From c9c5c30b0d7939f6cc5308d8066d4343906eb81f Mon Sep 17 00:00:00 2001
From: mlangkabel <malte.langkabel@gmail.com>
Date: Mon, 20 Apr 2026 22:19:43 +0200
Subject: [PATCH] change input/output buffer item count display

---
 docs/requirements.md             |  2 +-
 src/ui/SelectedBuildingPanel.cpp | 72 ++++++++++++++++++++++++++++----
 src/ui/SelectedBuildingPanel.h   |  4 ++
 3 files changed, 69 insertions(+), 9 deletions(-)

diff --git a/docs/requirements.md b/docs/requirements.md
index 3708a3c..2a85a7f 100644
--- a/docs/requirements.md
+++ b/docs/requirements.md
@@ -194,7 +194,7 @@ The screen is divided into three vertical sections:
 ### Selected Building Panel
 
 - REQ-UI-EMPTY-SELECTION: When no building is selected, the panel is empty.
-- REQ-UI-SINGLE-SELECTION: When one building is selected, the panel shows: building name, current recipe or blueprint selection, input buffer contents, and output buffer contents.
+- REQ-UI-SINGLE-SELECTION: When one building is selected, the panel shows: building name, current recipe or blueprint selection, input buffer contents, and output buffer contents. Buffer counts are displayed as `a/b` where `a` is the current item count and `b` is the per-cycle amount (items consumed per run for inputs; items produced per run for outputs).
 - REQ-UI-MULTI-SELECT: The player selects multiple buildings by box-drag or by Ctrl+clicking individual buildings to add or remove them from the selection.
 - REQ-UI-MULTI-SELECTION: When multiple buildings are selected, the panel shows how many of each building type are selected. No per-building detail is shown.
 - REQ-UI-CONFIG-INLINE: Recipe, blueprint, ship stance, and target priority configuration for a selected building is shown and changed inline within this panel.
diff --git a/src/ui/SelectedBuildingPanel.cpp b/src/ui/SelectedBuildingPanel.cpp
index 240bacf..fdb454f 100644
--- a/src/ui/SelectedBuildingPanel.cpp
+++ b/src/ui/SelectedBuildingPanel.cpp
@@ -193,21 +193,44 @@ void SelectedBuildingPanel::buildSingle(EntityId id)
 
 void SelectedBuildingPanel::refreshBuffers(const Building* b)
 {
+    const RecipeDef* recipe  = findRecipe(b);
+    const ShipDef*   shipDef = (b->type == BuildingType::Shipyard)
+                                ? findShipDef(b->recipeId)
+                                : nullptr;
+
     QString bufText;
+
     if (!b->inputBuffer.counts.empty())
     {
         bufText += "Input: ";
         for (const std::pair<const ItemType, int>& entry : b->inputBuffer.counts)
         {
-            const std::map<ItemType, int>::const_iterator cap =
-                b->inputBuffer.caps.find(entry.first);
-            const int capVal = (cap != b->inputBuffer.caps.end()) ? cap->second : 0;
+            int perCycle = 0;
+            if (recipe)
+            {
+                for (const RecipeIngredient& ing : recipe->inputs)
+                {
+                    if (ing.item == entry.first.id) { perCycle = ing.amount; break; }
+                }
+            }
+            else if (shipDef)
+            {
+                for (const RecipeIngredient& mat : shipDef->blueprint.materials)
+                {
+                    if (mat.item == entry.first.id) { perCycle = mat.amount; break; }
+                }
+            }
             bufText += QString::fromStdString(entry.first.id)
-                + ": " + QString::number(entry.second)
-                + "/" + QString::number(capVal) + "  ";
+                + ": " + QString::number(entry.second);
+            if (perCycle > 0)
+            {
+                bufText += "/" + QString::number(perCycle);
+            }
+            bufText += "  ";
         }
         bufText += "\n";
     }
+
     if (!b->outputBuffer.items.empty())
     {
         std::map<std::string, int> outCounts;
@@ -215,17 +238,50 @@ void SelectedBuildingPanel::refreshBuffers(const Building* b)
         {
             outCounts[item.type.id]++;
         }
-        bufText += "Output(" + QString::number(static_cast<int>(b->outputBuffer.items.size()))
-            + "/" + QString::number(b->outputBuffer.capacity) + "): ";
+        bufText += "Output: ";
         for (const std::pair<const std::string, int>& entry : outCounts)
         {
+            int perCycle = 0;
+            if (recipe)
+            {
+                for (const RecipeOutput& out : recipe->outputs)
+                {
+                    if (out.item == entry.first) { perCycle = out.amount; break; }
+                }
+            }
             bufText += QString::fromStdString(entry.first)
-                + ":" + QString::number(entry.second) + " ";
+                + ": " + QString::number(entry.second);
+            if (perCycle > 0)
+            {
+                bufText += "/" + QString::number(perCycle);
+            }
+            bufText += "  ";
         }
     }
+
     m_buffersLabel->setText(bufText);
 }
 
+const RecipeDef* SelectedBuildingPanel::findRecipe(const Building* b) const
+{
+    if (b->recipeId.empty()) { return nullptr; }
+    for (const RecipeDef& r : m_config->recipes.recipes)
+    {
+        if (r.id == b->recipeId && r.building == b->type) { return &r; }
+    }
+    return nullptr;
+}
+
+const ShipDef* SelectedBuildingPanel::findShipDef(const std::string& id) const
+{
+    if (id.empty()) { return nullptr; }
+    for (const ShipDef& s : m_config->ships.ships)
+    {
+        if (s.id == id) { return &s; }
+    }
+    return nullptr;
+}
+
 void SelectedBuildingPanel::onStateUpdated(Tick /*tick*/, int /*blocks*/, double /*speed*/)
 {
     if (m_singleId == kInvalidEntityId) { return; }
diff --git a/src/ui/SelectedBuildingPanel.h b/src/ui/SelectedBuildingPanel.h
index ce1c7fe..b117eaa 100644
--- a/src/ui/SelectedBuildingPanel.h
+++ b/src/ui/SelectedBuildingPanel.h
@@ -8,6 +8,8 @@
 #include "Building.h"
 #include "EntityId.h"
 #include "GameConfig.h"
+#include "RecipesConfig.h"
+#include "ShipsConfig.h"
 #include "Tick.h"
 
 class Simulation;
@@ -39,6 +41,8 @@ private:
     void buildSingle(EntityId id);
     void buildMulti(const std::vector<EntityId>& ids);
     void refreshBuffers(const Building* b);
+    const RecipeDef* findRecipe(const Building* b) const;
+    const ShipDef*   findShipDef(const std::string& id) const;
 
     Simulation*        m_sim;
     const GameConfig*  m_config;