// license:BSD-3-Clause // copyright-holders:Phil Stroffolino /* video/shangkid */ #include "emu.h" #include "includes/shangkid.h" TILE_GET_INFO_MEMBER(shangkid_state::get_bg_tile_info) { int attributes = m_videoram[tile_index+0x800]; int tile_number = m_videoram[tile_index]+0x100*(attributes&0x3); int color; if( m_gfx_type==1 ) { /* Shanghai Kid: ------xx bank -----x-- flipx xxxxx--- color */ color = attributes>>3; color = (color&0x03)|((color&0x1c)<<1); SET_TILE_INFO_MEMBER(0, tile_number, color, (attributes&0x04)?TILE_FLIPX:0); } else { /* Chinese Hero: ------xx bank -xxxxx-- color x------- flipx? */ color = (attributes>>2)&0x1f; SET_TILE_INFO_MEMBER(0, tile_number, color, (attributes&0x80)?TILE_FLIPX:0); } tileinfo.category = (memregion( "proms" )->base()[0x800+color*4]==2)?1:0; } VIDEO_START_MEMBER(shangkid_state,shangkid) { m_background = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(shangkid_state::get_bg_tile_info)), TILEMAP_SCAN_ROWS, 8,8, 64,32); } WRITE8_MEMBER(shangkid_state::videoram_w) { m_videoram[offset] = data; m_background->mark_tile_dirty(offset&0x7ff ); } void shangkid_state::draw_sprite(const uint8_t *source, bitmap_ind16 &bitmap, const rectangle &cliprect) { gfx_element *gfx; int transparent_pen; int bank_index; int c,r; int width,height; int sx,sy; int ypos = 209 - source[0]; int tile = source[1]&0x3f; int xflip = (source[1]&0x40)?1:0; int yflip = (source[1]&0x80)?1:0; int bank = source[2]&0x3f; int xsize = (source[2]&0x40)?1:0; int ysize = (source[2]&0x80)?1:0; int yscale = source[3]&0x07; /* 0x0 = smallest; 0x7 = biggest */ int xpos = ((source[4]+source[5]*255)&0x1ff)-23; int color = source[6]&0x3f; int xscale = source[7]&0x07; /* 0x0 = smallest; 0x7 = biggest */ /* adjust placement for small sprites */ if( xsize==0 && xflip ) xpos -= 16; if( ysize==0 && yflip==0 ) ypos += 16; if( m_gfx_type == 1 ) { /* Shanghai Kid */ switch( bank&0x30 ) { case 0x00: case 0x10: tile += 0x40*(bank&0xf); break; case 0x20: tile += 0x40*((bank&0x3)|0x10); break; case 0x30: tile += 0x40*((bank&0x3)|0x14); break; } bank_index = 0; transparent_pen = 3; } else { /* Chinese Hero */ color >>= 1; // It's needed in level 7 to hide "bogus" sprites. Is it a sprite disable flag or an end sprite list flag? if(color == 0) return; switch( bank>>2 ) { case 0x0: bank_index = 0; break; case 0x9: bank_index = 1; break; case 0x6: bank_index = 2; break; case 0xf: bank_index = 3; break; default: bank_index = 0; break; } if( bank&0x01 ) tile += 0x40; transparent_pen = 7; } gfx = m_gfxdecode->gfx(1+bank_index); width = (xscale+1)*2; height = (yscale+1)*2; /* center zoomed sprites */ xpos += (16-width)*(xsize+1)/2; ypos += (16-height)*(ysize+1)/2; for( r=0; r<=ysize; r++ ) { for( c=0; c<=xsize; c++ ) { sx = xpos+(c^xflip)*width; sy = ypos+(r^yflip)*height; gfx->zoom_transpen( bitmap, cliprect, tile+c*8+r, color, xflip,yflip, sx,sy, (width<<16)/16, (height<<16)/16,transparent_pen ); // wrap around y gfx->zoom_transpen( bitmap, cliprect, tile+c*8+r, color, xflip,yflip, sx,sy+256, (width<<16)/16, (height<<16)/16,transparent_pen ); } } } void shangkid_state::shangkid_draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect) { const uint8_t *source, *finish; finish = m_spriteram; source = m_spriteram+0x200; while( source>finish ){ source -= 8; draw_sprite(source, bitmap,cliprect ); } } uint32_t shangkid_state::screen_update_shangkid(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { int flipscreen = m_videoreg[1]&0x80; m_background->set_flip(flipscreen?(TILEMAP_FLIPX|TILEMAP_FLIPY):0 ); m_background->set_scrollx(0,m_videoreg[0]-40 ); m_background->set_scrolly(0,m_videoreg[2]+0x10 ); m_background->draw(screen, bitmap, cliprect, 0,0 ); shangkid_draw_sprites(bitmap,cliprect ); m_background->draw(screen, bitmap, cliprect, 1,0 ); /* high priority tiles */ return 0; } void shangkid_state::dynamski_palette(palette_device &palette) const { const uint8_t *color_prom = memregion("proms")->base(); // create a lookup table for the palette for (int i = 0; i < 0x20; i++) { uint16_t const data = (color_prom[i | 0x20] << 8) | color_prom[i]; rgb_t const color(pal5bit(data >> 1), pal5bit(data >> 6), pal5bit(data >> 11)); palette.set_indirect_color(i, color); } // color_prom now points to the beginning of the lookup table color_prom += 0x40; // characters for (int i = 0; i < 0x40; i++) { uint8_t const ctabentry = color_prom[i] & 0x0f; palette.set_pen_indirect(i, ctabentry); } // sprites for (int i = 0; i < 0x40; i++) { uint8_t ctabentry = (color_prom[i + 0x100] & 0x0f) | 0x10; palette.set_pen_indirect(i + 0x40, ctabentry); } } void shangkid_state::dynamski_draw_background(bitmap_ind16 &bitmap, const rectangle &cliprect, int pri ) { int i; int sx,sy; int tile; int attr; int temp; for( i=0; i<0x400; i++ ) { sx = (i%32)*8; sy = (i/32)*8; if( sy<16 ) { temp = sx; sx = sy+256+16; sy = temp; } else if( sy>=256-16 ) { temp = sx; sx = sy-256+16; sy = temp; } else { sx+=16; } tile = m_videoram[i]; attr = m_videoram[i+0x400]; /* x---.---- priority? -xx-.---- bank */ if( pri==0 || (attr>>7)==pri ) { tile += ((attr>>5)&0x3)*256; m_gfxdecode->gfx(0)->transpen( bitmap, cliprect, tile, attr & 0x0f, 0,0,//xflip,yflip, sx,sy, pri?3:-1 ); } } } void shangkid_state::dynamski_draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect ) { int i; int sx,sy; int tile; int bank; int attr; int color; for( i=0x7e; i>=0x00; i-=2 ) { bank = m_videoram[0x1b80+i]; attr = m_videoram[0x1b81+i]; tile = m_videoram[0xb80+i]; color = m_videoram[0xb81+i]; sy = 240-m_videoram[0x1380+i]; sx = m_videoram[0x1381+i]-64+8+16; if( attr&1 ) sx += 0x100; m_gfxdecode->gfx(1)->transpen( bitmap, cliprect, bank*0x40 + (tile&0x3f), color, tile&0x80,tile&0x40, /* flipx,flipy */ sx,sy,3 ); } } uint32_t shangkid_state::screen_update_dynamski(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { dynamski_draw_background(bitmap,cliprect, 0 ); dynamski_draw_sprites(bitmap,cliprect ); dynamski_draw_background(bitmap,cliprect, 1 ); return 0; }