CollisionTest

Test two arrays for collisions

Syntax: CollisionTest(source1[],source2[],dest[],val=1;sizes1=sizeof source1,sizes2=sizeof source2,sized=sizeof dest)

• source1 first source array for collision test

• source2 second source array for collision test

• dest destination array to store result from collision test

• val value indicating collision to be stored into destination array

• sizes sizes of all arrays that must be same

Notes: Destination array is cleared prior the operation. Collision is performed by easy condition if (source1[index] && source2[index]) {dest[index]=val}

Returns: returns number of collision points

Example:

• if (CollisionTest(a, b)) {....} test number of collision points without using dest

• if (CollisionTest(a, b, dest, WHITE)) {....}, test number of collision points and stores WHITE into dest