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game.js
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game.js
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/*
Bounce Back ~ A boomerang roguelike for JS13k
Copyright (C) 2019 Frank Force
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
/*
Bounce Back Javascript Game
By Frank Force 2019
Game Features
- Boomerang physics & dash ability
- Procedural level generation
- 3 Enemy types
- 7 types of pickups
- Giant and invisible enemy variants
- Final boss battle
- Saves gems earned and max level reached
- Shop system for buying items
- Minimap
- Footsteps, blood, and persistant effects system
- 16 Different sound effects with zzfx
- Procedurally generated music
- Speed run mode doesn't effect normal save
- Low health warning system
- Level transition effect
*/
"use strict"; // strict mode
///////////////////////////////////////////////////////////////////////////////
// debug config
//godMode=1;
//debug=1;
//debugCanvas=1;
//debugCollision=1;
//soundEnable=0;
///////////////////////////////////////////////////////////////////////////////
// init
let startLevel=0;
let level;
let levelNumber;
let nextLevel;
let warpLevel=0;
let isFinalLevel;
let isStartLevel;
let levelTimer = new Timer();
let endLevelTimer = new Timer();
let levelExit;
let loadNextLevel;
let levelMaze = [];
let levelMazeSize = 4;
let levelColor = new Color();
let levelFrame;
let boss;
let player;
let playerData;
let playerStartPos;
let winTimer = new Timer();
let healthWarning = new Timer();
let buyTimer = new Timer();
let mainCanvas = c1;
let speedRunMode;
let speedRunTime=0;
let speedRunBestTime=0;
let coinSoundTimer = new Timer();
class PlayerData
{
// track player data between levels (when player is destroyed)
constructor()
{
this.health = 3;
this.healthMax = 3;
this.boomerangs = 1;
this.bigBoomerangs = 0;
this.coins = 0;
}
}
function Init()
{
EngineInit();
// clear canvas to black so transition starts on a black screen
mainCanvasContext.fillRect(0,0,mainCanvasSize.x, mainCanvasSize.y);
Reset();
NextLevel();
EngineUpdate();
}
function Reset()
{
// load local storage
playerData = new PlayerData();
if (localStorage.kbap_coins)
playerData.coins = parseInt(localStorage.kbap_coins, 10);
if (localStorage.kbap_warp)
warpLevel = parseInt(localStorage.kbap_warp, 10);
if (localStorage.kbap_bestTime)
speedRunBestTime = parseInt(localStorage.kbap_bestTime, 10);
nextLevel = startLevel;
}
function NextLevel()
{
// go to next level
levelFrame = 0;
levelNumber = nextLevel;
nextLevel = (nextLevel+1)%11;
// track highest level reached
if (!speedRunMode && levelNumber>warpLevel)
warpLevel = levelNumber;
localStorage.kbap_warp = warpLevel;
// check if is special level
isFinalLevel = levelNumber==10;
isStartLevel = !levelNumber;
if (isStartLevel)
speedRunMode = 0; // reset speed run on start level
InitLevel();
}
function InitLevel()
{
// reset level stuff
levelTimer.Set();
winTimer.UnSet();
endLevelTimer.UnSet();
cameraScale=2;
levelExit = 0;
boss = 0;
// clear everything
StartTransiton();
ClearGameObjects();
// prevent player being stuck with no boomerangs
if (!playerData.boomerangs && !playerData.bigBoomerangs)
playerData.boomerangs=1;
// create the level and player
GenerateLevel();
player = new Player(playerStartPos);
// spawn debug objects
//new Pickup(new Vector2(13,10),0);
//new SlimeEnemy(new Vector2(8,10),3);
//new JumpingEnemy(new Vector2(10,10));
//new ShieldEnemy(new Vector2(12,10));
//SpawnPickups(playerStartPos.Clone().AddXY(3,-6),1,100);
}
function SpawnPickups(pos, chance=1, count=1)
{
// random chance to not drop
if (Rand()>chance)
return;
for(let i=0;i<count;++i)
{
let p = new Pickup(pos.Clone(),
RandInt(8)? // coin or heart?
(RandInt(20)?3:4): // small or big coin?
(RandInt(4)?0:1) // half or whole heart?
);
// add extra velocity to sucessive spawns when dropping multiple
if (count>1)
p.velocity = RandVector(.1 + Clamp(i,3,30)*.03*Rand());
}
}
// collide with level object if one exists and return if bounced
function DestroyLevelObject(pos,bounceRock=1)
{
// is something solid there?
let data = level.GetDataFromPos(pos);
if (!data.IsSolid())
return 0;
// did it hit an object?
let bounce = 1;
let type = data.object;
if (type==1 || type==2)
{
// clear out the tile
level.GetDataFromPos(pos).object = 0;
level.DrawTileData(pos.x,pos.y);
// small chance of dropping a pickup
SpawnPickups(pos, .05);
if (type==1)
{
// bush
PlaySound(5);
level.DrawEllipse(pos,RandBetween(.1,.15),RGBA(0,0,0,RandBetween(.3,.6)));
bounce=0;
}
else
{
// rock
PlaySound(14);
for(let i=9;i--;)
level.DrawEllipse(pos.Clone().Add(RandVector(.2)),RandBetween(.1,.2),RGBA(.2,.1,.05,RandBetween(.3,.6)));
bounce = bounceRock;
}
// particle effects
new ParticleEmitter
(
pos, .5, .1, // pos, emitter size, particle size
type==1 ? new Color(.4,.8,.1,1) : new Color(.4,.2,.1,1),
type==1 ? new Color(0,.1,0,1) : new Color(0,0,0,1)
);
}
return bounce;
}
///////////////////////////////////////////////////////////////////////////////
// update/render
function Update()
{
++levelFrame;
UpdateAudio();
// save data
if (!speedRunMode)
localStorage.kbap_coins = playerData.coins;
// update speed run time
if (!paused && !winTimer.IsSet() && !player.IsDead())
speedRunTime += timeDelta;
// restart if dead or won
if ((player.IsDead() || winTimer.IsSet()) && KeyWasPressed(27))
loadNextLevel = 2;
// load next level when ready
if (endLevelTimer.IsSet() && endLevelTimer.Elapsed())
loadNextLevel = 1;
// debug key N to load next level
if (debug && KeyWasPressed(78))
loadNextLevel = 1;
// zoom out on final level
if (isFinalLevel)
cameraScale = Max(cameraScale-.001,1);
if (isStartLevel)
{
// title screen
let pos = new Vector2(8,3.7);
let t = levelTimer.Get();
let p = Percent(t,0,3.3)
let b = Math.abs(3-4*p)/1.7;
let c1 =`hsla(${t*99},99%,50%)`;
level.DrawText('BOUNCE', pos.Clone().AddXY(0,-b), 33*p,'center',2,'#000',c1);
level.DrawText('BACK', pos.Clone().AddXY(0,b+1.2), 33*p,'center',2,'#000',c1);
if (levelFrame==200)
level.DrawText('A JS13k 2019 Game', new Vector2(8,9.5), 14);
if (levelFrame==260)
level.DrawText('By Frank Force', new Vector2(8,10.5), 14);
}
}
function PreRender()
{
// camera is always centered on player
cameraPos.Copy(player.pos);
// clear canvas to level color
mainCanvasContext.fillStyle=levelColor.RGBA();
mainCanvasContext.fillRect(0,0,mainCanvasSize.x, mainCanvasSize.y);
if (isStartLevel)
{
// background starfield in start level
mainCanvasContext.fillStyle='#999';
for(let i=2e3;i--;)
mainCanvasContext.fillRect((Math.sin(i)*1e9-time*(i+1e3)/50)%(mainCanvas.width+9)-9,i*9%mainCanvas.height,i%7,i%7);
}
// draw the level (bottom layer)
level.Render();
}
function PostRender()
{
if (loadNextLevel)
{
// hook to load next level is here so transition effects work!
if (loadNextLevel==2)
Reset();
loadNextLevel = 0;
NextLevel();
}
UpdateTransiton();
// centered hud text
let bigText = '';
if (paused)
bigText = '-paused-'
if (winTimer.IsSet())
bigText = 'You Win!';
if (player.IsDead())
{
bigText = 'Game Over!'
DrawText('Press Escape',mainCanvasSize.x/2, mainCanvasSize.y/2+80, 42);
}
DrawText(bigText,mainCanvasSize.x/2, mainCanvasSize.y/2-80, 72, 'center', 2);
{
// hud
let iconSize = 16;
let y = iconSize;
for(let i=0;i<player.healthMax;i++)
{
let t = 1;
let s = iconSize;
if (healthWarning.Get() < .5)
s *= 1+Math.sin(2*PI*healthWarning.Get()/.5)*.2;
if (player.health > i)
t = player.health-i>=1?3:2;
DrawScreenTile(iconSize+2*iconSize*i,y,s,t,5);
}
y += 2*iconSize;
//if (playerData.boomerangs)
{
DrawScreenTile(iconSize,y,iconSize,0,5);
DrawText(playerData.boomerangs, 34, y+2, 32, 'left');
}
if (playerData.bigBoomerangs)
{
DrawScreenTile(iconSize+60,y,iconSize,7,5);
DrawText(playerData.bigBoomerangs, 34+60, y+2, 32, 'left');
}
//if (playerData.coins)
{
y += 2*iconSize;
DrawScreenTile(iconSize,5*iconSize,iconSize,5,5);
DrawText(playerData.coins, 34, y+2, 32, 'left');
}
if (speedRunMode)
{
// show time if speed run mode is activated
let c = (player.IsDead() || winTimer.IsSet())? '#F00' : '#000';
DrawText(FormatTime(speedRunTime), mainCanvas.width/2, 28, 40, 'center',1,c);
}
RenderMap();
}
// mouse cursor
mainCanvas.style.cursor='none';
let mx = mousePos.x|0;
let my = mousePos.y|0;
let mw = 2;
let mh = 15;
mainCanvasContext.globalCompositeOperation = 'difference';
mainCanvasContext.fillStyle='#FFF'
mainCanvasContext.fillRect(mx-mw,my-mh,mw*2,mh*2);
mainCanvasContext.fillRect(mx-mh,my-mw,mh*2,mw*2);
mainCanvasContext.globalCompositeOperation = 'source-over';
}
function MazeDataPos(pos)
{
// get the index into the maze array
let cellRatio = levelMazeSize / levelSize;
pos = pos.Clone(cellRatio);
return (pos.x|0) + (pos.y|0) * levelMazeSize;
}
function RenderMap()
{
if ((isStartLevel || isFinalLevel) && !debug)
return;
let iconSize = 16;
let y = iconSize;
let w = 24;
let o = mainCanvasSize.x-levelMazeSize*w-10;
// show level number
y += 2*iconSize;
if (!isStartLevel)
DrawText('L-'+ levelNumber, o-10, 24, 32,'right');
// mark room player is in as visited
if (levelMaze[MazeDataPos(player.pos)])
levelMaze[MazeDataPos(player.pos)] = -1;
let cellWidth = levelSize / levelMazeSize;
let playerMazeX = player.pos.x / cellWidth | 0;
let playerMazeY = player.pos.y / cellWidth | 0;
// render minimap
mainCanvasContext.strokeStyle='#000';
mainCanvasContext.lineWidth=2;
mainCanvasContext.strokeRect(o,10,w*levelMazeSize,w*levelMazeSize);
for(let y=levelMazeSize;y--;)
for(let x=levelMazeSize;x--;)
{
let m = levelMaze[x+y*levelMazeSize];
let c = '#0004'; // unexplored invalid
if (m>0)
c = '#333'; // unexplored valid
if (m==-1)
c = '#FFF'; // explored
if (x == playerMazeX && y == playerMazeY)
c = '#F00'; // player location
mainCanvasContext.fillStyle=c;
mainCanvasContext.fillRect(o+x*w,10+y*w,w,w);
if (m)
mainCanvasContext.strokeRect(o+x*w,10+y*w,w,w);
}
// draw the objects on the minimap
gameObjects.forEach(object=>
{
let r = object.radarSize;
if (r && levelMaze[MazeDataPos(object.pos)]<0)
{
let p = object.pos.Clone(w/cellWidth).AddXY(o,10).Round();
mainCanvasContext.fillStyle=object==player?'#FFF':'#000';
mainCanvasContext.fillRect(p.x-r-1,p.y-r-1,2*r+2,2*r+2);
mainCanvasContext.fillStyle=object==player?'#000':object.isEnemy?'#F00':'#FFF';
mainCanvasContext.fillRect(p.x-r,p.y-r,2*r,2*r);
}
});
}
///////////////////////////////////////////////////////////////////////////////
// game objects
class MyGameObject extends GameObject
{
constructor(pos,tileX=0,tileY=0,size=.5,collisionSize=0,health=1)
{
super(pos,tileX,tileY,size,collisionSize,health);
this.walkFrame=0;
this.rotation=1;
this.radarSize=1;
this.isInvisible = 0;
this.bloodColor = new Color(.8,0,.05,.5);
this.bloodAdditive = 0;
}
UpdateWalk()
{
// footprints
let lastWalkFrame = this.walkFrame;
this.walkFrame += 1.5*this.velocity.Length();
if (lastWalkFrame%2 < 1 && this.walkFrame%2 >1 || this.walkFrame%2 < lastWalkFrame%2)
{
let isOnSand = this.IsOnSand();
let angle = this.rotation * PI/2;
let side = this.walkFrame%2 < lastWalkFrame%2? 1 : -1
let offset = (new Vector2(0,side/8)).Rotate(angle);
let footPos = this.pos.Clone().Add(offset);
let c = isOnSand?'#4215':'#2223';
let s = new Vector2(.2,isOnSand?.2:.1);
if (isOnSand)
{
s.y*=RandBetween(1,1.5);
s.x*=RandBetween(1,1.5);
}
footPos.y+=.3;
level.DrawEllipse(footPos,s,c,angle);
}
}
BloodSplat(scale=1,particles=1)
{
// draw a bunch of random ellipses
if (this.bloodAdditive)
levelCanvasContext.globalCompositeOperation='screen';
for(let i=30;i--;)
{
let pos = this.pos.Clone().Add(RandVector(Rand(scale*this.size.x)));
let size = new Vector2(this.size.x*RandBetween(.2,.5),this.size.y*RandBetween(.2,.5))
let angle = RandBetween(0,2*PI);
level.DrawEllipse(pos,size.Multiply(scale),this.bloodColor.RGBA(),angle);
}
levelCanvasContext.globalCompositeOperation='source-over';
// kick off a particle effect
if (particles)
{
let s = scale*this.size.x;
let p = new ParticleEmitter
(
this.pos, s*.6, s*.2, // pos, emitter size, particle size
this.bloodColor.Clone().SetAlpha(1),
this.bloodColor.Clone(this.bloodAdditive?3:.5).SetAlpha(1)
);
}
}
Kill()
{
this.BloodSplat();
PlaySound(9);
super.Kill();
}
Render()
{
// invisible objects become visible when damaged
if (this.isInvisible && !shadowRenderPass && !hitRenderPass)
mainCanvasContext.globalAlpha= .1 + this.GetDamageFlashPercent();
super.Render();
}
IsOnSand() { return level.GetDataFromPos(this.pos).type == 2; }
}
class Player extends MyGameObject
{
constructor(pos)
{
super(pos,0,4,.5,.4,playerData.healthMax);
this.health = playerData.health;
this.dashTimer = new Timer();
this.throwTimer = new Timer();
this.inputTimer = new Timer();
this.playerDamageTimer = new Timer();
this.inputTimer.Set();
this.throwRotation = 0;
this.posBuffer = [];
this.dashWaitTime = 3;
this.radarSize=2;
}
IsDashing() { return !this.dashTimer.Elapsed(); }
CollideLevel(data, pos)
{
// destroy level if dashing
if (this.IsDashing())
return DestroyLevelObject(pos);
else
return super.CollideLevel(data, pos);
}
IsIntro() { return (levelTimer.Get() < 1.5) }
Update()
{
// keep player data updated
playerData.health = this.health;
if (this.IsDead() || endLevelTimer.IsSet() || this.IsIntro())
{
// stop and do no more
return;
}
if (this.health <= 1 && healthWarning.Get() > this.health)
{
// health warning
healthWarning.Set();
PlaySound(11);
}
if (MouseWasPressed() && (playerData.boomerangs|| playerData.bigBoomerangs))
{
// throw boomerang
let isBig = 0;
if (playerData.bigBoomerangs)
{
--playerData.bigBoomerangs;
isBig = 1;
}
else
--playerData.boomerangs;
let b = new Boomerang(this.pos,isBig);
this.throwRotation= b.Throw(this, mousePosWorld);
this.throwTimer.Set(.4);
}
// move input
let acceleration = new Vector2();
if (KeyIsDown(65))
acceleration.x -= 1,this.rotation=0;
if (KeyIsDown(68))
acceleration.x += 1,this.rotation=2;
if (KeyIsDown(87))
acceleration.y -= 1,this.rotation=3;
if (KeyIsDown(83))
acceleration.y += 1,this.rotation=1;
let isOnSand = this.IsOnSand();
if (this.IsDashing())
{
// update dash
if (!acceleration.x && !acceleration.y)
acceleration.Set(-1,0).Rotate(-this.rotation*PI/2);
// no damage or slow from sand while dashing
this.damageTimer.Set();
isOnSand = 0;
// track players position for the dash render effect
if (frame%3==0)
this.posBuffer.push(this.pos.Clone());
if (this.posBuffer.length > 20)
this.posBuffer.shift();
}
else
{
// update non dash
this.posBuffer = [];
if (this.dashTimer.IsSet() && this.dashTimer.Get()>this.dashWaitTime)
{
// play sound when dash is ready again
this.dashTimer.UnSet();
PlaySound(16);
}
if ((KeyWasPressed(32)||KeyWasPressed(16)) && !this.dashTimer.IsSet())
{
// start dash
PlaySound(12);
this.dashTimer.Set(.5);
}
}
if (acceleration.x || acceleration.y)
{
// apply acceleration
acceleration.Normalize(.016*(isOnSand?.5:1));
if (this.IsDashing())
acceleration.Multiply(2);
this.velocity.Add(acceleration);
this.inputTimer.Set();
}
// reset walk frame when input isnt pressed for a while
if (this.inputTimer.Get() > 1)
this.walkFrame = 0;
// update walk if not throwing or dashing
if (this.throwTimer.Elapsed() && !this.IsDashing())
this.UpdateWalk();
super.Update();
}
Render()
{
if (endLevelTimer.IsSet())
return;
if (this.IsDead() || this.IsIntro() && isStartLevel)
{
// set to dead tile
this.tileX = 7;
this.tileY = 3;
super.Render();
return;
}
// figure out the tile, rotation and mirror
this.tileY = 4;
if (this.rotation&1)
{
// facing left or right
// walk by toggling betwen 2 frames and mirror to face direction
this.tileX = this.rotation==1?2:3;
this.mirror = this.walkFrame%2|0;
if (!this.throwTimer.Elapsed()||!this.dashTimer.Elapsed())
this.tileX += 3; // throw/dash frame
else if (this.inputTimer.Get() > 1 && this.rotation==1)
{
// idle
this.tileX = 7;
this.mirror = (this.inputTimer.Get()/2|0)&1;
}
}
else
{
// facing up or down
// walk by toggling mirror and select frame to face direction
this.mirror = this.rotation!=2;
this.tileX = this.walkFrame%2|0;
if (!this.throwTimer.Elapsed()||!this.dashTimer.Elapsed())
this.tileX = 4; // throw/dash frame
}
let hit = hitRenderPass;
if (!this.throwTimer.Elapsed())
{
// use the throw rotation if throwing
this.rotation = this.throwRotation;
if (this.rotation&1)
this.mirror = this.rotation==1;
}
if (!shadowRenderPass && hit)
{
// draw the position buffer during the hit render pass when dashing
mainCanvasContext.globalCompositeOperation = 'screen';
for(let i=this.posBuffer.length;i--;)
{
hitRenderPass = hit*(i/this.posBuffer.length + .01);
DrawTile(this.posBuffer[i],this.size,this.tileX,this.tileY,this.angle,this.mirror,this.height);
}
hitRenderPass = hit;
mainCanvasContext.globalCompositeOperation = 'difference';
}
let d = this.dashTimer.Get();
if (!shadowRenderPass && d<this.dashWaitTime+.5)
{
// show a white outline around the player when dash is charging
hitRenderPass = d<this.dashWaitTime?d/this.dashWaitTime:Math.sin((d-this.dashWaitTime)*PI*4);
DrawTile(this.pos,this.size.Clone(1.1),this.tileX,this.tileY,this.angle,this.mirror,this.height);
hitRenderPass = hit;
}
super.Render();
if (playerData.boomerangs || playerData.bigBoomerangs)
{
// draw boomerang on player's back
let x = playerData.bigBoomerangs?7:0;
if (this.rotation == 3)
DrawTile(this.pos,this.size,x,5);
if (this.rotation%2==0)
DrawTile(this.pos.Clone().AddXY(-(this.rotation-1)*.2,0),this.size.Clone(new Vector2(.6,1)),x,5);
}
}
Damage(damage)
{
// extra long damage timer for player
if (!this.playerDamageTimer.Elapsed())
return 0;
// prepvent damage during intro/outro
if (godMode || endLevelTimer.IsSet() || this.IsIntro() || winTimer.IsSet())
return 0;
// try to apply damage
let damageDone = super.Damage(damage);
if (!damageDone)
return 0;
this.BloodSplat();
PlaySound(1);
this.playerDamageTimer.Set(1);
return damageDone;
}
Kill()
{
this.BloodSplat(2);
PlaySound(2);
}
}
///////////////////////////////////////////////////////////////////////////////
class Boomerang extends MyGameObject
{
constructor(pos,isBig=0)
{
super(pos,isBig?7:0,5,.5,isBig?.45:.4);
this.damping = .98;
this.angle = 0;
this.canDamageLevel = 1;
this.heldPickup = 0;
this.throwAccel = 0;
this.throwFrames = 0;
this.bounceObject = 0;
this.isBig = isBig;
}
Throw(owner, targetPos)
{
PlaySound(7)
this.throwFrames = this.isBig?9:8;
this.throwAccel = targetPos.Clone().Subtract(owner.pos);
this.throwAccel.Normalize(.04);
this.angleVelocity = .5;
this.height = this.angleVelocity/2;
this.velocity = owner.velocity.Clone();
return this.throwAccel.Rotation();
}
CollideLevel(data, pos)
{
if (data.object)
this.damageTimer.Set(); // flash when it hits an object
return DestroyLevelObject(pos,!this.isBig);
}
Update()
{
if (this.throwFrames)
this.throwFrames--;
if (!this.angleVelocity)
{
// boomerang is on the ground
this.radarSize=3;
this.damageFlashTime = .8;
this.differenceFlash = 0;
if (this.heldPickup)
this.heldPickup.isHeld=0;
this.heldPickup=0;
if (Rand() < .005 && this.damageTimer.Get() > 4*this.damageFlashTime)
this.damageTimer.Set(-this.damageFlashTime/2); // sparkle
}
else
{
if (endLevelTimer.IsSet())
endLevelTimer.Set(1); // wait for boomerang to end level
// apply throw acceleration
let a = this.GetLifeTime();
if (!mouseIsDown || !this.throwFrames)
this.throwAccel=0;
else if (this.throwAccel)
this.velocity.Add(this.throwAccel);
// reduce angular velocity
this.angleVelocity -= .002;
if (this.angleVelocity < .1)
{
// slow it down even faster
this.angleVelocity -= .005;
this.velocity.Multiply(.8);
if (this.angleVelocity < 0)
this.angleVelocity = 0;
}
// height is proportional to angular velocity
this.height = this.angleVelocity/2;
if (!this.throwAccel && this.height > 0)
{
// pull to player
let d = player.pos.Clone();
d.Subtract(this.pos).Multiply(0.004 * this.angleVelocity);
this.velocity.Add(d);
}
gameObjects.forEach(o=>
{
if (!this.isBig && o.isSmallPickup && o.GetLifeTime() > .5 && !o.isHeld && !this.heldPickup && o.IsTouching(this))
{
// grab object
o.isHeld = 1;
this.heldPickup = o;
}
else if ((o.isEnemy||o.isStore) && o.IsTouching(this))
{
// hit object
if (this.bounceObject == o || o.ReflectDamage(this.velocity))
{
if (this.bounceObject != o)
{
// reflect
PlaySound(15);
this.bounceObject = o;
this.velocity.Multiply(-.4);
this.angleVelocity*=.4;
this.damageTimer.Set();
this.throwAccel=0;
}
}
else if (o.Damage(1+this.isBig))
{
// apply damage
if (!isStartLevel) // dont push in hub
o.velocity.Add(this.velocity.Clone(.5));
this.damageTimer.Set();
}
}
});
}
// let player pick it up
if ((!this.angleVelocity || this.GetLifeTime() > .5) && !player.IsDead() && player.Distance(this) < .6)
this.Pickup();
super.Update();
// set all pickups to match our position
if (this.heldPickup)
this.heldPickup.pos.Copy(this.pos).AddXY(0,-.001);
}
Pickup()
{
PlaySound(6);
if (this.isBig)
playerData.bigBoomerangs++;
else
playerData.boomerangs++;
player.throwTimer.Set(.3);
player.throwRotation=this.pos.Clone().Subtract(player.pos).Rotation();
this.Destroy();
}
}
///////////////////////////////////////////////////////////////////////////////
class Pickup extends MyGameObject
{
// type: 0=half, 1=whole, 2=container, 3=coin, 4=large coin
constructor(pos, type=0)
{
super(pos,2+type,5,.5,.3);
this.type = type;
this.timeOffset = Rand(9);
this.isSmallPickup = type != 2;
this.isHeld=0;
this.differenceFlash = 0;
this.damageFlashTime = .8;
this.radarSize = this.isSmallPickup?1:3;
}
Update()
{
// random sparkles
if (Rand() < .005 && this.damageTimer.Get() > 4*this.damageFlashTime)
this.damageTimer.Set(-this.damageFlashTime/2);
// bob up and down
this.height = .1+.1*Math.sin(2*time+this.timeOffset);
// let player pick it up
if (!player.IsDead() && player.IsTouching(this))
this.Pickup();
else if (boss && boss.IsTouching(this))
{
// boss destroys pickups
PlaySound(14);
this.Destroy();
}
super.Update();
}
Pickup()
{
if (this.type==2)
{
// heart container
++playerData.healthMax;
player.healthMax = playerData.healthMax;
player.Heal(1);
PlaySound(4);
}
else if (this.type==3)
{
// 1 coin
PlaySound(10);
++playerData.coins;
}
else if (this.type==4)
{
// 5 coin
PlaySound(10);
playerData.coins+=5;
}
else
{
// half or whole heart
player.Heal(.5+ this.type/2)
PlaySound(3);
}