summaryrefslogtreecommitdiffstats
path: root/src/mame/video/drgnmst.cpp
blob: 5ed9b304079abc3c91e0d918a9732a5ad1921821 (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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
// license:BSD-3-Clause
// copyright-holders:David Haywood
// remaining gfx glitches

// layer priority register not fully understood

#include "emu.h"
#include "includes/drgnmst.h"


rgb_t drgnmst_base_state::drgnmst_IIIIRRRRGGGGBBBB(uint32_t raw)
{
	int const bright = 0x5 + ((raw >> 12) & 0xf);    // TODO : verify brightness value from real pcb
	int r = (pal4bit((raw >> 8) & 0x0f) * bright) / 0x14;
	int g = (pal4bit((raw >> 4) & 0x0f) * bright) / 0x14;
	int b = (pal4bit((raw >> 0) & 0x0f) * bright) / 0x14;

	if (r < 0) r = 0;
	if (r > 0xff) r = 0xff;
	if (g < 0) g = 0;
	if (g > 0xff) g = 0xff;
	if (b < 0) b = 0;
	if (b > 0xff) b = 0xff;

	return rgb_t(r, g, b);
}

TILE_GET_INFO_MEMBER(drgnmst_base_state::get_fg_tile_info)
{
	// 8x8 tile layer
	int tileno, colour, flipyx;
	tileno = m_fg_videoram[tile_index * 2] & 0xfff;
	colour = m_fg_videoram[tile_index * 2 + 1] & 0x1f;
	flipyx = (m_fg_videoram[tile_index * 2 + 1] & 0x60)>>5;

	if ((m_fg_videoram[tile_index * 2] & 0x4000))
		tileno |= 0x10000;

	if ((m_fg_videoram[tile_index * 2] & 0x8000))
		tileno |= 0x8000;

	tileno ^= 0x18000;

//  tileno |= (BIT(tile_index, 5)) << 15; // 8x8 tile bank seems like cps1 (not on mastfury at least)
	tileinfo.set(1, tileno, colour, TILE_FLIPYX(flipyx));
}

void drgnmst_base_state::fg_videoram_w(offs_t offset, uint16_t data, uint16_t mem_mask)
{
	COMBINE_DATA(&m_fg_videoram[offset]);
	m_fg_tilemap->mark_tile_dirty(offset / 2);
}

TILE_GET_INFO_MEMBER(drgnmst_base_state::get_bg_tile_info)
{
	// 32x32 tile layer
	int tileno, colour, flipyx;
	tileno = (m_bg_videoram[tile_index * 2] & 0x3ff) + 0xc00;
	colour = m_bg_videoram[tile_index * 2 + 1] & 0x1f;
	flipyx = (m_bg_videoram[tile_index * 2 + 1] & 0x60) >> 5;

	if ((m_bg_videoram[tile_index * 2] & 0x1000))
		tileno |= 0x1000;

	tileno ^= 0x1000;

	tileinfo.set(3, tileno, colour, TILE_FLIPYX(flipyx));
}

void drgnmst_base_state::bg_videoram_w(offs_t offset, uint16_t data, uint16_t mem_mask)
{
	COMBINE_DATA(&m_bg_videoram[offset]);
	m_bg_tilemap->mark_tile_dirty(offset / 2);
}

TILE_GET_INFO_MEMBER(drgnmst_base_state::get_md_tile_info)
{
	// 16x16 tile layer
	int tileno, colour, flipyx;
	tileno = (m_md_videoram[tile_index * 2] & 0x3fff) - 0x2000;
	colour = m_md_videoram[tile_index * 2 + 1] & 0x1f;
	flipyx = (m_md_videoram[tile_index * 2 + 1] & 0x60) >> 5;

	if ((m_md_videoram[tile_index * 2] & 0x4000))
		tileno |= 0x4000;

	tileno ^= 0x4000;

	tileinfo.set(2, tileno, colour, TILE_FLIPYX(flipyx));
}

void drgnmst_base_state::md_videoram_w(offs_t offset, uint16_t data, uint16_t mem_mask)
{
	COMBINE_DATA(&m_md_videoram[offset]);
	m_md_tilemap->mark_tile_dirty(offset / 2);
}

void drgnmst_base_state::draw_sprites( bitmap_ind16 &bitmap,const rectangle &cliprect )
{
	gfx_element *gfx = m_gfxdecode->gfx(0);
	uint16_t *source = m_spriteram->buffer();
	uint16_t *finish = source + 0x800 / 2;

	while (source < finish)
	{
		int xpos, ypos, number, flipx, flipy, wide, high;
		int x, y;
		int incx, incy;
		int colr;

		number = source[2];
		xpos = source[0];
		ypos = source[1];
		flipx = source[3] & 0x0020;
		flipy = source[3] & 0x0040;
		wide = (source[3] & 0x0f00) >> 8;
		high = (source[3] & 0xf000) >> 12;
		colr = (source[3] & 0x001f);

		if ((source[3] & 0xff00) == 0xff00) break;


		if (!flipx) { incx = 16;} else { incx = -16; xpos += 16 * wide; }
		if (!flipy) { incy = 16;} else { incy = -16; ypos += 16 * high; }


		for (y = 0; y <= high; y++)
		{
			for (x = 0; x <= wide; x++)
			{
				int realx, realy, realnumber;

				realx = xpos + incx * x;
				realy = ypos + incy * y;
				realnumber = number + x + y * 16;

				gfx->transpen(bitmap,cliprect, realnumber, colr, flipx, flipy, realx, realy, 15);
			}
		}
		source += 4;
	}
}


TILEMAP_MAPPER_MEMBER(drgnmst_base_state::fg_tilemap_scan_cols)
{
	return ((col & 0x3f) << 5) | (row & 0x1f) | ((row & 0x20) << 6);
}

TILEMAP_MAPPER_MEMBER(drgnmst_base_state::md_tilemap_scan_cols)
{
	return ((col & 0x3f) << 4) | (row & 0x0f) | ((row & 0x30) << 6);
}

TILEMAP_MAPPER_MEMBER(drgnmst_base_state::bg_tilemap_scan_cols)
{
	return ((col & 0x3f) << 3) | (row & 0x07) | ((row & 0x38) << 6);
}

void drgnmst_base_state::video_start()
{
	m_fg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(drgnmst_base_state::get_fg_tile_info)), tilemap_mapper_delegate(*this, FUNC(drgnmst_base_state::fg_tilemap_scan_cols)), 8, 8, 64,64);
	m_fg_tilemap->set_transparent_pen(15);

	m_md_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(drgnmst_base_state::get_md_tile_info)), tilemap_mapper_delegate(*this, FUNC(drgnmst_base_state::md_tilemap_scan_cols)), 16, 16, 64,64);
	m_md_tilemap->set_transparent_pen(15);

	m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(drgnmst_base_state::get_bg_tile_info)), tilemap_mapper_delegate(*this, FUNC(drgnmst_base_state::bg_tilemap_scan_cols)), 32, 32, 64,64);
	m_bg_tilemap->set_transparent_pen(15);

	// do the other tilemaps have rowscroll too? probably not ..
	m_md_tilemap->set_scroll_rows(1024);
}

void drgnmst_ym_state::video_start()
{
	drgnmst_base_state::video_start();
	m_alt_scrolling = true;
}

uint32_t drgnmst_base_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{

	int rowscroll_bank = (m_vidregs[4] & 0x30) >> 4;

	if (!m_alt_scrolling)
	{
		// drgnmst scrolling
		m_fg_tilemap->set_scrollx(0, m_vidregs[0x6] - 18); // verify (test mode colour test needs it)
		m_fg_tilemap->set_scrolly(0, m_vidregs[0x7]); // verify

		m_md_tilemap->set_scrolly(0, m_vidregs[0x9]); // verify
		for (int y = 0; y < 1024; y++)
			m_md_tilemap->set_scrollx(y, m_vidregs[0x8] - 16 + m_rowscrollram[y + 0x800 * rowscroll_bank]);

		m_bg_tilemap->set_scrollx(0, m_vidregs[0xa] - 18); // verify
		m_bg_tilemap->set_scrolly(0, m_vidregs[0xb]); // verify
	}
	else
	{
		// mastfury scrolling
		// does layer order change scroll offsets?

		int fgys = m_vidregs[0x7];
		m_fg_tilemap->set_scrollx(0, m_vidregs[0x6] - 14); // 14 = continue screen background
		m_fg_tilemap->set_scrolly(0, fgys); // verify

		int mgys = m_vidregs[0x8]; // skyscraper lift stage confirms this reg?
		m_md_tilemap->set_scrolly(0, mgys); // verify
		for (int y = 0; y < 1024; y++)
			m_md_tilemap->set_scrollx(y, m_vidregs[0x9] - 14 + m_rowscrollram[y + 0x800 * rowscroll_bank]); // 14 = char select backround, but vs screen is 16?

		m_bg_tilemap->set_scrollx(0, m_vidregs[0xa] - 18); // verify

		// this reg seems to be more closely related to md_tilemap again? is it some kind of split pos?
		//int bgys = m_vidregs[0xb] & 0x1ff;

		int bgys = m_vidregs[0x10]; // skyscraper lift stage confirms this reg?
		m_bg_tilemap->set_scrolly(0, bgys);
	}

	// TODO: figure out which bits relate to the order, like cps1?
	// 23da mastfury before attract portraits, ending
	// 12c8 mastfury power on
	switch (m_vidregs2[0])
	{

		case 0x23c0: // all ok
			m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_md_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
		case 0x2cc0: // mastfury mr daeth stage all ok
			m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_md_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
		case 0x38c0: // mastfury Sakamoto stage, Sya Ki stage same as above? but see note
			// should fg also go above sprites? (it partially obscures 'time over' and bonus stage items on Sakamoto stage
			// but explicitly changes from 2cc0 to display scores, which indicates there is maybe a difference)
			m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_md_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
		case 0x2780: // mastfury skyscraper lift stage all ok
		case 0x279a: // mastfury continue screen all ok
			m_md_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
		case 0x2d80: // all ok
		case 0x2cda: // mastfury win quotes all ok
			m_md_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
		case 0x38da: // fg unsure
		case 0x215a: // fg unsure (mastfury title)
		case 0x2140: // all ok
			m_fg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_md_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
		case 0x2451: // fg unsure
		case 0x2d9a: // fg unsure
		case 0x2440: // all ok
		case 0x245a: // fg unsure, title screen
			m_fg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_md_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
		default:
			m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
			m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			m_md_tilemap->draw(screen, bitmap, cliprect, 0, 0);
			break;
	}

	draw_sprites(bitmap,cliprect);

	//popmessage("unknown video priority regs %04x\n", m_vidregs2[0]);

	return 0;
}