Flash prototype of a game like Balloon Invasion

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One of the latest successful games released last week was Balloon Invasion.

Balloon Invasion

It’s a mix between an artillery and a defense game, with a World War II theme.

I made a little prototype of the game, that will be explained another day. It’s nothing so interesting, just a mix between Create a flash artillery game and Managing multiple collision detection with Flash tutorials.

That’s the good point when you write a lot of code: the more you write, the more you can recycle.

The main difference however is the firing system: enemies don’t get hurt by bullets but mby explosions bullets make when they come to the spot you fired on… just like “real” artillery

Mouse.hide();
attachMovie("crosshair","crosshair",1);
attachMovie("tank","tank",2,{_x:450, _y:350});
fire_array = new Array();
fire_delay = 30;
just_fired = 0;
crosshair.onEnterFrame = function() {
	this._x = _xmouse;
	this._y = _ymouse;
};
tank.onEnterFrame = function() {
	mousex = _xmouse-this._x;
	mousey = (_ymouse-this._y)*-1;
	angle = Math.atan(mousey/mousex)/(Math.PI/180);
	if (mousex<0) {
		angle += 180;
	}
	if (mousex>=0 && mousey<0) {
		angle += 360;
	}
	if (angle>160) {
		angle = 160;
	}
	if (angle<20) {
		angle = 20;
	}
	firepower = Math.sqrt(mousex*mousex+mousey*mousey);
	if (firepower>200) {
		firepower = 200;
	}
	this.cannon._rotation = angle*-1;
};
function onMouseDown() {
	if (just_fired>fire_delay) {
		just_fired = 0;
		angle = tank.cannon._rotation;
		start_ball_x = tank._x+48*Math.cos(angle*Math.PI/180);
		start_ball_y = tank._y+48*Math.sin(angle*Math.PI/180);
		cannonball_fired = attachMovie("cannonball", "cannonball_"+_root.getNextHighestDepth(), _root.getNextHighestDepth(), {_x:start_ball_x, _y:start_ball_y});
		cannonball_fired.dirx = Math.cos(angle*Math.PI/180)*firepower;
		cannonball_fired.diry = Math.sin(angle*Math.PI/180)*firepower;
		cannonball_fired.fire_coord_x = _root._xmouse;
		cannonball_fired.fire_coord_y = _root._ymouse;
		cannonball_fired.onEnterFrame = function() {
			this._x += this.dirx/50;
			this._y += this.diry/50;
			dist_x = this._x-this.fire_coord_x;
			dist_y = this._y-this.fire_coord_y;
			dist = Math.sqrt(dist_x*dist_x+dist_y*dist_y);
			if (dist<20) {
				fire_array.push("explosion"+_root.getNextHighestDepth());
				exp = attachMovie("explosion", "explosion"+_root.getNextHighestDepth(), _root.getNextHighestDepth(), {_x:this._x, _y:this._y});
				exp.onEnterFrame = function() {
					this._width += 2;
					this._height += 2;
					this._alpha -= 2;
					if (this._alpha<0) {
						for (x in fire_array) {
							if (this.name == _root[fire_array[x]].name) {
								fire_array.splice(x,1);
							}
						}
						this.removeMovieClip();
					}
				};
				this.removeMovieClip();
			}
		};
	}
}
_root.onEnterFrame = function() {
	just_fired++;
	new_enemy = Math.random()*100;
	if (new_enemy<1) {
		enemy = attachMovie("enemy", "enemy"+_root.getNextHighestDepth(), _root.getNextHighestDepth(), {_x:-40, _y:Math.random()*200+50});
		enemy.speed = Math.random()*2+1;
		enemy.onEnterFrame = function() {
			this._x += this.speed;
			if (this._x>550) {
				this.removeMovieClip();
			}
			for (x in fire_array) {
				dist_x = this._x-_root[fire_array[x]]._x;
				dist_y = this._y-_root[fire_array[x]]._y;
				dist = Math.sqrt(dist_x*dist_x+dist_y*dist_y);
				if (dist<(this._width+_root[fire_array[x]]._width)/2) {
					this._alpha -= 5;
					if (this._alpha<0) {
						this.removeMovieClip();
					}
				}
			}

		};
	}
};

And here's the result:

Download the source code and start cloning the game :)

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215 GAME PROTOTYPES EXPLAINED WITH SOURCE CODE
// 1+2=3
// 100 rounds
// 10000000
// 2 Cars
// 2048
// A Blocky Christmas
// A Jumping Block
// A Life of Logic
// Angry Birds
// Angry Birds Space
// Artillery
// Astro-PANIC!
// Avoider
// Back to Square One
// Ball Game
// Ball vs Ball
// Ball: Revamped
// Balloon Invasion
// BallPusher
// Ballz
// Bar Balance
// Bejeweled
// Biggification
// Block it
// Blockage
// Bloons
// Boids
// Bombuzal
// Boom Dots
// Bouncing Ball
// Bouncing Ball 2
// Bouncy Light
// BoxHead
// Breakout
// Bricks
// Bubble Chaos
// Bubbles 2
// Card Game
// Castle Ramble
// Chronotron
// Circle Chain
// Circle Path
// Circle Race
// Circular endless runner
// Cirplosion
// CLOCKS - The Game
// Color Hit
// Color Jump
// ColorFill
// Columns
// Concentration
// Crossy Road
// Crush the Castle
// Cube Jump
// CubesOut
// Dash N Blast
// Dashy Panda
// Deflection
// Diamond Digger Saga
// Don't touch the spikes
// Dots
// Down The Mountain
// Drag and Match
// Draw Game
// Drop Wizard
// DROP'd
// Dudeski
// Dungeon Raid
// Educational Game
// Elasticity
// Endless Runner
// Erase Box
// Eskiv
// Farm Heroes Saga
// Filler
// Flappy Bird
// Fling
// Flipping Legend
// Floaty Light
// Fuse Ballz
// GearTaker
// Gem Sweeper
// Globe
// Goat Rider
// Gold Miner
// Grindstone
// GuessNext
// Helicopter
// Hero Emblems
// Hero Slide
// Hexagonal Tiles
// HookPod
// Hop Hop Hop Underwater
// Horizontal Endless Runner
// Hundreds
// Hungry Hero
// Hurry it's Christmas
// InkTd
// Iromeku
// Jet Set Willy
// Jigsaw Game
// Knife Hit
// Knightfall
// Legends of Runeterra
// Lep's World
// Line Rider
// Lumines
// Magick
// MagOrMin
// Mass Attack
// Math Game
// Maze
// Meeblings
// Memdot
// Metro Siberia Underground
// Mike Dangers
// Mikey Hooks
// Nano War
// Nodes
// o:anquan
// One Button Game
// One Tap RPG
// Ononmin
// Pacco
// Perfect Square!
// Perfectionism
// Phyballs
// Pixel Purge
// PixelField
// Planet Revenge
// Plants Vs Zombies
// Platform
// Platform game
// Plus+Plus
// Pocket Snap
// Poker
// Pool
// Pop the Lock
// Pop to Save
// Poux
// Pudi
// Pumpkin Story
// Puppet Bird
// Pyramids of Ra
// qomp
// Quick Switch
// Racing
// Radical
// Rebuild Chile
// Renju
// Rise Above
// Risky Road
// Roguelike
// Roly Poly
// Run Around
// Rush Hour
// SameGame
// SamePhysics
// Save the Totem
// Security
// Serious Scramblers
// Shrink it
// Sling
// Slingy
// Snowflakes
// Sokoban
// Space Checkers
// Space is Key
// Spellfall
// Spinny Gun
// Splitter
// Spring Ninja
// Sproing
// Stabilize!
// Stack
// Stairs
// Stick Hero
// String Avoider
// Stringy
// Sudoku
// Super Mario Bros
// Surfingers
// Survival Horror
// Talesworth Adventure
// Tetris
// The Impossible Line
// The Moops - Combos of Joy
// The Next Arrow
// Threes
// Tic Tac Toe
// Timberman
// Tiny Wings
// Tipsy Tower
// Toony
// Totem Destroyer
// Tower Defense
// Trick Shot
// Tunnelball
// Turn
// Turnellio
// TwinSpin
// vvvvvv
// Warp Shift
// Way of an Idea
// Whack a Creep
// Wheel of Fortune
// Where's my Water
// Wish Upon a Star
// Word Game
// Wordle
// Worms
// Yanga
// Yeah Bunny
// Zhed
// zNumbers