v3.1.1: various stability improvements for low/inconsistent FPS:

- game now has a max delta time of 200ms
- added some checks to ensure non-looped animations do not complete twice
- adjusted 'enemy' reference in hero to 'attackTarget'

SPD-classes/src/main/java/com/watabou/noosa/Game.java

@@ -283,7 +283,9 @@ public class Game implements ApplicationListener {
 	}
 
 	protected void update() {
-		Game.elapsed = Game.timeScale * Gdx.graphics.getDeltaTime();
+		//game will not process more than 200ms of graphics time per frame
+		float frameDelta = Math.min(0.2f, Gdx.graphics.getDeltaTime());
+		Game.elapsed = Game.timeScale * frameDelta;
 		Game.timeTotal += Game.elapsed;
 		
 		Game.realTime = TimeUtils.millis();

SPD-classes/src/main/java/com/watabou/noosa/MovieClip.java

@@ -63,9 +63,11 @@ public class MovieClip extends Image {
 			while (frameTimer > curAnim.delay) {
 				frameTimer -= curAnim.delay;
 				if (curFrame >= curAnim.frames.length - 1) {
-					curFrame = curAnim.frames.length - 1;
 					if (curAnim.looped) {
 						curFrame = 0;
+					} else {
+						curFrame = curAnim.frames.length - 1;
+						frameTimer = 0;
 					}
 					finished = true;
 					if (listener != null) {

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

@@ -215,7 +215,8 @@ public class Hero extends Char {
 	public HeroAction curAction = null;
 	public HeroAction lastAction = null;
 
-	private Char enemy;
+	//reference to the enemy the hero is currently in the process of attacking
+	private Char attackTarget;
 	
 	public boolean resting = false;
 	
@@ -460,7 +461,7 @@ public class Hero extends Char {
 	
 	public boolean shoot( Char enemy, MissileWeapon wep ) {
 
-		this.enemy = enemy;
+		attackTarget = enemy;
 		boolean wasEnemy = enemy.alignment == Alignment.ENEMY
 				|| (enemy instanceof Mimic && enemy.alignment == Alignment.NEUTRAL);
 
@@ -479,6 +480,7 @@ public class Hero extends Char {
 			Buff.affect( this, Sai.ComboStrikeTracker.class).addHit();
 		}
 
+		attackTarget = null;
 		return hit;
 	}
 	
@@ -1373,15 +1375,15 @@ public class Hero extends Char {
 	
 	private boolean actAttack( HeroAction.Attack action ) {
 
-		enemy = action.target;
+		attackTarget = action.target;
 
-		if (isCharmedBy( enemy )){
+		if (isCharmedBy(attackTarget)){
 			GLog.w( Messages.get(Charm.class, "cant_attack"));
 			ready();
 			return false;
 		}
 
-		if (enemy.isAlive() && canAttack( enemy ) && enemy.invisible == 0) {
+		if (attackTarget.isAlive() && canAttack(attackTarget) && attackTarget.invisible == 0) {
 
 			if (heroClass != HeroClass.DUELIST
 					&& hasTalent(Talent.AGGRESSIVE_BARRIER)
@@ -1393,26 +1395,29 @@ public class Hero extends Char {
 				Buff.affect(this, Talent.AggressiveBarrierCooldown.class, 50f);
 
 			}
-			sprite.attack( enemy.pos );
+			//attack target cleared on onAttackComplete
+			sprite.attack( attackTarget.pos );
 
 			return false;
 
 		} else {
 
-			if (fieldOfView[enemy.pos] && getCloser( enemy.pos )) {
+			if (fieldOfView[attackTarget.pos] && getCloser( attackTarget.pos )) {
 
+				attackTarget = null;
 				return true;
 
 			} else {
 				ready();
+				attackTarget = null;
 				return false;
 			}
 
 		}
 	}
 
-	public Char enemy(){
-		return enemy;
+	public Char attackTarget(){
+		return attackTarget;
 	}
 	
 	public void rest( boolean fullRest ) {
@@ -2257,23 +2262,23 @@ public class Hero extends Char {
 	@Override
 	public void onAttackComplete() {
 
-		if (enemy == null){
+		if (attackTarget == null){
 			curAction = null;
 			super.onAttackComplete();
 			return;
 		}
 		
-		AttackIndicator.target(enemy);
-		boolean wasEnemy = enemy.alignment == Alignment.ENEMY
-				|| (enemy instanceof Mimic && enemy.alignment == Alignment.NEUTRAL);
+		AttackIndicator.target(attackTarget);
+		boolean wasEnemy = attackTarget.alignment == Alignment.ENEMY
+				|| (attackTarget instanceof Mimic && attackTarget.alignment == Alignment.NEUTRAL);
 
-		boolean hit = attack( enemy );
+		boolean hit = attack(attackTarget);
 		
 		Invisibility.dispel();
 		spend( attackDelay() );
 
 		if (hit && subClass == HeroSubClass.GLADIATOR && wasEnemy){
-			Buff.affect( this, Combo.class ).hit( enemy );
+			Buff.affect( this, Combo.class ).hit(attackTarget);
 		}
 
 		if (hit && heroClass == HeroClass.DUELIST && wasEnemy){
@@ -2281,6 +2286,7 @@ public class Hero extends Char {
 		}
 
 		curAction = null;
+		attackTarget = null;
 
 		super.onAttackComplete();
 	}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/weapon/melee/AssassinsBlade.java

@@ -48,7 +48,7 @@ public class AssassinsBlade extends MeleeWeapon {
 	public int damageRoll(Char owner) {
 		if (owner instanceof Hero) {
 			Hero hero = (Hero)owner;
-			Char enemy = hero.enemy();
+			Char enemy = hero.attackTarget();
 			if (enemy instanceof Mob && ((Mob) enemy).surprisedBy(hero)) {
 				//deals 50% toward max to max on surprise, instead of min to max.
 				int diff = max() - min();

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/weapon/melee/Dagger.java

@@ -62,7 +62,7 @@ public class Dagger extends MeleeWeapon {
 	public int damageRoll(Char owner) {
 		if (owner instanceof Hero) {
 			Hero hero = (Hero)owner;
-			Char enemy = hero.enemy();
+			Char enemy = hero.attackTarget();
 			if (enemy instanceof Mob && ((Mob) enemy).surprisedBy(hero)) {
 				//deals 75% toward max to max on surprise, instead of min to max.
 				int diff = max() - min();

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/weapon/melee/Dirk.java

@@ -48,7 +48,7 @@ public class Dirk extends MeleeWeapon {
 	public int damageRoll(Char owner) {
 		if (owner instanceof Hero) {
 			Hero hero = (Hero)owner;
-			Char enemy = hero.enemy();
+			Char enemy = hero.attackTarget();
 			if (enemy instanceof Mob && ((Mob) enemy).surprisedBy(hero)) {
 				//deals 67% toward max to max on surprise, instead of min to max.
 				int diff = max() - min();

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/weapon/missiles/Kunai.java

@@ -22,7 +22,6 @@
 package com.shatteredpixel.shatteredpixeldungeon.items.weapon.missiles;
 
 import com.shatteredpixel.shatteredpixeldungeon.Assets;
-import com.shatteredpixel.shatteredpixeldungeon.actors.Actor;
 import com.shatteredpixel.shatteredpixeldungeon.actors.Char;
 import com.shatteredpixel.shatteredpixeldungeon.actors.hero.Hero;
 import com.shatteredpixel.shatteredpixeldungeon.actors.mobs.Mob;
@@ -39,18 +38,11 @@ public class Kunai extends MissileWeapon {
 		baseUses = 5;
 	}
 	
-	private Char enemy;
-	
-	@Override
-	protected void onThrow(int cell) {
-		enemy = Actor.findChar(cell);
-		super.onThrow(cell);
-	}
-	
 	@Override
 	public int damageRoll(Char owner) {
 		if (owner instanceof Hero) {
 			Hero hero = (Hero)owner;
+			Char enemy = hero.attackTarget();
 			if (enemy instanceof Mob && ((Mob) enemy).surprisedBy(hero)) {
 				//deals 60% toward max to max on surprise, instead of min to max.
 				int diff = max() - min();

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/weapon/missiles/ThrowingKnife.java

@@ -50,7 +50,7 @@ public class ThrowingKnife extends MissileWeapon {
 	public int damageRoll(Char owner) {
 		if (owner instanceof Hero) {
 			Hero hero = (Hero)owner;
-			Char enemy = hero.enemy();
+			Char enemy = hero.attackTarget();
 			if (enemy instanceof Mob && ((Mob) enemy).surprisedBy(hero)) {
 				//deals 75% toward max to max on surprise, instead of min to max.
 				int diff = max() - min();