Volleymode explained [modding]

What is volleymode: Volleymode is a param for units/buildings with multiple projectiles in the proto file. Without volleymode units are 100% accurate against buildings.
Against units: It doesn’t affect the initial accuracy against units, but nullifies the aimbonus. Aimbonus increases the accuracy after every shot. Units with multiple projectiles without volleymode (siege ships) get the aimbonus for all af their projectiles, therefore their accuracy is much better for the second shot.
Against buildings: For example an unit without volleymode like Dragon Ship is 100% accurate against Tower, but Petrobolos with volleymode isn’t, some of the projectiles usually miss. Projectiles with volleymode sometimes also hit other nearby buildings, for example when there is a Wall front of the Tower.