Add support for scrolling with mouse

Author: SaturninTheAlien

src/main/java/pekaeds/ui/mappanel/MapPanelMouseHandler.java

@@ -143,14 +143,31 @@ public void mouseMoved(MouseEvent e) {
 
     @Override
     public void mouseWheelMoved(MouseWheelEvent e) {
-        // mapPanel.getModel().setZoomPosition(e.getPoint());
-        
-        if (e.getPreciseWheelRotation() < 0) {
-            //mapPanel.getModel().setZoomAmount(mapPanel.getModel().getZoomAmount() + 0.01f);
-        } else {
-            //mapPanel.getModel().setZoomAmount(mapPanel.getModel().getZoomAmount() - 0.01f);
+        Rectangle viewport = this.mapPanel.viewport();
+
+        double dy = 32. *e.getPreciseWheelRotation();
+        int dy_i = (int)dy;
+
+        if(dy_i==0){
+            dy_i = e.getPreciseWheelRotation() <= 0 ? -1 : 1;
+        }
+
+        if(e.isShiftDown()){
+            int newX = viewport.x + dy_i;
+            if(newX < 0){
+                newX = 0;
+            }
+
+            mapPanel.updateViewportPosition(newX, viewport.y);
+        }
+        else{
+            int newY = viewport.y + dy_i;
+            if(newY < 0){
+                newY = 0;
+            }
+            mapPanel.updateViewportPosition(viewport.x, newY);
         }
-        
+        e.consume();              
         mapPanel.repaint();
     }
 

src/main/java/pekaeds/ui/minimappanel/MiniMapPanel.java

@@ -94,15 +94,15 @@ public void tileChanged(int x, int y, int tileID) {
 
     private void setViewportPosition(Point pos) {
         if (pos.x + (viewport.width / 2) >= currentSector.getWidth()) {
-            viewport.x = currentSector.getWidth() - viewport.width; // TODO -1 here too?
+            viewport.x = currentSector.getWidth() - viewport.width + 1;
         } else if (pos.x - (viewport.width / 2) <= 0) {
             viewport.x = 0;
         } else {
             viewport.x = pos.x - (viewport.width / 2);
         }
 
         if (pos.y + (viewport.height / 2) >= currentSector.getHeight()) {
-            viewport.y = currentSector.getHeight() - viewport.height; // -1 to prevent it from going out of bounds
+            viewport.y = currentSector.getHeight() - viewport.height + 1;
         } else if (pos.y - (viewport.height / 2) <= 0) {
             viewport.y = 0;
         } else {