From df45ed7b1c6efa67e93a498495ad48d4d42e2eef Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Tue, 19 Feb 2013 02:33:12 -0500
Subject: Make demo smoother.

---
diff --git a/src/main.c b/src/main.c
index 6d521be..6a1100f 100644
--- a/src/main.c
+++ b/src/main.c
@@ -8,11 +8,11 @@
 
 #define DEMO()                                                                 \
 	do {                                                                   \
-		vp->x = x * map->tilewidth + map->tilewidth / 2 - vp->w / 2;   \
-		vp->y = y * map->tileheight + map->tileheight / 2 - vp->h / 2; \
+		vp->x = x + map->tilewidth / 2 - vp->w / 2;                    \
+		vp->y = y + map->tileheight / 2 - vp->h / 2;                   \
 		render_area_to_viewport(a, vp);                                \
 		SDL_Flip(vp->screen);                                          \
-		SDL_Delay(100);                                                \
+		SDL_Delay(10);                                                 \
 	} while (0)
 
 int
@@ -71,19 +71,19 @@ main(void)
 	}
 
 	/* Demo */
-	x = 19;
-	y = 38;
-	for (; y > 34; y -= 1) DEMO(); /* Up */
-	for (; x < 23; x += 1) DEMO(); /* Right */
-	for (; y > 16; y -= 1) DEMO(); /* Up */
-	for (; x > 15; x -= 1) DEMO(); /* Left */
-	for (; y < 25; y += 1) DEMO(); /* Down */
-	for (; x >  4; x -= 1) DEMO(); /* Left */
-	for (; y > 18; y -= 1) DEMO(); /* Up */
-	for (; x <  9; x += 1) DEMO(); /* Right */
-	for (; y >  5; y -= 1) DEMO(); /* Up */
-	for (; x < 15; x += 1) DEMO(); /* Right */
-	for (; y >  1; y -= 1) DEMO(); /* Up */
+	x = 19 * map->tilewidth ;
+	y = 38 * map->tileheight;
+	for (; y > 34 * map->tileheight; y -= 2) DEMO(); /* Up */
+	for (; x < 23 * map->tilewidth ; x += 2) DEMO(); /* Right */
+	for (; y > 16 * map->tileheight; y -= 2) DEMO(); /* Up */
+	for (; x > 15 * map->tilewidth ; x -= 2) DEMO(); /* Left */
+	for (; y < 25 * map->tileheight; y += 2) DEMO(); /* Down */
+	for (; x >  4 * map->tilewidth ; x -= 2) DEMO(); /* Left */
+	for (; y > 18 * map->tileheight; y -= 2) DEMO(); /* Up */
+	for (; x <  9 * map->tilewidth ; x += 2) DEMO(); /* Right */
+	for (; y >  5 * map->tileheight; y -= 2) DEMO(); /* Up */
+	for (; x < 15 * map->tilewidth ; x += 2) DEMO(); /* Right */
+	for (; y >  1 * map->tileheight; y -= 2) DEMO(); /* Up */
 
 	quit(0);
 
--
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