Load and display prefabs in UI

forms/prefabframe.ui

@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PrefabFrame</class>
+ <widget class="QFrame" name="PrefabFrame">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>149</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Minimum">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>16777215</width>
+    <height>16777215</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string>Frame</string>
+  </property>
+  <property name="frameShape">
+   <enum>QFrame::Panel</enum>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout">
+   <property name="sizeConstraint">
+    <enum>QLayout::SetMinimumSize</enum>
+   </property>
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <property name="sizeConstraint">
+      <enum>QLayout::SetMinimumSize</enum>
+     </property>
+     <item>
+      <widget class="QLabel" name="label_Name">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Minimum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QGraphicsView" name="graphicsView_Prefab">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Minimum">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QPushButton" name="pushButton">
+     <property name="text">
+      <string/>
+     </property>
+     <property name="icon">
+      <iconset resource="../resources/images.qrc">
+       <normaloff>:/icons/delete.ico</normaloff>:/icons/delete.ico</iconset>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <spacer name="horizontalSpacer">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>40</width>
+       <height>20</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="../resources/images.qrc"/>
+ </resources>
+ <connections/>
+</ui>

include/config.h

@@ -157,6 +157,7 @@ public:
         this->enableFloorNumber = false;
         this->createMapTextFile = false;
         this->enableTripleLayerMetatiles = false;
+        this->prefabFilepath = QString();
         this->customScripts.clear();
         this->readKeys.clear();
     }
@@ -193,6 +194,8 @@ public:
     bool getTripleLayerMetatilesEnabled();
     void setCustomScripts(QList<QString> scripts);
     QList<QString> getCustomScripts();
+    void setPrefabFilepath(QString filepath);
+    QString getPrefabFilepath();
 protected:
     virtual QString getConfigFilepath() override;
     virtual void parseConfigKeyValue(QString key, QString value) override;
@@ -217,6 +220,7 @@ private:
     bool enableTripleLayerMetatiles;
     QList<QString> customScripts;
     QStringList readKeys;
+    QString prefabFilepath;
 };
 
 extern ProjectConfig projectConfig;

include/ui/currentselectedmetatilespixmapitem.h

@@ -18,4 +18,6 @@ public:
     void setMap(Map *map) { this->map = map; }
 };
 
+QPixmap drawMetatileSelection(MetatileSelection selection, Map *map);
+
 #endif // CURRENTSELECTEDMETATILESPIXMAPITEM_H

include/ui/prefab.h

@@ -0,0 +1,31 @@
+#ifndef PREFAB_H
+#define PREFAB_H
+
+#include "ui/metatileselector.h"
+#include "map.h"
+
+#include <QString>
+#include <QLabel>
+
+struct PrefabItem
+{
+    QString name;
+    QString primaryTileset;
+    QString secondaryTileset;
+    MetatileSelection selection;
+};
+
+class Prefab
+{
+public:
+    void initPrefabUI(QWidget *prefabWidget, QLabel *emptyPrefabLabel, QString primaryTileset, QString secondaryTileset, Map *map);
+
+private:
+    QList<PrefabItem> items;
+    void loadPrefabs();
+    QList<PrefabItem> getPrefabsForTilesets(QString primaryTileset, QString secondaryTileset);
+};
+
+extern Prefab prefab;
+
+#endif // PREFAB_H

include/ui/prefabframe.h

@@ -0,0 +1,22 @@
+#ifndef PREFABFRAME_H
+#define PREFABFRAME_H
+
+#include <QFrame>
+
+namespace Ui {
+class PrefabFrame;
+}
+
+class PrefabFrame : public QFrame
+{
+    Q_OBJECT
+
+public:
+    explicit PrefabFrame(QWidget *parent = nullptr);
+    ~PrefabFrame();
+
+public:
+    Ui::PrefabFrame *ui;
+};
+
+#endif // PREFABFRAME_H

porymap.pro

@@ -45,6 +45,7 @@ SOURCES += src/core/block.cpp \
     src/ui/connectionpixmapitem.cpp \
     src/ui/currentselectedmetatilespixmapitem.cpp \
     src/ui/overlay.cpp \
+    src/ui/prefab.cpp \
     src/ui/regionmaplayoutpixmapitem.cpp \
     src/ui/regionmapentriespixmapitem.cpp \
     src/ui/cursortilerect.cpp \
@@ -80,6 +81,7 @@ SOURCES += src/core/block.cpp \
     src/ui/shortcut.cpp \
     src/ui/shortcutseditor.cpp \
     src/ui/multikeyedit.cpp \
+    src/ui/prefabframe.cpp \
     src/ui/preferenceeditor.cpp \
     src/ui/regionmappropertiesdialog.cpp \
     src/ui/colorpicker.cpp \
@@ -126,6 +128,7 @@ HEADERS  += include/core/block.h \
     include/ui/collisionpixmapitem.h \
     include/ui/connectionpixmapitem.h \
     include/ui/currentselectedmetatilespixmapitem.h \
+    include/ui/prefabframe.h \
     include/ui/regionmaplayoutpixmapitem.h \
     include/ui/regionmapentriespixmapitem.h \
     include/ui/cursortilerect.h \
@@ -163,6 +166,7 @@ HEADERS  += include/core/block.h \
     include/ui/shortcut.h \
     include/ui/shortcutseditor.h \
     include/ui/multikeyedit.h \
+    include/ui/prefab.h \
     include/ui/preferenceeditor.h \
     include/ui/regionmappropertiesdialog.h \
     include/ui/colorpicker.h \
@@ -176,6 +180,7 @@ HEADERS  += include/core/block.h \
 
 FORMS    += forms/mainwindow.ui \
     forms/eventpropertiesframe.ui \
+    forms/prefabframe.ui \
     forms/tileseteditor.ui \
     forms/paletteeditor.ui \
     forms/regionmapeditor.ui \

src/config.cpp

@@ -503,6 +503,8 @@ void ProjectConfig::parseConfigKeyValue(QString key, QString value) {
                 this->customScripts.append(script);
             }
         }
+    } else if (key == "prefabs_filepath") {
+        this->prefabFilepath = value;
     } else {
         logWarn(QString("Invalid config key found in config file %1: '%2'").arg(this->getConfigFilepath()).arg(key));
     }
@@ -540,6 +542,7 @@ QMap<QString, QString> ProjectConfig::getKeyValueMap() {
     map.insert("create_map_text_file", QString::number(this->createMapTextFile));
     map.insert("enable_triple_layer_metatiles", QString::number(this->enableTripleLayerMetatiles));
     map.insert("custom_scripts", this->customScripts.join(","));
+    map.insert("prefabs_filepath", this->prefabFilepath);
     return map;
 }
 
@@ -732,6 +735,15 @@ QList<QString> ProjectConfig::getCustomScripts() {
     return this->customScripts;
 }
 
+void ProjectConfig::setPrefabFilepath(QString filepath) {
+    this->prefabFilepath = filepath;
+    this->save();
+}
+
+QString ProjectConfig::getPrefabFilepath() {
+    return this->prefabFilepath;
+}
+
 ShortcutsConfig shortcutsConfig;
 
 QString ShortcutsConfig::getConfigFilepath() {

src/mainwindow.cpp

@@ -16,6 +16,7 @@
 #include "flowlayout.h"
 #include "shortcut.h"
 #include "mapparser.h"
+#include "prefab.h"
 
 #include <QFileDialog>
 #include <QClipboard>
@@ -552,6 +553,12 @@ bool MainWindow::openProject(QString dir) {
     }
 
     if (success) {
+        prefab.initPrefabUI(
+                    ui->scrollAreaWidgetContents_Prefabs,
+                    ui->label_prefabHelp,
+                    editor->ui->comboBox_PrimaryTileset->currentText(),
+                    editor->ui->comboBox_SecondaryTileset->currentText(),
+                    editor->map);
         for (auto action : this->registeredActions) {
             this->ui->menuTools->removeAction(action);
         }

src/ui/currentselectedmetatilespixmapitem.cpp

@@ -2,8 +2,7 @@
 #include "imageproviders.h"
 #include <QPainter>
 
-void CurrentSelectedMetatilesPixmapItem::draw() {
-    MetatileSelection selection = metatileSelector->getMetatileSelection();
+QPixmap drawMetatileSelection(MetatileSelection selection, Map *map) {
     int width = selection.dimensions.x() * 16;
     int height = selection.dimensions.y() * 16;
     QImage image(width, height, QImage::Format_RGBA8888);
@@ -27,5 +26,10 @@ void CurrentSelectedMetatilesPixmapItem::draw() {
     }
 
     painter.end();
-    setPixmap(QPixmap::fromImage(image));
+    return QPixmap::fromImage(image);
+}
+
+void CurrentSelectedMetatilesPixmapItem::draw() {
+    MetatileSelection selection = metatileSelector->getMetatileSelection();
+    setPixmap(drawMetatileSelection(selection, this->map));
 }

src/ui/prefab.cpp

@@ -0,0 +1,116 @@
+
+#include "prefab.h"
+#include "prefabframe.h"
+#include "ui_prefabframe.h"
+#include "parseutil.h"
+#include "currentselectedmetatilespixmapitem.h"
+
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QGraphicsPixmapItem>
+#include <QWidget>
+#include <QDir>
+#include <QSpacerItem>
+
+
+void Prefab::loadPrefabs() {
+    this->items.clear();
+    QString filepath = projectConfig.getPrefabFilepath();
+    if (filepath.isEmpty()) return;
+
+    ParseUtil parser;
+    QJsonDocument prefabDoc;
+    if (!QFile::exists(filepath) || !parser.tryParseJsonFile(&prefabDoc, filepath)) {
+        QString relativePath = QDir::cleanPath(projectConfig.getProjectDir() + QDir::separator() + filepath);
+        if (!parser.tryParseJsonFile(&prefabDoc, relativePath)) {
+            logError(QString("Failed to prefab data from %1").arg(filepath));
+            return;
+        }
+    }
+
+    QJsonArray prefabs = prefabDoc.array();
+    if (prefabs.size() == 0) {
+        logWarn(QString("Prefabs array is empty or missing in %1.").arg(filepath));
+        return;
+    }
+
+    for (int i = 0; i < prefabs.size(); i++) {
+        QJsonObject prefabObj = prefabs[i].toObject();
+        if (prefabObj.isEmpty())
+            continue;
+
+        int width = prefabObj["width"].toInt();
+        int height = prefabObj["height"].toInt();
+        if (width <= 0 || height <= 0)
+            continue;
+
+        QString name = prefabObj["name"].toString();
+        QString primaryTileset = prefabObj["primary_tileset"].toString();
+        QString secondaryTileset = prefabObj["secondary_tileset"].toString();
+
+        MetatileSelection selection;
+        selection.dimensions = QPoint(width, height);
+        selection.hasCollision = true;
+        for (int j = 0; j < width * height; j++) {
+            selection.metatileItems.append(MetatileSelectionItem{false, 0});
+            selection.collisionItems.append(CollisionSelectionItem{false, 0, 0});
+        }
+        QJsonArray metatiles = prefabObj["metatiles"].toArray();
+        for (int j = 0; j < metatiles.size(); j++) {
+            QJsonObject metatileObj = metatiles[j].toObject();
+            int x = metatileObj["x"].toInt();
+            int y = metatileObj["y"].toInt();
+            if (x < 0 || x >= width || y < 0 || y >= height)
+                continue;
+            int index = y * width + x;
+            selection.metatileItems[index].enabled = true;
+            selection.metatileItems[index].metatileId = metatileObj["metatile_id"].toInt();
+            selection.collisionItems[index].enabled = true;
+            selection.collisionItems[index].collision = metatileObj["collision"].toInt();
+            selection.collisionItems[index].elevation = metatileObj["elevation"].toInt();
+        }
+
+        this->items.append(PrefabItem{name, primaryTileset, secondaryTileset, selection});
+    }
+}
+
+QList<PrefabItem> Prefab::getPrefabsForTilesets(QString primaryTileset, QString secondaryTileset) {
+    QList<PrefabItem> filteredPrefabs;
+    for (auto item : this->items) {
+        if ((item.primaryTileset.isEmpty() || item.primaryTileset == primaryTileset) &&
+            (item.secondaryTileset.isEmpty() || item.secondaryTileset == secondaryTileset)) {
+            filteredPrefabs.append(item);
+        }
+    }
+    return filteredPrefabs;
+}
+
+void Prefab::initPrefabUI(QWidget *prefabWidget, QLabel *emptyPrefabLabel, QString primaryTileset, QString secondaryTileset, Map *map) {
+    this->loadPrefabs();
+    QList<PrefabItem> prefabs = this->getPrefabsForTilesets(primaryTileset, secondaryTileset);
+    if (prefabs.isEmpty()) {
+        emptyPrefabLabel->setVisible(true);
+        return;
+    }
+
+    emptyPrefabLabel->setVisible(false);
+    for (auto item : this->items) {
+        PrefabFrame *frame = new PrefabFrame();
+        frame->ui->label_Name->setText(item.name);
+
+        auto scene = new QGraphicsScene;
+        scene->addPixmap(drawMetatileSelection(item.selection, map));
+        scene->setSceneRect(scene->itemsBoundingRect());
+        frame->ui->graphicsView_Prefab->setScene(scene);
+        frame->ui->graphicsView_Prefab->setFixedSize(scene->itemsBoundingRect().width() + 2,
+                                                     scene->itemsBoundingRect().height() + 2);
+
+        prefabWidget->layout()->addWidget(frame);
+    }
+    auto spacer = new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::Expanding);
+    prefabWidget->layout()->addItem(spacer);
+}
+
+
+Prefab prefab;

src/ui/prefabframe.cpp

@@ -0,0 +1,15 @@
+#include "prefabframe.h"
+
+#include "ui_prefabframe.h"
+
+PrefabFrame::PrefabFrame(QWidget *parent) :
+    QFrame(parent),
+    ui(new Ui::PrefabFrame)
+{
+    ui->setupUi(this);
+}
+
+PrefabFrame::~PrefabFrame()
+{
+    delete ui;
+}