From 2bc98ed29afcb79c9cdfab6f0940378e4f195280 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Tue, 19 Feb 2013 17:34:25 -0500
Subject: Limit surfaces to 8 bpp.  Set keys and palettes.

Also clean up main() a bit more.
---
diff --git a/src/area.c b/src/area.c
index 12cbc6c..f8857b2 100644
--- a/src/area.c
+++ b/src/area.c
@@ -26,11 +26,33 @@ area_new(struct map *map)
 static void
 blit_map_layers(struct area *area)
 {
+	SDL_Color colors[256];
+	int i;
+	SDL_Rect dstrect;
+
+	for (i = 0; i < 256; ++i) {
+		colors[i].r = (i % 8) * 36;
+		colors[i].g = (i % 64 / 8) * 36;
+		colors[i].b = (i / 64) * 85;
+	}
+
+	dstrect.x = 0;
+	dstrect.y = 0;
+	dstrect.w = area->map->width * area->map->tilewidth;
+	dstrect.h = area->map->height * area->map->tileheight;
+
 	area->map_layers[AREA_LAYER_BOT] = SDL_CreateRGBSurface(
 			SDL_HWSURFACE | SDL_SRCCOLORKEY,
 			area->map->width * area->map->tilewidth,
 			area->map->height * area->map->tileheight,
-			32, 0, 0, 0, 0);
+			8, 0, 0, 0, 0);
+	SDL_FillRect(area->map_layers[AREA_LAYER_BOT], &dstrect,
+			SDL_MapRGB(area->map_layers[AREA_LAYER_BOT]->format,
+				0xFC, 0x00, 0xFF));
+	SDL_SetColorKey(area->map_layers[AREA_LAYER_BOT], SDL_SRCCOLORKEY,
+			SDL_MapRGB(area->map_layers[AREA_LAYER_BOT]->format,
+				0xFC, 0x00, 0xFF));
+	SDL_SetColors(area->map_layers[AREA_LAYER_BOT], colors, 0, 256);
 	blit_map_layer(area, MAP_LAYER_GROUND, AREA_LAYER_BOT);
 	blit_map_layer(area, MAP_LAYER_OBJ_LOW, AREA_LAYER_BOT);
 
@@ -38,14 +60,28 @@ blit_map_layers(struct area *area)
 			SDL_HWSURFACE | SDL_SRCCOLORKEY,
 			area->map->width * area->map->tilewidth,
 			area->map->height * area->map->tileheight,
-			32, 0, 0, 0, 0);
+			8, 0, 0, 0, 0);
+	SDL_FillRect(area->map_layers[AREA_LAYER_MID], &dstrect,
+			SDL_MapRGB(area->map_layers[AREA_LAYER_MID]->format,
+				0xFC, 0x00, 0xFF));
+	SDL_SetColorKey(area->map_layers[AREA_LAYER_MID], SDL_SRCCOLORKEY,
+			SDL_MapRGB(area->map_layers[AREA_LAYER_MID]->format,
+				0xFC, 0x00, 0xFF));
+	SDL_SetColors(area->map_layers[AREA_LAYER_MID], colors, 0, 256);
 	blit_map_layer(area, MAP_LAYER_OBJ_MID, AREA_LAYER_MID);
 
 	area->map_layers[AREA_LAYER_TOP] = SDL_CreateRGBSurface(
 			SDL_HWSURFACE | SDL_SRCCOLORKEY,
 			area->map->width * area->map->tilewidth,
 			area->map->height * area->map->tileheight,
-			32, 0, 0, 0, 0);
+			8, 0, 0, 0, 0);
+	SDL_FillRect(area->map_layers[AREA_LAYER_TOP], &dstrect,
+			SDL_MapRGB(area->map_layers[AREA_LAYER_TOP]->format,
+				0xFC, 0x00, 0xFF));
+	SDL_SetColorKey(area->map_layers[AREA_LAYER_TOP], SDL_SRCCOLORKEY,
+			SDL_MapRGB(area->map_layers[AREA_LAYER_TOP]->format,
+				0xFC, 0x00, 0xFF));
+	SDL_SetColors(area->map_layers[AREA_LAYER_TOP], colors, 0, 256);
 	blit_map_layer(area, MAP_LAYER_OBJ_HIGH, AREA_LAYER_TOP);
 }
 
@@ -60,7 +96,6 @@ blit_map_layer(struct area *area, enum map_layer map_layer,
 	Uint32 mts_lastgid;
 	SDL_Rect tilerect, layerrect;
 
-	SDL_SetColorKey(area->map_layers[area_layer], SDL_SRCCOLORKEY, 0);
 	for (i = 0; i < area->map->width * area->map->height; ++i) {
 		gid = area->map->layers[map_layer].tiles[i];
 		if (gid == 0) {
@@ -138,7 +173,7 @@ render_area_to_surface(struct area *area, SDL_Rect *arearect,
 	/* Fast fill with black to avoid artifacts in off-map pixels. */
 	/* NB: This is gray, at least temporarily. */
 	SDL_FillRect(surface, &dstrect,
-			SDL_MapRGB(surface->format, 63, 63, 63));
+			SDL_MapRGB(surface->format, 0, 0, 0));
 
 	/* For demo */
 	tmprect.x = dstrect.x + 120 -  8;
diff --git a/src/main.c b/src/main.c
index 6a1100f..498bb26 100644
--- a/src/main.c
+++ b/src/main.c
@@ -13,6 +13,7 @@
 		render_area_to_viewport(a, vp);                                \
 		SDL_Flip(vp->screen);                                          \
 		SDL_Delay(10);                                                 \
+		++i;                                                           \
 	} while (0)
 
 int
@@ -20,41 +21,40 @@ main(void)
 {
 	struct viewport *vp;
 	struct map *map;
-	struct image *img;
+#if 0
 	struct map_tileset *ts;
 	struct map_exit *e;
+#endif
 	struct area *a;
+	SDL_Color colors[256];
+	int i;
+	Uint32 start, end;
 	int x, y;
 
 	init();
-	vp = init_viewport(240, 160, 32);
+	vp = init_viewport(240, 160, 8);
 
 	map = map_get("data/forest1-8bit.tmx");
 	a = area_new(map);
 
-	debug("screen: bpp: %u, masks: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x",
-			vp->screen->format->BitsPerPixel,
-			vp->screen->format->Rmask, vp->screen->format->Gmask,
-			vp->screen->format->Bmask, vp->screen->format->Amask);
-	img = img_png_get("../forest-6-layer-test_ground.png");
-	debug("image:  bpp: %u, masks: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x",
-			img->image->format->BitsPerPixel,
-			img->image->format->Rmask, img->image->format->Gmask,
-			img->image->format->Bmask, img->image->format->Amask);
-	img_png_free(img);
-	img = img_png_get("data/tilesets/mountain_landscape_19-16.png");
-	debug("image:  bpp: %u, masks: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x",
-			img->image->format->BitsPerPixel,
-			img->image->format->Rmask, img->image->format->Gmask,
-			img->image->format->Bmask, img->image->format->Amask);
-	img_png_free(img);
-	img = img_png_get("data/tilesets/mountain_landscape_19-16-8bit.png");
-	debug("image:  bpp: %u, masks: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x",
-			img->image->format->BitsPerPixel,
-			img->image->format->Rmask, img->image->format->Gmask,
-			img->image->format->Bmask, img->image->format->Amask);
-	img_png_free(img);
+	for (i = 0; i < 256; ++i) {
+		colors[i].r = (i % 8) * 36;
+		colors[i].g = (i % 64 / 8) * 36;
+		colors[i].b = (i / 64) * 85;
+	}
+	if (!SDL_SetPalette(vp->screen, SDL_LOGPAL, colors, 0, 256)) {
+		warn("Failed to set palette");
+	}
+	for (i = 0; i < 256; ++i) {
+		colors[i].r = i;
+		colors[i].g = i;
+		colors[i].b = i;
+	}
+/*	if (!SDL_SetPalette(vp->screen, SDL_PHYSPAL, colors, 0, 256)) {
+		warn("Failed to set palette");
+	}*/
 
+#if 0
 	debug("Map dimensions: %dx%d", map->width, map->height);
 	for (ts = map->tilesets_head; ts != NULL; ts = ts->next) {
 		debug("Tileset name: %s", ts->tileset->name);
@@ -69,8 +69,11 @@ main(void)
 				e->target_map->width, e->target_map->height,
 				e->target_x_coord, e->target_y_coord);
 	}
+#endif
 
 	/* Demo */
+	i = 0;
+	start = SDL_GetTicks();
 	x = 19 * map->tilewidth ;
 	y = 38 * map->tileheight;
 	for (; y > 34 * map->tileheight; y -= 2) DEMO(); /* Up */
@@ -84,6 +87,8 @@ main(void)
 	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 */
+	end = SDL_GetTicks();
+	debug("Rendered %d frames in %d milliseconds", i, end - start);
 
 	quit(0);
 
diff --git a/src/resources/map.c b/src/resources/map.c
index 0719a14..6c96650 100644
--- a/src/resources/map.c
+++ b/src/resources/map.c
@@ -461,6 +461,10 @@ tmx_tileset_el_start(void *pv, const char *name, const char **attr)
 			}
 			sprintf(path, "%s/%s", dirname, source);
 			img = img_png_get(path);
+			/* TODO: Get the color key from the trans attribute. */
+			SDL_SetColorKey(img->image, SDL_SRCCOLORKEY,
+					SDL_MapRGB(img->image->format,
+						0xFC, 0x00, 0xFF));
 			free(source);
 		} else if (ts->type == TILESET_TYPE_COLLISION) {
 			ts->collision_tiles = malloc(ts->width * ts->height *
diff --git a/src/viewport.c b/src/viewport.c
index 1a6e9dc..078d37c 100644
--- a/src/viewport.c
+++ b/src/viewport.c
@@ -19,7 +19,7 @@ init_viewport(int width, int height, int bpp)
 
 	debug("Setting video mode...");
 	vp->screen = SDL_SetVideoMode(width, height, bpp,
-			SDL_HWSURFACE | SDL_ANYFORMAT);
+			SDL_HWSURFACE | SDL_HWPALETTE);
 	if (vp->screen == NULL) {
 		err(1, "Failed to set video mode (%s)", SDL_GetError());
 	}
--
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