ram[offset] = data;
		tile_mark_dirty(state, offset);
	}
}

WRITE8_HANDLER( tceptor_tile_attr_w )
{
	tceptor_state *state = space->machine().driver_data<tceptor_state>();
	if (state->m_tile_attr[offset] != data)
	{
		state->m_tile_attr[offset] = data;
		tile_mark_dirty(state, offset);
	}
}


/*******************************************************************/

static TILE_GET_INFO( get_bg1_tile_info )
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	UINT16 data = state->m_bg_ram[tile_index * 2] | (state->m_bg_ram[tile_index * 2 + 1] << 8);
	int code = (data & 0x3ff) | 0x000;
	int color = (data & 0xfc00) >> 10;

	SET_TILE_INFO(state->m_bg, code, color, 0);
}

static TILE_GET_INFO( get_bg2_tile_info )
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	UINT16 data = state->m_bg_ram[tile_index * 2 + 0x1000] | (state->m_bg_ram[tile_index * 2 + 1 + 0x1000] << 8);
	int code = (data & 0x3ff) | 0x400;
	int color = (data & 0xfc00) >> 10;

	SET_TILE_INFO(state->m_bg, code, color, 0);
}

WRITE8_HANDLER( tceptor_bg_ram_w )
{
	tceptor_state *state = space->machine().driver_data<tceptor_state>();
	state->m_bg_ram[offset] = data;

	offset /= 2;
	if (offset < 0x800)
		tilemap_mark_tile_dirty(state->m_bg1_tilemap, offset);
	else
		tilemap_mark_tile_dirty(state->m_bg2_tilemap, offset - 0x800);
}

WRITE8_HANDLER( tceptor_bg_scroll_w )
{
	tceptor_state *state = space->machine().driver_data<tceptor_state>();
	switch (offset)
	{
	case 0:
		state->m_bg1_scroll_x &= 0xff;
		state->m_bg1_scroll_x |= data << 8;
		break;
	case 1:
		state->m_bg1_scroll_x &= 0xff00;
		state->m_bg1_scroll_x |= data;
		break;
	case 2:
		state->m_bg1_scroll_y = data;
		break;

	case 4:
		state->m_bg2_scroll_x &= 0xff;
		state->m_bg2_scroll_x |= data << 8;
		break;
	case 5:
		state->m_bg2_scroll_x &= 0xff00;
		state->m_bg2_scroll_x |= data;
		break;
	case 6:
		state->m_bg2_scroll_y = data;
		break;
	}
}


/*******************************************************************/

static void decode_bg(running_machine &machine, const char * region)
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	static const gfx_layout bg_layout =
	{
		8, 8,
		2048,
		3,
		{ 0x40000+4, 0, 4 },
		{ 0, 1, 2, 3, 8, 9, 10, 11 },
		{ 0, 16, 32, 48, 64, 80, 96, 112 },
		128
	};

	int gfx_index = state->m_bg;
	UINT8 *src = machine.region(region)->base() + 0x8000;
	UINT8 *buffer;
	int len = 0x8000;
	int i;

	buffer = auto_alloc_array(machine, UINT8, len);

	/* expand rom tc2-19.10d */
	for (i = 0; i < len / 2; i++)
	{
		buffer[i*2+1] = src[i] & 0x0f;
		buffer[i*2] = (src[i] & 0xf0) >> 4;
	}

	memcpy(src, buffer, len);
	auto_free(machine, buffer);

	/* decode the graphics */
	machine.gfx[gfx_index] = gfx_element_alloc(machine, &bg_layout, machine.region(region)->base(), 64, 2048);
}

static void decode_sprite(running_machine &machine, int gfx_index, const gfx_layout *layout, const void *data)
{
	/* decode the graphics */
	machine.gfx[gfx_index] = gfx_element_alloc(machine, layout, (const UINT8 *)data, 64, 1024);
}

// fix sprite order
static void decode_sprite16(running_machine &machine, const char * region)
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	static const gfx_layout spr16_layout =
	{
		16, 16,
		512,
		4,
		{ 0x00000, 0x00004, 0x40000, 0x40004 },
		{
			0*8, 0*8+1, 0*8+2, 0*8+3, 1*8, 1*8+1, 1*8+2, 1*8+3,
			2*8, 2*8+1, 2*8+2, 2*8+3, 3*8, 3*8+1, 3*8+2, 3*8+3
		},
		{
			 0*2*16,  1*2*16,  2*2*16,  3*2*16,  4*2*16,  5*2*16,  6*2*16,  7*2*16,
			 8*2*16,  9*2*16, 10*2*16, 11*2*16, 12*2*16, 13*2*16, 14*2*16, 15*2*16
		},
		2*16*16
	};

	UINT8 *src = machine.region(region)->base();
	int len = machine.region(region)->bytes();
	UINT8 *dst;
	int i, y;

	dst = auto_alloc_array(machine, UINT8, len);

	for (i = 0; i < len / (4*4*16); i++)
		for (y = 0; y < 16; y++)
		{
			memcpy(&dst[(i*4 + 0) * (2*16*16/8) + y * (2*16/8)],
			       &src[i * (2*32*32/8) + y * (2*32/8)],
			       4);
			memcpy(&dst[(i*4 + 1) * (2*16*16/8) + y * (2*16/8)],
			       &src[i * (2*32*32/8) + y * (2*32/8) + (4*8/8)],
			       4);
			memcpy(&dst[(i*4 + 2) * (2*16*16/8) + y * (2*16/8)],
			       &src[i * (2*32*32/8) + y * (2*32/8) + (16*2*32/8)],
			       4);
			memcpy(&dst[(i*4 + 3) * (2*16*16/8) + y * (2*16/8)],
			       &src[i * (2*32*32/8) + y * (2*32/8) + (4*8/8) + (16*2*32/8)],
			       4);
		}

	decode_sprite(machine, state->m_sprite16, &spr16_layout, dst);
}

// fix sprite order
static void decode_sprite32(running_machine &machine, const char * region)
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	static const gfx_layout spr32_layout =
	{
		32, 32,
		1024,
		4,
		{ 0x000000, 0x000004, 0x200000, 0x200004 },
		{
			0*8, 0*8+1, 0*8+2, 0*8+3, 1*8, 1*8+1, 1*8+2, 1*8+3,
			2*8, 2*8+1, 2*8+2, 2*8+3, 3*8, 3*8+1, 3*8+2, 3*8+3,
			4*8, 4*8+1, 4*8+2, 4*8+3, 5*8, 5*8+1, 5*8+2, 5*8+3,
			6*8, 6*8+1, 6*8+2, 6*8+3, 7*8, 7*8+1, 7*8+2, 7*8+3
		},
		{
			 0*2*32,  1*2*32,  2*2*32,  3*2*32,  4*2*32,  5*2*32,  6*2*32,  7*2*32,
			 8*2*32,  9*2*32, 10*2*32, 11*2*32, 12*2*32, 13*2*32, 14*2*32, 15*2*32,
			16*2*32, 17*2*32, 18*2*32, 19*2*32, 20*2*32, 21*2*32, 22*2*32, 23*2*32,
			24*2*32, 25*2*32, 26*2*32, 27*2*32, 28*2*32, 29*2*32, 30*2*32, 31*2*32
		},
		2*32*32
	};

	UINT8 *src = machine.region(region)->base();
	int len = machine.region(region)->bytes();
	int total = spr32_layout.total;
	int size = spr32_layout.charincrement / 8;
	UINT8 *dst;
	int i;

	dst = auto_alloc_array(machine, UINT8, len);

	memset(dst, 0, len);

	for (i = 0; i < total; i++)
	{
		int code;

		code = (i & 0x07f) | ((i & 0x180) << 1) | 0x80;
		code &= ~((i & 0x200) >> 2);

		memcpy(&dst[size * (i + 0)],     &src[size * (code + 0)],     size);
		memcpy(&dst[size * (i + total)], &src[size * (code + total)], size);
	}

	decode_sprite(machine, state->m_sprite32, &spr32_layout, dst);
}

VIDEO_START( tceptor )
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	int gfx_index;

	state->m_sprite_ram_buffered = auto_alloc_array_clear(machine, UINT16, 0x200/2);

	/* find first empty slot to decode gfx */
	for (gfx_index = 0; gfx_index < MAX_GFX_ELEMENTS; gfx_index++)
		if (machine.gfx[gfx_index] == 0)
			break;
	assert(gfx_index + 4 <= MAX_GFX_ELEMENTS);

	state->m_bg = gfx_index++;
	decode_bg(machine, "gfx2");

	state->m_sprite16 = gfx_index++;
	decode_sprite16(machine, "gfx3");

	state->m_sprite32 = gfx_index++;
	decode_sprite32(machine, "gfx4");

	/* allocate temp bitmaps */
	state->m_temp_bitmap = machine.primary_screen->alloc_compatible_bitmap();

	namco_road_init(machine, gfx_index);

	namco_road_set_transparent_color(colortable_entry_get_value(machine.colortable, 0xfff));

	state->m_tx_tilemap = tilemap_create(machine, get_tx_tile_info, tilemap_scan_cols,  8, 8, 34, 28);

	tilemap_set_scrollx(state->m_tx_tilemap, 0, -2*8);
	tilemap_set_scrolly(state->m_tx_tilemap, 0, 0);
	colortable_configure_tilemap_groups(machine.colortable, state->m_tx_tilemap, machine.gfx[0], 7);

	state->m_bg1_tilemap = tilemap_create(machine, get_bg1_tile_info, tilemap_scan_rows,  8, 8, 64, 32);
	state->m_bg2_tilemap = tilemap_create(machine, get_bg2_tile_info, tilemap_scan_rows,  8, 8, 64, 32);

	state_save_register_global_pointer(machine, state->m_sprite_ram_buffered, 0x200 / 2);
	state_save_register_global(machine, state->m_bg1_scroll_x);
	state_save_register_global(machine, state->m_bg1_scroll_y);
	state_save_register_global(machine, state->m_bg2_scroll_x);
	state_save_register_global(machine, state->m_bg2_scroll_y);
}


/*******************************************************************/

/*
    Sprite data format

    000: zzzzzzBB BTTTTTTT
    002: ZZZZZZPP PPCCCCCC
    100: fFL---YY YYYYYYYY
    102: ------XX XXXXXXXX

    B: bank
    T: number
    P: priority
    C: color
    X: x
    Y: y
    L: large sprite
    F: flip x
    f: flip y
    Z: zoom x
    z: zoom y
*/

static void draw_sprites(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, int sprite_priority)
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	UINT16 *mem1 = &state->m_sprite_ram_buffered[0x000/2];
	UINT16 *mem2 = &state->m_sprite_ram_buffered[0x100/2];
	int need_mask = 0;
	int i;

	for (i = 0; i < 0x100; i += 2)
	{
		int scalex = (mem1[1 + i] & 0xfc00) << 1;
		int scaley = (mem1[0 + i] & 0xfc00) << 1;
		int pri = 7 - ((mem1[1 + i] & 0x3c0) >> 6);

		if (pri == sprite_priority && scalex && scaley)
		{
			int x = mem2[1 + i] & 0x3ff;
			int y = 512 - (mem2[0 + i] & 0x3ff);
			int flipx = mem2[0 + i] & 0x4000;
			int flipy = mem2[0 + i] & 0x8000;
			int color = mem1[1 + i] & 0x3f;
			int gfx;
			int code;

			if (mem2[0 + i] & 0x2000)
			{
				gfx = state->m_sprite32;
				code = mem1[0 + i] & 0x3ff;

			}
			else
			{
				gfx = state->m_sprite16;
				code = mem1[0 + i] & 0x1ff;
				scaley *= 2;
			}

			if (state->m_is_mask_spr[color])
			{
				if (!need_mask)
					// backup previous bitmap
					copybitmap(state->m_temp_bitmap, bitmap, 0, 0, 0, 0, cliprect);

				need_mask = 1;
			}

			// round off
			scalex += 0x800;
			scaley += 0x800;

			x -= 64;
			y -= 78;

			drawgfxzoom_transmask(bitmap,
			            cliprect,
			            machine.gfx[gfx],
			            code,
			            color,
			            flipx, flipy,
			            x, y,
			            scalex,
			            scaley,
			            colortable_get_transpen_mask(machine.colortable, machine.gfx[gfx], color, SPR_TRANS_COLOR));
		}
	}

	/* if SPR_MASK_COLOR pen is used, restore pixels from previous bitmap */
	if (need_mask)
	{
		int x, y;

		for (x = cliprect->min_x; x <= cliprect->max_x; x++)
			for (y = cliprect->min_y; y <= cliprect->max_y; y++)
				if (colortable_entry_get_value(machine.colortable, *BITMAP_ADDR16(bitmap, y, x)) == SPR_MASK_COLOR)
					// restore pixel
					*BITMAP_ADDR16(bitmap, y, x) = *BITMAP_ADDR16(state->m_temp_bitmap, y, x);
	}
}


SCREEN_UPDATE( tceptor )
{
	tceptor_state *state = screen->machine().driver_data<tceptor_state>();
	rectangle rect;
	int pri;
	int bg_center = 144 - ((((state->m_bg1_scroll_x + state->m_bg2_scroll_x ) & 0x1ff) - 288) / 2);

	device_t *_2d_screen       = screen->machine().device("2dscreen");
	device_t *_3d_left_screen  = screen->machine().device("3dleft");
	device_t *_3d_right_screen = screen->machine().device("3dright");

	if (screen != _2d_screen)
	{
		int frame = screen->frame_number();

		if ((frame & 1) == 1 && screen == _3d_left_screen)
			return UPDATE_HAS_NOT_CHANGED;
		if ((frame & 1) == 0 && screen == _3d_right_screen)
			return UPDATE_HAS_NOT_CHANGED;
	}

	// left background
	rect = *cliprect;
	rect.max_x = bg_center;
	tilemap_set_scrollx(state->m_bg1_tilemap, 0, state->m_bg1_scroll_x + 12);
	tilemap_set_scrolly(state->m_bg1_tilemap, 0, state->m_bg1_scroll_y + 20); //32?
	tilemap_draw(bitmap, &rect, state->m_bg1_tilemap, 0, 0);

	// right background
	rect.min_x = bg_center;
	rect.max_x = cliprect->max_x;
	tilemap_set_scrollx(state->m_bg2_tilemap, 0, state->m_bg2_scroll_x + 20);
	tilemap_set_scrolly(state->m_bg2_tilemap, 0, state->m_bg2_scroll_y + 20); // 32?
	tilemap_draw(bitmap, &rect, state->m_bg2_tilemap, 0, 0);

	for (pri = 0; pri < 8; pri++)
	{
		namco_road_draw(screen->machine(), bitmap, cliprect, pri * 2);
		namco_road_draw(screen->machine(), bitmap, cliprect, pri * 2 + 1);
		draw_sprites(screen->machine(), bitmap, cliprect, pri);
	}

	tilemap_draw(bitmap, cliprect, state->m_tx_tilemap, 0, 0);
	return 0;
}


SCREEN_EOF( tceptor )
{
	tceptor_state *state = machine.driver_data<tceptor_state>();
	memcpy(state->m_sprite_ram_buffered, state->m_sprite_ram, 0x200);
}