Physics Pointer example;

examples/Interaction/Physics_Pointer/main.lua

@@ -0,0 +1,60 @@
+local random = lovr.math.random
+local boxes = {}
+local selectedBox = nil
+local hitpoint = lovr.math.newVec3()
+local red = { 1, .5, .5 }
+local green = { .5, 1, .5 }
+
+function lovr.load()
+  lovr.graphics.setBackgroundColor(.2, .2, .22)
+  world = lovr.physics.newWorld(0, 0, 0)
+
+  -- Make a bunch of random spinning boxes XD
+  for x = -3, 3 do
+    for z = 1, 10 do
+      local y = .5 + lovr.math.randomNormal(.1)
+      local box = world:newBoxCollider(x, y, -z, .28)
+      box:setOrientation(random(2 * math.pi), random(), random(), random())
+      box:setAngularVelocity(random(), random(), random())
+      table.insert(boxes, box)
+    end
+  end
+end
+
+function lovr.update(dt)
+  selectedBox = nil
+
+  world:update(dt)
+
+  local ox, oy, oz = lovr.headset.getPosition('hand/right')
+  local dx, dy, dz = quat(lovr.headset.getOrientation('hand/right')):direction():mul(50):unpack()
+  local closest = math.huge
+  world:raycast(ox, oy, oz, ox + dx, oy + dy, oz + dz, function(shape, x, y, z)
+    local distance = vec3(x, y, z):distance(vec3(ox, oy, oz))
+    if distance < closest then
+      selectedBox = shape:getCollider()
+      hitpoint:set(x, y, z)
+      closest = distance
+    end
+  end)
+end
+
+function lovr.draw()
+  -- Boxes
+  for i, box in ipairs(boxes) do
+    lovr.graphics.setColor(box == selectedBox and green or red)
+    lovr.graphics.cube('fill', vec3(box:getPosition()), .28, quat(box:getOrientation()))
+  end
+
+  -- Dot
+  if selectedBox then
+    lovr.graphics.setColor(0, 0, 1)
+    lovr.graphics.sphere(hitpoint, .01)
+  end
+
+  -- Laser pointer
+  local hand = vec3(lovr.headset.getPosition('hand/right'))
+  local direction = quat(lovr.headset.getOrientation('hand/right')):direction()
+  lovr.graphics.setColor(1, 1, 1)
+  lovr.graphics.line(hand, selectedBox and hitpoint or (hand + direction * 50))
+end

examples/init.lua

@@ -6,6 +6,7 @@ return {
   'Intro/Tracked_Hands',
   'Interaction/Pointer',
   'Interaction/Pointer_UI',
+  'Interaction/Physics_Pointer',
   'Custom_Mesh',
   'Animation',
   'Physics',