static void draw_phasor(starshp1_state *state, bitmap_t* bitmap)
{
int i;
for (i = 128; i < 240; i++)
if (i >= get_sprite_vpos(state, 13))
{
*BITMAP_ADDR16(bitmap, i, 2 * i + 0) = 0x10;
*BITMAP_ADDR16(bitmap, i, 2 * i + 1) = 0x10;
*BITMAP_ADDR16(bitmap, i, 2 * (255 - i) + 0) = 0x10;
*BITMAP_ADDR16(bitmap, i, 2 * (255 - i) + 1) = 0x10;
}
}
static void draw_phasor(starshp1_state *state, bitmap_ind16 &bitmap)
{
int i;
for (i = 128; i < 240; i++)
if (i >= get_sprite_vpos(state, 13))
{
bitmap.pix16(i, 2 * i + 0) = 0x10;
bitmap.pix16(i, 2 * i + 1) = 0x10;
bitmap.pix16(i, 2 * (255 - i) + 0) = 0x10;
bitmap.pix16(i, 2 * (255 - i) + 1) = 0x10;
}
}
static void draw_sprites(running_machine *machine, bitmap_t* bitmap, const rectangle* cliprect)
{
starshp1_state *state = machine->driver_data<starshp1_state>();
int i;
for (i = 0; i < 14; i++)
{
int code = (state->obj_ram[i] & 0xf) ^ 0xf;
drawgfx_transpen(bitmap, cliprect, machine->gfx[1],
code % 8,
code / 8,
0, 0,
get_sprite_hpos(state, i),
get_sprite_vpos(state, i), 0);
}
}
static void draw_spaceship(running_machine *machine, bitmap_t* bitmap, const rectangle* cliprect)
{
starshp1_state *state = machine->driver_data<starshp1_state>();
double scaler = -5 * log(1 - state->ship_size / 256.0); /* ? */
unsigned xzoom = 2 * 0x10000 * scaler;
unsigned yzoom = 1 * 0x10000 * scaler;
int x = get_sprite_hpos(state, 14);
int y = get_sprite_vpos(state, 14);
if (x <= 0)
x -= (xzoom * state->ship_hoffset) >> 16;
if (y <= 0)
y -= (yzoom * state->ship_voffset) >> 16;
drawgfxzoom_transpen(bitmap, cliprect, machine->gfx[2],
state->ship_picture & 0x03,
state->ship_explode,
state->ship_picture & 0x80, 0,
x, y,
xzoom, yzoom, 0);
}