LÖVE

Posted: **Sun Mar 17, 2013 8:38 pm**

Hello guys, my first time here.

I'm trying to learn how to make a platform game and i need to make the player jump. The main problem is, by the code i have, the player only jumps when the spacebar is pressed, if i release it, the player stops in the air and, when i press it again the plays continue to move down. The code:

Main.lua

Code: Select all

require "player"

function love.load()
	love.graphics.setBackgroundColor(35, 35, 35) -- Cor de Fundo
	player.load() -- Lê o jogador
end

function love.update(dt)
	player.move(dt) -- Movimenta o jogador
	player.boundary(dt) -- Verifica se o jogador não passa das paredes
	player.jump(dt) -- Faz o jogador pular
end

function love.draw()
	love.graphics.setColor(120, 120, 120) -- Cor do Chão
	love.graphics.rectangle("fill", 0, 350, 400, 50) -- Chão

	player.draw() -- Desenha o jogador
end

Player.lua

Code: Select all

player = {}

function player.load()
	player.width = 10
	player.height = 10
	player.x = 5
	player.y = 340
	player.mass = 60
	player.speed = 175
	player.y_speed = 0
end

function player.draw()
	love.graphics.setColor(255, 0, 0) -- vermelho
	love.graphics.rectangle("fill", player.x, player.y, player.width, player.height) -- retangulo
end

function player.move(dt)
	if (love.keyboard.isDown("a")) then -- Andar para a esquerda
		player.x = player.x - player.speed * dt
	elseif (love.keyboard.isDown("d")) then -- Andar para a direita
		player.x = player.x + player.speed * dt
	elseif (love.keyboard.isDown("w")) then -- Andar para cima (Ainda não é pular)
		player.y = player.y - (player.speed) * dt
	elseif (love.keyboard.isDown("s")) then -- Andar para baixo
		player.y = player.y + (player.speed) * dt
	end
end

function player.jump(dt) -- POR FAZER
	if player.y_speed == 0 then
		player.y_speed = 220
	end

	if (love.keyboard.isDown(" ")) then
		player.y = player.y - player.y_speed*dt
		player.y_speed = player.y_speed - 9.8 * player.mass * dt
	end

	if (player.y == 350 - player.height) then
		player.y_speed = 0
	end
end

function player.boundary(dt)
	if (player.x < 0) then -- não passa do lado esquerdo
		player.x = 0
	elseif (player.x > 400 - player.width) then -- não passa do lado direito
		player.x = 400 - player.width
	elseif (player.y > 350 - player.height) then -- não passa do chão
		player.y =  350 - player.height
	elseif (player.y < 0) then -- não passa do teto
		player.y = 0
	end
end

OBS: The -- Comments are in portuguese language, ignore it.

EDIT: Hey guys! Managed to fix it. Just change the position of some stuff and worked.
Here's the changes:

Code: Select all

function player.jump(dt) -- POR FAZER
	if (love.keyboard.isDown(" ") and player.y_speed == 0) then
		player.y_speed = 220
	end

	player.y = player.y - player.y_speed*dt
	player.y_speed = player.y_speed - 9.8 * player.mass * dt

	if (player.y > 350 - player.height) then
		player.y = 350 - player.height
		player.y_speed = 0
	end
end

LÖVE

Jumping problem...

Jumping problem...