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/*******************************************************************************************
*
* raylib [shapes] example - fancy clock using basic shapes
*
* Example complexity rating: [★★☆☆] 2/4
*
* Example originally created with raylib 5.5, last time updated with raylib 5.5
*
* Example contributed by Hamza RAHAL (@hmz-rhl) and reviewed by Ramon Santamaria (@raysan5)
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2025 Hamza RAHAL (@hmz-rhl)
*
********************************************************************************************/
#include "raylib.h"
#include <math.h> // Required for: cosf(), sinf()
#include <time.h> // Required for: time(), localtime()
#define DIGIT_SIZE 30
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
typedef enum {
MODE_NORMAL = 0,
MODE_HANDS_FREE,
} ClockMode;
typedef struct {
int value;
Vector2 origin;
float angle;
int length;
int thickness;
Color color;
} ClockHand;
typedef struct {
ClockMode mode;
ClockHand second;
ClockHand minute;
ClockHand hour;
} Clock;
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
static void UpdateClock(Clock *clock); // Update clock time
static void DrawClock(Clock clock, Vector2 centerPos); // Draw clock at desired position
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [shapes] example - digital clock");
// Initialize clock
Clock myClock = {
.mode = MODE_NORMAL,
.second.angle = 45,
.second.length = 140,
.second.thickness = 3,
.second.color = BEIGE,
.minute.angle = 10,
.minute.length = 130,
.minute.thickness = 7,
.minute.color = DARKGRAY,
.hour.angle = 0,
.hour.length = 100,
.hour.thickness = 7,
.hour.color = BLACK,
};
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
if (IsKeyPressed(KEY_SPACE))
{
if (myClock.mode == MODE_HANDS_FREE) myClock.mode = MODE_NORMAL;
else if (myClock.mode == MODE_NORMAL) myClock.mode = MODE_HANDS_FREE;
}
UpdateClock(&myClock);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawCircle(400, 225, 5, BLACK); // Clock center dot
DrawClock(myClock, (Vector2){ 400, 225 }); // Clock in selected mode
DrawText("Press [SPACE] to switch clock mode", 10, 10, 20, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
// Update clock time
static void UpdateClock(Clock *clock)
{
time_t rawtime;
struct tm * timeinfo;
time(&rawtime);
timeinfo = localtime(&rawtime);
// Updating time data
clock->second.value = timeinfo->tm_sec;
clock->minute.value = timeinfo->tm_min;
clock->hour.value = timeinfo->tm_hour;
clock->hour.angle = (timeinfo->tm_hour%12)*180.0/6.0f;
clock->hour.angle += (timeinfo->tm_min%60)*30/60.0f;
clock->hour.angle -= 90;
clock->minute.angle = (timeinfo->tm_min%60)*6.0f;
clock->minute.angle += (timeinfo->tm_sec%60)*6/60.0f;
clock->minute.angle -= 90;
clock->second.angle = (timeinfo->tm_sec%60)*6.0f;
clock->second.angle -= 90;
}
// Draw clock
static void DrawClock(Clock clock, Vector2 centerPosition)
{
if (clock.mode == MODE_HANDS_FREE)
{
DrawCircleLinesV(centerPosition, clock.minute.length, LIGHTGRAY);
DrawText(TextFormat("%i", clock.second.value), centerPosition.x + (clock.second.length - 10)*cosf(clock.second.angle*(float)(PI/180)) - DIGIT_SIZE/2, centerPosition.y + clock.second.length*sinf(clock.second.angle*(float)(PI/180)) - DIGIT_SIZE/2, DIGIT_SIZE, GRAY);
DrawText(TextFormat("%i", clock.minute.value), clock.minute.origin.x + clock.minute.length*cosf(clock.minute.angle*(float)(PI/180)) - DIGIT_SIZE/2, centerPosition.y + clock.minute.length*sinf(clock.minute.angle*(float)(PI/180)) - DIGIT_SIZE/2, DIGIT_SIZE, RED);
DrawText(TextFormat("%i", clock.hour.value), centerPosition.x + clock.hour.length*cosf(clock.hour.angle*(float)(PI/180)) - DIGIT_SIZE/2, centerPosition.y + clock.hour.length*sinf(clock.hour.angle*(float)(PI/180)) - DIGIT_SIZE/2, DIGIT_SIZE, GOLD);
}
else if (clock.mode == MODE_NORMAL)
{
// Draw hand seconds
DrawRectanglePro((Rectangle){ centerPosition.x, centerPosition.y, clock.second.length, clock.second.thickness },
(Vector2){ 0.0f, clock.second.thickness/2.0f }, clock.second.angle, clock.second.color);
// Draw hand minutes
DrawRectanglePro((Rectangle){ centerPosition.x, centerPosition.y, clock.minute.length, clock.minute.thickness },
(Vector2){ 0.0f, clock.minute.thickness/2.0f }, clock.minute.angle, clock.minute.color);
// Draw hand hours
DrawRectanglePro((Rectangle){ centerPosition.x, centerPosition.y, clock.hour.length, clock.hour.thickness },
(Vector2){ 0.0f, clock.hour.thickness/2.0f }, clock.hour.angle, clock.hour.color);
}
}