void killline(Line * l)
{
l->on=false;
l->dead=false;
// FIX: Make bang noise here?
switch (l->dir)
{
case DOWN:
// falls through.
case UP:
markgrid(l->geom.x,l->geom.y,l->geom.w,l->geom.h,' ');
//SDL_FillRect(screen,&l->geom,SDL_MapRGB(screen->format, 0xFF, 0xFF, 0xFF));
SDL_BlitSurface(screensave,&l->geom, screen, &l->geom);
soil(l->geom);
break;
case RIGHT:
// falls through
case LEFT:
markgrid(l->geom.x,l->geom.y,l->geom.w,l->geom.h,' ');
//SDL_FillRect(screen,&l->geom,SDL_MapRGB(screen->format, 0xFF, 0xFF, 0xFF));
SDL_BlitSurface(screensave,&l->geom, screen, &l->geom);
soil(l->geom);
break;
}
}
void squarefill(int x, int y)
{
// x and y must be the top left corner of a square, or else this
// will look silly. and there's no bounds checking!
if (grid[x][y]==' ' || grid[x][y]=='1' || grid[x][y]=='2' || grid[x][y]=='w')
{
markgrid(x,y,BLOCKWIDTH,BLOCKHEIGHT,'.');
squarefill(x+BLOCKWIDTH, y);
squarefill(x-BLOCKWIDTH, y);
squarefill(x, y+BLOCKHEIGHT);
squarefill(x, y-BLOCKHEIGHT);
}
}
int moveline(Line * l)
{
int finish=false;
char check1;
char check2;
markgrid(l->mark.x,l->mark.y,l->mark.w,l->mark.h,l->id);
SDL_FillRect(screen,&(l->mark),l->color);
soil(l->mark);
switch (l->dir)
{
case UP:
check1=grid[l->geom.x][l->geom.y-1];
check2=grid[l->geom.x+BLOCKWIDTH-1][l->geom.y-1];
break;
case DOWN:
check1=grid[l->geom.x][l->geom.y+l->geom.h];
check2=grid[l->geom.x+BLOCKWIDTH-1][l->geom.y+l->geom.h];
break;
case LEFT:
check1=grid[l->geom.x-1][l->geom.y];
check2=grid[l->geom.x-1][l->geom.y+BLOCKHEIGHT-1];
break;
case RIGHT:
check1=grid[l->geom.x+l->geom.w][l->geom.y];
check2=grid[l->geom.x+l->geom.w][l->geom.y+BLOCKHEIGHT-1];
break;
default: // this will never happen. really.
fprintf(stderr,"Line has no direction. That shouldn't have happened.\n");
check1='!';
check2='!';
break;
}
if (check1 == ' ' && check2 == ' ')
{ // next space is empty
switch (l->dir)
{
case UP:
l->geom.y--;
l->geom.h++;
l->mark.y--;
l->mark.h=1;
break;
case DOWN:
l->geom.h++; // increase length of line -- top stays same
l->mark.y+=l->mark.h;
l->mark.h=1;
break;
case LEFT:
l->geom.x--;
l->geom.w++;
l->mark.x--;
l->mark.w=1;
break;
case RIGHT:
l->geom.w++; // increase width of line -- left side stays same
l->mark.x+=l->mark.w;
l->mark.w=1;
break;
}
}
else if (check1 == '*' || check2 == '*')
{ // hit a penguin. kills line.
l->dead=true;
}
else if (check1 == '1' || check2 == '1' || check1 == '2' || check2 == '2')
{
if (l->stuckcount>LINEMAXSTUCK)
{
finish=true;
}
else
{
l->stuckcount++;
// FIX: kludge-o-rama!!
// this could work around the irratating thing where
// a line gets started 'on top' of another line. but it
// is totally repairing the symptom, not the bug. *sigh*
//if (l->geom.w==1 || l->geom.h==1) finish=true;
}
}
else
{ // hit something else
finish=true;
}
if (finish)
{
markgrid(l->mark.x,l->mark.y,l->mark.w,l->mark.h,l->id);
SDL_FillRect(screen,&(l->mark),l->color);
soil(l->mark);
finishline(l);
return(1);
}
return(0);
}
void finishline(Line * l)
{
int i;
int quick1=false;
int quick2=false;
l->on=false;
//printwholegrid();
switch (l->dir)
{
case DOWN:
// falls through.
case UP:
markgrid(l->geom.x,l->geom.y,l->geom.w,l->geom.h,'|');
SDL_FillRect(screen,&l->geom,SDL_MapRGB(screen->format, 0x00, 0x40, 0x80));
soil(l->geom);
// scan along edges to quickly determine if this
// is going to be complicated.
quick1=true; quick2=true;
for (i=l->geom.y+BLOCKHEIGHT/2;i<l->geom.y+l->geom.h;i++)
{
if (grid[l->geom.x-1][i] != ' ' && grid[l->geom.x-1][i] != '*') quick1=false;
if (grid[l->geom.x+BLOCKWIDTH][i] != ' ' && grid[l->geom.x+BLOCKWIDTH][i] != '*') quick2=false;
}
checkempty(l->geom.x-BLOCKWIDTH/2,l->geom.y+BLOCKHEIGHT/2);
checkempty(l->geom.x+BLOCKWIDTH+BLOCKWIDTH/2/2,l->geom.y+BLOCKHEIGHT/2);
if (!quick1)
for (i=l->geom.y+BLOCKHEIGHT/2+BLOCKHEIGHT;i<l->geom.y+l->geom.h;i+=BLOCKHEIGHT)
checkempty(l->geom.x-BLOCKWIDTH/2,i);
if (!quick2)
for (i=l->geom.y+BLOCKHEIGHT/2+BLOCKHEIGHT;i<l->geom.y+l->geom.h;i+=BLOCKHEIGHT)
checkempty(l->geom.x+BLOCKWIDTH+BLOCKWIDTH/2,i);
break;
case RIGHT:
// falls through
case LEFT:
markgrid(l->geom.x,l->geom.y,l->geom.w,l->geom.h,'-');
SDL_FillRect(screen,&l->geom,SDL_MapRGB(screen->format, 0x00, 0x40, 0x80));
soil(l->geom);
// scan along edges to quickly determine if this
// is going to be complicated.
quick1=true; quick2=true;
for (i=l->geom.x+BLOCKWIDTH/2;i<l->geom.x+l->geom.w;i++)
{
if (grid[i][l->geom.y-1] != ' ' && grid[i][l->geom.y-1] != '*') quick1=false;
if (grid[i][l->geom.y+BLOCKHEIGHT] != ' ' && grid[i][l->geom.y+BLOCKHEIGHT] != '*') quick2=false;
}
checkempty(l->geom.x+BLOCKWIDTH/2,l->geom.y-BLOCKHEIGHT/2);
checkempty(l->geom.x+BLOCKWIDTH/2,l->geom.y+BLOCKHEIGHT+BLOCKHEIGHT/2);
if (!quick1)
for (i=l->geom.x+BLOCKWIDTH/2+BLOCKWIDTH;i<l->geom.x+l->geom.w;i+=BLOCKWIDTH)
checkempty(i,l->geom.y-BLOCKHEIGHT/2);
if (!quick2)
for (i=l->geom.x+BLOCKWIDTH/2+BLOCKWIDTH;i<l->geom.x+l->geom.w;i+=BLOCKWIDTH)
checkempty(i,l->geom.y+BLOCKHEIGHT+BLOCKHEIGHT/2);
break;
}
}
