Gameplay Testing

What is gameplay testing?

Gameplay testing plays through your game to verify that all features work, mechanics are balanced, and the experience is fun.

Benefits of gameplay testing?

• Find gameplay bugs
• Test all features
• Balance difficulty
• Check user experience
• Verify game mechanics

// Gameplay test checklist
const gameplayTests = {
    playerMovement: function() {
        // Test: Can player move?
        const player = { x: 100, y: 300 };
        player.x += 10;
        console.log("Player moved to:", player.x); // Should be 110
    },
    
    collisionDetection: function() {
        // Test: Does collision work?
        const player = { x: 100, y: 300, size: 50 };
        const wall = { x: 120, y: 300, size: 50 };
        
        const colliding = !(player.x + player.size < wall.x || 
                           player.x > wall.x + wall.size);
        console.log("Collision detected:", colliding);
    },
    
    enemyAI: function() {
        // Test: Does enemy respond?
        const enemy = { x: 200, y: 300, state: 'idle' };
        enemy.state = 'attacking';
        console.log("Enemy attacking:", enemy.state === 'attacking');
    }
};

What does this code do?

• Tests player movement mechanics
• Tests collision detection system
• Tests enemy AI behavior
• Verifies each game feature works
• Shows test-driven development approach
• Organizes tests by feature

// Gameplay session test
function playGameSession() {
    const gameState = {
        playerHealth: 100,
        playerScore: 0,
        enemiesDefeated: 0,
        level: 1
    };
    
    // Simulate gameplay
    console.log("Game started - Level", gameState.level);
    
    // Player takes damage
    gameState.playerHealth -= 25;
    console.log("Player health:", gameState.playerHealth);
    
    // Player defeats enemy
    gameState.score += 100;
    gameState.enemiesDefeated++;
    console.log("Enemy defeated! Score:", gameState.playerScore);
    
    // Check win condition
    if (gameState.enemiesDefeated >= 3) {
        console.log("Level completed! Moving to next level");
        gameState.level++;
    }
    
    // Check lose condition
    if (gameState.playerHealth <= 0) {
        console.log("Game Over!");
    }
}

What does this code do?

• Simulates a complete gameplay session
• Tests player damage mechanics
• Tests enemy defeat mechanics
• Tests score tracking
• Tests win condition (defeated enough enemies)
• Tests lose condition (health to zero)
• Shows how to manually test gameplay

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layout: post title: Gameplay Testing description: Learn about gameplay testing permalink: /gameplay_testing author: Vihaan Budhraja —

Try It Yourself

%%js // CODE_RUNNER: gameplay-testing const gameState = { player: { health: 100, x: 0, y: 0 }, enemy: { health: 50, x: 400, y: 300 } };

function simulateAttack() { gameState.enemy.health -= 25; return gameState.enemy.health > 0; }

console.log(“Before: “ + gameState.enemy.health); const isAlive = simulateAttack(); console.log(“After: “ + gameState.enemy.health); console.log(“Enemy alive: “ + isAlive);