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/*******************************************************************************************
*
* raylib [textures] example - sprite button
*
* 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) 2019 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
#define NUM_FRAMES 3 // Number of frames (rectangles) for the button sprite texture
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
Sound fxButton = { 0 };
Texture2D button = { 0 };
// Define frame rectangle for drawing
int frameHeight = 0;
Rectangle sourceRec = { 0 };
// Define button bounds on screen
Rectangle btnBounds = { 0 };
int btnState = 0; // Button state: 0-NORMAL, 1-MOUSE_HOVER, 2-PRESSED
bool btnAction = false; // Button action should be activated
Vector2 mousePoint = { 0.0f, 0.0f };
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Program Main Entry Point
//----------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(screenWidth, screenHeight, "raylib [textures] example - sprite button");
InitAudioDevice(); // Initialize audio device
fxButton = LoadSound("resources/buttonfx.wav"); // Load button sound
button = LoadTexture("resources/button.png"); // Load button texture
// Define frame rectangle for drawing
frameHeight = button.height/NUM_FRAMES;
sourceRec = (Rectangle){ 0, 0, button.width, frameHeight };
// Define button bounds on screen
btnBounds = (Rectangle){ screenWidth/2 - button.width/2, screenHeight/2 - button.height/NUM_FRAMES/2, button.width, frameHeight };
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 60, 1);
#else
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
UpdateDrawFrame();
}
#endif
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadTexture(button); // Unload button texture
UnloadSound(fxButton); // Unload sound
CloseAudioDevice(); // Close audio device
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// Update
//----------------------------------------------------------------------------------
mousePoint = GetMousePosition();
btnAction = false;
// Check button state
if (CheckCollisionPointRec(mousePoint, btnBounds))
{
if (IsMouseButtonDown(MOUSE_LEFT_BUTTON)) btnState = 2;
else btnState = 1;
if (IsMouseButtonReleased(MOUSE_LEFT_BUTTON)) btnAction = true;
}
else btnState = 0;
if (btnAction)
{
PlaySound(fxButton);
// TODO: Any desired action
}
// Calculate button frame rectangle to draw depending on button state
sourceRec.y = btnState*frameHeight;
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawTextureRec(button, sourceRec, (Vector2){ btnBounds.x, btnBounds.y }, WHITE); // Draw button frame
EndDrawing();
//----------------------------------------------------------------------------------
}
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