SC2Mapster

// *Notes* 
//  - You must create a dummy ability of type "Modify Unit" for these triggers to work.
//  - This assumes you have your veterancy ability using levels at xp amounts that can be defined by a formula (which you can change).
//  - It is possible to gain multiple levels at once using these triggers.
//  - If multiple levels are gained, triggers of type TriggerAddEventUnitGainLevel will only fire one time (not once per level)!
 
// Change this to a defualt "Modify Unit" effect
const string c_xp_abil = "AddXP";
 
// Change this to match your xp leveling formula
// This one generates the following values:
// Level 1 - 100xp, Level 2 - 300xp, Level 3 - 600xp, Level 4 - 1000xp, Level 5 - 1500xp, etc.
int GetXPNeededForLevel(int level)
{
    return (level * (level + 1)) * 50;
}
 
void HeroAddXP(unit target, int amount)
{
    int player = UnitGetOwner(target);
    CatalogFieldValueSet(c_gameCatalogEffect, c_xp_abil, "XP", player, IntToString(amount));
    PlayerCreateEffectUnit(player, c_xp_abil, target);
}
 
int HeroGetRequiredXP(unit target, int level)
{
    int curXP = FixedToInt(UnitXPTotal(target));
    return GetXPNeededForLevel(level) - curXP;
}
 
int HeroGetRequiredXPForNextLevel(unit target)
{
    return HeroGetRequiredXP(target, UnitLevel(target) + 1);
}
 
void HeroSetLevel(unit target, int level)
{
    // Xp is applied 2 times to avoid interface bugs
    int xpNeeded = HeroGetRequiredXP(target, level - 1);
 
    if(xpNeeded > 0)
    {
        HeroAddXP(target, xpNeeded);
    }
 
    HeroAddXP(target, HeroGetRequiredXP(target, level));
}
 
void HeroLevelUp(unit target, int numLevels)
{
    HeroSetLevel(target, UnitLevel(target) + numLevels);
}