shithub: etoys

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isometric: draw tall tile sprites and change the map in real time

--- a/isometric.c

+++ b/isometric.c

@@ -39,7 +39,7 @@

 char *map[] = {

 	"eeeee",

 	"eefee",

-	"efefe",

+	"efbfe",

 	"eefee",

 	"eefee"

 };

@@ -132,7 +132,8 @@

 	cell.y *= TH;

 	p = toscreen(cell);

 	p.x -= TW/2;

-	draw(screen, Rpt(p,addpt(p, Pt(TW,TH))), t->img, nil, ZP);

+	p.y -= Dy(t->img->r)-TH;

+	draw(screen, Rpt(p,addpt(p, Pt(TW,Dy(t->img->r)))), t->img, nil, ZP);

 }

 void

@@ -161,6 +162,25 @@

 }

 void

+lmb(Mouse *m)

+{

+	Point2 mp;

+	Point cell;

+	char buf[2];

+

+	mp = fromscreen(mpos);

+	if(mp.x < 0 || mp.y < 0)

+		return;

+	cell.x = mp.x/TW;

+	cell.y = mp.y/TH;

+	if(cell.y >= nelem(map) || cell.x >= strlen(map[cell.y]))

+		return;

+	snprint(buf, sizeof buf, "%c", map[cell.y][cell.x]);

+	if(eenter("tile id", buf, sizeof buf, m) > 0)

+		map[cell.y][cell.x] = buf[0];

+}

+

+void

 mmb(Mouse *m)

 {

 	enum {

@@ -225,7 +245,7 @@

 		case Emouse:

 			mpos = e.mouse.xy;

 			if((e.mouse.buttons&1) != 0)

-				worldrf.p = Pt2(e.mouse.xy.x,e.mouse.xy.y,1);

+				lmb(&e.mouse);

 			if((e.mouse.buttons&2) != 0)

 				mmb(&e.mouse);

 			redraw();