bullet-heck/bullet.lua

Bullet = class()

function Bullet:init(x, y, vx, vy)
    self.x = x
    self.y = y
    self.vx = vx
    self.vy = vy
    self.dead = false
end

function Bullet:update(world)
    self.x = self.x + self.vx
    self.y = self.y + self.vy

    if self.x < 1 or self.x > WIDTH or self.y < 1 or self.y > HEIGHT then
        self.dead = true
    end
end

function Bullet:draw(text)
    local chars
    chars = {
        { '\\', '^', '/' },
        { '<', '+', '>' },
        { '/', 'v', '\\' }
    }

    text[self.y][self.x] = {
        char = chars[self.vy + 2][self.vx + 2],
        color = COLOR.BULLET
    }
end