public static MathExpressionOffset GetOffset(
IMathExpression millipixels,
IMathExpression movementDirectionInMillidegrees)
{
return(new MathExpressionOffset
{
DeltaXInMillipixels = MathExpression.Divide(MathExpression.Multiply(millipixels, MathExpression.SineScaled(movementDirectionInMillidegrees)), MathExpression.Constant(1000L)),
DeltaYInMillipixels = MathExpression.Divide(MathExpression.Multiply(millipixels, MathExpression.CosineScaled(movementDirectionInMillidegrees)), MathExpression.Constant(1000L))
});
}
private static ObjectAction GetPhase2Action(
Dictionary <string, DTDanmakuImage> spriteNameToImageDictionary,
Dictionary <string, EnemyObjectTemplate> enemyObjectTemplates,
GuidGenerator guidGenerator)
{
string milliHpVariable = guidGenerator.NextGuid();
string amountOfDamageTakenVariableName = guidGenerator.NextGuid();
ObjectAction setInitialDamageTakenAction = ObjectActionGenerator.DoOnce(ObjectAction.SetNumericVariable(amountOfDamageTakenVariableName, MathExpression.Constant(0)));
ObjectAction setInitialMilliHpVariable = ObjectActionGenerator.DoOnce(ObjectAction.SetNumericVariable(milliHpVariable, MathExpression.MilliHP()));
ObjectAction setDamageTakenVariableAction = ObjectAction.SetNumericVariable(
amountOfDamageTakenVariableName,
MathExpression.Add(
MathExpression.Variable(amountOfDamageTakenVariableName),
MathExpression.Subtract(MathExpression.Variable(milliHpVariable), MathExpression.MilliHP())));
ObjectAction setMilliHpVariable = ObjectAction.SetNumericVariable(milliHpVariable, MathExpression.MilliHP());
long phase2InitialMilliHp = 200 * 1000;
IMathExpression currentMilliHp = MathExpression.Max(
MathExpression.Subtract(MathExpression.Constant(phase2InitialMilliHp), MathExpression.Variable(amountOfDamageTakenVariableName)),
MathExpression.Constant(0));
ObjectAction displayHpBarAction = ObjectAction.DisplayBossHealthBar(
healthBarMeterNumber: MathExpression.Constant(2),
healthBarMilliPercentage: MathExpression.Divide(MathExpression.Multiply(currentMilliHp, MathExpression.Constant(100 * 1000)), MathExpression.Constant(phase2InitialMilliHp)));
ObjectAction goToPhase3Action = ObjectAction.Condition(
condition: BooleanExpression.Equal(currentMilliHp, MathExpression.Constant(0)),
action: ObjectActionGenerator.DoOnce(ObjectAction.SetNumericVariable(CurrentPhaseVariableName, MathExpression.Constant(3))));
ObjectAction shootBulletAction = Phase2ShootAction(
spriteNameToImageDictionary: spriteNameToImageDictionary,
enemyObjectTemplates: enemyObjectTemplates,
guidGenerator: guidGenerator);
return(ObjectAction.Union(
setInitialDamageTakenAction,
setInitialMilliHpVariable,
setDamageTakenVariableAction,
setMilliHpVariable,
displayHpBarAction,
GetMoveAction(guidGenerator: guidGenerator),
goToPhase3Action,
shootBulletAction));
}
/*
* If (currentX, currentY) == (desiredX, desiredY), then
* the resulting movement direction is arbitrary.
*/
public static ObjectAction MoveTowardsLocation(
IMathExpression currentX,
IMathExpression currentY,
IMathExpression desiredX,
IMathExpression desiredY,
/*
* Note that movement speed is not affected by shouldSnapshot
*/
IMathExpression movementSpeedInPixelsPerSecond,
/*
* When true, will decide movement direction on the first frame, and keep that direction.
* When false, will continuously move towards (desiredX, desiredY)
*/
bool shouldSnapshot,
GuidGenerator guidGenerator)
{
string deltaXVariable = guidGenerator.NextGuid();
string deltaYVariable = guidGenerator.NextGuid();
ObjectAction setDeltaX = ObjectAction.SetNumericVariable(deltaXVariable, MathExpression.Subtract(desiredX, currentX));
ObjectAction setDeltaY = ObjectAction.SetNumericVariable(deltaYVariable, MathExpression.Subtract(desiredY, currentY));
BooleanExpression areDeltasBothZero = BooleanExpression.And(
BooleanExpression.Equal(MathExpression.Variable(deltaXVariable), MathExpression.Constant(0)),
BooleanExpression.Equal(MathExpression.Variable(deltaYVariable), MathExpression.Constant(0)));
string angleInMillidegreesVariable = guidGenerator.NextGuid();
ObjectAction setAngle = ObjectAction.Union(
shouldSnapshot ? ObjectActionGenerator.DoOnce(setDeltaX) : setDeltaX,
shouldSnapshot ? ObjectActionGenerator.DoOnce(setDeltaY) : setDeltaY,
ObjectAction.Condition(
condition: areDeltasBothZero,
action: ObjectAction.SetNumericVariable(angleInMillidegreesVariable, MathExpression.Constant(0))),
ObjectAction.Condition(
condition: BooleanExpression.Not(areDeltasBothZero),
action: ObjectAction.SetNumericVariable(angleInMillidegreesVariable, MathExpression.ArcTangentScaled(MathExpression.Variable(deltaXVariable), MathExpression.Variable(deltaYVariable), false))),
ObjectAction.SetNumericVariable(angleInMillidegreesVariable, MathExpression.Multiply(MathExpression.Variable(angleInMillidegreesVariable), MathExpression.Constant(-1))),
ObjectAction.SetNumericVariable(angleInMillidegreesVariable, MathExpression.Add(MathExpression.Variable(angleInMillidegreesVariable), 90 * 1000)));
IMathExpression xMillis =
MathExpression.Divide(
MathExpression.Multiply(
movementSpeedInPixelsPerSecond,
MathExpression.ElapsedMillisecondsPerIteration(),
MathExpression.SineScaled(MathExpression.Variable(angleInMillidegreesVariable))),
MathExpression.Constant(1000));
IMathExpression yMillis =
MathExpression.Divide(
MathExpression.Multiply(
movementSpeedInPixelsPerSecond,
MathExpression.ElapsedMillisecondsPerIteration(),
MathExpression.CosineScaled(MathExpression.Variable(angleInMillidegreesVariable))),
MathExpression.Constant(1000));
string xMillisVariable = guidGenerator.NextGuid();
string yMillisVariable = guidGenerator.NextGuid();
ObjectAction setXMillisVariable = shouldSnapshot
? ObjectActionGenerator.DoOnce(ObjectAction.SetNumericVariable(xMillisVariable, xMillis))
: ObjectAction.SetNumericVariable(xMillisVariable, xMillis);
ObjectAction setYMillisVariable = shouldSnapshot
? ObjectActionGenerator.DoOnce(ObjectAction.SetNumericVariable(yMillisVariable, yMillis))
: ObjectAction.SetNumericVariable(yMillisVariable, yMillis);
return(ObjectAction.Union(
setAngle,
setXMillisVariable,
setYMillisVariable,
ObjectAction.SetPosition(
xMillis: MathExpression.Add(MathExpression.XMillis(), MathExpression.Variable(xMillisVariable)),
yMillis: MathExpression.Add(MathExpression.YMillis(), MathExpression.Variable(yMillisVariable)))));
}
private static Tuple <ObjectAction, BooleanExpression> MoveToSpecifiedLocations_Helper(
long startingXMillis,
long startingYMillis,
long endingXMillis,
long endingYMillis,
long speedInPixelsPerSecond,
bool shouldStrafe,
GuidGenerator guidGenerator)
{
string variableName = guidGenerator.NextGuid();
string variableName2 = guidGenerator.NextGuid();
long?direction = DTDanmakuMath.GetMovementDirectionInMillidegrees(
currentX: startingXMillis,
currentY: startingYMillis,
desiredX: endingXMillis,
desiredY: endingYMillis);
if (direction == null)
{
throw new Exception();
}
DTDanmakuMath.Offset offset = DTDanmakuMath.GetOffset(
speedInMillipixelsPerMillisecond: speedInPixelsPerSecond, // millipixels/millisecond is equivalent to pixels/second
movementDirectionInMillidegrees: direction.Value,
elapsedMillisecondsPerIteration: 1000); // Use the 1000 to help prevent rounding issues
ObjectAction moveAction = ObjectAction.SetPosition(
xMillis: MathExpression.Add(MathExpression.XMillis(), MathExpression.Divide(MathExpression.Multiply(MathExpression.Constant(offset.DeltaXInMillipixels), MathExpression.ElapsedMillisecondsPerIteration()), MathExpression.Constant(1000))),
yMillis: MathExpression.Add(MathExpression.YMillis(), MathExpression.Divide(MathExpression.Multiply(MathExpression.Constant(offset.DeltaYInMillipixels), MathExpression.ElapsedMillisecondsPerIteration()), MathExpression.Constant(1000))));
ObjectAction setDirectionAction = shouldStrafe
? ObjectAction.SetFacingDirection(facingDirectionInMillidegrees: MathExpression.Constant(180 * 1000))
: ObjectAction.SetFacingDirection(facingDirectionInMillidegrees: MathExpression.Constant(direction.Value));
IMathExpression deltaX = MathExpression.AbsoluteValue(MathExpression.Subtract(MathExpression.XMillis(), MathExpression.Constant(endingXMillis)));
IMathExpression deltaY = MathExpression.AbsoluteValue(MathExpression.Subtract(MathExpression.YMillis(), MathExpression.Constant(endingYMillis)));
IMathExpression totalDelta = MathExpression.Add(deltaX, deltaY);
ObjectAction setDeltaToVariable = ObjectAction.Union(
ObjectAction.SetNumericVariable(variableName: variableName2, variableValue: MathExpression.Variable(variableName)),
ObjectAction.SetNumericVariable(variableName: variableName, variableValue: totalDelta));
BooleanExpression reachedDestination = BooleanExpression.And(
BooleanExpression.LessThanOrEqualTo(
MathExpression.Variable(variableName2),
MathExpression.Variable(variableName)),
BooleanExpression.And(
BooleanExpression.GreaterThanOrEqualTo(MathExpression.Variable(variableName), MathExpression.Constant(0)),
BooleanExpression.GreaterThanOrEqualTo(MathExpression.Variable(variableName2), MathExpression.Constant(0))
));
ObjectAction initializeVariables = ObjectAction.Union(
ObjectAction.SetNumericVariable(variableName: variableName, variableValue: MathExpression.Constant(-1)),
ObjectAction.SetNumericVariable(variableName: variableName2, variableValue: MathExpression.Constant(-1)));
return(new Tuple <ObjectAction, BooleanExpression>(
ObjectAction.Union(
moveAction,
setDirectionAction,
ObjectAction.ConditionalNextAction(
currentAction: initializeVariables,
condition: BooleanExpression.True(),
nextAction: setDeltaToVariable)),
reachedDestination));
}
private static ObjectAction GetPhase3Action(
Dictionary <string, DTDanmakuImage> spriteNameToImageDictionary,
Dictionary <string, EnemyObjectTemplate> enemyObjectTemplates,
Dictionary <string, DTDanmakuSound> soundNameToSoundDictionary,
GuidGenerator guidGenerator)
{
string milliHpVariable = guidGenerator.NextGuid();
string amountOfDamageTakenVariableName = guidGenerator.NextGuid();
ObjectAction setInitialDamageTakenAction = ObjectActionGenerator.DoOnce(ObjectAction.SetNumericVariable(amountOfDamageTakenVariableName, MathExpression.Constant(0)));
ObjectAction setInitialMilliHpVariable = ObjectActionGenerator.DoOnce(ObjectAction.SetNumericVariable(milliHpVariable, MathExpression.MilliHP()));
ObjectAction setDamageTakenVariableAction = ObjectAction.SetNumericVariable(
amountOfDamageTakenVariableName,
MathExpression.Add(
MathExpression.Variable(amountOfDamageTakenVariableName),
MathExpression.Subtract(MathExpression.Variable(milliHpVariable), MathExpression.MilliHP())));
ObjectAction setMilliHpVariable = ObjectAction.SetNumericVariable(milliHpVariable, MathExpression.MilliHP());
long phase3InitialMilliHp = 200 * 1000;
IMathExpression currentMilliHp = MathExpression.Max(
MathExpression.Subtract(MathExpression.Constant(phase3InitialMilliHp), MathExpression.Variable(amountOfDamageTakenVariableName)),
MathExpression.Constant(0));
ObjectAction displayHpBarAction = ObjectAction.DisplayBossHealthBar(
healthBarMeterNumber: MathExpression.Constant(1),
healthBarMilliPercentage: MathExpression.Divide(MathExpression.Multiply(currentMilliHp, MathExpression.Constant(100 * 1000)), MathExpression.Constant(phase3InitialMilliHp)));
string soundEffectName = guidGenerator.NextGuid();
ObjectAction playEnemyDeathSoundEffectAction = ObjectAction.PlaySoundEffect(soundEffectName: soundEffectName);
soundNameToSoundDictionary.Add(soundEffectName, DTDanmakuSound.EnemyDeath);
DestructionAnimationGenerator.GenerateDestructionAnimationResult generateDestructionAnimationResult = DestructionAnimationGenerator.GenerateDestructionAnimation(
orderedSprites: new List <DTDanmakuImage>
{
DTDanmakuImage.Explosion1,
DTDanmakuImage.Explosion2,
DTDanmakuImage.Explosion3,
DTDanmakuImage.Explosion4,
DTDanmakuImage.Explosion5,
DTDanmakuImage.Explosion6,
DTDanmakuImage.Explosion7,
DTDanmakuImage.Explosion8,
DTDanmakuImage.Explosion9
},
millisecondsPerSprite: 20,
guidGenerator: guidGenerator);
foreach (var entry in generateDestructionAnimationResult.spriteNameToImageDictionary)
{
spriteNameToImageDictionary.Add(entry.Key, entry.Value);
}
foreach (var entry in generateDestructionAnimationResult.enemyObjectTemplates)
{
enemyObjectTemplates.Add(entry.Key, entry.Value);
}
ObjectAction destroyBoss = ObjectAction.Union(
playEnemyDeathSoundEffectAction,
generateDestructionAnimationResult.objectAction,
ObjectAction.Destroy());
ObjectAction destroyAndEndLevelAction = ObjectAction.Condition(
condition: BooleanExpression.Equal(currentMilliHp, MathExpression.Constant(0)),
action: ObjectAction.Union(
ObjectAction.EndLevel(),
destroyBoss));
ObjectAction shootBulletAction = Phase3ShootAction(
spriteNameToImageDictionary: spriteNameToImageDictionary,
enemyObjectTemplates: enemyObjectTemplates,
guidGenerator: guidGenerator);
return(ObjectAction.Union(
setInitialDamageTakenAction,
setInitialMilliHpVariable,
setDamageTakenVariableAction,
setMilliHpVariable,
displayHpBarAction,
GetMoveAction(guidGenerator: guidGenerator),
destroyAndEndLevelAction,
shootBulletAction));
}