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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
#include "mahjongg.h"
/*
* mark tiles that partially obscure the given tile.
* relies on Depth*Dxy <= Tilex/2
*/
void
markabove(int d, int x, int y)
{
int dx, dy;
for(d++; d < Depth; d++)
for(dx = -1; dx <= 2; dx++)
for(dy = -1; dy <= 2; dy++)
if(x+dx < Lx && x+dx >= 0 &&
y+dy < Ly && y+dy >= 0)
level.board[d][x+dx][y+dy].redraw = 1;
}
void
markbelow(int d, int x, int y)
{
int dx, dy;
for(d--; d >= 0; d--)
for(dx = -2; dx <= 1; dx++)
for(dy = -2; dy <= 1; dy++)
if(x+dx < Lx && x+dx >= 0 &&
y+dy < Ly && y+dy >= 0)
level.board[d][x+dx][y+dy].redraw = 1;
}
Rectangle
tilerect(Click c)
{
Point p;
Rectangle r;
p = Pt(c.x*(Facex/2)-(c.d*TileDxy), c.y*(Facey/2)-(c.d*TileDxy));
r = Rpt(p, addpt(p, Pt(Facex, Facey)));
return rectaddpt(r, Pt(Depth*TileDxy, Depth*TileDxy));
}
void
clearbrick(Click c)
{
Rectangle r;
level.hist[--level.remaining] = c;
level.board[c.d][c.x][c.y].which = None;
level.board[c.d][c.x+1][c.y].which = None;
level.board[c.d][c.x][c.y+1].which = None;
level.board[c.d][c.x+1][c.y+1].which = None;
r = tilerect(c);
draw(img, r, background, nil, r.min);
markabove(c.d, c.x, c.y);
markbelow(c.d, c.x, c.y);
}
void
drawbrick(Click c)
{
Rectangle r;
r = tilerect(c);
draw(img, r, tileset, nil, level.board[c.d][c.x][c.y].start);
if(level.board[c.d][c.x][c.y].clicked)
draw(img, r, selected, nil, ZP);
if(eqcl(level.l, c))
border(img, r, 2, litbrdr, level.board[c.d][c.x][c.y].start);
/* looks better without borders, uncomment to check it out with'em */
// r = Rpt(r.min, addpt(r.min, Pt(Tilex, Tiley)));
// draw(img, r, brdr, nil, ZP);
}
void
redrawlevel(int all)
{
Brick *b;
int d, x, y;
for(d = 0; d < Depth; d++)
for(y = 0; y < Ly; y++)
for(x = 0; x < Lx; x++) {
b = &level.board[d][x][y];
if(b->which == TL && (all || b->redraw)) {
drawbrick(Cl(d,x,y));
markabove(d,x,y);
}
b->redraw = 0;
}
draw(screen, screen->r, img, nil, ZP);
flushimage(display, 1);
}
void
updatelevel(void)
{
redrawlevel(0);
}
void
drawlevel(void)
{
draw(img, img->r, background, nil, ZP);
redrawlevel(1);
}
void
resize(Point p)
{
int fd;
fd = open("/dev/wctl", OWRITE);
if(fd >= 0){
fprint(fd, "resize -dx %d -dy %d", p.x, p.y);
close(fd);
}
}
void
hint(void)
{
int d = 0, x = 0, y = 0;
Brick *b = nil;
if(level.c.d != -1) {
if((b = bmatch(level.c)) != nil) {
d = level.c.d;
x = level.c.x;
y = level.c.y;
}
} else
for(d = Depth - 1; d >= 0; d--)
for(y = 0; y < Ly; y++)
for(x = 0; x < Lx; x++)
if(level.board[d][x][y].which == TL &&
isfree(Cl(d,x,y)) &&
(b = bmatch(Cl(d,x,y))) != nil)
goto Matched;
Matched:
if (b == nil)
return;
level.board[d][x][y].clicked = 1;
b->clicked = 1;
b->redraw = 1;
updatelevel();
sleep(500);
if(level.c.d == -1)
level.board[d][x][y].clicked = 0;
b->clicked = 0;
b->redraw = 1;
updatelevel();
sleep(500);
level.board[d][x][y].clicked = 1;
b->clicked = 1;
b->redraw = 1;
updatelevel();
sleep(500);
if(level.c.d == -1)
level.board[d][x][y].clicked = 0;
b->clicked = 0;
b->redraw = 1;
updatelevel();
}
void
done(void)
{
level.done = 1;
draw(screen, screen->r, selected, gameover, ZP);
flushimage(display, 1);
}
Click
findclick(Point coord)
{
Click c;
for(c.d = Depth - 1; c.d >= 0; c.d--) {
c.x = (coord.x + TileDxy*c.d)/(Facex/2);
c.y = (coord.y + TileDxy*c.d)/(Facey/2);
switch(level.board[c.d][c.x][c.y].which) {
case None:
break;
case TL:
return c;
case TR:
c.x = c.x - 1;
return c;
case BR:
c.x = c.x - 1;
c.y = c.y - 1;
return c;
case BL:
c.y = c.y - 1;
return c;
}
}
return NC;
}
void
clicked(Point coord)
{
Click c;
Brick *b, *bc;
c = findclick(coord);
if (c.d == -1)
return;
b = &level.board[c.d][c.x][c.y];
if(isfree(c)) {
if(level.c.d == -1) {
level.c = c;
b->clicked = 1;
b->redraw = 1;
} else if(eqcl(c, level.c)) {
level.c = NC;
b->clicked = 0;
b->redraw = 1;
} else {
bc = &level.board[level.c.d][level.c.x][level.c.y];
if(b->type == bc->type) {
clearbrick(c);
bc->clicked = 0;
clearbrick(level.c);
level.c = NC;
} else {
bc->clicked = 0;
bc->redraw = 1;
b->clicked = 1;
b->redraw = 1;
level.c = c;
}
}
updatelevel();
if(!canmove())
done();
}
}
void
undo(void)
{
int i, j, d, x, y;
if(level.remaining >= Tiles)
return;
for(i=1; i<=2; i++) {
j = level.remaining++;
d = level.hist[j].d;
x = level.hist[j].x;
y = level.hist[j].y;
level.board[d][x][y].which = TL;
level.board[d][x+1][y].which = TR;
level.board[d][x+1][y+1].which = BR;
level.board[d][x][y+1].which = BL;
level.board[d][x][y].redraw = 1;
}
updatelevel();
}
void
deselect(void)
{
Brick *b;
if(level.c.d == -1)
return;
b = &level.board[level.c.d][level.c.x][level.c.y];
level.c = NC;
b->clicked = 0;
b->redraw = 1;
updatelevel();
}
void
light(Point coord)
{
Click c = findclick(coord);
if (c.d == -1)
return;
if(eqcl(level.l, c))
return;
if (level.l.d != -1) {
level.board[level.l.d][level.l.x][level.l.y].redraw = 1;
level.l = NC;
}
if(isfree(c)) {
level.l = c;
level.board[c.d][c.x][c.y].redraw = 1;
}
updatelevel();
}
void
clearlevel(void)
{
Click c, cm;
for(c.d = Depth - 1; c.d >= 0; c.d--)
for(c.y = 0; c.y < Ly; c.y++)
for(c.x = 0; c.x < Lx; c.x++)
if(level.board[c.d][c.x][c.y].which == TL &&
isfree(c)) {
cm = cmatch(c, c.d);
if(cm.d != -1) {
clearbrick(cm);
clearbrick(c);
updatelevel();
clearlevel();
}
}
}