some-usable-scripts/lua/simple_test/love/avalanche/main.lua

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2013-02-02 01:51:16 +01:00
-- Example: Avalanche of LOVE
-- Contains all the balls.
balls = {}
-- Contains all the boxes. (Terrain)
boxes = {}
function love.load()
-- Fat lines.
love.graphics.setLineWidth(2)
-- Load images.
images = {
green = love.graphics.newImage("green_ball.png"),
big_love = love.graphics.newImage("big_love_ball.png"),
love = love.graphics.newImage("love_ball.png"),
}
-- Image / radius pairs.
balldefs = {
{ i = images.green, r = 32 , ox = 36, oy = 36},
{ i = images.big_love, r = 46 , ox = 48, oy = 48},
{ i = images.love, r = 28 , ox = 32, oy = 32},
}
-- Create the world.
world = love.physics.newWorld(0, 50)
-- Create ground body.
ground = love.physics.newBody(world, 0, 0, "static")
-- Add all the balls.
addball(balldefs[1], 50) -- Add 100 green.
addball(balldefs[2], 5) -- Add 5 big.
addball(balldefs[3], 25) -- Add 50 pink.
-- This generates the terrain.
for i = 0, 10 do
addbox(i*50, i*50+100)
end
end
function love.update(dt)
-- Update the world.
world:update(dt)
-- Check whether we need to reset some balls.
-- When they move out of the screen, they
-- respawn above the screen.
for i,v in ipairs(balls) do
local x, y = v.b:getPosition()
if x > 850 or y > 650 then
v.b:setPosition(math.random(0, 400), -math.random(100, 1500))
v.b:setLinearVelocity(0, 0)
end
end
end
function love.draw()
-- Draw all the balls.
for i, v in ipairs(balls) do
love.graphics.draw(v.i, v.b:getX(), v.b:getY(), v.b:getAngle(), 1, 1, v.ox, v.oy)
end
-- Draw all the boxes.
for i, v in ipairs(boxes) do
love.graphics.polygon("line", v.s:getPoints())
end
end
-- Adds a static box.
function addbox(x, y)
local t = {}
t.b = ground
t.s = love.physics.newRectangleShape(x, y, 50, 50)
t.f = love.physics.newFixture(t.b, t.s)
table.insert(boxes, t)
end
-- Adds X balls.
function addball(def, num)
for i = 1, num do
local x, y = math.random(0, 400), -math.random(100, 1500)
local t = {}
t.b = love.physics.newBody(world, x, y, "dynamic")
t.s = love.physics.newCircleShape(def.r)
t.f = love.physics.newFixture(t.b, t.s)
t.i = def.i
t.ox = def.ox
t.oy = def.oy
table.insert(balls, t)
end
end