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/*******************************************************************************************
*
* raylib [core] example - Texture loading and drawing a part defined by a rectangle (adapted for HTML5 platform)
*
* This example has been created using raylib 1.3 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2015 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
#define MAX_FRAME_SPEED 15
#define MIN_FRAME_SPEED 1
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
Texture2D scarfy;
Vector2 position;
Rectangle frameRec;
int currentFrame = 0;
int framesCounter = 0;
int framesSpeed = 8; // Number of spritesheet frames shown by second
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Main Enry Point
//----------------------------------------------------------------------------------
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(screenWidth, screenHeight, "raylib [texture] example - texture rectangle");
scarfy = LoadTexture("resources/scarfy.png"); // Texture loading
position = (Vector2){ 350.0f, 280.0f };
// NOTE: On PLATFORM_WEB, NPOT textures support is limited
frameRec = (Rectangle){ 0, 0, scarfy.width/6, scarfy.height };
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 0, 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(scarfy); // Texture unloading
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// Update
//----------------------------------------------------------------------------------
framesCounter++;
if (framesCounter >= (60/framesSpeed))
{
framesCounter = 0;
currentFrame++;
if (currentFrame > 5) currentFrame = 0;
frameRec.x = currentFrame*scarfy.width/6;
}
if (IsKeyPressed(KEY_RIGHT)) framesSpeed++;
else if (IsKeyPressed(KEY_LEFT)) framesSpeed--;
if (framesSpeed > MAX_FRAME_SPEED) framesSpeed = MAX_FRAME_SPEED;
else if (framesSpeed < MIN_FRAME_SPEED) framesSpeed = MIN_FRAME_SPEED;
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawTexture(scarfy, 15, 40, WHITE);
DrawRectangleLines(15, 40, scarfy.width, scarfy.height, LIME);
DrawRectangleLines(15 + frameRec.x, 40 + frameRec.y, frameRec.width, frameRec.height, RED);
DrawText("FRAME SPEED: ", 165, 210, 10, DARKGRAY);
DrawText(FormatText("%02i FPS", framesSpeed), 575, 210, 10, DARKGRAY);
DrawText("PRESS RIGHT/LEFT KEYS to CHANGE SPEED!", 290, 240, 10, DARKGRAY);
for (int i = 0; i < MAX_FRAME_SPEED; i++)
{
if (i < framesSpeed) DrawRectangle(250 + 21*i, 205, 20, 20, RED);
DrawRectangleLines(250 + 21*i, 205, 20, 20, MAROON);
}
DrawTextureRec(scarfy, frameRec, position, WHITE); // Draw part of the texture
DrawText("(c) Scarfy sprite by Eiden Marsal", screenWidth - 200, screenHeight - 20, 10, GRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
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