3 files changed, 33 insertions(+), 4 deletions(-)

M sim.c
M sim.h
M toy.c

@@ 553,3 553,16 @@ disk(FILE *f, Grid *g)
 	}
 	return g->w > 2 && g->h > 2;
 }
+
+void
+create(Grid *g, int w, int h)
+{
+	int i;
+	g->w = w;
+	g->h = h;
+	g->f = 0;
+	g->r = 1;
+	for(i = 0; i < w * h; ++i) {
+		g->data[i] = '.';
+	}
+}<
\ No newline at end of file

@@ 12,6 12,7 @@ typedef struct Grid {
 	char data[MAXSZ];
 } Grid;
 
-void print(Grid *g);
+char get(Grid *g, int x, int y);
 int run(Grid *g);
 int disk(FILE *f, Grid *g);
+void create(Grid *g, int w, int h);

@@ 37,6 37,8 @@ uint32_t *pixels;
 
 Rect2d selection;
 
+Grid g;
+
 Point2d
 Pt2d(int x, int y)
 {


@@ 46,6 48,14 @@ Pt2d(int x, int y)
 	return p;
 }
 
+Point2d
+clampt(Point2d p, int step)
+{
+	p.x = abs((p.x + step / 2) / step) * step;
+	p.y = abs((p.y + step / 2) / step) * step;
+	return p;
+}
+
 /* chr */
 
 int


@@ 196,14 206,18 @@ render(void)
 void
 domouse(SDL_Event *event)
 {
-	Point2d touch = Pt2d(
-		(event->motion.x - (PAD * ZOOM)) / ZOOM,
-		(event->motion.y - (PAD * ZOOM)) / ZOOM);
+	Point2d touch = clampt(
+		Pt2d(
+			(event->motion.x - (PAD * ZOOM)) / ZOOM,
+			(event->motion.y - (PAD * ZOOM)) / ZOOM),
+		8);
 	switch(event->type) {
 	case SDL_MOUSEBUTTONUP:
 		printf("mouse-up\n");
 		break;
 	case SDL_MOUSEBUTTONDOWN:
+		printf("%d,%d\n", touch.x / 8, touch.y / 8);
+		select(touch.x / 8, touch.y / 8, 1, 1);
 		printf("mouse-down\n");
 		break;
 	case SDL_MOUSEMOTION:


@@ 276,6 290,7 @@ main(int argc, char *argv[])
 	if(!init())
 		return error("Init", "Failure");
 
+	create(&g, HOR, VER);
 	newchr();
 	select(0, 0, 0, 0);
 	draw(pixels);