Evan Debenham
aed303672a
changed package and application names to differentiate from main PD release
159 lines
3.4 KiB
Java
159 lines
3.4 KiB
Java
/*
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* Pixel Dungeon
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* Copyright (C) 2012-2014 Oleg Dolya
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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package com.shatteredpixel.shatteredpixeldungeon.scenes;
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import com.shatteredpixel.shatteredpixeldungeon.ShatteredPixelDungeon;
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import com.watabou.input.Touchscreen.Touch;
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import com.watabou.noosa.TouchArea;
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import com.shatteredpixel.shatteredpixeldungeon.DungeonTilemap;
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import com.watabou.utils.GameMath;
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import com.watabou.utils.PointF;
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public class CellSelector extends TouchArea {
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public Listener listener = null;
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public boolean enabled;
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private float dragThreshold;
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public CellSelector( DungeonTilemap map ) {
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super( map );
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camera = map.camera();
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dragThreshold = PixelScene.defaultZoom * DungeonTilemap.SIZE / 2;
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}
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@Override
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protected void onClick( Touch touch ) {
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if (dragging) {
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dragging = false;
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} else {
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select( ((DungeonTilemap)target).screenToTile(
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(int)touch.current.x,
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(int)touch.current.y ) );
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}
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}
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public void select( int cell ) {
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if (enabled && listener != null && cell != -1) {
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listener.onSelect( cell );
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GameScene.ready();
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} else {
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GameScene.cancel();
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}
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}
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private boolean pinching = false;
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private Touch another;
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private float startZoom;
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private float startSpan;
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@Override
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protected void onTouchDown( Touch t ) {
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if (t != touch && another == null) {
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if (!touch.down) {
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touch = t;
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onTouchDown( t );
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return;
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}
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pinching = true;
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another = t;
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startSpan = PointF.distance( touch.current, another.current );
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startZoom = camera.zoom;
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dragging = false;
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}
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}
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@Override
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protected void onTouchUp( Touch t ) {
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if (pinching && (t == touch || t == another)) {
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pinching = false;
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int zoom = Math.round( camera.zoom );
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camera.zoom( zoom );
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ShatteredPixelDungeon.zoom((int) (zoom - PixelScene.defaultZoom));
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dragging = true;
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if (t == touch) {
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touch = another;
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}
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another = null;
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lastPos.set( touch.current );
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}
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}
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private boolean dragging = false;
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private PointF lastPos = new PointF();
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@Override
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protected void onDrag( Touch t ) {
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camera.target = null;
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if (pinching) {
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float curSpan = PointF.distance( touch.current, another.current );
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camera.zoom( GameMath.gate(
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PixelScene.minZoom,
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startZoom * curSpan / startSpan,
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PixelScene.maxZoom ) );
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} else {
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if (!dragging && PointF.distance( t.current, t.start ) > dragThreshold) {
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dragging = true;
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lastPos.set( t.current );
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} else if (dragging) {
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camera.scroll.offset( PointF.diff( lastPos, t.current ).invScale( camera.zoom ) );
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lastPos.set( t.current );
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}
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}
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}
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public void cancel() {
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if (listener != null) {
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listener.onSelect( null );
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}
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GameScene.ready();
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}
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public interface Listener {
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void onSelect( Integer cell );
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String prompt();
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}
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}
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