3D Game Programming

function addScoreboard() {

var scoreboard = new Scoreboard();

scoreboard.score(0);

scoreboard.timer();

scoreboard.help(

'left / right arrow keys to turn. ' +

'space bar to move forward.'

);

return scoreboard;

}

function addRiver(scene) {

var ground = makeGround(500);

addWater(ground, 500);

addLid(ground, 500);

scene.add(ground);

return ground;

}

function makeGround(size) {

var faces = 100;

var shape = new THREE.PlaneGeometry(size, size, faces, faces);

var river_points = digRiver(shape, faces + 1);

var cover = Physijs.createMaterial(

new THREE.MeshPhongMaterial({

emissive: new THREE.Color(0x339933), // a little green

specular: new THREE.Color(0x333333) // dark gray / not shiny

}),

1, // high friction (hard to move across)

0.1 // not very bouncy

);

var ground = new Physijs.HeightfieldMesh(

shape, cover, 0

);

ground.rotation.set(-Math.PI/2, 0.2, -Math.PI/2);

ground.receiveShadow = true;

ground.castShadow = true;

ground.river_points = river_points;

return ground;

}

function digRiver(shape, size) {

var center_points = [];

for (var row=0; row<size; row++) {

report erratum • discuss

Code: River Rafting • 267

Prepared exclusively for Michael Powell