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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <geometry.h>
#include <event.h>
#include <keyboard.h>
enum {
Cbg,
Cfg,
Ctxtbg,
Cgrid0,
Cgrid1,
NCOLOR
};
enum {
TW = 32,
TH = 32
};
typedef struct Tile Tile;
struct Tile
{
char *name;
char id;
Image *img;
};
Image *pal[NCOLOR];
Tile tiles[] = {
{ .name = "tl", .id = 'n' },
{ .name = "tr", .id = 'e' },
{ .name = "bl", .id = 'w' },
{ .name = "br", .id = 's' },
{ .name = "hori", .id = 'H' },
{ .name = "vert", .id = 'V' },
{ .name = "grass", .id = 'g' }
};
RFrame worldrf;
char *map[] = {
"nHHHe",
"VgggV",
"VgggV",
"VgggV",
"wHHHs"
};
Point mpos;
Point2 spacegrid[10][10];
int showgrid;
Point
toscreen(Point2 p)
{
p = invrframexform(p, worldrf);
return Pt(p.x,p.y);
}
Point2
fromscreen(Point p)
{
return rframexform(Pt2(p.x,p.y,1), worldrf);
}
void
initpalette(void)
{
pal[Cbg] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DBlack);
pal[Cfg] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DDarkblue);
pal[Ctxtbg] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DPaleyellow);
pal[Cgrid0] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DRed);
pal[Cgrid1] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DBlue);
}
void
inittiles(void)
{
char path[256];
int fd, i;
for(i = 0; i < nelem(tiles); i++){
snprint(path, sizeof path, "asset/tile/%s.pic", tiles[i].name);
fd = open(path, OREAD);
tiles[i].img = readimage(display, fd, 0);
close(fd);
}
}
void
initgrid(void)
{
int i, j;
for(i = 0; i < nelem(spacegrid); i++)
for(j = 0; j < nelem(spacegrid[i]); j++)
spacegrid[i][j] = Pt2(j*TW, i*TH, 1);
}
void
drawstats(void)
{
Point2 mp, p;
char s[256];
mp = fromscreen(mpos);
snprint(s, sizeof s, "Global %v", mp);
stringbg(screen, addpt(screen->r.min, Pt(20,20)), pal[Cfg], ZP, font, s, pal[Ctxtbg], ZP);
p = Pt2(fmod(mp.x, TW),fmod(mp.y, TH),1);
snprint(s, sizeof s, "Local %v", p);
stringbg(screen, addpt(screen->r.min, Pt(20,20+font->height)), pal[Cfg], ZP, font, s, pal[Ctxtbg], ZP);
p = Pt2((int)mp.x/TW,(int)mp.y/TH,1);
snprint(s, sizeof s, "Cell %v", p);
stringbg(screen, addpt(screen->r.min, Pt(20,20+font->height*2)), pal[Cfg], ZP, font, s, pal[Ctxtbg], ZP);
}
void
drawgrid(void)
{
int i, j;
for(i = 0; i < nelem(spacegrid); i++)
line(screen, toscreen(spacegrid[i][0]), toscreen(spacegrid[i][nelem(spacegrid[i])-1]), Endsquare, Endsquare, 0, pal[Cgrid0], ZP);
for(j = 0; j < nelem(spacegrid[0]); j++)
line(screen, toscreen(spacegrid[0][j]), toscreen(spacegrid[nelem(spacegrid)-1][j]), Endsquare, Endsquare, 0, pal[Cgrid1], ZP);
}
void
drawtile(Tile *t, Point2 cell)
{
Point p;
cell.x *= TW;
cell.y *= TH;
p = toscreen(cell);
p.y -= Dy(t->img->r)-TH;
draw(screen, Rpt(p,addpt(p, Pt(TW,Dy(t->img->r)))), t->img, nil, ZP);
}
void
redraw(void)
{
Point2 dp;
int i, j;
char *row;
draw(screen, screen->r, pal[Cbg], nil, ZP);
for(i = 0; i < nelem(map); i++)
for(row = map[i]; *row; row++){
dp = Pt2((row-map[i]),i,1);
for(j = 0; j < nelem(tiles); j++)
if(tiles[j].id == *row)
drawtile(&tiles[j], dp);
}
drawstats();
if(showgrid)
drawgrid();
flushimage(display, 1);
}
void
mmb(Mouse *m)
{
enum {
SHOWGRID,
};
static char *items[] = {
[SHOWGRID] "toggle grid",
nil
};
static Menu menu = { .item = items };
switch(emenuhit(2, m, &menu)){
case SHOWGRID:
showgrid ^= 1;
break;
}
}
void
usage(void)
{
fprint(2, "usage: %s\n", argv0);
exits("usage");
}
void
main(int argc, char *argv[])
{
Event e;
GEOMfmtinstall();
ARGBEGIN{
default: usage();
}ARGEND;
if(argc > 0)
usage();
if(initdraw(nil, nil, nil) < 0)
sysfatal("initdraw: %r");
initpalette();
inittiles();
initgrid();
worldrf.p = Pt2(screen->r.min.x+Dx(screen->r)/2,screen->r.min.y+Dy(screen->r)/3,1);
worldrf.bx = Vec2(1,0);
worldrf.by = Vec2(0,1);
einit(Emouse|Ekeyboard);
redraw();
for(;;)
switch(event(&e)){
case Emouse:
mpos = e.mouse.xy;
if((e.mouse.buttons&2) != 0)
mmb(&e.mouse);
redraw();
break;
case Ekeyboard:
switch(e.kbdc){
case 'q':
case Kdel:
exits(0);
}
break;
}
}
void
eresized(int)
{
if(getwindow(display, Refnone) < 0)
sysfatal("resize failed");
worldrf.p = Pt2(screen->r.min.x+Dx(screen->r)/2,screen->r.min.y+Dy(screen->r)/3,1);
redraw();
}
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