1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
// license:BSD-3-Clause
// copyright-holders:David Haywood
/* Big Striker (bootleg) Video Hardware */
#include "emu.h"
#include "includes/bigstrkb.h"
/* Sprites */
void bigstrkb_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect )
{
/*- SPR RAM Format -**
16 bytes per sprite
nnnn nnnn nnnn nnnn aaaa aaaa aaaa aaaa xxxx xxxx xxxx xxxx yyyy yyyy yyyy yyyy
( rest unused )
**- End of Comments -*/
gfx_element *gfx = m_gfxdecode->gfx(2);
uint16_t *source = m_spriteram;
uint16_t *finish = source + 0x800/2;
while( source<finish )
{
int xpos, ypos, num, attr;
int flipx, col;
xpos = source[2];
ypos = source[3];
num = source[0];
attr = source[1];
ypos = 0xffff - ypos;
xpos -= 126;
ypos -= 16;
flipx = attr & 0x0100;
col = attr & 0x000f;
gfx->transpen(bitmap,cliprect,num,col,flipx,0,xpos,ypos,15);
source+=8;
}
}
/* Tilemaps */
TILEMAP_MAPPER_MEMBER(bigstrkb_state::bg_scan)
{
int offset;
offset = ((col&0xf)*16) + (row&0xf);
offset += (col >> 4) * 0x100;
offset += (row >> 4) * 0x800;
return offset;
}
TILE_GET_INFO_MEMBER(bigstrkb_state::get_tile_info)
{
int tileno,col;
tileno = m_videoram[tile_index] & 0x0fff;
col= m_videoram[tile_index] & 0xf000;
tileinfo.set(0,tileno,col>>12,0);
}
void bigstrkb_state::videoram_w(offs_t offset, uint16_t data)
{
m_videoram[offset] = data;
m_tilemap->mark_tile_dirty(offset);
}
TILE_GET_INFO_MEMBER(bigstrkb_state::get_tile2_info)
{
int tileno,col;
tileno = m_videoram2[tile_index] & 0x0fff;
col= m_videoram2[tile_index] & 0xf000;
tileinfo.set(1,tileno,col>>12,0);
}
void bigstrkb_state::videoram2_w(offs_t offset, uint16_t data)
{
m_videoram2[offset] = data;
m_tilemap2->mark_tile_dirty(offset);
}
TILE_GET_INFO_MEMBER(bigstrkb_state::get_tile3_info)
{
int tileno,col;
tileno = m_videoram3[tile_index] & 0x0fff;
col= m_videoram3[tile_index] & 0xf000;
tileinfo.set(1,tileno+0x2000,(col>>12)+(0x100/16),0);
}
void bigstrkb_state::videoram3_w(offs_t offset, uint16_t data)
{
m_videoram3[offset] = data;
m_tilemap3->mark_tile_dirty(offset);
}
/* Video Start / Update */
void bigstrkb_state::video_start()
{
m_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(bigstrkb_state::get_tile_info)), TILEMAP_SCAN_COLS, 8, 8, 64, 32);
m_tilemap2 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(bigstrkb_state::get_tile2_info)), tilemap_mapper_delegate(*this, FUNC(bigstrkb_state::bg_scan)), 16, 16, 128, 64);
m_tilemap3 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(bigstrkb_state::get_tile3_info)), tilemap_mapper_delegate(*this, FUNC(bigstrkb_state::bg_scan)), 16, 16, 128, 64);
m_tilemap->set_transparent_pen(15);
//m_tilemap2->set_transparent_pen(15);
m_tilemap3->set_transparent_pen(15);
}
uint32_t bigstrkb_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
// bitmap.fill(m_palette->black_pen(), cliprect);
m_tilemap2->set_scrollx(0, m_vidreg1[0]+(256-14));
m_tilemap2->set_scrolly(0, m_vidreg2[0]);
m_tilemap3->set_scrollx(0, m_vidreg1[1]+(256-14));
m_tilemap3->set_scrolly(0, m_vidreg2[1]);
m_tilemap2->draw(screen, bitmap, cliprect, 0,0);
m_tilemap3->draw(screen, bitmap, cliprect, 0,0);
draw_sprites(bitmap,cliprect);
m_tilemap->draw(screen, bitmap, cliprect, 0,0);
// popmessage ("Regs %08x %08x %08x %08x",m_vidreg2[0],m_vidreg2[1],m_vidreg2[2],m_vidreg2[3]);
return 0;
}
|