V0.1.0 Partial Commit

changed package and application names to differentiate from main PD
release

src/com/shatteredpixel/shatteredpixeldungeon/scenes/CellSelector.java

@@ -0,0 +1,158 @@
+/*
+ * Pixel Dungeon
+ * Copyright (C) 2012-2014  Oleg Dolya
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+package com.shatteredpixel.shatteredpixeldungeon.scenes;
+
+import com.shatteredpixel.shatteredpixeldungeon.ShatteredPixelDungeon;
+import com.watabou.input.Touchscreen.Touch;
+import com.watabou.noosa.TouchArea;
+import com.shatteredpixel.shatteredpixeldungeon.DungeonTilemap;
+import com.watabou.utils.GameMath;
+import com.watabou.utils.PointF;
+
+public class CellSelector extends TouchArea {
+
+	public Listener listener = null;
+	
+	public boolean enabled;
+	
+	private float dragThreshold;
+	
+	public CellSelector( DungeonTilemap map ) {
+		super( map );
+		camera = map.camera();
+		
+		dragThreshold = PixelScene.defaultZoom * DungeonTilemap.SIZE / 2;
+	}
+	
+	@Override
+	protected void onClick( Touch touch ) {
+		if (dragging) {
+			
+			dragging = false;
+			
+		} else {
+			
+			select( ((DungeonTilemap)target).screenToTile( 
+				(int)touch.current.x, 
+				(int)touch.current.y ) );
+		}
+	}
+	
+	public void select( int cell ) {
+		if (enabled && listener != null && cell != -1) {
+			
+			listener.onSelect( cell );
+			GameScene.ready();
+			
+		} else {
+			
+			GameScene.cancel();
+			
+		}
+	}
+	
+	private boolean pinching = false;
+	private Touch another;
+	private float startZoom;
+	private float startSpan;
+	
+	@Override
+	protected void onTouchDown( Touch t ) {
+
+		if (t != touch && another == null) {
+					
+			if (!touch.down) {
+				touch = t;
+				onTouchDown( t );
+				return;
+			}
+			
+			pinching = true;
+			
+			another = t;
+			startSpan = PointF.distance( touch.current, another.current );
+			startZoom = camera.zoom;
+
+			dragging = false;
+		}
+	}
+	
+	@Override
+	protected void onTouchUp( Touch t ) {
+		if (pinching && (t == touch || t == another)) {
+			
+			pinching = false;
+			
+			int zoom = Math.round( camera.zoom );
+			camera.zoom( zoom );
+			ShatteredPixelDungeon.zoom((int) (zoom - PixelScene.defaultZoom));
+			
+			dragging = true;
+			if (t == touch) {
+				touch = another;
+			}
+			another = null;
+			lastPos.set( touch.current );
+		}
+	}	
+	
+	private boolean dragging = false;
+	private PointF lastPos = new PointF();
+	
+	@Override
+	protected void onDrag( Touch t ) {
+		 
+		camera.target = null;
+
+		if (pinching) {
+
+			float curSpan = PointF.distance( touch.current, another.current );
+			camera.zoom( GameMath.gate( 
+				PixelScene.minZoom, 
+				startZoom * curSpan / startSpan, 
+				PixelScene.maxZoom ) );
+
+		} else {
+		
+			if (!dragging && PointF.distance( t.current, t.start ) > dragThreshold) {
+				
+				dragging = true;
+				lastPos.set( t.current );
+				
+			} else if (dragging) {
+				camera.scroll.offset( PointF.diff( lastPos, t.current ).invScale( camera.zoom ) );
+				lastPos.set( t.current );	
+			}	
+		}
+		
+	}	
+	
+	public void cancel() {
+		
+		if (listener != null) {
+			listener.onSelect( null );
+		}
+		
+		GameScene.ready();
+	}
+	
+	public interface Listener {
+		void onSelect( Integer cell );
+		String prompt();
+	}
+}