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istrebiteli: cleanup, notes, hw-like collision trigger (nw)

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This commit is contained in:
MetalliC 2016-10-05 20:42:17 +03:00
parent 48fd80f624
commit 82201a430b
1 changed files with 39 additions and 31 deletions
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70
src/mame/drivers/istrebiteli.cpp
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@ -6,7 +6,6 @@
TODO:
sound emulation
check sprite priorities
accurate sprite collision
how to play:
@ -16,6 +15,10 @@
test mode:
insert 12 or more coins then press 2 player start
note:
dumped PCB is early game version, have several bugs, possible test/prototype.
later version was seen in St.Petersburg arcade museum.
**************************************************************************/
#include "emu.h"
@ -158,26 +161,27 @@ public:
tilemap_t *m_tilemap;
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
UINT8 m_spr0_ctrl;
UINT8 m_spr1_ctrl;
UINT8 coin_count;
UINT8 m_spr_ctrl[2];
UINT8 m_spr_collision[2];
UINT8 m_spr_xy[8];
UINT8 m_tileram[16];
};
void istrebiteli_state::machine_start()
{
save_item(NAME(m_spr0_ctrl));
save_item(NAME(m_spr1_ctrl));
save_item(NAME(coin_count));
save_item(NAME(m_spr_ctrl));
save_item(NAME(m_spr_collision));
save_item(NAME(m_spr_xy));
save_item(NAME(m_tileram));
}
void istrebiteli_state::machine_reset()
{
m_spr0_ctrl = m_spr1_ctrl = 0;
coin_count = 0;
memset(m_spr_ctrl, 0, sizeof(m_spr_ctrl));
memset(m_spr_collision, 0, sizeof(m_spr_collision));
memset(m_spr_xy, 0, sizeof(m_spr_xy));
memset(m_tileram, 0, sizeof(m_tileram));
}
@ -213,7 +217,7 @@ void istrebiteli_state::video_start()
memcpy(&gfx[offs], &temp[0], 64);
}
m_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(istrebiteli_state::get_tile_info), this), TILEMAP_SCAN_ROWS_FLIP_X,
m_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(istrebiteli_state::get_tile_info), this), TILEMAP_SCAN_ROWS,
8, 16, 16, 1);
m_tilemap->set_scrolldx(96, 96);
}
@ -227,21 +231,22 @@ UINT32 istrebiteli_state::screen_update(screen_device &screen, bitmap_ind16 &bit
rect.set_size(16*8, 16);
m_tilemap->draw(screen, bitmap, rect, 0, 0);
m_gfxdecode->gfx(3)->transpen(bitmap, cliprect, (m_spr_ctrl[0] & 0x40) ? 5 : 7, 0, 0, 0, m_spr_xy[4], m_spr_xy[5], 1);
m_gfxdecode->gfx(3)->transpen(bitmap, cliprect, (m_spr_ctrl[1] & 0x40) ? 4 : 6, 0, 0, 0, m_spr_xy[6], m_spr_xy[7], 1);
int spritecode;
spritecode = (m_spr0_ctrl & 0x1f) + ((m_spr0_ctrl & 0x80) >> 2);
m_gfxdecode->gfx(1)->transpen(bitmap, cliprect, spritecode, 0, 0, 0, m_spr_xy[7], m_spr_xy[6], 1);
spritecode = (m_spr1_ctrl & 0x1f) + ((m_spr1_ctrl & 0x80) >> 2);
m_gfxdecode->gfx(2)->transpen(bitmap, cliprect, spritecode, 0, 0, 0, m_spr_xy[5], m_spr_xy[4], 1);
m_gfxdecode->gfx(3)->transpen(bitmap, cliprect, (m_spr0_ctrl & 0x40) ? 5:7, 0, 0, 0, m_spr_xy[3], m_spr_xy[2], 1);
m_gfxdecode->gfx(3)->transpen(bitmap, cliprect, (m_spr1_ctrl & 0x40) ? 4:6, 0, 0, 0, m_spr_xy[1], m_spr_xy[0], 1);
spritecode = (m_spr_ctrl[0] & 0x1f) + ((m_spr_ctrl[0] & 0x80) >> 2);
m_gfxdecode->gfx(1)->transpen(bitmap, cliprect, spritecode, 0, 0, 0, m_spr_xy[0], m_spr_xy[1], 1);
spritecode = (m_spr_ctrl[1] & 0x1f) + ((m_spr_ctrl[1] & 0x80) >> 2);
m_gfxdecode->gfx(2)->transpen(bitmap, cliprect, spritecode, 0, 0, 0, m_spr_xy[2], m_spr_xy[3], 1);
return 0;
}
WRITE8_MEMBER(istrebiteli_state::tileram_w)
{
offset ^= 15;
m_tileram[offset] = data;
m_tilemap->mark_tile_dirty(offset);
}
@ -273,17 +278,21 @@ WRITE8_MEMBER(istrebiteli_state::sound_w)
WRITE8_MEMBER(istrebiteli_state::spr0_ctrl_w)
{
m_spr0_ctrl = data;
m_spr_ctrl[0] = data;
if (data & 0x80)
m_spr_collision[0] = 0;
}
WRITE8_MEMBER(istrebiteli_state::spr1_ctrl_w)
{
m_spr1_ctrl = data;
m_spr_ctrl[1] = data;
if (data & 0x80)
m_spr_collision[1] = 0;
}
WRITE8_MEMBER(istrebiteli_state::spr_xy_w)
{
m_spr_xy[offset] = data;
m_spr_xy[offset ^ 7] = data;
}
static ADDRESS_MAP_START( mem_map, AS_PROGRAM, 8, istrebiteli_state)
@ -304,20 +313,19 @@ CUSTOM_INPUT_MEMBER(istrebiteli_state::collision_r)
{
// piece of HACK
// real hardware does per-pixel sprite collision detection
int id = *(int*)&param * 2;
int id = *(int*)&param;
int sx = m_spr_xy[5 + id];
int sy = m_spr_xy[4 + id];
int px = m_spr_xy[3 - id] + 3;
int py = m_spr_xy[2 - id] + 3;
if ((m_spr_ctrl[id] & 0x80) == 0)
{
int sx = m_spr_xy[0 + id * 2];
int sy = m_spr_xy[1 + id * 2];
int px = m_spr_xy[6 - id * 2] + 3;
int py = m_spr_xy[7 - id * 2] + 3;
if (sx < 56)
return 0;
if (px >= sx && px < (sx + 8) && py >= sy && py < (sy + 8))
return 1;
return 0;
if (sx > 56 && px >= sx && px < (sx + 8) && py >= sy && py < (sy + 8))
m_spr_collision[id] |= 1;
}
return m_spr_collision[id];
}
CUSTOM_INPUT_MEMBER(istrebiteli_state::coin_r)
@ -338,7 +346,7 @@ static INPUT_PORTS_START( istreb )
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(1)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(1)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(1)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_SPECIAL) PORT_CUSTOM_MEMBER(DEVICE_SELF, istrebiteli_state, collision_r, 0)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_SPECIAL) PORT_CUSTOM_MEMBER(DEVICE_SELF, istrebiteli_state, collision_r, 1)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
@ -348,7 +356,7 @@ static INPUT_PORTS_START( istreb )
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(2)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(2)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_SPECIAL) PORT_CUSTOM_MEMBER(DEVICE_SELF, istrebiteli_state, collision_r, 1)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_SPECIAL) PORT_CUSTOM_MEMBER(DEVICE_SELF, istrebiteli_state, collision_r, 0)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)