73 lines
2.1 KiB
Lua
73 lines
2.1 KiB
Lua
local HC = require 'assets/scripts/vendor/HC'
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local tools = require 'assets/scripts/tools'
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local asteroids = {}
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local collision_debug = false
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local imgs = nil
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function asteroids.load(game)
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imgs = {
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love.graphics.newImage('assets/sprites/asteroids/asteroid01.png'),
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love.graphics.newImage('assets/sprites/asteroids/asteroid02.png'),
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love.graphics.newImage('assets/sprites/asteroids/asteroid03.png'),
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love.graphics.newImage('assets/sprites/asteroids/asteroid04.png')
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}
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asteroids.num = game.level * 5
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asteroids.max_speed = 5
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asteroids.collision_size = 50
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-- Make asteroids
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asteroids.bodys = {}
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for i = 1, asteroids.num do
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make_asteroid(i, game, true)
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end
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end
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function asteroids.update(dt, game)
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-- Move asteroids
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for key, asteroid in pairs(asteroids.bodys) do
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-- Rotate
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asteroid.angle = asteroid.angle + (dt * math.pi / 10)
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-- Move
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asteroid.x = asteroid.x - asteroid.speed
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-- Collisions
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asteroid.collision:moveTo(asteroid.x, asteroid.y)
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end
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-- Destroy asteroids
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for key, asteroid in pairs(asteroids.bodys) do
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if asteroid.x + asteroid.img:getWidth() < 0 then
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HC.remove(asteroid.collision)
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table.remove(asteroids.bodys, key)
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end
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end
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-- Create asteroids
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if tools.table_length(asteroids.bodys) < asteroids.num then
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make_asteroid(tools.table_length(asteroids.bodys) + 1, game, false)
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end
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end
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function asteroids.draw()
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for key, asteroid in pairs(asteroids.bodys) do
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love.graphics.draw(asteroid.img, asteroid.x, asteroid.y, asteroid.angle, 1, 1, asteroid.img:getWidth() / 2, asteroid.img:getHeight() / 2)
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if collision_debug then
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asteroid.collision:draw('fill')
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end
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end
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end
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function make_asteroid(pos, game, x_random)
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local temp_img = imgs[math.random(1, tools.table_length(imgs))]
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asteroids.bodys[pos] = {
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x = game.canvas.width + temp_img:getWidth(),
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y = math.random(game.window.height / 2, game.canvas.height - temp_img:getHeight()),
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speed = math.random(1, asteroids.max_speed),
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img = temp_img,
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angle = math.random(0, 90),
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collision = HC.circle(0, 0, asteroids.collision_size)
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}
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if x_random then
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asteroids.bodys[pos].x = math.random(0, game.canvas.width - temp_img:getWidth())
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end
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end
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return asteroids |