void _start( unsigned int memSize,
char *params,
boot_dir *bd )
{
screen_init();
set_attrib( ATTRIB_BRIGHT | ATTRIB_BLUE | ATTRIB_BLACK_BG );
printf( "Dem" );
set_attrib( ATTRIB_BRIGHT | ATTRIB_GREEN | ATTRIB_BLACK_BG );
printf( "OS" );
set_attrib( ATTRIB_WHITE | ATTRIB_BLACK_BG );
printf( " Week 1: " );
set_attrib( ATTRIB_RED | ATTRIB_BLACK_BG );
printf( "Getting Started\n\n" );
set_attrib( ATTRIB_WHITE | ATTRIB_BLACK_BG );
printf( "Hello World!\n" );
asm("hlt");
}
/**
* Creates a grid mesh.
*
* @param n_x the number of grid cells on the X axis
* @param n_y the number of grid cells on the Y axis
* @param width the width X of the grid (normalized)
* @param height the height Y of the grid (normalized)
* @param spacing the spacing between cells (normalized)
* @param conf_func a function to call to configure the grid (or NULL)
*/
void
Mesh::make_grid(int n_x, int n_y, double width, double height,
double spacing, grid_configuration_func conf_func)
{
double side_width = (width - (n_x - 1) * spacing) / n_x;
double side_height = (height - (n_y - 1) * spacing) / n_y;
for (int i = 0; i < n_x; i++) {
for (int j = 0; j < n_y; j++) {
LibMatrix::vec3 a(-width / 2 + i * (side_width + spacing),
height / 2 - j * (side_height + spacing), 0);
LibMatrix::vec3 b(a.x(), a.y() - side_height, 0);
LibMatrix::vec3 c(a.x() + side_width, a.y(), 0);
LibMatrix::vec3 d(a.x() + side_width, a.y() - side_height, 0);
if (!conf_func) {
std::vector<float> ul(vertex_size_);
std::vector<float> ur(vertex_size_);
std::vector<float> ll(vertex_size_);
std::vector<float> lr(vertex_size_);
set_attrib(0, a, &ul);
set_attrib(0, c, &ur);
set_attrib(0, b, &ll);
set_attrib(0, d, &lr);
next_vertex(); vertices_.back() = ul;
next_vertex(); vertices_.back() = ll;
next_vertex(); vertices_.back() = ur;
next_vertex(); vertices_.back() = ll;
next_vertex(); vertices_.back() = lr;
next_vertex(); vertices_.back() = ur;
}
else {
conf_func(*this, i, j, n_x, n_y, a, b, c, d);
}
}
}
}
static void putch_help(console_t *con, unsigned c)
{
unsigned short *fb_adr;
unsigned att;
att = (unsigned)con->attrib << 8;
fb_adr = con->fb_adr;
/* state machine to handle the escape sequences
ESC */
if(con->esc == 1)
{
if(c == '[')
{
con->esc++;
con->esc1 = 0;
return;
}
/* else fall-through: zero esc and print c */
}
/* ESC[ */
else if(con->esc == 2)
{
if(isdigit(c))
{
con->esc1 = con->esc1 * 10 + c - '0';
return;
}
else if(c == ';')
{
con->esc++;
con->esc2 = 0;
return;
}
/* ESC[2J -- clear screen */
else if(c == 'J')
{
if(con->esc1 == 2)
{
memsetw(fb_adr, ' ' | att,
_vc_height * _vc_width);
con->csr_x = con->csr_y = 0;
}
}
/* ESC[num1m -- set attribute num1 */
else if(c == 'm')
set_attrib(con, con->esc1);
con->esc = 0; /* anything else with one numeric arg */
return;
}
/* ESC[num1; */
else if(con->esc == 3)
{
if(isdigit(c))
{
con->esc2 = con->esc2 * 10 + c - '0';
return;
}
else if(c == ';')
{
con->esc++; /* ESC[num1;num2; */
con->esc3 = 0;
return;
}
/* ESC[num1;num2H -- move cursor to num1,num2 */
else if(c == 'H')
{
if(con->esc2 < _vc_width)
con->csr_x = con->esc2;
if(con->esc1 < _vc_height)
con->csr_y = con->esc1;
}
/* ESC[num1;num2m -- set attributes num1,num2 */
else if(c == 'm')
{
set_attrib(con, con->esc1);
set_attrib(con, con->esc2);
}
con->esc = 0;
return;
}
/* ESC[num1;num2;num3 */
else if(con->esc == 4)
{
if(isdigit(c))
{
con->esc3 = con->esc3 * 10 + c - '0';
return;
}
/* ESC[num1;num2;num3m -- set attributes num1,num2,num3 */
else if(c == 'm')
{
set_attrib(con, con->esc1);
set_attrib(con, con->esc2);
set_attrib(con, con->esc3);
}
con->esc = 0;
return;
}
con->esc = 0;
/* escape character */
if(c == 0x1B)
{
con->esc = 1;
return;
}
/* backspace */
if(c == 0x08)
{
if(con->csr_x != 0)
con->csr_x--;
}
/* tab */
else if(c == 0x09)
con->csr_x = (con->csr_x + 8) & ~(8 - 1);
/* carriage return */
else if(c == '\r') /* 0x0D */
con->csr_x = 0;
/* line feed */
// else if(c == '\n') /* 0x0A */
// con->csr_y++;
/* CR/LF */
else if(c == '\n') /* ### - 0x0A again */
{
con->csr_x = 0;
con->csr_y++;
}
/* printable ASCII */
else if(c >= ' ')
{
unsigned short *where;
where = fb_adr + (con->csr_y * _vc_width + con->csr_x);
*where = (c | att);
con->csr_x++;
}
if(con->csr_x >= _vc_width)
{
con->csr_x = 0;
con->csr_y++;
}
scroll(con);
/* move cursor only if the VC we're writing is the current VC */
if(_curr_vc == con)
move_csr();
}
