[Add] Planets now have commodities. Nothing can be done with them yet ;)

dat/planet.xml

@@ -14,7 +14,10 @@
 			<tech>
 				<main>3</main>
 			</tech>
-			<commodities>1</commodities>
+			<commodities>
+				<commodity>Food</commodity>
+				<commodity>Ore</commodity>
+			</commodities>
 		</general>
 		<GFX>
       <space>konosphere.png</space>
@@ -35,7 +38,10 @@
 			<tech>
 				<main>4</main>
 			</tech>
-			<commodities>1</commodities>
+			<commodities>
+				<commodity>Food</commodity>
+				<commodity>Ore</commodity>
+			</commodities>
 		</general>
 		<GFX>
       <space>saracraft.png</space>
@@ -56,7 +62,9 @@
 			<tech>
 				<main>5</main>
 			</tech>
-			<commodities>1</commodities>
+			<commodities>
+				<commodity>Food</commodity>
+			</commodities>
 		</general>
 		<GFX>
       <space>station00.png</space>

src/economy.c

@@ -33,6 +33,17 @@ void credits2str(char* str, unsigned int credits, int decimals) {
 	else snprintf(str, 16, "%d", credits);
 }
 
+// Get a commodity.
+Commodity* commodity_get(const char* name) {
+	int i;
+	for(i = 0; i < commodity_nstack; i++)
+		if(strcmp(commodity_stack[i].name, name)==0)
+			return &commodity_stack[i];
+	
+	WARN("Commodity '%s' not found in stack", name);
+	return NULL;
+}
+
 // Free a commodity.
 static void commodity_freeOne(Commodity* com) {
 	if(com->name) free(com->name);

src/land.c

@@ -69,16 +69,22 @@ static void news_close(char* str);
 
 // The local market.
 static void commodity_exchange(void) {
+	int i;
+	char** goods;
   secondary_wid = window_create("Commodity Exchange", -1, -1,
 				COMMODITY_WIDTH, COMMODITY_HEIGHT);
 
   window_addButton(secondary_wid, -20, 20,
         BUTTON_WIDTH, BUTTON_HEIGHT, "btnCommodityClose",
         "Close", commodity_exchange_close);
+
+	goods = malloc(sizeof(char*)*planet->ncommodities);
+	for(i = 0; i < planet->ncommodities; i++)
+		goods[i] = strdup(planet->commodities[i]->name);
 	
 	window_addList(secondary_wid, 20, -40,
-				COMMODITY_WIDTH-30, COMMODITY_HEIGHT-80-BUTTON_HEIGHT,
+				100, COMMODITY_HEIGHT-80-BUTTON_HEIGHT,
-				"lstGoods", NULL, 0, 0, NULL);
+				"lstGoods", goods, planet->ncommodities, 0, NULL);
 }
 
 static void commodity_exchange_close(char* str) {

src/space.c

@@ -391,6 +391,18 @@ static Planet* planet_get(const char* name) {
 									}
 								} while((ccur = ccur->next));
 							}
+							else if(xml_isNode(cur, "commodities")) {
+								ccur = cur->children;
+								do {
+									if(xml_isNode(ccur, "commodity")) {
+										tmp->commodities = realloc(tmp->commodities,
+													(tmp->ncommodities+1) * sizeof(Commodity*));
+										tmp->commodities[tmp->ncommodities] =
+													commodity_get(xml_get(ccur));
+										tmp->ncommodities++;
+									}
+								} while((ccur = ccur->next));
+							}
             } while((cur = cur->next));
           }
         } while((node = node->next));
@@ -418,6 +430,8 @@ static Planet* planet_get(const char* name) {
 		MELEMENT((planet_hasService(tmp, PLANET_SERVICE_OUTFITS) ||
 					planet_hasService(tmp, PLANET_SERVICE_SHIPYARD)) &&
 					(flags&FLAG_TECHSET)==0, "tech");
+		MELEMENT(planet_hasService(tmp, PLANET_SERVICE_COMMODITY) &&
+					(tmp->ncommodities==0), "commodity");
 #undef MELEMENT
   } else
     WARN("No planet found matching name '%s'", name);

src/space.h

@@ -1,6 +1,7 @@
 #pragma once
 #include "faction.h"
 #include "opengl.h"
+#include "economy.h"
 #include "pilot.h"
 
 #define MIN_HYPERSPACE_DIST 1500
@@ -55,6 +56,8 @@ typedef struct Planet_ {
   char* description;  			// Planet description.
   char* bar_description; 		// Spaceport bar description.
   unsigned int services;  	// Offered services.
+	Commodity** commodities; 	// Commodities sold.
+	int ncommodities;					// Amount in stock.
 
 	// tech[0] stores global tech level (everything that and below) while
 	// tech[1-PLANET_TECH_MAX] stores the unique tech levels.