love2d-tank/main.lua

Object = require("libs/classic")

require("constants")
WF = require("libs/windfield")
STI = require("libs/sti")

World = WF.newWorld(0, 0) --no gravity
--World:setQueryDebugDrawing(true) -- Draws the area of a query for 10 frames
World:addCollisionClass("Player1")
World:addCollisionClass("Bullet1")
World:addCollisionClass("Player2")
World:addCollisionClass("Bullet2")
World:addCollisionClass("Wall")
World:addCollisionClass("PowerUp")

require("gui")
require("powerups/powerup")
require("powerups/speed")
require("restart")
require("truncate")
require("player")
require("bullet")
require("mapsloader")

require("Game/UpdateGame")
require("Menu/UpdateMenu")
require("Pause/UpdatePause")
require("Win/UpdateWin")

require("Game/DrawGame")
require("Menu/DrawMenu")
require("Pause/DrawPause")
require("Win/DrawWin")

require("Game/GameKeyPressed")
require("Menu/MenuKeyPressed")
require("Pause/PauseKeyPressed")
require("Win/WinKeyPressed")

--Fonts used in the game
GameFont = love.graphics.newFont("assets/Daydream.ttf", 60)
DebugFont = love.graphics.newFont("assets/Daydream.ttf", 12)
MenuFont = love.graphics.newFont("assets/Daydream.ttf", 45)
Walls = {}

-- Music streaming
musicMenu = love.audio.newSource("music/menu.mp3", "stream") or nil
musicBattle = love.audio.newSource("music/battle.mp3", "stream") or nil
--musicStory = love.audio.newSource("music/story.mp3", "stream") or nil

musicPause = musicBattle:clone()
musicPause:setFilter({
	type = "lowpass",
	volume = 0.7,
	highgain = 0.4,
})

function love.run()
	if love.load then
		love.load(love.arg.parseGameArguments(arg), arg)
	end

	-- We don't want the first frame's dt to include time taken by love.load.
	if love.timer then
		love.timer.step()
	end

	local dt = 0

	-- Main loop time.
	return function()
		-- Process events.
		if love.event then
			love.event.pump()
			for name, a, b, c, d, e, f in love.event.poll() do
				if name == "quit" then
					if not love.quit or not love.quit() then
						return a or 0
					end
				end
				love.handlers[name](a, b, c, d, e, f)
			end
		end

		-- Update dt, as we'll be passing it to update
		if love.timer then
			dt = love.timer.step()
		end

		-- Call update and draw
		if love.update then
			love.update(dt)
		end -- will pass 0 if love.timer is disabled

		if love.graphics and love.graphics.isActive() then
			love.graphics.origin()
			love.graphics.clear(love.graphics.getBackgroundColor())

			if love.draw then
				love.draw()
			end

			love.graphics.present()
		end

		if love.timer then
			love.timer.sleep(0.001)
		end
	end
end

function love.resized()
	--TOD0: fix scaling!
end

function love.load()
	-- Set a random seed
	love.math.setRandomSeed(love.timer.getTime())
	-- Figure out the X_SCALE and Y_SCALE
	local curWidth, curHeight = love.graphics.getDimensions()
	_G.X_SCALE = truncate(curWidth / GAME_WORLD_DIM_WIDTH, 3)
	_G.Y_SCALE = truncate(curHeight / GAME_WORLD_DIM_HEIGHT, 3)

	--Game values (reset after each load)
	HEALTH = 3
	P1_DELAY = 0.5
	P2_DELAY = 0.5

	--Bullet lists
	Bullets1 = {}
	Bullets2 = {}

	--PowerUp stuff
	PowerUps = {}
	PUTimeToPlace = _G.PU_TIMER

	DebugFlag = false
	EnableKeyPress1 = true
	KeyPressTime1 = 0
	KeyDelay1 = P1_DELAY

	EnableKeyPress2 = true
	KeyPressTime2 = 0
	KeyDelay2 = P2_DELAY

	--TODO: two player speeds for upgrades
	UserPlayer1 = Player(1, 1000, 100, HEALTH, "assets/player1.png", 12000)
	UserPlayer2 = Player(2, 200, 300, HEALTH, "assets/player2.png", 12000)

	--STI Map loading
	LoadMap(_G.CUR_LEVEL)
end

function love.keypressed(key)
	if _G.GAMESTATE == "MENU" then
		MenuKeyPressed(key)
	end
	if _G.GAMESTATE == "PAUSE" then
		PauseKeyPressed(key)
	end
	if _G.GAMESTATE == "GAME" then
		GameKeyPressed(key)
	end
	if _G.GAMESTATE == "WIN" then
		WinKeyPressed(key)
	end
end

function love.update(dt)
	if _G.GAMESTATE == "MENU" then
		UpdateMenu(dt)
		-- Handle music
		if not musicMenu:isPlaying() and not _G.MUTED then
			musicMenu:setVolume(0.5)
			love.audio.play(musicMenu)
		end
	end
	if _G.GAMESTATE == "PAUSE" then
		UpdatePause(dt)
		-- Handle music
		if not musicPause:isPlaying() and not _G.MUTED then
			musicBattle:setVolume(0)
			musicPause:setVolume(0.5)
			love.audio.play(musicBattle)
			love.audio.play(musicPause)
		end
	end
	if _G.GAMESTATE == "GAME" then
		UpdateGame(dt)
		-- Handle music
		if not musicBattle:isPlaying() and not _G.MUTED then
			musicBattle:setVolume(0.5)
			musicPause:setVolume(0)
			love.audio.play(musicBattle)
			love.audio.play(musicPause)
		end
	end
	if _G.GAMESTATE == "WIN" then
		UpdateWin(dt)
	end
end

function love.draw()
	if _G.GAMESTATE == "MENU" then
		DrawMenu()
	end
	if _G.GAMESTATE == "PAUSE" then
		DrawPause()
	end
	if _G.GAMESTATE == "GAME" then
		DrawGame()
	end
	if _G.GAMESTATE == "WIN" then
		DrawWin()
	end
end