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i8244: don't collide grid with itself

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This commit is contained in:
hap 2020-08-03 21:05:12 +02:00
parent a2808657ab
commit b5b7dd3a49
1 changed files with 2 additions and 22 deletions
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24
src/devices/video/i8244.cpp
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@ -395,7 +395,7 @@ void i8244_device::render_scanline(int vpos)
int height = 24;
int w = ( m_vdc.s.control & 0x80 ) ? width : 2;
/* Draw horizontal part of grid */
/* Draw horizontal part of the grid */
for ( int j = 1, y = 0; y < 9; y++, j <<= 1 )
{
if ( y_grid_offset + y * height <= scanline && scanline < y_grid_offset + y * height + 3 )
@ -420,7 +420,7 @@ void i8244_device::render_scanline(int vpos)
}
}
/* Draw vertical part of grid */
/* Draw vertical part of the grid */
for( int j = 1, y = 0; y < 8; y++, j <<= 1 )
{
if ( y_grid_offset + y * height <= scanline && scanline < y_grid_offset + ( y + 1 ) * height )
@ -435,16 +435,6 @@ void i8244_device::render_scanline(int vpos)
if ( px < 160 )
{
/* Check if we collide with an already drawn source object */
if ( collision_map[ px ] & m_vdc.s.collision )
{
m_collision_status |= COLLISION_VERTICAL_GRID;
}
/* Check if an already drawn object would collide with us */
if ( COLLISION_VERTICAL_GRID & m_vdc.s.collision && collision_map[ px ] )
{
m_collision_status |= collision_map[ px ];
}
collision_map[ px ] |= COLLISION_VERTICAL_GRID;
m_tmp_bitmap.pix16( vpos, START_ACTIVE_SCAN + 10 + 2 * px ) = color;
m_tmp_bitmap.pix16( vpos, START_ACTIVE_SCAN + 10 + 2 * px + 1 ) = color;
@ -470,16 +460,6 @@ void i8244_device::render_scanline(int vpos)
if ( px < 160 )
{
/* Check if we collide with an already drawn source object */
if ( collision_map[ px ] & m_vdc.s.collision )
{
m_collision_status |= COLLISION_HORIZ_GRID_DOTS;
}
/* Check if an already drawn object would collide with us */
if ( COLLISION_HORIZ_GRID_DOTS & m_vdc.s.collision && collision_map[ px ] )
{
m_collision_status |= collision_map[ px ];
}
collision_map[ px ] |= COLLISION_HORIZ_GRID_DOTS;
m_tmp_bitmap.pix16( vpos, START_ACTIVE_SCAN + 10 + 2 * px ) = color;
m_tmp_bitmap.pix16( vpos, START_ACTIVE_SCAN + 10 + 2 * px + 1 ) = color;