idle-game/js/prestige.js

/**
 * Cosmic Garden - Prestige System
 * Allows resetting progress for permanent Stellar Essence bonuses
 */

const PRESTIGE = {
    /**
     * Calculate Stellar Essence earned from prestiging
     * Formula: floor(sqrt(totalStardust / 1,000,000))
     */
    calculateEssence() {
        const totalStardust = Game.state.totalStardust || 0;
        return Math.floor(Math.sqrt(totalStardust / 1e6));
    },

    /**
     * Get the current prestige multiplier from essence
     * Each essence provides +10% production bonus
     */
    getMultiplier() {
        const essence = Game.state.stellarEssence || 0;
        return 1 + (essence * 0.1);
    },

    /**
     * Perform the prestige reset
     */
    prestige() {
        const essenceGain = this.calculateEssence();
        
        if (essenceGain <= 0) {
            UI.showNotification('Need more stardust to prestige!', 'warning');
            return false;
        }

        // Reset game state but keep essence and prestige count
        const previousPrestigeCount = Game.state.prestigeCount || 0;
        const previousEssence = Game.state.stellarEssence || 0;
        const newEssence = previousEssence + essenceGain;

        Game.state = {
            stardust: 0,
            totalStardust: 0,
            totalClicks: 0,
            clickPower: 1,
            startTime: Date.now(),
            lastSaveTime: Date.now(),
            buildings: {},
            upgrades: [],
            achievements: [],
            stellarEssence: newEssence,
            prestigeCount: previousPrestigeCount + 1,
            totalPrestigeEssence: (Game.state.totalPrestigeEssence || 0) + essenceGain,
            prestigeUpgrades: Game.state.prestigeUpgrades || []
        };

        // Audio feedback (gated by the sound preference)
        Game.playSound('prestige');

        // Particle effect for prestige
        const btn = document.getElementById('prestige-btn');
        if (btn) {
            const rect = btn.getBoundingClientRect();
            Particles.createPrestigeEffect(rect.left + rect.width / 2, rect.top + rect.height / 2);
        }

        UI.showNotification(
            `✦ Prestige! Earned ${essenceGain} Stellar Essence! (${newEssence} total)`,
            'achievement'
        );

        UI.update();
        return true;
    },

    /**
     * Buy a prestige upgrade
     */
    buyUpgrade(upgradeId) {
        const upgrade = PRESTIGE_UPGRADES[upgradeId];
        if (!upgrade || Game.state.prestigeUpgrades?.includes(upgradeId)) {
            return false;
        }

        if (Game.state.stellarEssence >= upgrade.cost) {
            Game.state.stellarEssence -= upgrade.cost;
            Game.state.prestigeUpgrades = Game.state.prestigeUpgrades || [];
            Game.state.prestigeUpgrades.push(upgradeId);

            UI.showNotification(`Unlocked: ${upgrade.name}!`, 'achievement');
            Game.playSound('purchase');
            UI.update();
            return true;
        }

        return false;
    },

    /**
     * Get the effective click power with prestige bonus
     */
    getEffectiveClickPower() {
        const basePower = Game.getClickPower();
        const multiplier = this.getMultiplier();
        return Math.floor(basePower * multiplier);
    },

    /**
     * Get the effective production per second with prestige bonus
     */
    getEffectiveProductionPerSecond() {
        const baseProduction = Game.getProductionPerSecond();
        const multiplier = this.getMultiplier();
        return baseProduction * multiplier;
    }
};

/**
 * Prestige Upgrades - Permanent bonuses purchased with Stellar Essence
 */
const PRESTIGE_UPGRADES = {
    cosmicFingers: {
        id: 'cosmicFingers',
        name: 'Cosmic Fingers',
        description: 'Click power x2 (permanent)',
        icon: '👆',
        cost: 10,
        effect: 'clickMultiplier',
        value: 2
    },

    stellarTouch: {
        id: 'stellarTouch',
        name: 'Stellar Touch',
        description: 'Click power x3 (permanent)',
        icon: '✨',
        cost: 50,
        effect: 'clickMultiplier',
        value: 3
    },

    essenceAmplifier: {
        id: 'essenceAmplifier',
        name: 'Essence Amplifier',
        description: 'All production x1.5 (permanent)',
        icon: '💎',
        cost: 25,
        effect: 'productionMultiplier',
        value: 1.5
    },

    quantumGarden: {
        id: 'quantumGarden',
        name: 'Quantum Garden',
        description: 'All production x2 (permanent)',
        icon: '🌌',
        cost: 100,
        effect: 'productionMultiplier',
        value: 2
    },

    acceleratedGrowth: {
        id: 'acceleratedGrowth',
        name: 'Accelerated Growth',
        description: 'Buildings cost 10% less (permanent)',
        icon: '📉',
        cost: 75,
        effect: 'costReduction',
        value: 0.9
    },

    temporalManipulation: {
        id: 'temporalManipulation',
        name: 'Temporal Manipulation',
        description: 'Offline earnings 75% (was 50%)',
        icon: '⏰',
        cost: 200,
        effect: 'offlineBonus',
        value: 0.75
    }
};

window.PRESTIGE = PRESTIGE;
window.PRESTIGE_UPGRADES = PRESTIGE_UPGRADES;