function IsCollised takes real x,real y returns boolean
    local unit u= CreateUnit(Player(15) , 'ewsp' , x , y , 0)
    local real x2= GetUnitX(u)
    local real y2= GetUnitY(u)
    
    call RemoveUnit(u)
    set u = null
    
    if x2 > x + 1 or x2 < x - 1 or y2 > y + 1 or y2 < y - 1 then
        return true
    endif
    return false
endfunction


    function s__Spell__proj_move takes integer this returns nothing
        set s__Spell__proj_x[this]=s__Spell__proj_x[this] + Cos(s__Spell__proj_a[this]) * Spell__speed
        set s__Spell__proj_y[this]=s__Spell__proj_y[this] + Sin(s__Spell__proj_a[this]) * Spell__speed
        
        call SetUnitPosition(s__Spell__proj_u[this] , s__Spell__proj_x[this] , s__Spell__proj_y[this])
        if s__Spell__proj_check[this] < 0 then
            set s__Spell__proj_check[this]=Spell__CollisionCheckFrequency
        endif
        if IsCollised(s__Spell__proj_x[this] , s__Spell__proj_y[this]) and s__Spell__proj_check[this] <= 0 then
            call sc__Spell__proj_explode(this)
        endif
        set s__Spell__proj_check[this]=s__Spell__proj_check[this] - 1
    endfunction