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96 lines
3.8 KiB
96 lines
3.8 KiB
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--
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-- raylib [core] example - Picking in 3d mode
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--
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-- This example has been created using raylib 1.6 (www.raylib.com)
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-- raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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--
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-- Copyright (c) 2014-2016 Ramon Santamaria (@raysan5)
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--
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-------------------------------------------------------------------------------------------
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-- Initialization
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local screenWidth = 800
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local screenHeight = 450
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InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d picking")
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-- Define the camera to look into our 3d world
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local camera = {}
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camera.position = Vector3(0.0, 10.0, 10.0) -- Camera position
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camera.target = Vector3(0.0, 0.0, 0.0) -- Camera looking at point
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camera.up = Vector3(0.0, 1.0, 0.0) -- Camera up vector (rotation towards target)
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camera.fovy = 45.0 -- Camera field-of-view Y
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local cubePosition = Vector3(0.0, 1.0, 0.0)
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local cubeSize = Vector3(2.0, 2.0, 2.0)
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local ray = Ray(Vector3(0, 0, 0), Vector3(0, 0, 0)) -- Picking line ray
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local collision = false
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SetCameraMode(camera, CameraMode.FREE) -- Set a free camera mode
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SetTargetFPS(60) -- Set our game to run at 60 frames-per-second
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-------------------------------------------------------------------------------------------
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-- Main game loop
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while not WindowShouldClose() do -- Detect window close button or ESC key
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-- Update
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---------------------------------------------------------------------------------------
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camera = UpdateCamera(camera) -- Update camera
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if (IsMouseButtonPressed(MOUSE.LEFT_BUTTON)) then
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-- NOTE: This function is NOT WORKING properly!
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ray = GetMouseRay(GetMousePosition(), camera)
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-- Check collision between ray and box
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collision = CheckCollisionRayBox(ray,
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BoundingBox(Vector3(cubePosition.x - cubeSize.x/2, cubePosition.y - cubeSize.y/2, cubePosition.z - cubeSize.z/2),
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Vector3(cubePosition.x + cubeSize.x/2, cubePosition.y + cubeSize.y/2, cubePosition.z + cubeSize.z/2)))
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--print("collision check:", collision)
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end
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---------------------------------------------------------------------------------------
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-- Draw
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---------------------------------------------------------------------------------------
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BeginDrawing()
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ClearBackground(RAYWHITE)
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Begin3dMode(camera)
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if (collision) then
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DrawCube(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, RED)
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DrawCubeWires(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, MAROON)
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DrawCubeWires(cubePosition, cubeSize.x + 0.2, cubeSize.y + 0.2, cubeSize.z + 0.2, GREEN)
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else
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DrawCube(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, GRAY)
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DrawCubeWires(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, DARKGRAY)
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end
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DrawRay(ray, MAROON)
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DrawGrid(10, 1.0)
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End3dMode()
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DrawText("Try selecting the box with mouse!", 240, 10, 20, DARKGRAY)
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if (collision) then
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DrawText("BOX SELECTED", (screenWidth - MeasureText("BOX SELECTED", 30))/2, screenHeight*0.1, 30, GREEN)
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end
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DrawFPS(10, 10)
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EndDrawing()
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---------------------------------------------------------------------------------------
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end
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-- De-Initialization
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-------------------------------------------------------------------------------------------
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CloseWindow() -- Close window and OpenGL context
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-------------------------------------------------------------------------------------------
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