let height=750

let bwidth=80

let bheight=80

let blocks=[]

let camera=[10,0]

let x=[10,-1]

let topb=[]

let drilling=0

let velY=0

let velX=0

let air=0

function setup() {

  createCanvas(width, height);

  for(let i=0;i<20;i++){

    blocks.push([])

    for(let j=0;j<20;j++){

      let r='mud'

      if(random()<0.1){

        r='gold'

      }

      blocks[i].push(new block([i,j],r))

      topb.push(0)

    }

  }

}

​

function draw() {

  background(220);

  let ground = min(topb[floor(x[0]+0.1)]-1,topb[floor(x[0]+0.9)]-1)

  air=(x[1]<ground+velY)||keyIsDown(UP_ARROW)

  mleft=1-min(blocks[floor(x[0])][(floor(x[1])>=0)*ceil(x[1])].vis,x[1]>-1)

  mright=1-min(blocks[ceil(x[0])][(floor(x[1])>=0)*ceil(x[1])].vis,x[1]>-1)

  velY=air*(velY+(1-2*keyIsDown(UP_ARROW))/3/bheight)

  velX=air*velX

  x[0]+=((x[0]<19.9)*2*keyIsDown(RIGHT_ARROW)*mright-(x[0]>0.1)*2*keyIsDown(LEFT_ARROW)*mleft+velX)/bwidth

  x[1]=floor(x[1])*(1-air)+air*(x[1]+velY)

  camera[0]+=((x[0]-camera[0]>3)-(x[0]-camera[0]<-4))/bwidth

  camera[1]+=velY*((x[1]-camera[1]>3)+(x[1]-camera[1]<-4))

  noStroke()

  fill('blue')

  rect(0,0,width,height)

  fill('red')

  rect((x[0]-camera[0]+5.1)*bwidth,(x[1]-camera[1]+5.1)*bheight,bwidth*0.8,bheight*0.9)

  //print(x[1])

  for(let i=floor(max(camera[0]-5,0));i<floor(max(camera[0]+6,0));i++){

    for(let j=floor(max(camera[1]-5,0));j<floor(max(camera[1]+6,0));j++){

      blocks[i][j].show(camera)

    }

  }

  if(drilling>0){

  }

}

class block{

  constructor(pos,type){

    this.pos=pos

    this.type=type

    this.vis=1

  }

  show(cam){

    //print(this.pos[0]+','+this.pos[1])

    if(this.vis){

    let col='#643E30'

    if(this.type=='gold'){col='gold'}

    fill(col)

    rect(bwidth*(max(this.pos[0]-cam[0]+5,0)),bheight*(max(this.pos[1]-cam[1]+5,0)),bwidth,bheight)}

  }

  collision(x){

  }

}

function keyPressed(){

  if(air==0&&keyCode!=UP_ARROW){

    let blo = blocks[round(x[0])+(x[0]-floor(x[0])<0.2)*(keyCode==RIGHT_ARROW)-(ceil(x[0])-x[0]<0.2)*(keyCode==LEFT_ARROW)][max(x[1]+(keyCode==DOWN_ARROW),0)]

      blo.vis=(blo.type=='rock')

      topb[blo.pos[0]]+=blo.pos[1]==topb[blo.pos[0]]

    }

}