Rocket-Bytes/Source/Player.lua

import "CoreLibs/math"

local velocity = {x=0,y=0}
local lerpmnt <const> = 0.5
local grav <const> = 0.2

local exists = false
local active = false
local gfx <const> = playdate.graphics
local imgRocket = gfx.image.new("gfx/rocket")
assert(imgRocket)
local sprRocket = gfx.sprite.new(imgRocket)
sprRocket:setCollideRect(7, 7, 14, 14)
local startpos = {x=0,y=0}

function addPlayer(_x,_y)
    exists = true
    active = false
    velocity = {x=0,y=0}
    startpos = {x= _x,y=_y}
    sprRocket:moveTo(_x,_y)
    sprRocket:add()
end

function killPlayer()
    exists = false
    active = false
    sprRocket:remove()
    gfx.setDrawOffset(0,0)
end

local function die()
    active = false
    velocity = {x=0,y=0}
    sprRocket:moveTo(startpos.x, startpos.y) 
end

function updatePlayer()
    if active == true then
        if playdate.buttonIsPressed(playdate.kButtonUp) then
            velocity.x = velocity.x + math.sin(math.rad(playdate.getCrankPosition())) /2
            velocity.y = velocity.y - math.cos(math.rad(playdate.getCrankPosition())) /2
        end
        sprRocket:moveBy(velocity.x,velocity.y)

        local cx, cy = gfx.getDrawOffset()
        gfx.setDrawOffset(playdate.math.lerp(cx,(-sprRocket.x + 200), lerpmnt), playdate.math.lerp(cy,(-sprRocket.y + 120), lerpmnt))

        sprRocket:setRotation(0)
        sprRocket:update()
        --print(#sprRocket:overlappingSprites())

        velocity.y += grav
        
        if #sprRocket:overlappingSprites() > 0 then 
            die()
        end

    elseif exists == true then
        if playdate.buttonIsPressed(playdate.kButtonUp) then
            active = true
        end
        local cx, cy = gfx.getDrawOffset()
        gfx.setDrawOffset(playdate.math.lerp(cx,(-sprRocket.x + 200), lerpmnt), playdate.math.lerp(cy,(-sprRocket.y + 120), lerpmnt))
    end

    sprRocket:setRotation(playdate.getCrankPosition())
end