Unity 2018 Artificial Intelligence Cookbook - Second Edition

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We can develop a more flexible algorithm by defining different types of walls that affect sound intensity. It works by casting rays and adding up their values to the sound attenuation:

1. Create a dictionary for storing wall types as strings (using tags) and their corresponding attenuation:

public Dictionary<string, float> wallTypes; 

2. Reduce sound intensity this way:

intensity -= GetWallAttenuation(emitterPos, srPos); 

3. Define the function that was called in the previous step:

public float GetWallAttenuation(Vector3 emitterPos, Vector3 receiverPos) 
{ 
    // next steps here 
} 

4. Compute the necessary values for ray casting:

float attenuation = 0f; Vector3 direction = receiverPos - emitterPos; float distance = direction.magnitude; ...