# Upgrade Is Allowed For Player

Grammar — inUpgrade is allowed for player inPlayer
Flags — Native | Function

Returns true if an upgrade is allowed for the specified player. Use “Allow/Disallow Upgrade For Player” to modify this.

# Arguments

• int — Player
• string<gamelink::Upgrade> — Upgrade

Returns — bool

native bool TechTreeUpgradeIsAllowed(
	int player,
	string upgradeType,
);

# Related

Category: Tech Tree / Individual Restrictions

• Specific Requirements Are Enabled For Player — bool — TechTreeSpecificRequirementEnabled
• Enable/Disable SpecificTech Tree Requirements — void — TechTreeSpecificRequirementEnable
• Allow/Disallow Behavior For Player — void — TechTreeBehaviorAllow
• Allow/Disallow Ability For Player — void — TechTreeAbilityAllow
• Allow/Disallow Unit For Player — void — TechTreeUnitAllow
• Allow/Disallow Upgrade For Player — void — TechTreeUpgradeAllow
• Ability Is Allowed For Player — bool — TechTreeAbilityIsAllowed
• Behavior Is Allowed For Player — bool — TechTreeBehaviorIsAllowed
• Unit Is Allowed For Player — bool — TechTreeUnitIsAllowed
• Upgrade Is Allowed For Player — bool — TechTreeUpgradeIsAllowed
• Add Upgrade Level For Player — void — TechTreeUpgradeAddLevel
• Set Upgrade Level For Player — void — libNtve_gf_SetUpgradeLevelForPlayer
• Set Production Cap For Player — void — TechTreeSetProduceCap
• Production Cap For Player — int — TechTreeGetProduceCap

# Examples

campaigns/voidstory.sc2campaign — base.sc2data/TriggerLibs/VoidCampaignLib.galaxy:1506

    // Implementation
    libVoiC_gf_PC_UpdateWeaponArmorUpgrades(1);
    if ((TechTreeUpgradeIsAllowed(1, "ProtossAirWeaponsLevel1") == true) && (libVoiC_gv_pCX_UpgradesTaught == false)) {
        libVoiC_gv_pCX_UpgradesTaught = true;
    }

campaigns/voidstory.sc2campaign — base.sc2data/TriggerLibs/VoidCampaignMissionLib.galaxy:3477

        Wait(0.1, c_timeGame);
    }
    if ((libVoiC_gv_pCX_UpgradesTaught == false) && (libVCMI_gv_pM_UpgradeUnit == null) && (UnitGetType(lp_teachUnit) == "CyberneticsCore") && (TechTreeUpgradeIsAllowed(1, "ProtossAirWeaponsLevel1") == true) && (libVoiC_gf_PC_CampaignInEpilogue() == false)) {
        if ((libNtve_gf_UnitIsUnderConstruction(lp_teachUnit) == true)) {
            while (true) {