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Thread: saftly detecting type of a script variable

  1. #1

    Default saftly detecting type of a script variable

    I was wondering if there is some sort of check to detect the type of a variable ?
    Like string, int, vector or entity.

    I have a concept for a reliably working type detector which I am going to code unless there is something that can do this already.
    The purpose is that in the coop mod parameters sometimes need to be a entity or a int, I don't want to have two functions and I don't want to convert all the time.

  2. #2
    Developer RyBack's Avatar
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    Default

    reborn has typeof.
    Normal mohaa doesn't. Casting can be use to tell if variable is of that cast type, except for separate cases where a string "10" could be casted to an int 10 (you can use .size to tell it was string tho).

  3. #3

    Default

    Well, we are trying to get the mod working without anything else needed (regardless if that is a smart thing or not), we can upgrade or modify things later.

    After some thinking and testing I came up with this code.
    There might be room for improvement, feel free to comment.
    So far I am pleased with the result, this will make many problems go away.

    PHP Code:
    //return type of variable
    //performs a series of checks to determine the variable type ?
    //type: 0-NIL, 1-string,2-entity,3-vector,4-int/float
    //-1 could not detect type
    //=========================================================================
    returnVarType local.var:{
    //=========================================================================
        
    if(local.var == NIL){ end 0 }

        
    local.stringified string(local.var)
        
    local.stringifiedSize local.stringified.size
        
    //var is of type entity or string
        
    if(local.var.size == 0){
        
    //it can be either a empty string or a entity
            
    if(local.stringifiedSize == ){ end 1 }
            else{ 
    end 2 }
        }
    //var is type of integer, entity or vector or singleletter string
        
    else if(local.var.size == 1){
            
    local.firstChar string(local.stringified[0])
        
    //assume it is a vector if it is in brackets
            
    if( local.stringified[0] == "(" && local.stringified[local.stringifiedSize-1] == ")" ){
                
    end 3
            
    }
        
    //note: cant detect entities with a targetname < 2 chars
            
    if(local.stringifiedSize 1){
            
    //entity targetnames never start with a number or a colon not a number will be 0 when converted
                
    if(    int(local.firstChar) == && int(local.stringified) == && local.stringified != "0.000" && local.stringified[0] != "."){
                    
    end 2
                
    }            
                if( 
    waitthread isFloat == || int(local.stringified) != 0){
                    
    end 4
                
    }
            }else{
                if(
    int(local.stringified) != || local.stringified == "0" || local.stringified != "0.000"){
                    
    end 4
                
    }
            }
        
    //fallback to string
            
    end 1
        
    }
    //must be a string
        
    else{
            
    end 1
        
    }
    }
    end -1

    //check if it is a float, game makes sure float always has 3 digits after the dot
    //=========================================================================
    isFloat local.var:{
    //=========================================================================
        
    local.stringified string(local.var)
        if( 
    local.stringified == "0.000" ){ end 1 }
        if( 
    float(local.stringified) == ){ end 0 }
        
        
    local.dotAt = -1
        local
    .afterDot 0
        
    for(local.i=0;local.i<local.stringified.size;local.i++){
            if(
    local.afterDot != -1){
                
    local.afterDot++
            }
            if(
    local.stringified[local.i] == "."){
                
    local.dotAt local.i
                local
    .afterDot 0
            
    }
        }
        
        if(
    local.afterDot == 3){ end 1    }
    }
    end 0 
    Last edited by chrissstrahl; September 15th, 2019 at 09:02 PM.

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