Add pawn shop and slot-machine gold economy

data/resources.lua

@@ -5,6 +5,7 @@ return {
     wood = {
         name         = "Wood",
         weight       = 2,           -- carry-weight units per item
+        goldValue    = 1,
         color        = {0.55, 0.35, 0.15},  -- placeholder render colour
         harvestTime  = 3.0,         -- seconds to harvest one batch
         yieldMin     = 2,           -- min items per harvest
@@ -16,6 +17,7 @@ return {
     iron = {
         name         = "Iron",
         weight       = 5,
+        goldValue    = 4,
         color        = {0.60, 0.60, 0.65},
         harvestTime  = 5.0,
         yieldMin     = 1,
@@ -27,6 +29,7 @@ return {
     stone = {
         name         = "Stone",
         weight       = 4,
+        goldValue    = 1,
         color        = {0.50, 0.50, 0.50},
         harvestTime  = 4.0,
         yieldMin     = 2,
@@ -38,6 +41,7 @@ return {
     rope = {
         name         = "Rope",
         weight       = 1,
+        goldValue    = 2,
         color        = {0.75, 0.70, 0.40},
         harvestTime  = 2.0,
         yieldMin     = 1,
@@ -49,6 +53,7 @@ return {
     food = {
         name         = "Food",
         weight       = 1,
+        goldValue    = 1,
         color        = {0.90, 0.30, 0.30},
         harvestTime  = 1.5,
         yieldMin     = 1,
@@ -60,11 +65,24 @@ return {
     cloth = {
         name         = "Cloth",
         weight       = 1,
+        goldValue    = 3,
         color        = {0.85, 0.85, 0.90},
         harvestTime  = 2.5,
         yieldMin     = 1,
         yieldMax     = 2,
         sourceTiles  = {"grass"},
         biomes       = {"plains"},
     },
+
+    gold = {
+        name         = "Gold",
+        weight       = 0,
+        goldValue    = 0,
+        color        = {0.98, 0.82, 0.20},
+        harvestTime  = 0,
+        yieldMin     = 0,
+        yieldMax     = 0,
+        sourceTiles  = {},
+        biomes       = {},
+    },
 }

src/inventory/inventory.lua

@@ -41,6 +41,16 @@ function Inventory:add(resourceType, amount)
     return actual
 end
 
+-- Add `amount` units even if it exceeds the normal carry capacity.
+-- Used for special cases like casino payouts that should remain re-bettable.
+function Inventory:forceAdd(resourceType, amount)
+    if amount <= 0 then return 0 end
+
+    self._items[resourceType] = (self._items[resourceType] or 0) + amount
+    self._weight = self._weight + amount * unitWeight(resourceType)
+    return amount
+end
+
 -- Remove `amount` units. Returns actual amount removed.
 function Inventory:remove(resourceType, amount)
     local have   = self._items[resourceType] or 0

src/inventory/supplydepot.lua

@@ -63,14 +63,21 @@ end
 
 -- Deposit all items from `inventory` into the depot.
 function SupplyDepot:depositAll(inventory)
-    local items = inventory:clear()
+    local items = inventory:getItems()
+    local deposited = {}
     for rtype, amt in pairs(items) do
-        self:add(rtype, amt)
-        if self.eventBus then
-            self.eventBus:publish("resource_deposited", rtype, amt)
+        if rtype ~= "gold" and amt > 0 then
+            local removed = inventory:remove(rtype, amt)
+            if removed > 0 then
+                self:add(rtype, removed)
+                deposited[rtype] = removed
+                if self.eventBus then
+                    self.eventBus:publish("resource_deposited", rtype, removed)
+                end
+            end
         end
     end
-    return items
+    return deposited
 end
 
 -- Withdraw `amount` of `resourceType` into `inventory`. Returns actual withdrawn.