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<!DOCTYPE html>
<html>
<head>
    <title>Tower Building Game</title>
    <meta charset="utf-8">
    <style>
        body {
            margin: 0;
            overflow: hidden;
        }
        canvas {
            display: block;
        }
    </style>
</head>
<body>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/cannon/build/cannon.min.js"></script>
    <script>
        let scene, camera, renderer;
        let world, stack;
        let blocks = [];
        let currentBlock = null;
        let score = 0;

        init();
        animate();

        function init() {
            // Create a Three.js scene
            scene = new THREE.Scene();
            
            // Create a camera
            camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
            camera.position.set(0, 50, 100);
            camera.lookAt(0, 0, 0);

            // Create a renderer
            renderer = new THREE.WebGLRenderer({ antialias: true });
            renderer.setSize(window.innerWidth, window.innerHeight);
            document.body.appendChild(renderer.domElement);

            // Add lights to the scene
            let ambientLight = new THREE.AmbientLight(0xffffff, 0.5);
            scene.add(ambientLight);

            let directionalLight = new THREE.DirectionalLight(0xffffff, 0.5);
            directionalLight.position.set(0, 100, 100);
            scene.add(directionalLight);

            // Add ground plane to the scene
            let planeGeometry = new THREE.PlaneGeometry(100, 100);
            let planeMaterial = new THREE.MeshPhongMaterial({ color: 0xffffff });
            let plane = new THREE.Mesh(planeGeometry, planeMaterial);
            plane.rotation.x = -Math.PI / 2;
            scene.add(plane);

            // Create a physics world
            world = new CANNON.World();
            world.gravity.set(0, -9.82, 0);
            world.broadphase = new CANNON.NaiveBroadphase();
            world.solver.iterations = 10;

            // Create a ground plane in the physics world
            let groundShape = new CANNON.Plane();
            let groundBody = new CANNON.Body({ mass: 0 });
            groundBody.addShape(groundShape);
            groundBody.quaternion.setFromAxisAngle(new CANNON.Vec3(1, 0, 0), -Math.PI / 2);
            world.addBody(groundBody);

            // Add event listeners for input
            document.addEventListener('keydown', onKeyDown, false);
        }

        function animate() {
            requestAnimationFrame(animate);

            // Step the physics world
            world.step(1 / 60);

            // Update the position of the blocks in the Three.js scene
            for (let i = 0; i < blocks.length; i++) {
                let block = blocks[i];
                let body = block.userData.physicsBody;
                block.position.copy(body.position);
                block.quaternion.copy(body.quaternion);
            }

            // Render the scene
            renderer.render(scene, camera);
        }

        function createBlock() {
            // Create a block object in the Three.js scene
            let blockGeometry = new THREE.BoxGeometry(10, 10, 10);
            let blockMaterial =        new THREE.MeshPhongMaterial({ map: new THREE.TextureLoader().load('block_texture.jpg') });
        let block = new THREE.Mesh(blockGeometry, blockMaterial);
        block.position.set(0, 5, 0);
        scene.add(block);
        blocks.push(block);
        currentBlock = block;

        // Create a physics body for the block
        let blockShape = new CANNON.Box(new CANNON.Vec3(5, 5, 5));
        let blockBody = new CANNON.Body({ mass: 1 });
        blockBody.addShape(blockShape);
        blockBody.position.set(0, 15, 0);
        world.addBody(blockBody);
        block.userData.physicsBody = blockBody;
    }

    function placeBlock() {
        if (currentBlock) {
            let position = currentBlock.position.clone();
            let body = currentBlock.userData.physicsBody;
            body.position.copy(position);
            body.velocity.set(0, 0, 0);
            body.angularVelocity.set(0, 0, 0);
            stack.push(currentBlock);
            currentBlock = null;
        }
    }

    function steerBlock(direction) {
        if (currentBlock) {
            let position = currentBlock.position.clone();
            position.x += direction * 10;
            currentBlock.position.copy(position);
        }
    }

    function onKeyDown(event) {
        if (event.keyCode === 65) { // A key
            steerBlock(-1);
        } else if (event.keyCode === 68) { // D key
            steerBlock(1);
        } else if (event.keyCode === 32) { // Spacebar
            placeBlock();
            let stability = checkStability();
            if (stability) {
                score += Math.pow(2, stack.length);
                document.getElementById('score').innerHTML = 'Score: ' + score;
            } else {
                alert('Game Over!');
            }
        }
    }

    function checkStability() {
        let positions = [];
        for (let i = 0; i < stack.length; i++) {
            let block = stack[i];
            let position = block.userData.physicsBody.position;
            positions.push(position.clone());
        }
        for (let i = 0; i < stack.length - 1; i++) {
            let block1 = stack[i];
            let position1 = positions[i];
            for (let j = i + 1; j < stack.length; j++) {
                let block2 = stack[j];
                let position2 = positions[j];
                let distance = position1.distanceTo(position2);
                if (distance < 10) {
                    return false;
                }
            }
        }
        return true;
    }

    function resetGame() {
        // Remove all blocks from the scene and the physics world
        while (blocks.length > 0) {
            let block = blocks.pop();
            scene.remove(block);
            world.remove(block.userData.physicsBody);
        }

        // Reset the stack and the score
        stack = [];
        score = 0;
        document.getElementById('score').innerHTML = 'Score: ' + score;

        // Create a new block
        createBlock();
    }

    resetGame();
</script>
<div id="score" style="position: absolute; top: 10px; left: 10px; font-size: 24px; font-weight: bold; color: white;"></div>
<button onclick="resetGame()" style="position: absolute; top: 10px; right: 10px; font-size: 24px;">Restart</button>

</body>
</html>