Add raylib lua examples

examples/models_cubicmap.lua

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+-------------------------------------------------------------------------------------------
+--
+--  raylib [models] example - Cubicmap loading and drawing
+--
+--  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 = 800
+local screenHeight = 450
+
+InitWindow(screenWidth, screenHeight, "raylib [models] example - cubesmap loading and drawing")
+
+-- Define the camera to look into our 3d world
+local camera = Camera(Vector3(16.0, 14.0, 16.0), Vector3(0.0, 0.0, 0.0), Vector3(0.0, 1.0, 0.0), 45.0)
+
+local image = LoadImage("resources/cubicmap.png")      -- Load cubicmap image (RAM)
+local cubicmap = LoadTextureFromImage(image)           -- Convert image to texture to display (VRAM)
+local map = LoadCubicmap(image)                        -- Load cubicmap model (generate model from image)
+
+-- NOTE: By default each cube is mapped to one part of texture atlas
+local texture = LoadTexture("resources/cubicmap_atlas.png")    -- Load map texture
+map.material.texDiffuse = texture                      -- Set map diffuse texture
+
+local mapPosition = Vector3(-16.0, 0.0, -8.0)          -- Set model position
+
+UnloadImage(image)     -- Unload cubesmap image from RAM, already uploaded to VRAM
+
+SetCameraMode(CAMERA.ORBITAL)      -- Set an orbital camera mode
+SetCameraPosition(camera.position) -- Set internal camera position to match our custom camera position
+SetCameraFovy(camera.fovy)         -- Set internal camera field-of-view Y
+
+SetTargetFPS(60)                   -- Set our game to run at 60 frames-per-second
+-------------------------------------------------------------------------------------------
+
+-- Main game loop
+while not WindowShouldClose() do            -- Detect window close button or ESC key
+    -- Update
+    ---------------------------------------------------------------------------------------
+    UpdateCamera(&camera)          -- Update internal camera and our camera
+    ---------------------------------------------------------------------------------------
+
+    -- Draw
+    ---------------------------------------------------------------------------------------
+    BeginDrawing()
+
+        ClearBackground(RAYWHITE)
+
+        Begin3dMode(camera)
+
+            DrawModel(map, mapPosition, 1.0, WHITE)
+
+        End3dMode()
+        
+        DrawTextureEx(cubicmap, (Vector2){ screenWidth - cubicmap.width*4 - 20, 20 }, 0.0, 4.0, WHITE)
+        DrawRectangleLines(screenWidth - cubicmap.width*4 - 20, 20, cubicmap.width*4, cubicmap.height*4, GREEN)
+        
+        DrawText("cubicmap image used to", 658, 90, 10, GRAY)
+        DrawText("generate map 3d model", 658, 104, 10, GRAY)
+
+        DrawFPS(10, 10)
+
+    EndDrawing()
+    ---------------------------------------------------------------------------------------
+end
+
+-- De-Initialization
+-------------------------------------------------------------------------------------------
+UnloadTexture(cubicmap)    -- Unload cubicmap texture
+UnloadTexture(texture)     -- Unload map texture
+UnloadModel(map)           -- Unload map model
+
+CloseWindow()              -- Close window and OpenGL context
+-------------------------------------------------------------------------------------------