Here is my latest experiment BattleTanks! :player:
Its a simple tank game, done entirely in AS (and compiled using this online compiler cause I don’t have Flash at work). It incorporates a number of AI elements including line of sight calculation and basic obstacle avoidance. The AI is pretty stupid and I’m going to improve on them as soon as I optimize the code some. But enjoy and it was fun to build.
Arrows to move A/D to rotate turrent and S/Space to fire
Source:
class BattleTanks {
var tanks;
var map;
var count;
var max_speed;
var friction;
var braking;
var accel;
var turnspeed;
var bounce_factor;
var tankscale;
var num_enemies;
var bullet_speed;
var damage;
var explosions;
var num_particles;
function BattleTanks(path) {
//define global variable
defineGlobals(path);
//generate map
//map = genMap(40, 40, 25);
map = [ [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1],
[1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] ];
//draw map
drawMap(map, path);
//create tanks
tanks.push(newTank(path, true, map, 3, 3, 90));
tanks.push(newTank(path, false, map, 37, 3, 180));
tanks.push(newTank(path, false, map, 37, 37, -90));
tanks.push(newTank(path, false, map, 3, 37, 0));
}
function newTank(target, player, map, x, y, rotate) {
var ob;
var ref = this;
var tank = target.createEmptyMovieClip("tank"+(count++), count);
//draw the tank graphics
drawTank(tank);
createTurret(tank);
//set position and define basic variable
tank.sx = x;
tank.sy = y;
tank.sr = rotate;
tank.player = player;
tank._alpha = 0;
tank.alive = false;
tank.die = function() {
if (this.alive) {
ref.explode(this);
}
this.alive = false;
this.onEnterFrame = function() {
if (this._alpha>0) {
this._alpha -= 7;
} else {
this._x = this.sx*10;
this._y = this.sy*10;
this._rotation = this.sr;
this.turret._rotation = 0;
this.vel = 0;
ref.calculateTreads(tank);
//apply key controls if tank is player controlled
if (player) {
tank.shot = false;
tank.onEnterFrame = function() {
if (this._alpha<100) {
this._alpha += 5;
} else {
this.alive = true;
}
ref.calculateTreads(this);
ref.drawTreads(this);
this.vel *= ref.friction;
//get rid of errors caused by decimal anomalies
this.vel = Math.floor(this.vel*10)/10;
if (Key.isDown(Key.UP)) {
//acceleration style 2
this.vel = Math.min(ref.max_speed, this.vel+ref.accel);
}
if (Key.isDown(Key.DOWN)) {
//acceleration style 2
this.vel = Math.max(-ref.max_speed, this.vel-ref.accel);
}
if (Key.isDown(Key.LEFT)) {
this._rotation -= ref.turnspeed;
}
if (Key.isDown(Key.RIGHT)) {
this._rotation += ref.turnspeed;
}
//turret rotation
if (Key.isDown(65)) {
this.turret._rotation += ref.turnspeed;
}
if (Key.isDown(68)) {
this.turret._rotation -= ref.turnspeed;
}
//shooting
if (Key.isDown(Key.SPACE) || Key.isDown(83)) {
if (this.shot == false) {
this.shoot();
this.shot = true;
}
} else {
this.shot = false;
}
//movement calculations
var xmov = Math.cos(this._rotation*(Math.PI/180))*this.vel;
var ymov = Math.sin(this._rotation*(Math.PI/180))*this.vel;
//wall collision
ob = new Object();
ob.clip = this;
ob.height = this.body._height/2;
ob.width = this.body._width/2;
ob.x = this._x;
ob.y = this._y;
ob.xtile = Math.floor(this._x/10);
ob.ytile = Math.floor(this._y/10);
//movement
ref.getCorners(this._x, this._y+ymov, ob);
if (ymov<0) {
if (ob.upleft && ob.upright) {
ob.y += ymov;
} else {
ob.y = ob.ytile*10+ob.height;
}
}
if (ymov>0) {
if (ob.downleft && ob.downright) {
ob.y += ymov;
} else {
ob.y = (ob.ytile+1)*10-ob.height;
}
}
ref.getCorners(this._x+xmov, this._y, ob);
if (xmov<0) {
if (ob.upleft && ob.downleft) {
ob.x += xmov;
} else {
ob.x = ob.xtile*10+ob.width;
}
} else if (xmov>0) {
if (ob.upright && ob.downright) {
ob.x += xmov;
} else {
ob.x = (ob.xtile+1)*10-ob.width;
}
}
this._x = ob.x;
this._y = ob.y;
}
;
} else {
this.count = Math.floor(Math.random()*15);
this.shoot_count = 0;
this.los = -1;
this.decel = 0;
this.mov_angle = this._rotation;
this.onEnterFrame = function() {
var xdist, ydist, dist, angle, xam, yam, ca, sa, tx, ty, dif, rot;
if (this._alpha<100) {
this._alpha += 5;
} else {
this.alive = true;
}
this.count++;
if(this.count > 2999) {
this.count = 0;
}
//draw tread marks
ref.calculateTreads(this);
ref.drawTreads(this);
//calculate current position
this.scx = Math.floor(this._x/10);
this.scy = Math.floor(this._y/10);
ca = Math.cos(this._rotation*(Math.PI/180));
sa = Math.sin(this._rotation*(Math.PI/180));
//
//rotate turret if line of site
//
if (ref.tanks[this.los].alive == false) {
this.los = -1;
} else {
this.olos = this.los;
}
if (this.los>-1 && this.count % 15 == 0) {
//calculate line of sight
xdist = Math.floor(this._x/10)-Math.floor(ref.tanks[this.los]._x/10);
ydist = Math.floor(this._y/10)-Math.floor(ref.tanks[this.los]._y/10);
dist = Math.sqrt(xdist*xdist+ydist*ydist);
angle = Math.atan2(-ydist, -xdist);
xam = Math.cos(angle)*10;
yam = Math.sin(angle)*10;
this.los_angle = angle*(180/Math.PI);
x = this._x;
y = this._y;
for (var i = 0; i<dist; i++) {
x += xam;
y += yam;
if (ref.map[Math.floor(y/10)][Math.floor(x/10)] == 1) {
this.los = -1;
break;
}
}
}
if (this.los == -1 && this.count % 15 == 0) {
for (var k = 0; k<ref.tanks.length; k++) {
if (k != this.olos && ref.tanks[k] != this) {
//calculate line of sight
xdist = Math.floor(this._x/10)-Math.floor(ref.tanks[k]._x/10);
ydist = Math.floor(this._y/10)-Math.floor(ref.tanks[k]._y/10);
dist = Math.sqrt(xdist*xdist+ydist*ydist);
angle = Math.atan2(-ydist, -xdist);
xam = Math.cos(angle)*10;
yam = Math.sin(angle)*10;
this.los_angle = angle*(180/Math.PI);
x = this._x;
y = this._y;
this.los = k;
for (var i = 0; i<dist; i++) {
x += xam;
y += yam;
if (ref.map[Math.floor(y/10)][Math.floor(x/10)] == 1) {
this.los = -1;
break;
}
}
if (this.los != -1) {
break;
}
}
}
}
if (this.los == -1) {
this.los_angle = this._rotation;
this.shoot_count = 0;
}
dif = Math.abs(this.turret._rotation+this._rotation-this.los_angle);
if (dif>3) {
rot = (this.turret._rotation+this._rotation);
if (this.los_angle<0) {
this.los_angle += 360;
} else if (this.los_angle>360) {
this.los_angle -= 360;
}
if (rot<0) {
rot += 360;
} else if (rot>360) {
rot -= 360;
}
dif = this.los_angle-rot;
if (dif>0) {
if (dif>ref.turnspeed) {
this.turret._rotation += ref.turnspeed;
} else {
this.turret._rotation += dif+Math.random()*3-1.5;
}
} else {
dif *= -1;
if (dif>ref.turnspeed) {
this.turret._rotation -= ref.turnspeed;
} else {
this.turret._rotation -= dif+Math.random()*3-1.5;
}
}
if(this.turret._rotation < 0) {
this.turret._rotation += 360;
} else if(this.turret._rotation > 360) {
this.turret._rotation -= 360;
}
}
this.shoot_count++;
if (dif<15 && this.shoot_count % 5 == 0 && ref.tanks[this.los].alive == true) {
this.shoot();
}
//
//follow random path
//
if (this.los>-1) {
tx = ref.tanks[this.los]._x;
ty = ref.tanks[this.los]._y;
angle = Math.atan2(ty-this._y, tx-this._x)*(180/Math.PI);
dif = angle-this._rotation;
if (dif>180) {
this.reverseAngle();
this.mov_angle = angle-180;
} else {
this.mov_angle = angle;
}
} else {
this.mov_angle += Math.random()*22-11;
}
if (Math.abs(this._rotation-this.mov_angle)>1) {
rot = this._rotation;
if (this.mov_angle<0) {
this.mov_angle += 360;
} else if (this.mov_angle>360) {
this.mov_angle -= 360;
}
if (rot<0) {
rot += 360;
} else if (rot>360) {
rot -= 360;
}
dif = this.mov_angle-rot;
if (dif>0) {
if (dif>ref.turnspeed) {
this._rotation += ref.turnspeed;
} else {
this._rotation += dif;
}
} else {
dif *= -1;
if (dif>ref.turnspeed) {
this._rotation -= ref.turnspeed;
} else {
this._rotation -= dif;
}
}
if(this._rotation < 0) {
this._rotation += 360;
} else if(this._rotation > 360) {
this._rotation -= 360;
}
}
//obstacle avoidance
x = this.rtx;
y = this.rty;
this.rcol = 0;
this.lcol = 0;
for (var k = 8; k>0; k--) {
x += ca*4;
y += sa*4;
if (ref.map[Math.floor(y/10)][Math.floor(x/10)] == 1) {
this.rcol = k;
break;
}
}
x = this.ltx;
y = this.lty;
for (var k = 8; k>0; k--) {
x += ca*3;
y += sa*3;
if (ref.map[Math.floor(y/10)][Math.floor(x/10)] == 1) {
this.lcol = k;
break;
}
}
if(this.rcol > 0 && this.lcol > 0) {
if(this.col_count++ > 40) {
this.reverseDirection();
this.col_count = 0;
}
} else {
this.decel = 0;
this.col_count = 0;
}
if (this.rcol>0) {
this._rotation += ref.turnspeed*this.rcol*1.4;
this.mov_angle = this._rotation;
this.decel += .1;
}
if (this.lcol>0) {
this._rotation -= ref.turnspeed*this.lcol*1.4;
this.mov_angle = this._rotation;
this.decel += .1;
}
this.vel = Math.min(ref.max_speed, this.vel+ref.accel+this.decel);
//
//rotation/movement
//
//movement
//movement calculations
this.vel *= ref.friction;
this.vel = Math.floor(this.vel*10)/10;
var xmov = ca*this.vel;
var ymov = sa*this.vel;
//wall collision
ob = new Object();
ob.clip = this;
ob.height = this.body._height/2;
ob.width = this.body._width/2;
ob.x = this._x;
ob.y = this._y;
ob.xtile = Math.floor(this._x/10);
ob.ytile = Math.floor(this._y/10);
//movement
ref.getCorners(this._x, this._y+ymov, ob);
if (ymov<0) {
if (ob.upleft && ob.upright) {
ob.y += ymov;
} else {
ob.y = ob.ytile*10+ob.height+1;
this.collide();
}
}
if (ymov>0) {
if (ob.downleft && ob.downright) {
ob.y += ymov;
} else {
ob.y = (ob.ytile+1)*10-ob.height-1;
this.collide();
}
}
ref.getCorners(this._x+xmov, this._y, ob);
if (xmov<0) {
if (ob.upleft && ob.downleft) {
ob.x += xmov;
} else {
ob.x = ob.xtile*10+ob.width+1;
this.collide();
}
} else if (xmov>0) {
if (ob.upright && ob.downright) {
ob.x += xmov;
} else {
ob.x = (ob.xtile+1)*10-ob.width-1;
this.collide();
}
}
this._x = ob.x;
this._y = ob.y;
}
;
tank.collide = function() {
//this.reverseDirection();
}
;
tank.reverseDirection = function() {
this._rotation += 180;
this.turret._rotation += 180;
this.mov_angle += 180+Math.random()*90-45;
ref.calculateTreads(this);
}
;
}
tank.shoot = function() {
var bullet = this._parent.createEmptyMovieClip("bullet"+(ref.count++), ref.count);
ref.elevateTankDepth();
var angle = this.turret._rotation+this._rotation;
var ca = Math.cos(angle*(Math.PI/180));
var sa = Math.sin(angle*(Math.PI/180));
bullet._x = ca*9+this._x;
bullet._y = sa*9+this._y;
bullet.xspeed = ca*ref.bullet_speed;
bullet.yspeed = sa*ref.bullet_speed;
bullet._rotation = angle;
bullet.parent = this;
ref.drawBox(bullet, 1, 1, 0, 0, 0x000000);
bullet.onEnterFrame = function() {
this._x += this.xspeed;
this._y += this.yspeed;
if (ref.map[Math.floor(this._y/10)][Math.floor(this._x/10)] == 1 || this._x>400 || this._x<0 || this._y>400 || this._y<0) {
this.removeMovieClip();
} else {
for (var i in ref.tanks) {
if (ref.tanks*.hitTest(this) && ref.tanks* != this.parent && ref.tanks*.alive) {
ref.tanks*.die();
this.removeMovieClip();
}
}
}
}
;
}
;
}
}
;
}
;
tank.die();
return tank;
}
function isOpen(x, y) {
var open = true;
if (map[y][x+1] != 0 || map[y+1][x] != 0 || map[y+1][x+1] != 0) {
open = false;
}
return open;
}
function calcTDist(ob, x, y) {
return Math.abs(ob.x-x)+Math.abs(ob.y-y);
}
function inArrayXY(arr, x, y) {
for (var i in arr) {
if (arr*.x == x && arr*.y == y) {
return i;
}
}
return -1;
}
function elevateTankDepth() {
for (var i = 0; i<tanks.length; i++) {
tanks*.swapDepths(count-(i+1));
}
}
function drawTreads(tank) {
var tread = tank._parent.createEmptyMovieClip("tread"+(count++), count);
elevateTankDepth();
tread.lineStyle(0, 0x000000, 100);
tread._alpha = 30;
tread.moveTo(tank.ortx, tank.orty);
tread.lineTo(tank.rtx, tank.rty);
tread.moveTo(tank.oltx, tank.olty);
tread.lineTo(tank.ltx, tank.lty);
tread.onEnterFrame = function() {
this._alpha -= .15;
if (this._alpha<3) {
this.removeMovieClip();
}
}
;
}
function calculateTreads(tank) {
tank.ortx = tank.rtx;
tank.orty = tank.rty;
tank.oltx = tank.ltx;
tank.olty = tank.lty;
tank.rtx = Math.cos((tank._rotation-90)*(Math.PI/180))*(3*tankscale)+tank._x;
tank.rty = Math.sin((tank._rotation-90)*(Math.PI/180))*(3*tankscale)+tank._y;
tank.ltx = Math.cos((tank._rotation-90)*(Math.PI/180))*(-3*tankscale)+tank._x;
tank.lty = Math.sin((tank._rotation-90)*(Math.PI/180))*(-3*tankscale)+tank._y;
}
function getCorners(x, y, ob) {
//var bounds = ob.clip.getBounds();
ob.downY = Math.floor((y+ob.height-1)/10);
ob.upY = Math.floor((y-ob.height)/10);
ob.leftX = Math.floor((x-ob.width)/10);
ob.rightX = Math.floor((x+ob.width-1)/10);
//check if they are walls
ob.upleft = (map[ob.upY][ob.leftX] == 0);
ob.downleft = (map[ob.downY][ob.leftX] == 0);
ob.upright = (map[ob.upY][ob.rightX] == 0);
ob.downright = (map[ob.downY][ob.rightX] == 0);
}
function drawTank(tank) {
var target = tank.createEmptyMovieClip("body", 1);
target._xscale = target._yscale=100*tankscale;
target._x = -(5*tankscale);
target._y = -(4.5*tankscale);
target.lineStyle(1, 0x000000, 100);
target.moveTo(1, 0);
target.lineTo(9, 0);
target.moveTo(0, 1);
target.lineTo(10, 1);
target.moveTo(1, 2);
target.lineTo(1, 7);
target.moveTo(9, 2);
target.lineTo(9, 7);
target.moveTo(0, 8);
target.lineTo(10, 8);
target.moveTo(1, 9);
target.lineTo(9, 9);
target.lineStyle(1, 0xFFFFFF, 100);
for (var i = 2; i<9; i++) {
target.moveTo(i, 2);
target.lineTo(i, 7);
}
}
function createTurret(tank) {
var turret = tank.createEmptyMovieClip("turret", 2);
var target = turret.createEmptyMovieClip("graphics", 1);
var shot_exit = target.createEmptyMovieClip("shot_exit", 1);
shot_exit._x = 9;
shot_exit._y = 2;
target._xscale = target._yscale=100*tankscale;
target._x = -(1.5*tankscale);
target._y = -(2*tankscale);
target.lineStyle(1, 0x000000, 100);
target.moveTo(0, 1);
target.lineTo(0, 3);
target.moveTo(1, 0);
target.lineTo(2, 0);
target.moveTo(3, 1);
target.lineTo(3, 3);
target.moveTo(1, 4);
target.lineTo(2, 4);
target.moveTo(3, 2);
target.lineTo(9, 2);
}
function explode(tank) {
if (explosions) {
var expl = tank._parent.createEmptyMovieClip("explode"+(count++), count);
var part;
var ref = this;
var i;
part = expl.createEmptyMovieClip("outline", 0);
part._x = tank._x;
part._y = tank._y;
part.lineStyle(0, 0x000000, 50);
part.moveTo(10, 0);
for (i = 0;i<=7;i++) {
part.curveTo(0, 0, Math.cos(i*0.89)*10, Math.sin(i*0.89)*10);
}
part.onEnterFrame = function() {
this._alpha -= 2;
if(this._alpha <= 0) {
this._parent.removeMovieClip();
}
}
for (i = 1; i<num_particles; i++) {
part = expl.createEmptyMovieClip("particle"+i, i);
var angle = Math.random()*2*Math.PI;
var ca = Math.cos(angle);
var sa = Math.sin(angle);
part._x = tank._x;
part._y = tank._y;
var vel = Math.random()*3-1.5;
part.xspeed = ca*vel;
part.yspeed = sa*vel;
part._rotation = angle;
part.parent = this;
ref.drawBox(part, 1, 1, 0, 0, 0x000000);
part.onEnterFrame = function() {
this._x += this.xspeed;
this._y += this.yspeed;
this._alpha -= 7;
if (this._alpha<0) {
this.removeMovieClip();
}
}
;
}
}
}
function drawBox(target, xdim, ydim, x, y, col) {
target.lineStyle(undefined);
target.beginFill(col);
target.moveTo(x, y);
target.lineTo(x+xdim, y);
target.lineTo(x+xdim, y+ydim);
target.lineTo(x, y+ydim);
target.endFill();
}
function drawMap(map, target) {
for (var y = 0; y<map.length; y++) {
for (var x = 0; x<map[y].length; x++) {
if (map[y][x] == 1) {
drawBox(target, 10, 10, x*10, y*10, 0x000000);
}
}
}
}
function genMap(xdim, ydim, num) {
var xlength, ylength, xpos, ypos, arr;
var map_arr = new Array();
//generate empty map
for (var x = 0; x<xdim; x++) {
arr = new Array();
for (var y = 0; y<ydim; y++) {
arr.push(0);
}
map_arr.push(arr);
}
//generate blocks
for (var i = 0; i<num; i++) {
xlength = Math.round(Math.random()*5);
ylength = Math.round(Math.random()*5);
xpos = Math.round(Math.random()*xdim);
ypos = Math.round(Math.random()*ydim);
for (var x = 0; x<xlength; x++) {
for (var y = 0; y<ylength; y++) {
map_arr[y+ypos][x+xpos] = 1;
}
}
}
return map_arr;
}
function defineGlobals(path) {
count = 2;
tanks = new Array();
max_speed = 2;
friction = .8;
accel = .8;
turnspeed = 5;
bounce_factor = -0.7;
tankscale = 1;
num_enemies = 5;
bullet_speed = 6;
damage = 10;
explosions = true;
num_particles = 80;
}
public static function main () {
var b = new BattleTanks(_root);
}
}
