/// <summary>
/// This Factory Method produces the next state for every enemy calling it.
/// </summary>
/// <param name="e"> Used to determine what states are available to the enemy </param>
/// <returns> A new EnemyState Child </returns>
public static EnemyState GetNextState(Enemy e)
{
Random rand = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < 999990; i++)
{
} // Use up time so each Enemy's random updates differently
int chance = rand.Next(100);
if (e is Buzzard)
{
/*** Buzzard States ***/
Buzzard b = e as Buzzard;
// *** Check if lost in a joust against the player ***
if (b.coords.y > 450 && b.coords.y < 525 && b.coords.x > 650 && b.coords.x < 800)
{
return new BuzzardFleeingState()
{
StateEnemy = b
}
}
;
// *** Check if Buzzard is near the ground of a platform and return new EnemyRunningState like below ***
if (b.state is EnemyStandingState)
{
if (chance % 2 == 0)
{
if (chance % 10 < 5)
{
return new EnemyRunningState()
{
Angle = 0, StateEnemy = b
}
}
; // Running right state
else
{
return new EnemyRunningState()
{
Angle = 180, StateEnemy = b
}
}; // Running left state
}
else
{
return(new EnemyFlappingState()
{
Angle = 90, StateEnemy = b
}); // Flapping up state
}
}
else if (b.state is EnemyRunningState)
{
if (chance < 2)
{
return new EnemyStandingState()
{
Angle = b.state.Angle, StateEnemy = b
}
}
; // Standing state
else if (chance < 99)
{
return new EnemyRunningState()
{
Angle = b.state.Angle, StateEnemy = b
}
}
; // Running in same direction state
b.state.Angle += 180;
if (b.state.Angle > 360)
{
b.state.Angle -= 360;
}
return(new EnemyRunningState()
{
Angle = b.state.Angle, StateEnemy = b
}); // Running in opposite direction state
}
else if (b.state is EnemyFlappingState)
{
switch (b.state.Angle)
{
case 90:
if (chance / 10 < 2 && chance % 10 < 4 || b.coords.y < 10)
{
return new EnemyFallingState()
{
Angle = 270, StateEnemy = b
}
}
; // Falling down state
else if (chance % 2 == 0)
{
return new EnemyFlappingState()
{
Angle = 45, StateEnemy = b
}
}
; // Flapping right state
else
{
return new EnemyFlappingState()
{
Angle = 135, StateEnemy = b
}
}; // Flapping left state
default:
if (chance < 2 || b.coords.y < 10)
{
return new EnemyFlappingState()
{
Angle = 90, StateEnemy = b
}
}
; // Flapping up state
else
{
return new EnemyFlappingState()
{
Angle = b.state.Angle, StateEnemy = b
}
};
}
}
else if (b.state is EnemyFallingState)
{
switch (b.state.Angle)
{
case 270:
if (chance % 10 < 3 || b.coords.y > 800)
{
return new EnemyFlappingState()
{
Angle = 90, StateEnemy = b
}
}
; // Flapping up state
else if (chance % 2 == 0)
{
return new EnemyFallingState()
{
Angle = 315, StateEnemy = b
}
}
; // Falling right state
else
{
return new EnemyFallingState()
{
Angle = 225, StateEnemy = b
}
}; // Falling left state
default:
if (chance < 3)
{
return new EnemyFallingState()
{
Angle = 270, StateEnemy = b
}
}
; // Falling down state
else
{
return new EnemyFallingState()
{
Angle = b.state.Angle, StateEnemy = b
}
};
}
}
else if (b.state is BuzzardPickupState)
{
BuzzardPickupState set_state = b.state as BuzzardPickupState;
// Determine if the Buzzard is close enough to the Mik being picked up
if ((set_state.TargetEgg.coords.x - b.coords.x) > -5 && (set_state.TargetEgg.coords.x - b.coords.x) < 5 && ((set_state.TargetEgg.coords.y - 50) - b.coords.y) < 5 && ((set_state.TargetEgg.coords.y - 50) - b.coords.y) > -5)
{
// Picked up Mik
set_state.TargetEgg.mounted = true;
b.droppedEgg = false;
return(new EnemyStandingState()
{
StateEnemy = b, Angle = 0
});
}
else
{
return(new BuzzardPickupState()
{
StateEnemy = b, Angle = b.state.Angle, TargetEgg = set_state.TargetEgg
});
}
}
else
{
// If non of the previous states, set state to Fleeing
return(new BuzzardFleeingState()
{
StateEnemy = b
});
}
}
else if (e is Egg)
{
/*** Egg States ***/
Egg egg = e as Egg;
if (egg.state is EnemyFallingState)
{
// *** Implement when the egg lands on a platform ***
if (egg.coords.y > 800)
{
return new EnemyStandingState()
{
Angle = egg.state.Angle, StateEnemy = egg
}
}
; // Standing state
else
{
return new EnemyFallingState()
{
Angle = egg.state.Angle, StateEnemy = egg
}
}; // Falling state
}
else
{
if (egg.seconds > 800)
{
return(new EggHatchedState()
{
StateEnemy = egg
}); // Egg has hatched state
}
else if (egg.seconds > 600)
{
egg.seconds++;
return(new EggHatchingState()
{
StateEnemy = egg
}); // Egg is hatching state
}
else
{
egg.seconds++;
return(new EnemyStandingState()
{
Angle = 0, StateEnemy = egg
}); // Standing state
}
}
}
else if (e is Pterodactyl)
{
/*** Pterodactyl States ***/
Pterodactyl p = e as Pterodactyl;
// *** Add charging state to attack nearby player ***
if (p.coords.y > 300 && p.coords.y < 500 && p.coords.x > 600 && p.coords.x < 800)
{
return new PterodactylChargeState()
{
StateEnemy = p
}
}
;
// *** Add hitbox check to destroy pterodactyl ***
if (p.coords.y > 450 && p.coords.y < 525 && p.coords.x > 650 && p.coords.x < 800)
{
return new PterodactylDestroyedState()
{
StateEnemy = p
}
}
;
if (p.state is EnemyFallingState)
{
switch (p.state.Angle)
{
case 270:
if (chance % 10 < 3 || p.coords.y > 800)
{
return new EnemyFlappingState()
{
Angle = 90, StateEnemy = p
}
}
; // Flapping up state
else if (chance % 2 == 0)
{
return new EnemyFallingState()
{
Angle = 315, StateEnemy = p
}
}
; // Falling right state
else
{
return new EnemyFallingState()
{
Angle = 225, StateEnemy = p
}
}; // Falling left state
default:
if (chance < 3)
{
return new EnemyFallingState()
{
Angle = 270, StateEnemy = p
}
}
; // Falling down state
else
{
return new EnemyFallingState()
{
Angle = p.state.Angle, StateEnemy = p
}
};
}
}
else if (p.state is EnemyFlappingState)
{
switch (p.state.Angle)
{
case 90:
if (chance / 10 < 2 && chance % 10 < 4 || p.coords.y < 10)
{
return new EnemyFallingState()
{
Angle = 270, StateEnemy = p
}
}
; // Falling down state
else if (chance % 2 == 0)
{
return new EnemyFlappingState()
{
Angle = 45, StateEnemy = p
}
}
; // Flapping right state
else
{
return new EnemyFlappingState()
{
Angle = 135, StateEnemy = p
}
}; // Flapping left state
default:
if (chance < 2 || p.coords.y < 10)
{
return new EnemyFlappingState()
{
Angle = 90, StateEnemy = p
}
}
; // Flapping up state
else
{
return new EnemyFlappingState()
{
Angle = p.state.Angle, StateEnemy = p
}
};
}
}
else
{
// Default is Falling state
return(new EnemyFallingState()
{
Angle = p.state.Angle, StateEnemy = p
});
}
}
else
{
/*** No Know Enemy Default State ***/
return(new EnemyStandingState()
{
Angle = 0
});
}
}
/// <summary>
/// This Factory Method produces the next state for every enemy calling it.
/// </summary>
/// <param name="e"> Used to determine what states are available to the enemy </param>
/// <returns> A new EnemyState Child </returns>
public static void GetNextState(Enemy e)
{
// Use Random number to choose next state
Random rand = new Random(DateTime.Now.Millisecond);
for (int i = 0; i < 999990; i++)
{
}
int chance = rand.Next(100);
if (e is Buzzard)
{
/*** Buzzard States ***/
Buzzard b = e as Buzzard;
if (b.stateMachine.currentState is EnemyStandingState)
{
if (chance % 2 == 0)
{
if (chance % 10 < 5)
{
b.stateMachine.Change("run_right");
}
else
{
b.stateMachine.Change("run_right");
}
}
else
{
b.stateMachine.Change("flap");
}
}
else if (b.stateMachine.currentState is EnemyRunningState)
{
if (chance < 2)
{
b.stateMachine.Change("stand");
}
else if (chance == 99)
{
EnemyState enemySt = b.stateMachine.currentState as EnemyState;
if (enemySt.Angle == 0)
{
b.stateMachine.Change("run_left");
}
else
{
b.stateMachine.Change("run_right");
}
}
}
else if (b.stateMachine.currentState is EnemyFlappingState)
{
EnemyState enemySt = b.stateMachine.currentState as EnemyState;
switch (enemySt.Angle)
{
case 90:
if (chance / 10 < 2 && chance % 10 < 4 || b.coords.y < 10)
{
b.stateMachine.Change("fall");
}
else if (chance % 2 == 0)
{
b.stateMachine.Change("flap_right");
}
else
{
b.stateMachine.Change("flap_left");
}
break;
default:
if (chance < 2 || b.coords.y < 10)
{
b.stateMachine.Change("flap");
}
break;
}
}
else if (b.stateMachine.currentState is EnemyFallingState)
{
EnemyState enemySt = b.stateMachine.currentState as EnemyState;
switch (enemySt.Angle)
{
case 270:
if (chance % 10 < 3 || b.coords.y > 730)
{
b.stateMachine.Change("flap");
}
else if (chance % 2 == 0)
{
b.stateMachine.Change("fall_right");
}
else
{
b.stateMachine.Change("fall_left");
}
break;
default:
if (chance < 3 || b.coords.y > 730)
{
b.stateMachine.Change("fall");
}
break;
}
}
else if (b.stateMachine.currentState is BuzzardPickupState)
{
BuzzardPickupState set_state = b.stateMachine.currentState as BuzzardPickupState;
// Determine if the Buzzard is close enough to the Mik (Hatched Egg) being picked up
if ((set_state.TargetEgg.coords.x - b.coords.x) > -5 && (set_state.TargetEgg.coords.x - b.coords.x) < 5 && ((set_state.TargetEgg.coords.y - 50) - b.coords.y) < 5 && ((set_state.TargetEgg.coords.y - 50) - b.coords.y) > -5)
{
// Picked up Mik (Hatched Egg)
set_state.TargetEgg.mounted = true;
b.droppedEgg = false;
b.stateMachine.Change("stand");
}
}
else if (b.stateMachine.currentState is BuzzardFleeingState)
{
// If none of the previous states, set state to Fleeing
b.stateMachine.Change("flee");
}
else
{
b.stateMachine.Change("flap");
}
}
else if (e is Egg)
{
/*** Egg States ***/
Egg egg = e as Egg;
if (egg.stateMachine.currentState is EnemyFallingState)
{
if (egg.coords.y > 750)
{
egg.stateMachine.Change("stand");
}
}
else
{
if (egg.seconds > 800)
{
egg.stateMachine.Change("hatched");
}
else if (egg.seconds > 600)
{
egg.seconds++;
egg.stateMachine.Change("hatching");
}
else
{
egg.seconds++;
egg.stateMachine.Change("stand");
}
}
}
else if (e is Pterodactyl)
{
/*** Pterodactyl States ***/
Pterodactyl p = e as Pterodactyl;
// *** Add charging state to attack nearby player ***
if (p.coords.y > 300 && p.coords.y < 450 && p.coords.x > 600 && p.coords.x < 700)
{
p.stateMachine.Change("charge");
}
if (p.stateMachine.currentState is EnemyFallingState)
{
EnemyState enemySt = p.stateMachine.currentState as EnemyState;
switch (enemySt.Angle)
{
case 270:
if (chance % 10 < 3 || p.coords.y > 700)
{
p.stateMachine.Change("flap");
}
else if (chance % 2 == 0)
{
p.stateMachine.Change("fall_right");
}
else
{
p.stateMachine.Change("fall_left");
}
break;
default:
if (chance < 3 || p.coords.y > 700)
{
p.stateMachine.Change("fall");
}
break;
}
}
else if (p.stateMachine.currentState is EnemyFlappingState)
{
EnemyState enemySt = p.stateMachine.currentState as EnemyState;
switch (enemySt.Angle)
{
case 90:
if (chance / 10 < 2 && chance % 10 < 4 || p.coords.y < 10)
{
p.stateMachine.Change("fall");
}
else if (chance % 2 == 0)
{
p.stateMachine.Change("flap_right");
}
else
{
p.stateMachine.Change("flap_left");
}
break;
default:
if (chance < 2 || p.coords.y < 10)
{
p.stateMachine.Change("flap");
}
break;
}
}
else if (p.stateMachine.currentState is PterodactylChargeState)
{
if (p.coords.y <= 300 || p.coords.y >= 450 || p.coords.x <= 600 || p.coords.x >= 700)
{
p.stateMachine.Change("flap");
}
}
}
}
/// <summary>
/// Determines the objects next state and fires the appropriate event
/// handler to notify the view of the state change.
/// </summary>
public override void Update()
{
//Console.WriteLine("Buzzard state = " + stateMachine.currentState.ToString());
if (!isSpawning)
{
if (!droppedEgg)
{
CheckEnemyCollision();
}
// Determine the next state
EnemyState.GetNextState(this);
stateMachine.currentState.Update();
}
if (stateMachine.currentState is EnemyFlappingState)
{
// "Gravity" purposes
if (speed > TERMINAL_VELOCITY)
{
if (prevAngle == 225 || prevAngle == 270 || prevAngle == 315)
{
speed = 0.05;
}
else
{
speed = TERMINAL_VELOCITY;
}
}
}
else if (stateMachine.currentState is EnemyFallingState)
{
// "Gravity" purposes
if (speed > TERMINAL_VELOCITY)
{
if (prevAngle == 45 || prevAngle == 90 || prevAngle == 135)
{
speed = 0.05;
}
else
{
speed = TERMINAL_VELOCITY;
}
}
}
else if (stateMachine.currentState is EnemyRunningState)
{
speed = SPEED;
}
else if (stateMachine.currentState is BuzzardFleeingState)
{
// When the Buzzard has been hit, it drops an egg and
// flies to the left side. Destroy the Buzzard when
// close enough to the edge of the screen.
if (!droppedEgg)
{
if (BuzzardDropEgg != null)
{
BuzzardDropEgg(this, null);
}
droppedEgg = true;
}
if (coords.x < 3)
{
if (BuzzardDestroyed != null)
{
BuzzardDestroyed(this, null);
}
Die();
}
}
else if (stateMachine.currentState is EnemySpawningState)
{
respawning++;
isSpawning = true;
prevAngle = 90;
angle = 90;
speed = 0.5;
imagePath = "Images/Enemy/mik_respawn.png";
if (respawning > 100)
{
if (droppedEgg)
{
stateMachine.Change("pickup");
BuzzardPickupState pState = stateMachine.currentState as BuzzardPickupState;
pState.TargetEgg = pickupEgg;
stateMachine.currentState.Update();
}
else
{
stateMachine.Change("spawn");
}
respawning = 0;
isSpawning = false;
}
}
// "Gravity" purposes
prevAngle = angle;
// Slow the rate of updating the graphic
if (updateGraphic > 3)
{
updateGraphic = 0;
}
else
{
updateGraphic++;
}
// Always fire the move event
if (BuzzardMoveEvent != null) // Is anyone subscribed?
{
BuzzardMoveEvent(this, null); // Raise event
}
// Slow the rate of updating the graphic
if (updateGraphic == 0)
{
if (BuzzardStateChange != null)
{
BuzzardStateChange(this, null);
}
}
}
