summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/video/plygonet.cpp
blob: 390be8274f123324529d2376b248778a1dfcf040 (plain) (blame)
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
// license:BSD-3-Clause
// copyright-holders:R. Belmont, Andrew Gardner
/*
    Polygonet Commanders (Konami, 1993)

    Video hardware emulation

    Currently contains: TTL text plane (probably not complete, needs banking? colors?)
    Needs: PSAC2 roz plane, polygons
*/

#include "emu.h"
#include "includes/plygonet.h"
#include "screen.h"


/* TTL text plane */

TILE_GET_INFO_MEMBER(polygonet_state::ttl_get_tile_info)
{
	int attr, code;

	code = m_ttl_vram[tile_index]&0xfff;

	attr = m_ttl_vram[tile_index]>>12;  /* palette in all 4 bits? */

	SET_TILE_INFO_MEMBER(m_ttl_gfx_index, code, attr, 0);
}

TILE_GET_INFO_MEMBER(polygonet_state::roz_get_tile_info)
{
	int attr, code;

	attr = (m_roz_vram[tile_index] >> 12) + 16; /* roz base palette is palette 16 */
	code = m_roz_vram[tile_index] & 0x3ff;

	SET_TILE_INFO_MEMBER(0, code, attr, 0);
}

READ32_MEMBER(polygonet_state::polygonet_ttl_ram_r)
{
	uint32_t *vram = (uint32_t *)m_ttl_vram;

	return vram[offset];
}

WRITE32_MEMBER(polygonet_state::polygonet_ttl_ram_w)
{
	uint32_t *vram = (uint32_t *)m_ttl_vram;

	COMBINE_DATA(&vram[offset]);

	m_ttl_tilemap->mark_tile_dirty(offset*2);
	m_ttl_tilemap->mark_tile_dirty(offset*2+1);
}

READ32_MEMBER(polygonet_state::polygonet_roz_ram_r)
{
	uint32_t *vram = (uint32_t *)m_roz_vram;

	return vram[offset];
}

WRITE32_MEMBER(polygonet_state::polygonet_roz_ram_w)
{
	uint32_t *vram = (uint32_t *)m_roz_vram;

	COMBINE_DATA(&vram[offset]);

	m_roz_tilemap->mark_tile_dirty(offset*2);
	m_roz_tilemap->mark_tile_dirty(offset*2+1);
}

TILEMAP_MAPPER_MEMBER(polygonet_state::plygonet_scan)
{
	return row * num_cols + (col^1);
}

TILEMAP_MAPPER_MEMBER(polygonet_state::plygonet_scan_cols)
{
	return col * num_rows + (row^1);
}

void polygonet_state::video_start()
{
	static const gfx_layout charlayout =
	{
		8, 8,   /* 8x8 */
		4096,   /* # of tiles */
		4,      /* 4bpp */
		{ 0, 1, 2, 3 }, /* plane offsets */
		{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 }, /* X offsets */
		{ 0*8*4, 1*8*4, 2*8*4, 3*8*4, 4*8*4, 5*8*4, 6*8*4, 7*8*4 }, /* Y offsets */
		8*8*4
	};

	/* find first empty slot to decode gfx */
	for (m_ttl_gfx_index = 0; m_ttl_gfx_index < MAX_GFX_ELEMENTS; m_ttl_gfx_index++)
		if (m_gfxdecode->gfx(m_ttl_gfx_index) == nullptr)
			break;

	assert(m_ttl_gfx_index != MAX_GFX_ELEMENTS);

	/* decode the ttl layer's gfx */
	m_gfxdecode->set_gfx(m_ttl_gfx_index, std::make_unique<gfx_element>(m_palette, charlayout, memregion("gfx1")->base(), 0, m_palette->entries() / 16, 0));

	/* create the tilemap */
	m_ttl_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(polygonet_state::ttl_get_tile_info)), tilemap_mapper_delegate(*this, FUNC(polygonet_state::plygonet_scan)),  8, 8, 64, 32);

	m_ttl_tilemap->set_transparent_pen(0);

	/* set up the roz t-map too */
	m_roz_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(polygonet_state::roz_get_tile_info)), tilemap_mapper_delegate(*this, FUNC(polygonet_state::plygonet_scan_cols)), 16, 16, 32, 64);
	m_roz_tilemap->set_transparent_pen(0);

	/* save states */
	save_item(NAME(m_ttl_gfx_index));
	save_item(NAME(m_ttl_vram));
	save_item(NAME(m_roz_vram));
}

uint32_t polygonet_state::screen_update_polygonet(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	screen.priority().fill(0);
	bitmap.fill(m_palette->black_pen(), cliprect);

	m_k053936->zoom_draw(screen, bitmap, cliprect, m_roz_tilemap, 0, 0, 0);

	m_ttl_tilemap->draw(screen, bitmap, cliprect, 0, 1<<0);
	return 0;
}