/// <summary>
/// Intilises all systems required for this scene and updates SystemManager
/// </summary>
private void CreateSystems()
{
// Intialises all systems needed in this scene and add them to SystemManager
ISystem newSystem;
// Creates the system to calculate the SkyBox
newSystem = new SystemSkyBox(ref sceneManager.camera);
systemManager.AddSystem(newSystem);
// Creates an array of light point for use in SystemRenderer
Vector3[] array = new Vector3[] {
new Vector3(0.0f, 1.0f, 0.0f),
new Vector3(17.0f, 1.0f, 15.0f),
new Vector3(17.0f, 1.0f, -15.0f),
new Vector3(-17.0f, 1.0f, 15.0f),
new Vector3(-17.0f, 1.0f, -15.0f)
};
// Creates the system to calculate all the rendering (including lighting)
newSystem = new SystemRender(ref sceneManager.camera, array);
systemManager.AddSystem(newSystem);
// Creates the system to calculate all the collision (and trigger) events
newSystem = new SystemCollider(ref entityManager, ref sceneManager.camera);
systemManager.AddSystem(newSystem);
// Creates the system to calculate all the AI paths and behaviours
newSystem = new SystemAI(50, 50, entityManager.Entities().ToArray());
systemManager.AddSystem(newSystem);
// Creates the system to update all the audio effects
newSystem = new SystemAudio();
systemManager.AddSystem(newSystem);
// Creates the system to calculate all the animation transformions
newSystem = new SystemAnimator();
systemManager.AddSystem(newSystem);
}
/// <summary>
/// Method to organise the trigger collsion detection
/// </summary>
private void ManageTriggerCollisions()
{
// Get access to the collision system to find out which entity (if any) have caused a trigger
// (Trigger describes entity with collision that is not rigid e.g. pickup item compared to a wall)
SystemCollider collide = (SystemCollider)systemManager.FindSystem("SystemCollider");
// Checks to make sure checks only run if a trigger has occured
if (collide.GetEntityCollisionTrigger() != null && collide.GetEntityCollisionTrigger() != "")
{
// First check is to see if the player has collided with any of the ghosts
// Works by developing the entities xml file with consitent and sensible names per entity
if (collide.GetEntityCollisionTrigger().Contains("Ghost"))
{
// If the player picked up a power up within the last 10seconds then the player damages the ghost
// Otherwise the ghost damages the player, removing a life and reseting both player and ghosts positions to the starting points
if (isPowerUp)
{
// Updates sound effects settings and plays sound effect
SoundEffects[3].UpdateEmitterPosition(sceneManager.camera.Position);
SoundEffects[3].VolumeOfAudio = 1.0f;
SoundEffects[3].PlayAudio();
// Sets the positon of the ghost that was hit to the starting position
ComponentPosition Pos = (ComponentPosition)entityManager.FindEntity(collide.GetEntityCollisionTrigger()).FindComponent(ComponentTypes.COMPONENT_POSITION);
Pos.Position = StartPosition_Ghost;
// Updates the players score
PlayerScore += 10;
}
else
{
// Player has been hit by a ghost so a life is taken off and players position set back to the starting positon
NumberOfLives--;
sceneManager.camera.Position = StartPosition_Player;
// This could be improved, the collision detection keeps track of players last position
// If it isn't updated the after the player is moved to the starting point they will be moved straight back again
collide.UpdateLastPosition(StartPosition_Player);
// Plays sound effect for player getting hit by a ghost and updates it settings
SoundEffects[1].UpdateEmitterPosition(sceneManager.camera.Position);
SoundEffects[1].VolumeOfAudio = 20.0f;
SoundEffects[1].PlayAudio();
// All ghosts will have their positions reset to the starting position
for (int i = 0; i < NumberOfGhost; i++)
{
ComponentPosition Pos = (ComponentPosition)entityManager.FindEntityWithMask(ComponentTypes.COMPONENT_AI)[i].FindComponent(ComponentTypes.COMPONENT_POSITION);
Pos.Position = StartPosition_Ghost;
}
// Finally checks if the player has run out of lives and if so it moves to the game over scene
if (NumberOfLives <= 0)
{
sceneManager.NextScene();
}
}
// Clears the last trigger so it doesn't get stuck in an infinite loop
collide.ClearLastTrigger();
}
// Checks if the player has collided with one of the coins
// Again making use of using consitent and sensible names in the entities xml files
else if (collide.GetEntityCollisionTrigger().Contains("coin"))
{
// Plays the pick up sound for a coin and updates the sound effects settings
SoundEffects[0].UpdateEmitterPosition(sceneManager.camera.Position);
SoundEffects[0].VolumeOfAudio = 0.2f;
SoundEffects[0].PlayAudio();
// Coin has been hit so it is now removed from the entity list so it wont be managed anymore in this instance of this game scene
entityManager.RemoveEntity(collide.GetEntityCollisionTrigger());
// Clears pickable collision check
collide.ClearLastPickable();
// Updates the players score and how many coins their have collected
// These are seperate as the players score can be added to by things outside of pickups such as killing a ghost
PlayerScore++;
CoinsCollected++;
}
// Checks if the player has collcied with one of the powerup items
// Again making use of using consitent and sensible names in the entities xml files
else if (collide.GetEntityCollisionTrigger().Contains("power"))
{
// Sets the bool for is the player powered up or not to true
isPowerUp = true;
// Sets the value for how long the powerup is to last 1.0f = 1 second
PowerUpTimer = 10.0f;
// Plays the sound effect for the power up being picked up
SoundEffects[2].UpdateEmitterPosition(sceneManager.camera.Position);
SoundEffects[2].VolumeOfAudio = 0.4f;
SoundEffects[2].PlayAudio();
// Just like the coin it has been collected so needs to be removed for entity list so its no longer managed
entityManager.RemoveEntity(collide.GetEntityCollisionTrigger());
collide.ClearLastPickable();
// Updates the players score and items collected
PlayerScore += 5;
CoinsCollected++;
}
}
}
