From 9d0d8ac5697d25ce331d0e0bae69bedaa4abad40 Mon Sep 17 00:00:00 2001
From: rgl <devnull@localhost>
Date: Wed, 5 Feb 2020 11:19:55 +0100
Subject: load a bob and let him move around.

---
 dat.h  |  8 ++++++++
 main.c | 39 ++++++++++++++++++++++++++++++---------
 2 files changed, 38 insertions(+), 9 deletions(-)

diff --git a/dat.h b/dat.h
index 0ccea6f..21e2891 100644
--- a/dat.h
+++ b/dat.h
@@ -6,3 +6,11 @@ enum
 	K→,
 	Ke
 };
+
+typedef struct Sprite Sprite;
+
+struct Sprite
+{
+	Point p;
+	Memimage *spr;
+};
diff --git a/main.c b/main.c
index 244097c..065d8cf 100644
--- a/main.c
+++ b/main.c
@@ -14,6 +14,7 @@ double Δt;
 Image *screenb;
 Memimage *fb;
 Memimage *bg, *fg;
+Sprite bob;
 
 Rune keys[Ke] = {
  [K↑]	Kup,
@@ -46,6 +47,22 @@ rgb(ulong c)
 	return i;
 }
 
+Memimage*
+loadtexture(char *path)
+{
+	Memimage *i;
+	int fd;
+
+	fd = open(path, OREAD);
+	if(fd < 0)
+		sysfatal("open: %r");
+	i = readmemimage(fd);
+	if(i == nil)
+		sysfatal("readmemimage: %r");
+	close(fd);
+	return i;
+}
+
 void
 kbdproc(void*)
 {
@@ -114,16 +131,9 @@ void
 redraw(void)
 {
 	Rectangle r;
-	Point p;
-	static Point incp = {1,1};
 
 	memimagedraw(fb, fb->r, bg, ZP, nil, ZP, SoverD);
-	for(p.y = 0; p.y < Dy(fb->r); p.y++)
-		for(p.x = 0; p.x < Dx(fb->r); p.x++)
-			if(p.x%15 == 0 || p.y%15 == 0)
-				memimagedraw(fb, Rpt(p, addpt(p, incp)), fg, ZP, nil, ZP, SoverD);
-	/*for(p = ZP; ptinrect(p, fb->r); p.x++, p.y++)
-		memimagedraw(fb, Rpt(p, addpt(p, Pt(1,1))), fg, ZP, nil, ZP, SoverD);*/
+	memimagedraw(fb, Rpt(subpt(bob.p, Pt(Dx(bob.spr->r),Dy(bob.spr->r))), addpt(bob.p, Pt(32,32))), bob.spr, ZP, nil, ZP, SoverD);
 	for(r = fb->r; r.min.y < fb->r.max.y; r.min.y++){
 		r.max.y = r.min.y+1;
 		loadimage(screenb, r, byteaddr(fb, r.min), bytesperline(r, fb->depth));
@@ -176,6 +186,8 @@ threadmain(int argc, char *argv[])
 	resetfb();
 	bg = rgb(DWhite);
 	fg = rgb(DBlack);
+	bob.spr = loadtexture("assets/bob.pic");
+	bob.p = divpt(fb->r.max, 2);
 	drawc = chancreate(1, 0);
 	display->locking = 1;
 	unlockdisplay(display);
@@ -188,7 +200,7 @@ threadmain(int argc, char *argv[])
 			{mctl->c, &mctl->Mouse, CHANRCV},
 			{mctl->resizec, nil, CHANRCV},
 			{drawc, nil, CHANRCV},
-			{nil, nil, CHANEND}
+			{nil, nil, CHANNOBLK}
 		};
 		switch(alt(a)){
 		case MOUSE: mouse(); break;
@@ -198,5 +210,14 @@ threadmain(int argc, char *argv[])
 		t = nsec();
 		Δt = (t-t0)/1e9;
 		t0 = t;
+		if(kdown & 1<<K↑)
+			bob.p.y--;
+		if(kdown & 1<<K↓)
+			bob.p.y++;
+		if(kdown & 1<<K←)
+			bob.p.x--;
+		if(kdown & 1<<K→)
+			bob.p.x++;
+		sleep(16);
 	}
 }
-- 
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