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Update/merge examples back into main repo (#192)

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Chris Dill
2023-08-25 08:08:32 +01:00
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commit bcdf8cec5b
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Examples/Core/LoadingThread.cs Normal file
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/*******************************************************************************************
*
* raylib example - loading thread
*
* This example has been created using raylib 2.5 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2014-2019 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
using System.Threading;
using static Raylib_cs.Raylib;
using static Raylib_cs.Color;
using static Raylib_cs.KeyboardKey;
namespace Examples.Core;
enum State
{
STATE_WAITING,
STATE_LOADING,
STATE_FINISHED
}
public class LoadingThread
{
// C# bool is atomic. Used for synchronization
// https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/language-specification/variables#atomicity-of-variable-references
// Data Loaded completion indicator
static bool dataLoaded = false;
// Data progress accumulator
static int dataProgress = 0;
public static int Main()
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [core] example - loading thread");
// Loading data thread id
Thread thread = new(new ThreadStart(LoadDataThread));
State state = State.STATE_WAITING;
int framesCounter = 0;
SetTargetFPS(60);
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
switch (state)
{
case State.STATE_WAITING:
{
if (IsKeyPressed(KEY_ENTER))
{
thread.Start();
//int error = pthread_create(ref, NULL, ref, NULL);
//if (error != 0) TraceLog(TraceLogLevel.LOG_ERROR, "Error creating loading thread");
//else TraceLog(TraceLogLevel.LOG_INFO, "Loading thread initialized successfully");
state = State.STATE_LOADING;
}
}
break;
case State.STATE_LOADING:
{
framesCounter++;
if (dataLoaded)
{
framesCounter = 0;
state = State.STATE_FINISHED;
}
}
break;
case State.STATE_FINISHED:
{
if (IsKeyPressed(KEY_ENTER))
{
// Reset everything to launch again
// atomic_store(ref, false);
dataProgress = 0;
state = State.STATE_WAITING;
}
}
break;
default: break;
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
switch (state)
{
case State.STATE_WAITING:
DrawText("PRESS ENTER to START LOADING DATA", 150, 170, 20, DARKGRAY);
break;
case State.STATE_LOADING:
{
DrawRectangle(150, 200, dataProgress, 60, SKYBLUE);
if ((framesCounter / 15) % 2 == 0) DrawText("LOADING DATA...", 240, 210, 40, DARKBLUE);
}
break;
case State.STATE_FINISHED:
{
DrawRectangle(150, 200, 500, 60, LIME);
DrawText("DATA LOADED!", 250, 210, 40, GREEN);
}
break;
default: break;
}
DrawRectangleLines(150, 200, 500, 60, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
// Loading data thread function definition
static void LoadDataThread()
{
int timeCounter = 0; // Time counted in ms
// clock_t prevTime = clock(); // Previous time
// We simulate data loading with a time counter for 5 seconds
while (timeCounter < 5000)
{
//clock_t currentTime = clock() - prevTime;
//timeCounter = currentTime*1000/CLOCKS_PER_SEC;
timeCounter += 1;
// We accumulate time over a global variable to be used in
// main thread as a progress bar
dataProgress = timeCounter / 10;
}
// When data has finished loading, we set global variable
dataLoaded = true;
}
}