[Add] Buy/Sell cargo.

src/land.c

@@ -46,6 +46,8 @@ static Planet* planet = NULL;
 // Commodity excahnge.
 static void commodity_exchange(void);
 static void commodity_exchange_close(char* str);
+static void commodity_buy(char* str);
+static void commodity_sell(char* str);
 // Outfits.
 static void outfits(void);
 static void outfits_close(char* str);
@@ -78,12 +80,20 @@ static void commodity_exchange(void) {
         BUTTON_WIDTH, BUTTON_HEIGHT, "btnCommodityClose",
         "Close", commodity_exchange_close);
 
+	window_addButton(secondary_wid, -40-((BUTTON_WIDTH-20)/2), 20*2+BUTTON_HEIGHT,
+					(BUTTON_WIDTH-20)/2, BUTTON_HEIGHT, "btnCommodityBuy",
+					"Buy", commodity_buy);
+	
+	window_addButton(secondary_wid, -20, 20*2+BUTTON_HEIGHT,
+					(BUTTON_WIDTH-20)/2, BUTTON_HEIGHT, "btnCommoditySell",
+					"Sell", commodity_buy);
+
 	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,
-				100, COMMODITY_HEIGHT-80-BUTTON_HEIGHT,
+				COMMODITY_WIDTH-BUTTON_WIDTH-60, COMMODITY_HEIGHT-80-BUTTON_HEIGHT,
 				"lstGoods", goods, planet->ncommodities, 0, NULL);
 }
 
@@ -92,6 +102,44 @@ static void commodity_exchange_close(char* str) {
     window_destroy(secondary_wid);
 }
 
+static void commodity_buy(char* str) {
+	(void)str;
+	char* comname;
+	Commodity* com;
+	int q;
+
+	q = 10;
+
+	comname = toolkit_getList(secondary_wid, "lstGoods");
+	com = commodity_get(comname);
+
+	if(player_credits <= q * com->medium) {
+		toolkit_alert("Not enough Scred!");
+		return;
+	}
+	else if(player->cargo_free <= 0) {
+		toolkit_alert("not enough free space!");
+		return;
+	}
+
+	q = pilot_addCargo(player, com, q);
+	player_credits -= q * com->medium;
+}
+
+static void commodity_sell(char* str) {
+	(void)str;
+	char* comname;
+	Commodity* com;
+	int q;
+
+	q = 10;
+	comname = toolkit_getList(secondary_wid, "lstGoods");
+	com = commodity_get(comname);
+
+	q = pilot_rmCargo(player, com, q);
+	player_credits += q * com->medium;
+}
+
 static void outfits(void) {
 	char** outfits;
 	int noutfits;

src/pilot.c

@@ -500,7 +500,7 @@ int pilot_addCargo(Pilot* pilot, Commodity* cargo, int quantity) {
 	
 	// Must add another one.
 	pilot->commodities = realloc(pilot->commodities,
-				sizeof(PilotCommodity) * pilot->ncommodities);
+				sizeof(PilotCommodity) * (pilot->ncommodities+1));
 	pilot->commodities[pilot->ncommodities].commodity = cargo;
 	if(pilot->cargo_free < quantity)
 		q = pilot->cargo_free;
@@ -519,7 +519,7 @@ int pilot_rmCargo(Pilot* pilot, Commodity* cargo, int quantity) {
 	q = quantity;
 	for(i = 0; i < pilot->ncommodities; i++)
 		if(pilot->commodities[i].commodity == cargo) {
-			if(quantity > pilot->commodities[i].quantity) {
+			if(quantity >= pilot->commodities[i].quantity) {
 				q = pilot->commodities[i].quantity;
 				
 				// Remove cargo.
@@ -535,10 +535,7 @@ int pilot_rmCargo(Pilot* pilot, Commodity* cargo, int quantity) {
 			return q;
 		}
 	
-	WARN("Trying to remove %d cargo '%s' from pilot '%s' when it doesn't exist",
+	return 0;
-				quantity, cargo->name, pilot->name);
-
-	return -1;
 }
 
 // ==Init pilot.===========================================

src/player.c

@@ -493,7 +493,7 @@ void player_render(void) {
 	
 	// Cargo and co.
 	if(player->ncommodities > 0) {
-		j -= gl_smallFont.h - 5;
+		j -= gl_smallFont.h + 5;
 		gl_print(&gl_smallFont,
 					gui.misc.x + 8, j, &cConsole, "Cargo");