gameplay: example money, money fountain, ped money drop and player ID systems

resources/[gameplay]/[examples]/money-fountain/mapdata.lua

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+-- define the money fountain list (SHARED SCRIPT)
+moneyFountains = {}
+
+-- index to know what to remove
+local fountainIdx = 1
+
+AddEventHandler('getMapDirectives', function(add)
+    -- add a 'money_fountain' map directive
+    add('money_fountain', function(state, name)
+        return function(data)
+            local coords = data[1]
+            local amount = data.amount or 100
+
+            local idx = fountainIdx
+            fountainIdx += 1
+
+            moneyFountains[idx] = {
+                id = name,
+                coords = coords,
+                amount = amount
+            }
+
+            state.add('idx', idx)
+        end
+    end, function(state)
+        moneyFountains[state.idx] = nil
+    end)
+end)