shithub: sce

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implement object shadows

pretty hacky for the time being, there's a lot of redundancy
a sprite db should be implemented to reduce duplication and simplify things a bit

--- a/dat.h

+++ b/dat.h

@@ -42,6 +42,7 @@

 };

 struct Pics{

 	Pic *p;

+	Pic *shadow;

 	int nf;

 	int nr;

 	int n;

--- a/drw.c

+++ b/drw.c

@@ -133,6 +133,39 @@

 }

 static void

+drawshadow(int x, int y, Pic *pic)

+{

+	int n, w, Δp, Δq;

+	u32int v, *p, *q;

+	Rectangle r;

+

+	q = pic->p;

+	r = Rect(x + pic->dx, y + pic->dy, pic->w, pic->h);

+	if(boundpic(&r, &q) < 0)

+		return;

+	Δq = pic->w - r.max.x;

+	p = fb + r.min.y * fbw + r.min.x;

+	Δp = fbw - r.max.x * scale;

+	while(r.max.y-- > 0){

+		w = r.max.x;

+		while(w-- > 0){

+			v = *q++;

+			if(v & 0xff << 24){

+				v = p[0];

+				v = (v & 0xff0000) * 0x96 / 0xff & 0xff0000

+				| (v & 0xff00) * 0x96 / 0xff & 0xff00

+				| (v & 0xff) * 0x96 / 0xff & 0xff;

+				for(n=0; n<scale; n++)

+					*p++ = v;

+			}else

+				p += scale;

+		}

+		q += Δq;

+		p += Δp;

+	}

+}

+

+static void

 compose(Path *pp, u32int c)

 {

 	int n, w, Δp;

@@ -159,6 +192,15 @@

 }

 static Pic *

+shafrm(Mobj *mo)

+{

+	Pics *p;

+

+	p = mo->pics;

+	return p->shadow + p->nf * mo->θ + tc % p->nf;

+}

+

+static Pic *

 frm(Mobj *mo)

 {

 	Pics *p;

@@ -182,14 +224,19 @@

 		drawpic(m->x, m->y, &m->t->pic);

 	/* FIXME: draw overlay (creep) */

 	/* FIXME: draw corpses */

-	for(m=map; m<map+mapwidth*mapheight; m++)

+	for(m=map; m<map+mapwidth*mapheight; m++){

 		for(lo=m->lo.lo; lo!=&m->lo; lo=lo->lo){

 			mo = lo->mo;

+			drawshadow(mo->p.x, mo->p.y, shafrm(mo));

+		}

+		for(lo=m->lo.lo; lo!=&m->lo; lo=lo->lo){

+			mo = lo->mo;

 			drawpic(mo->p.x, mo->p.y, frm(mo));

 		}

-	for(pp=path; pp<path+pathwidth*pathheight; pp++)

-		if(pp->blk != nil)

-			compose(pp, 0xff00ff);

+	}

+	//for(pp=path; pp<path+pathwidth*pathheight; pp++)

+	//	if(pp->blk != nil)

+	//		compose(pp, 0xff00ff);

 	/* FIXME: draw hud */

 	draw(screen, Rpt(p0, screen->r.max), display->black, nil, ZP);

 	mo = selected[0];

--- a/fs.c

+++ b/fs.c

@@ -96,7 +96,7 @@

 {

 	int i, r, f, nf;

 	char s[128];

-	Pic *pp;

+	Pic *pp, *ps;

 	if((nf = getfrm(name, id)) == 0)

 		return -1;

@@ -103,7 +103,8 @@

 	p->nf = nf;

 	p->nr = nr;

 	p->n = nf * nr;

-	pp = p->p = emalloc(nteam * nf * nr * sizeof *pp);

+	pp = p->p = emalloc(nteam * p->n * sizeof *pp);

+	ps = p->shadow = emalloc(p->n * sizeof *pp);

 	for(i=0; i<nteam; i++){

 		for(r=0; r<nr; r++)

 			for(f=0; f<nf; f++){

@@ -111,6 +112,11 @@

 				loadpic(s, pp++);

 			}

 	}

+	for(r=0; r<nr; r++)

+		for(f=0; f<nf; f++){

+			snprint(s, sizeof s, "%ss%s.%02d.%02d.bit", name, id, f, r);

+			loadpic(s, ps++);

+		}

 	return 0;

 }