love2d-tank/player.lua

Player = Object:extend()
local cos = math.cos
local sin = math.sin --optimisation
local max = math.max --optimisation

-- Constructor for the Player class
function Player:new(p, x, y, health, image, speed)
	self.p = p
	self.image = love.graphics.newImage(image)
	self.x = x
	self.y = y
	self.health = health
	self.speed = speed
	self.bulletSpeed = _G.DEFAULT_B_SPEED
	self.width = self.image:getWidth()
	self.height = self.image:getHeight()

	--Power up flag
	self.PUName = ""
	self.PUTime = 0
	self.PUOn = false

	-- Collision Stuff
	--self.collider = World:newRectangleCollider(x, y, 50, 62)
	self.collider = World:newCircleCollider(x, y, 24 * X_SCALE)
	self.collider:setFixedRotation(true)

	if self.p == 1 then
		self.collider:setCollisionClass("Player1")
	elseif self.p == 2 then
		self.collider:setCollisionClass("Player2")
	end

	-- Rotation Stuff
	self.rotation = math.rad(90)
	self.rotSpeed = 3
	--self.scaleX = 1 * _G.X_SCALE
	--self.scaleY = 1 * _G.Y_SCALE
	self.scaleX = 1
	self.scaleY = 1
	self.originX = self.width / 2
	self.originY = self.height / 2

	--Velocity
	self.vx = 0
	self.vy = 0

	-- Bullets shot
	self.shot = 0
end

-- Method to handle shooting
function Player:shoot(bulletSpeed)
	if self.shot <= 10 then
		self.shot = self.shot + 1
		local offsetX = cos(self.rotation) * self.width * 1.5
		local offsetY = sin(self.rotation) * self.height * 1.5
		local bulletX = self.x + offsetX
		local bulletY = self.y + offsetY
		local newBullet = Bullet(bulletX, bulletY, self.p, bulletSpeed, self.rotation)
		return newBullet
	else
		return nil
	end
end

function Player:handleKeys(up, down, left, right, dt)
	self.vx, self.vy = 0, 0 --reset every frame
	if love.keyboard.isDown(up) then
		self.vx = cos(self.rotation) * (self.speed * dt)
		self.vy = sin(self.rotation) * (self.speed * dt)
	end
	if love.keyboard.isDown(down) then
		self.vx = cos(self.rotation) * (self.speed / 2 * dt) * -1
		self.vy = sin(self.rotation) * (self.speed / 2 * dt) * -1
	end
	if love.keyboard.isDown(left) then
		self.rotation = self.rotation - (self.rotSpeed * dt)
	end
	if love.keyboard.isDown(right) then
		self.rotation = self.rotation + (self.rotSpeed * dt)
	end
	self.collider:setLinearVelocity(self.vx, self.vy)
end

function Player:updateCol()
	if self.p == 1 then
		self.x = self.collider:getX()
		self.y = self.collider:getY()
	elseif self.p == 2 then
		self.x = self.collider:getX()
		self.y = self.collider:getY()
	end
end

function Player:getPowerUp(powerup)
	self.PUName = powerup.name
	self.PUTime = powerup.time
end

function Player:powerup()
	self.PUOn = true
	if self.PUName == "speed" then
		--print("" .. self.PUName .. " for " .. self.PUTime)
		self.speed = self.speed * 2.5
		self.rotSpeed = self.rotSpeed * 1.5
	end
end

-- Update method for the Player class
function Player:update(dt)
	if self.PUOn then
		self.PUTime = self.PUTime - dt

		if max(0, self.PUTime) <= 0 then
			-- Reset the player
			self.PUName = "none"
			self.PUTime = 0
			self.PUOn = false
			self.speed = _G.DEFAULT_P_SPEED
		end
	end
	if EnableKeyPress1 == true and self.p == 1 then
		if love.keyboard.isDown("space") then
			local newBullet = self:shoot(self.bulletSpeed)
			table.insert(Bullets1, newBullet)
			KeyPressTime1 = KeyDelay1
			EnableKeyPress1 = false
		end
	end

	if EnableKeyPress2 == true and self.p == 2 then
		if love.keyboard.isDown("return") then
			local newBullet = self:shoot(self.bulletSpeed)
			table.insert(Bullets2, newBullet)
			KeyPressTime2 = KeyDelay2
			EnableKeyPress2 = false
		end
	end
end

function Player:draw()
	love.graphics.draw(self.image, self.x, self.y, self.rotation, self.scaleX, self.scaleY, self.originX, self.originY)
end