From 953782576764dc42ba2abfc1097255f53060ce71 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Tue, 19 Feb 2013 14:27:16 -0500
Subject: Add struct map * member to struct area.

---
diff --git a/src/area.c b/src/area.c
index c01d826..12cbc6c 100644
--- a/src/area.c
+++ b/src/area.c
@@ -4,9 +4,8 @@
 #include "resources/map.h"
 #include "logging.h"
 
-static void blit_map_layers(struct map *, struct area *);
-static void blit_map_layer(struct map *, enum map_layer_id,
-		struct area *, enum area_layer_id);
+static void blit_map_layers(struct area *);
+static void blit_map_layer(struct area *, enum map_layer, enum area_layer);
 
 struct area *
 area_new(struct map *map)
@@ -18,40 +17,41 @@ area_new(struct map *map)
 		return NULL;
 	}
 
-	blit_map_layers(map, a);
+	a->map = map;
+	blit_map_layers(a);
 
 	return a;
 }
 
 static void
-blit_map_layers(struct map *map, struct area *area)
+blit_map_layers(struct area *area)
 {
 	area->map_layers[AREA_LAYER_BOT] = SDL_CreateRGBSurface(
 			SDL_HWSURFACE | SDL_SRCCOLORKEY,
-			map->width * map->tilewidth,
-			map->height * map->tileheight,
+			area->map->width * area->map->tilewidth,
+			area->map->height * area->map->tileheight,
 			32, 0, 0, 0, 0);
-	blit_map_layer(map, MAP_LAYER_GROUND, area, AREA_LAYER_BOT);
-	blit_map_layer(map, MAP_LAYER_OBJ_LOW, area, AREA_LAYER_BOT);
+	blit_map_layer(area, MAP_LAYER_GROUND, AREA_LAYER_BOT);
+	blit_map_layer(area, MAP_LAYER_OBJ_LOW, AREA_LAYER_BOT);
 
 	area->map_layers[AREA_LAYER_MID] = SDL_CreateRGBSurface(
 			SDL_HWSURFACE | SDL_SRCCOLORKEY,
-			map->width * map->tilewidth,
-			map->height * map->tileheight,
+			area->map->width * area->map->tilewidth,
+			area->map->height * area->map->tileheight,
 			32, 0, 0, 0, 0);
-	blit_map_layer(map, MAP_LAYER_OBJ_MID, area, AREA_LAYER_MID);
+	blit_map_layer(area, MAP_LAYER_OBJ_MID, AREA_LAYER_MID);
 
 	area->map_layers[AREA_LAYER_TOP] = SDL_CreateRGBSurface(
 			SDL_HWSURFACE | SDL_SRCCOLORKEY,
-			map->width * map->tilewidth,
-			map->height * map->tileheight,
+			area->map->width * area->map->tilewidth,
+			area->map->height * area->map->tileheight,
 			32, 0, 0, 0, 0);
-	blit_map_layer(map, MAP_LAYER_OBJ_HIGH, area, AREA_LAYER_TOP);
+	blit_map_layer(area, MAP_LAYER_OBJ_HIGH, AREA_LAYER_TOP);
 }
 
 static void
-blit_map_layer(struct map *map, enum map_layer_id map_layer,
-		struct area *area, enum area_layer_id area_layer)
+blit_map_layer(struct area *area, enum map_layer map_layer,
+		enum area_layer area_layer)
 {
 	int i;
 	Uint32 gid;
@@ -61,13 +61,14 @@ blit_map_layer(struct map *map, enum map_layer_id map_layer,
 	SDL_Rect tilerect, layerrect;
 
 	SDL_SetColorKey(area->map_layers[area_layer], SDL_SRCCOLORKEY, 0);
-	for (i = 0; i < map->width * map->height; ++i) {
-		gid = map->layers[map_layer].tiles[i];
+	for (i = 0; i < area->map->width * area->map->height; ++i) {
+		gid = area->map->layers[map_layer].tiles[i];
 		if (gid == 0) {
 			continue;
 		}
 		tile_found = 0;
-		for (mts = map->tilesets_head; mts != NULL; mts = mts->next) {
+		for (mts = area->map->tilesets_head;
+				mts != NULL; mts = mts->next) {
 			mts_lastgid = mts->firstgid +
 				mts->tileset->width * mts->tileset->height;
 			if (gid >= mts->firstgid && gid < mts_lastgid) {
@@ -78,8 +79,8 @@ blit_map_layer(struct map *map, enum map_layer_id map_layer,
 				tilerect.h = mts->tileset->tileheight;
 				tilerect.x *= tilerect.w;
 				tilerect.y *= tilerect.h;
-				layerrect.x = i % map->width;
-				layerrect.y = i / map->width;
+				layerrect.x = i % area->map->width;
+				layerrect.y = i / area->map->width;
 				layerrect.w = mts->tileset->tilewidth;
 				layerrect.h = mts->tileset->tileheight;
 				layerrect.x *= layerrect.w;
diff --git a/src/area.h b/src/area.h
index 84987b7..8fee049 100644
--- a/src/area.h
+++ b/src/area.h
@@ -5,13 +5,14 @@
 #include "viewport.h"
 #include "resources/map.h"
 
-enum area_layer_id {
+enum area_layer {
 	AREA_LAYER_BOT = 0,
 	AREA_LAYER_MID,
 	AREA_LAYER_TOP,
 	AREA_LAYERS_MAX
 };
 struct area {
+	struct map *map;
 	SDL_Surface *map_layers[AREA_LAYERS_MAX];
 };
 
diff --git a/src/resources/map.h b/src/resources/map.h
index 267eb30..2f4a60e 100644
--- a/src/resources/map.h
+++ b/src/resources/map.h
@@ -5,7 +5,7 @@
 #include "resource.h"
 #include "image.h"
 
-enum map_layer_id {
+enum map_layer {
 	MAP_LAYER_GROUND = 0,
 	MAP_LAYER_OBJ_LOW,
 	MAP_LAYER_OBJ_MID,
--
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