<code>

//物体透视位置
private function move(tree:GameTree):void {
var angle:Number = (gameRotation - 90) / 180 * Math.PI;
var cosY:Number = Math.cos(angle);
var sinY:Number = Math.sin(angle);
var vx:int = tree.xpos + xPos;
var vy:int = tree.zpos - yPos;
var tx:Number = vy * sinY + vx * cosY;
var ty:Number = vy * cosY - vx * sinY;
tree.dis = ty;
if (ty < 0) {
tree.visible = false;
} else {
tree.visible = true;
var StripCount:int = gridTotalHeight;
var mCamHeight:int = heightScale;
var d:int = -ty * (StripCount * 2 * mCamHeight) / (StripCount + 2 * mCamHeight * ty);
tree.x = tx * mCamHeight / StripCount * ((StripCount + d) * 2.2);
tree.y = d;
tree.scaleX = tree.scaleY = ((StripCount + d) * (mCamHeight) / 1) * .01;
tree.scaleX = tree.scaleY = tree.scaleX * .5;
}
}

//排序
private function sortZ():void {
trees.sortOn("dis", Array.DESCENDING | Array.NUMERIC);
for (var i:uint = 0; i < trees.length; i++) {
var tree:GameTree = trees[i];
objSpr.setChildIndex(tree, i);
}
}

//创建场景
private function create3DScene():void {
objGrids = new Object();
mapSpr = new Sprite();
objSpr = new Sprite();
mapSpr.y = gameHeight/2;
Screen.addChild(mapSpr);
objSpr.y = gameHeight;
objSpr.x = gameWidth / 2;
Screen.addChild(objSpr);
createGrids_();
cosRot = Math.cos(gameRotation * (Math.PI / 180));
sinRot = Math.sin(gameRotation * (Math.PI / 180));
this.addEventListener(Event.ENTER_FRAME, onEnterFrame);
Key.initialize(stage);
createObj();
}

private function gameEnterFrame():void {
if (Key.isDown(37)) ////lift
{
ro += .5;
if (ro > 3) ro = 4;
angleY = ( -ro / 180) * Math.PI;

if (lean < 4) lean+=.5;

} else if (Key.isDown(39)) ////right
{
ro -= .5;
if (ro < -3) ro = -4;
angleY = (ro / 180) * Math.PI;

if (lean > -4) lean-=.5;

} else {
if (ro > 0) {
ro -= .5;
} else if(ro < 0) {
ro += .5;
}
angleY = 0;
}

if (Math.abs(lean) < 0.1)
{
lean = 0;
} else {
lean *= 0.8;
}
Screen.rotation = lean;

if (Key.isDown(38) && speed <= 5) ////加速
{
speed += 0.3;
} else if (Key.isDown(40) && speed >= -2) /////减速
{
speed -= 0.15;
} else {
speed *= 0.94;
if (speed < 0) speed = 0;
}

/////sky
for (var j:int = 1; j <=3; j++)
{
m1Back["s" + j].x += j +ro * j;
if (m1Back["s" + j].x >= 0) m1Back["s" + j].x = -510;
if (m1Back["s" + j].x <= -1024) m1Back["s" + j].x = -514;
}

gameRotation += ro;
cosRot = Math.cos(gameRotation * (Math.PI / 180));
sinRot = Math.sin(gameRotation * (Math.PI / 180));

var friction:Number = .94;///

vy1 -= (friction * Math.cos(gameRotation*(Math.PI/180)))*speed/11;
vx1 += (friction * Math.sin(gameRotation * (Math.PI / 180))) * speed / 11;

if (Tree != null) Tree.zpos ++;

vx1 *= friction;
vy1 *= friction;
xPos += vy1;
yPos += vx1;

//////地图
pp.x = Math.abs(xPos * .1);
pp.y = Math.abs(yPos * .1);

////赛道碰撞检测
if (!map1Test.hitTestPoint(Math.abs(xPos), Math.abs(yPos), true)) {
speed *= 0.8;
if (speed < .01) speed = 0;

//////车震
var zheny:Number = Math.random() * speed * 2 - speed;
Screen.y = zheny * 3;
Screen.x = zheny;
}

for (var i:int = 1; i <= gridNum; i++ ) {
objGrids["m" + i].rotation = gameRotation-90;
objGrids["m" + i].m1.x = xPos;
objGrids["m" + i].m1.y = yPos;
}

objEnterFrame();
}

private function onEnterFrame(evt:Event):void {
gameEnterFrame();
}

private function createGrid_(mc:MovieClip, h:int):Mask {
var grid:Mask = new Mask();
mc.mask = grid;
return grid;
}

//生成格子
private function createGrids_():void {
var gridHeight:int = 0;
for (var i:int = 1; i <= gridNum; i++) {
var map:MapMc = new MapMc();
objGrids["m" + i] = map;
mapSpr.addChild(map);
map.x = gameWidth / 2;
map.y = gameHeight / 2;
map.scaleX = map.scaleY = (gridHeight/gridTotalHeight)*gridTotalHeight * heightScale*.01;
map.m1.x = yPos;
map.m1.y = xPos;
var grid:Mask = createGrid_(map, -gridHeight);
grid.y = gridHeight;
mapSpr.addChild(grid);
var scale1:Number = Math.pow(i/(gridTotalHeight/2.5), 1.5);
var height1:Number = Math.round(1 + (4 - 1) * scale1);
grid.height = height1;
gridHeight += height1;
}

</code>

第一视角游戏

来自很老的一个例子        源文件 z_mapping.fla