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-------------------------------------------------------------------------------------------
--
-- raylib [core] example - World to screen
--
-- 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 [core] example - 3d camera free")
-- Define the camera to look into our 3d world
local camera = Camera(Vector3(0.0, 10.0, 10.0), Vector3(0.0, 0.0, 0.0), Vector3(0.0, 1.0, 0.0), 45.0)
local cubePosition = Vector3(0.0, 0.0, 0.0)
local cubeScreenPosition = Vector2(0, 0)
SetCameraMode(CameraMode.FREE) -- Set a free camera mode
SetCameraPosition(camera.position) -- Set internal camera position to match our camera position
SetCameraTarget(camera.target) -- Set internal camera target to match our camera target
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
------------------------------------------------------------------------------------
camera = UpdateCamera(camera) -- Update internal camera and our camera
-- Calculate cube screen space position (with a little offset to be in top)
cubeScreenPosition = GetWorldToScreen(Vector3(cubePosition.x, cubePosition.y + 2.5, cubePosition.z), camera)
------------------------------------------------------------------------------------
-- 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()
DrawText("Enemy: 100 / 100", cubeScreenPosition.x//1 - MeasureText("Enemy: 100 / 100", 20)//2, cubeScreenPosition.y//1, 20, BLACK)
DrawText("Text is always on top of the cube", (screenWidth - MeasureText("Text is always on top of the cube", 20))//2, 25, 20, GRAY)
EndDrawing()
------------------------------------------------------------------------------------
end
-- De-Initialization
----------------------------------------------------------------------------------------
CloseWindow() -- Close window and OpenGL context
----------------------------------------------------------------------------------------
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