80 lines
1.7 KiB
Lua
80 lines
1.7 KiB
Lua
local Player = {}
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local function vec2(x, y)
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return function()
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return { x = x, y = y }
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end
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end
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local function vec2_length(v)
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return math.sqrt(v().x * v().x + v().y * v().y)
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end
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local function vec2_add(v1, v2)
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return vec2(v1().x + v2().x, v1().y + v2().y)
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end
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local function vec2_normalize(v)
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local length = vec2_length(v)
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if (length == 0) then return vec2(0, 0) end
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return vec2(v().x / length, v().y / length)
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end
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local function vec2_scale(v, factor)
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return vec2(v().x * factor, v().y * factor)
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end
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local function vec2_to_string(v)
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return "{" .. v().x .. ", " .. v().y .. "}"
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end
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function Player:init()
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self.position = vec2(0, 0)
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self.velocity = vec2(0, 0)
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self.sprite = love.graphics.newImage("player.png")
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end
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function Player:update(dt)
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local speed = 30
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local friction = 0.05
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local acc = vec2(0, 0)
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if (love.keyboard.isDown('w')) then
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acc = vec2_add(acc, vec2(0, -1))
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end
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if (love.keyboard.isDown('a')) then
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acc = vec2_add(acc, vec2(-1, 0))
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end
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if (love.keyboard.isDown('d')) then
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acc = vec2_add(acc, vec2(1, 0))
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end
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if (love.keyboard.isDown('s')) then
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acc = vec2_add(acc, vec2(0, 1))
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end
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acc = vec2_scale(vec2_normalize(acc), speed * dt)
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self.velocity = vec2_add(self.velocity, acc)
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self.position = vec2_add(self.position, self.velocity)
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self.velocity = vec2_scale(self.velocity, 1 - friction)
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-- print(vec2_length(self.velocity))
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end
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function love.load()
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Player:init()
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end
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function love.update(dt)
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Player:update(dt)
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end
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function love.draw()
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love.graphics.draw(Player.sprite, Player.position().x, Player.position().y)
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end
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function love.conf(t)
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t.console = true
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end |