jmiskovic

-- require this file to have reduced input lag and game logic that runs consistently
-- inspired by https://gafferongames.com/post/fix_your_timestep/
-- note: this decouples update() from draw(); update() can run multiple times per frame

local m = {}

m.update_delta = 1 / 60

function lovr.run()
  if lovr.timer then lovr.timer.step() end

jmiskovic

-- https://cargocollective.com/sagejenson/physarum
-- also [Coding Adventure: Ant and Slime Simulations](https://www.youtube.com/watch?v=X-iSQQgOd1A)

-- "agents" move around and leave behind a trail
-- they also detect others' trail and steer towards it
local m = {}

local agent_count = 1e4
local iterations_per_frame = 3

jmiskovic

#!/bin/bash

# Measures input lag of an application that draws a blue circle on the last known cursor location
# automates cursor motion for consistency; takes a screenshot and measures distance; averages over N runs

CURSOR_COLOR="#7c7c7c"  # set this to your system cursor primary color
CIRCLE_COLOR="#0000ff"  # the measured app should draw a circle of this color
TESTS_N=50

get_window_info() {

jmiskovic

local cam = require'cam'  -- https://github.com/jmiskovic/lovr-cam

local player_pos = Vec3()
local player_vel = Vec3(0, 0, -0.01)


local function getWorldFromScreen(pass)
  local w, h = pass:getDimensions()
  local clip_from_screen = mat4(-1, -1, 0):scale(2 / w, 2 / h, 1)
  local view_pose = mat4(pass:getViewPose(1))

jmiskovic

-- directional light shadow mapping for lovr 0.18 (currenly on post 0.17.1 dev branch)
local m = {}

m.near = 0.01
m.far = 500
m.orthographic_span = 40
m.perspective_fov = 90

m.view_pose = lovr.math.newMat4()
  :lookAt(

jmiskovic

-- manages "stages" with a stack interface
-- stage is Lua module with callbacks (load, update, draw, keypress...)
-- only single stage is active, one on top of the stack
-- after push and pop operation another stage takes over the callbacks
-- example stack: os > main_menu > level_selection > game_play > overlay_menu
-- example usage:
--   local stagestack = require'stagestack'
--   stagestack.push(require'main_menu')
local m = {}

jmiskovic

-- Creates a few hundred colliders which can be dragged around with right mouse button
-- Uses phywire.lua from https://github.com/jmiskovic/lovr-phywire

local phywire = require'phywire'

local world = lovr.physics.newWorld(0,0,0, false)
world:setLinearDamping(0.1)
world:setAngularDamping(0.1)

local mouse_collider = world:newSphereCollider(0,0,0, 0.001)

jmiskovic

--[[ Point light shaddow mapping (VSM Fixed)
-- usage snippets
local point_light = require('point_light')
point_light.load(1024, vec3(0, 1, 0))  -- depth texture resolution & light position

-- in lovr.update(dt), or at start of lovr.draw(pass)
  local pass = point_light.getPass()
  -- ... draw the scene using this pass ...
  lovr.graphics.submit(pass)
    -- if using within draw(), submit it together with main pass

jmiskovic

-- LOVR demo: Creates a few hundred colliders and allows to drag them around using the right mouse button
--  Dependencies:
-- lovr-mouse.lua from https://github.com/bjornbytes/lovr-mouse/
-- mousearm.lua from https://github.com/jmiskovic/lovr-mousearm
-- phywire.lua from https://github.com/jmiskovic/lovr-phywire

local mousearm = require'mousearm'
local phywire = require'phywire'

local world = lovr.physics.newWorld(0,0,0, false)

jmiskovic

local shh = require'shh'  -- grab from https://github.com/bjornbytes/shh

-- a newer version of skybox might be available https://github.com/jmiskovic/lovr-atmo
local skybox = {}
skybox.__index = skybox

local cubemap_transforms = {
  Mat4():lookAt(vec3(0, 0, 0), vec3( 1, 0, 0), vec3(0, 1, 0)),
  Mat4():lookAt(vec3(0, 0, 0), vec3(-1, 0, 0), vec3(0, 1, 0)),
  Mat4():lookAt(vec3(0, 0, 0), vec3( 0, 1, 0), vec3(0, 0,-1)),