More Sensitive Step Combos

//import "std.zh"

// More Sensitive Step Combos
// v0.6
// 19th July, 2018
// By: ZoriaRPG, requested by DarkMatt

const int CT_MISC_STEP_SRC = 250; //This type cannot be assigned in the EDITOR, but can be defined by script.
    //In 2.54+, this type *can be* set in the editor.
const int CT_MISC_STEP_DONE = 251;
const int STEP_SENS_DEFAULT = 8; //pixels

global script test
{
    void run()
    {
        while(1)
        {
            steps.checks(STEP_SENS_DEFAULT);
            Waitdraw();
            Waitframe();
        }
    }
}

ffc script steps
{
    void run(int sens)
    {
        sens = Cond(sens > 0, sens, STEP_SENS_DEFAULT);
        int pos; int type; int w;
        while(1)
        {

            for ( pos = 0; pos < 176; ++pos )
            {
                type = istype(pos);
                if ( type ) //assign is intentional
                    // Sadly, i forgot that assign during a statement isn't yet supported.
                //if ( ( type = istype(pos,type) ) ) //assign is intentional
                {
                    if ( coll(pos,sens) )
                    {
                        if ( type == CT_STEP )
                        {
                            ++Screen->ComboD[pos];
                            for ( w = 0; w < 176; ++w )
                            {
                                if ( w == pos ) continue;
                                if (istype(w) == CT_STEPCOPY )
                                    ++Screen->ComboD[pos];
                            }

                        }
                        if ( type == CT_STEPALL )
                        {
                            //find all identical combos
                            for ( w = 0; w < 176; ++w )
                            {
                                //if ( w == pos ) continue;
                                if (istype(w) == type )
                                    ++Screen->ComboD[pos];
                            }
                        }
                        if ( type == CT_STEPALL )
                        {
                            int dat = Screen->ComboD[pos];
                            //find all identical combos
                            for ( w = 0; w < 176; ++w )
                            {
                                //if ( w == pos ) continue;
                                if (Screen->ComboD[w] == dat )
                                    ++Screen->ComboD[pos];
                            }
                        }
                        if ( type == CT_STRIGFLAG )
                        {
                            Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                            Screen->TriggerSecrets();
                            Screen->State[ST_SECRET] = true;
                            Game->PlaySound(SFX_SECRET);
                        }
                        if ( type == CT_TRIGFLAG )
                        {
                            Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                            Screen->TriggerSecrets();
                            Screen->State[ST_SECRET] = true;
                            Game->PlaySound(SFX_SECRET);
                        }
                        if ( type == CT_TRIGNOFLAG )
                        {
                            Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                            Screen->TriggerSecrets();
                            Game->PlaySound(SFX_SECRET);
                        }
                        if ( type == CT_STRIGNOFLAG )
                        {
                            Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                            Screen->TriggerSecrets();
                            Game->PlaySound(SFX_SECRET);
                        }
                    }

                }

            }
            Waitframe();

        }


    }
    //Typecheck a combo type given as 'pos' (screen index 0->175) against a
    //series of valid types.
    //Returns the same type on success, otherwise 0.
    int istype(int pos)
    {
        int t = Screen->ComboT[pos];
        if ( t == CT_STEP ) return t;
        if ( t == CT_STEPALL ) return t;
        if ( t == CT_STEPSAME ) return t;
        if ( t == CT_STEPCOPY ) return t;
        if ( t == CT_STRIGFLAG ) return t; //Step (Secrets, Sensitive, Permanent)
        if ( t == CT_STRIGNOFLAG ) return t; //Step (Secrets, Sensitive, Temporary)
        if ( t == CT_TRIGFLAG ) return t; //Step (Secrets, Permanent)
        if ( t == CT_TRIGNOFLAG ) return t; //Step (Secrets, Temporary)
        return 0;
    }

    //Marks a given combo position as a step source.
    //Used for base step types that transfer their properties to other combos.
    void mark(int pos)
    {
        Screen->ComboT[pos] = CT_MISC_STEP_SRC;
    }
    //Returns true is Link is stepping on a combo at position 'pos' within
    //the given sensitivty 'sens' in pixels.
    bool coll(int pos, int sens)
    {

        if ( Abs(Link->X - ComboX(pos)) <= sens )
        {
            if ( Abs(Link->Y - ComboX(pos)) <= sens )
            {
                return true;
            }
        }
        return false;
    }
    //Runs the checks for the supported step cmbo types.
    void checks(int sens)
    {
        sens = Cond(sens > 0, sens, STEP_SENS_DEFAULT); //assign the default if no other value is provided.
        int pos; int type; int w;
        //scan the 176 positions of the combo grid
        for ( pos = 0; pos < 176; ++pos )
        {
            type = istype(pos);
            //check if the current iteration position is a matching type
            if ( type ) //assign is intentional
            {
                //and if there is collision...
                if ( coll(pos,sens) )
                {
                    ///based on the type, perform the requisite actions
                    //to replicate engine behaviour
                    if ( type == CT_STEP )
                    {
                        ++Screen->ComboD[pos]; //advance to the next combo
                        //find copy and similar combo types that would be affected
                        //at the same time, and apply the changes to those, too
                        for ( w = 0; w < 176; ++w )
                        {
                            if ( w == pos ) continue; //ignore src combo
                            if (istype(w) == CT_STEPCOPY )
                                ++Screen->ComboD[pos];
                        }

                    }
                    if ( type == CT_STEPALL )
                    {
                        //find all identical combos and apply to them
                        for ( w = 0; w < 176; ++w )
                        {
                            //if ( w == pos ) continue; //probably not here
                            if (istype(w) == type )
                                ++Screen->ComboD[pos];
                        }
                    }
                    if ( type == CT_STEPSAME )
                    {
                        int dat = Screen->ComboD[pos];
                        //find all identical combos
                        for ( w = 0; w < 176; ++w )
                        {
                            //if ( w == pos ) continue; probably not here, either
                            if (Screen->ComboD[w] == dat )
                                ++Screen->ComboD[pos];
                        }
                    }
                    //secret triggrs
                    if ( type == CT_STRIGFLAG )
                    {
                        Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                        Screen->TriggerSecrets(); //triggers ALL secrets
                        Screen->State[ST_SECRET] = true; //make them permanent
                        Game->PlaySound(SFX_SECRET);
                    }
                    if ( type == CT_TRIGFLAG )
                    {
                        Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                        Screen->TriggerSecrets();
                        Screen->State[ST_SECRET] = true;
                        Game->PlaySound(SFX_SECRET);
                    }
                    //these two are temporary, so ST_SECRET is not set
                    if ( type == CT_TRIGNOFLAG )
                    {
                        Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                        Screen->TriggerSecrets();
                        Game->PlaySound(SFX_SECRET);
                    }
                    if ( type == CT_STRIGNOFLAG )
                    {
                        Screen->ComboT[pos] = CT_MISC_STEP_DONE;
                        Screen->TriggerSecrets();
                        Game->PlaySound(SFX_SECRET);
                    }
                }

            }

        }
    }
}