show recipes visually instead of describing them in text

src/ui/ItemProducers.cpp

@@ -0,0 +1,60 @@
+#include "ItemProducers.h"
+
+#include "GameConfig.h"
+#include "RecipesConfig.h"
+#include "Simulation.h"
+
+namespace
+{
+
+bool producesItem(const RecipeDef& recipe, const std::string& itemId)
+{
+    for (const RecipeOutput& output : recipe.outputs)
+    {
+        if (output.item == itemId)
+        {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool isAvailable(const RecipeDef& recipe, const Simulation& sim)
+{
+    if (recipe.building == BuildingType::Miner
+        || recipe.building == BuildingType::Assembler)
+    {
+        return sim.isRecipeUnlocked(recipe.id);
+    }
+    return sim.isBuildingUnlocked(recipe.building);
+}
+
+}  // namespace
+
+ItemProduction findItemProduction(const std::string& itemId, const Simulation& sim,
+                                  const GameConfig& config)
+{
+    ItemProduction result;
+
+    bool anyProducer = false;
+    for (const RecipeDef& recipe : config.recipes.recipes)
+    {
+        if (!producesItem(recipe, itemId)) { continue; }
+
+        anyProducer = true;
+        if (isAvailable(recipe, sim))
+        {
+            result.recipes.push_back(&recipe);
+        }
+    }
+
+    if (!result.recipes.empty())
+    {
+        result.origin = ItemOrigin::Produced;
+    }
+    else
+    {
+        result.origin = anyProducer ? ItemOrigin::Undiscovered : ItemOrigin::Salvaged;
+    }
+    return result;
+}