int Draw_Missile(void)
{
// this function draws the missile
// test if missile is alive
if (missile_state==1)
{
// lock secondary buffer
DDraw_Lock_Back_Surface();
// draw the missile in green
Draw_Clip_Line(missile_x, missile_y,
missile_x, missile_y+6,
250,back_buffer, back_lpitch);
// unlock surface
DDraw_Unlock_Back_Surface();
// return success
return(1);
} // end if
// return failure
return(0);
} // end Draw_Missle
int Draw_Polygon2D(POLYGON2D_PTR poly, UCHAR *vbuffer, int lpitch)
{
// this function draws a POLYGON2D based on
// test if the polygon is visible
if (poly->state)
{
// loop thru and draw a line from vertices 1 to n
int index = 0;
for (index=0; index < poly->num_verts-1; index++)
{
// draw line from ith to ith+1 vertex
Draw_Clip_Line(poly->vlist[index].x+poly->x0,
poly->vlist[index].y+poly->y0,
poly->vlist[index+1].x+poly->x0,
poly->vlist[index+1].y+poly->y0,
poly->color,
vbuffer, lpitch);
} // end for
// now close up polygon
// draw line from last vertex to 0th
Draw_Clip_Line(poly->vlist[0].x+poly->x0,
poly->vlist[0].y+poly->y0,
poly->vlist[index].x+poly->x0,
poly->vlist[index].y+poly->y0,
poly->color,
vbuffer, lpitch);
// return success
return(1);
} // end if
else
return(0);
} // end Draw_Polygon2D
