v0.8.0: fixes/tweaks:

- Buying shop items now only triggers when hero walks onto them. This is for consistency with other item types
- Mimics are now alerted when they receive a debuff
- Teleportation now only plays sfx/vfx if the hero sees it
- Fixed logic for updating openSpace array when terrain changes
- Added a limit to how large chars and items are prioritized over cells
- Adjusted hero to appear behind mobs by default
- Fixed cases where movement keys would remain held incorrectly
- Improved vfx for falling enemies and items
- Fixed golem particle vfx lasting longer than intended in some cases

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/hero/Hero.java

@@ -651,7 +651,7 @@ public class Hero extends Char {
 	
 	private boolean actBuy( HeroAction.Buy action ) {
 		int dst = action.dst;
-		if (pos == dst || Dungeon.level.adjacent( pos, dst )) {
+		if (pos == dst) {
 
 			ready();
 			

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/Mimic.java

@@ -26,6 +26,7 @@ import com.shatteredpixel.shatteredpixeldungeon.Challenges;
 import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
+import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Buff;
 import com.shatteredpixel.shatteredpixeldungeon.effects.CellEmitter;
 import com.shatteredpixel.shatteredpixeldungeon.effects.Pushing;
 import com.shatteredpixel.shatteredpixeldungeon.effects.Speck;
@@ -90,6 +91,16 @@ public class Mimic extends Mob {
 		}
 	}
 
+	@Override
+	public void add(Buff buff) {
+		super.add(buff);
+		if (buff.type == Buff.buffType.NEGATIVE && alignment == Alignment.NEUTRAL){
+			alignment = Alignment.ENEMY;
+			stopHiding();
+			if (sprite != null) sprite.idle();
+		}
+	}
+
 	@Override
 	public String name() {
 		if (alignment == Alignment.NEUTRAL){

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/scrolls/ScrollOfTeleportation.java

@@ -222,6 +222,10 @@ public class ScrollOfTeleportation extends Scroll {
 
 		ch.sprite.interruptMotion();
 
+		if (Dungeon.level.heroFOV[pos] || Dungeon.level.heroFOV[ch.pos]){
+			Sample.INSTANCE.play(Assets.SND_TELEPORT);
+		}
+
 		ch.move( pos );
 		if (ch.pos == pos) ch.sprite.place( pos );
 
@@ -230,8 +234,9 @@ public class ScrollOfTeleportation extends Scroll {
 			ch.sprite.parent.add( new AlphaTweener( ch.sprite, 1, 0.4f ) );
 		}
 
+		if (Dungeon.level.heroFOV[pos] || ch == Dungeon.hero ) {
 			ch.sprite.emitter().start(Speck.factory(Speck.LIGHT), 0.2f, 3);
-		Sample.INSTANCE.play( Assets.SND_TELEPORT );
+		}
 	}
 	
 	@Override

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/levels/Level.java

@@ -693,18 +693,27 @@ public abstract class Level implements Bundlable {
 		level.pit[cell]			    = (flags & Terrain.PIT) != 0;
 		level.water[cell]			= terrain == Terrain.WATER;
 
-		for (int i : PathFinder.NEIGHBOURS9){
-			level.openSpace[cell+i] = !level.solid[cell+i] &&
-					(!level.solid[cell+i-1] || !level.solid[cell+i+1]) &&
-					(!level.solid[cell+i-level.width()] || !level.solid[cell+i+level.width()]);
-		}
-		
 		SmokeScreen s = (SmokeScreen)level.blobs.get(SmokeScreen.class);
 		if (s != null && s.volume > 0){
 			level.losBlocking[cell] = level.losBlocking[cell] || s.cur[cell] > 0;
 		}
 
-		//TODO update openSpace here too
+		for (int i : PathFinder.NEIGHBOURS9){
+			i = cell + i;
+			if (level.solid[i]){
+				level.openSpace[i] = false;
+			} else {
+				for (int j = 1; j < PathFinder.CIRCLE8.length; j += 2){
+					if (level.solid[i+PathFinder.CIRCLE8[j]]) {
+						level.openSpace[i] = false;
+					} else if (!level.solid[i+PathFinder.CIRCLE8[(j+1)%8]]
+							&& !level.solid[i+PathFinder.CIRCLE8[(j+2)%8]]){
+						level.openSpace[i] = true;
+						break;
+					}
+				}
+			}
+		}
 	}
 	
 	public Heap drop( Item item, int cell ) {

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

@@ -82,19 +82,29 @@ public class CellSelector extends ScrollArea {
 		} else {
 			
 			PointF p = Camera.main.screenToCamera( (int) event.current.x, (int) event.current.y );
+
+			//Prioritizes a mob sprite if it and a tile overlap, so long as the mob sprite isn't more than 4 pixels into a tile the mob doesn't occupy.
+			//The extra check prevents large mobs from blocking the player from clicking adjacent tiles
 			for (Char mob : Dungeon.level.mobs.toArray(new Mob[0])){
 				if (mob.sprite != null && mob.sprite.overlapsPoint( p.x, p.y )){
+					PointF c = DungeonTilemap.tileCenterToWorld(mob.pos);
+					if (Math.abs(p.x - c.x) <= 12 && Math.abs(p.y - c.y) <= 12) {
 						select(mob.pos);
 						return;
 					}
 				}
+			}
 
+			//Does the same but for heaps
 			for (Heap heap : Dungeon.level.heaps.valueList()){
 				if (heap.sprite != null && heap.sprite.overlapsPoint( p.x, p.y)){
+					PointF c = DungeonTilemap.tileCenterToWorld(heap.pos);
+					if (Math.abs(p.x - c.x) <= 12 && Math.abs(p.y - c.y) <= 12) {
 						select(heap.pos);
 						return;
 					}
 				}
+			}
 			
 			select( ((DungeonTilemap)target).screenToTile(
 				(int) event.current.x,

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/scenes/GameScene.java

@@ -246,6 +246,11 @@ public class GameScene extends PixelScene {
 		mobs = new Group();
 		add( mobs );
 
+		hero = new HeroSprite();
+		hero.place( Dungeon.hero.pos );
+		hero.updateArmor();
+		mobs.add( hero );
+		
 		for (Mob mob : Dungeon.level.mobs) {
 			addMobSprite( mob );
 			if (Statistics.amuletObtained) {
@@ -296,11 +301,6 @@ public class GameScene extends PixelScene {
 		
 		add( emoicons );
 		
-		hero = new HeroSprite();
-		hero.place( Dungeon.hero.pos );
-		hero.updateArmor();
-		mobs.add( hero );
-		
 		add( cellSelector = new CellSelector( tiles ) );
 
 		pane = new StatusPane();
@@ -967,6 +967,7 @@ public class GameScene extends PixelScene {
 	}
 	
 	private static boolean cancelCellSelector() {
+		cellSelector.resetKeyHold();
 		if (cellSelector.listener != null && cellSelector.listener != defaultCellListener) {
 			cellSelector.cancel();
 			return true;

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/sprites/DiscardedItemSprite.java

@@ -21,23 +21,19 @@
 
 package com.shatteredpixel.shatteredpixeldungeon.sprites;
 
+import com.shatteredpixel.shatteredpixeldungeon.tiles.DungeonTilemap;
 import com.watabou.noosa.Game;
 
 public class DiscardedItemSprite extends ItemSprite {
 	
-	public DiscardedItemSprite() {
-		
-		super();
-		
-		originToCenter();
-		angularSpeed = 720;
-	}
-	
 	@Override
 	public void drop() {
 		scale.set( 1 );
 		am = 1;
 		if (emitter != null) emitter.killAndErase();
+
+		origin.set( width/2, height - DungeonTilemap.SIZE/2);
+		angularSpeed = 720;
 	}
 	
 	@Override
@@ -45,7 +41,8 @@ public class DiscardedItemSprite extends ItemSprite {
 		
 		super.update();
 		
-		scale.set( scale.x * 0.9f );
+		scale.set( scale.x -= Game.elapsed );
+		y += 12 * Game.elapsed;
 		if ((am -= Game.elapsed) <= 0) {
 			remove();
 		}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/sprites/GolemSprite.java

@@ -78,6 +78,15 @@ public class GolemSprite extends MobSprite {
 		}
 	}
 
+	@Override
+	public void kill() {
+		super.kill();
+
+		if (teleParticles != null) {
+			teleParticles.on = false;
+		}
+	}
+
 	public void teleParticles(boolean value){
 		if (teleParticles != null) teleParticles.on = value;
 	}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/sprites/MobSprite.java

@@ -23,6 +23,7 @@ package com.shatteredpixel.shatteredpixeldungeon.sprites;
 
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
 import com.shatteredpixel.shatteredpixeldungeon.tiles.DungeonTilemap;
+import com.watabou.noosa.Game;
 import com.watabou.noosa.tweeners.AlphaTweener;
 import com.watabou.noosa.tweeners.ScaleTweener;
 import com.watabou.utils.PointF;
@@ -59,6 +60,15 @@ public class MobSprite extends CharSprite {
 		
 		origin.set( width / 2, height - DungeonTilemap.SIZE / 2 );
 		angularSpeed = Random.Int( 2 ) == 0 ? -720 : 720;
+		am = 1;
+
+		if (emo != null){
+			emo.killAndErase();
+		}
+
+		if (health != null){
+			health.killAndErase();
+		}
 		
 		parent.add( new ScaleTweener( this, new PointF( 0, 0 ), FALL_TIME ) {
 			@Override
@@ -69,6 +79,7 @@ public class MobSprite extends CharSprite {
 			@Override
 			protected void updateValues( float progress ) {
 				super.updateValues( progress );
+				y += 12 * Game.elapsed;
 				am = 1 - progress;
 			}
 		} );