Add raylib lua examples

examples/core_oculus_rift.lua

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+-------------------------------------------------------------------------------------------
+--
+--  raylib [core] example - Oculus Rift CV1
+--
+--  NOTE: Example requires linkage with LibOVR
+--
+--  This example has been created using raylib 1.6 (www.raylib.com)
+--  raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+--
+--  Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
+--
+-------------------------------------------------------------------------------------------
+
+-- Initialization
+-------------------------------------------------------------------------------------------
+local screenWidth = 1080
+local screenHeight = 600
+
+-- NOTE: screenWidth/screenHeight should match VR device aspect ratio
+
+InitWindow(screenWidth, screenHeight, "raylib [core] example - oculus rift")
+
+-- NOTE: If device is not available, it fallbacks to default device (simulator)
+InitVrDevice(VrDevice.OCULUS_RIFT_CV1)      -- Init VR device (Oculus Rift CV1)
+
+-- Define the camera to look into our 3d world
+local camera = {}
+camera.position = Vector3(5.0, 5.0, 5.0)    -- Camera position
+camera.target = Vector3(0.0, 0.0, 0.0)      -- Camera looking at point
+camera.up = Vector3(0.0, 1.0, 0.0)          -- Camera up vector (rotation towards target)
+camera.fovy = 60.0                          -- Camera field-of-view Y
+
+local cubePosition = Vector3(0.0, 0.0, 0.0)
+
+SetTargetFPS(90)                    -- Set our game to run at 90 frames-per-second
+----------------------------------------------------------------------------------------
+
+-- Main game loop
+while not WindowShouldClose() do    -- Detect window close button or ESC key
+    -- Update
+    ------------------------------------------------------------------------------------
+    UpdateVrTracking()
+    
+    if (IsKeyPressed(KEY.SPACE)) then ToggleVrMode() end
+    ------------------------------------------------------------------------------------
+
+    -- Draw
+    ------------------------------------------------------------------------------------
+    BeginDrawing()
+
+        ClearBackground(RAYWHITE)
+
+        Begin3dMode(camera)
+
+            DrawCube(cubePosition, 2.0, 2.0, 2.0, RED)
+            DrawCubeWires(cubePosition, 2.0, 2.0, 2.0, MAROON)
+
+            DrawGrid(10, 1.0)
+
+        End3dMode()
+
+        DrawFPS(10, 10)
+
+    EndDrawing()
+    ------------------------------------------------------------------------------------
+end
+
+-- De-Initialization
+----------------------------------------------------------------------------------------
+CloseVrDevice()        -- Close VR device
+
+CloseWindow()          -- Close window and OpenGL context
+----------------------------------------------------------------------------------------