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+/*******************************************************************************************
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+*
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+* raylib example 06b - raylib Logo Animation
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+*
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+* This example has been created using raylib 1.0 (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) 2013 Ramon Santamaria (Ray San - [email protected])
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+*
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+********************************************************************************************/
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+
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+#include "raylib.h"
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+
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+// Useful function for fade-ins and fade-outs
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+Color Fade(Color col, float alpha)
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+{
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+ return (Color){col.r, col.g, col.b, col.a*alpha};
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+}
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+
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+int main()
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+{
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+ // Initialization
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+ //--------------------------------------------------------------------------------------
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+ int screenWidth = 800;
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+ int screenHeight = 450;
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+
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+ int logoPositionX = screenWidth/2 - 128;
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+ int logoPositionY = screenHeight/2 - 128;
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+
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+ int framesCounter = 0;
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+ int lettersCount = 0;
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+
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+ int topSideRecWidth = 16;
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+ int leftSideRecHeight = 16;
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+
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+ int bottomSideRecWidth = 16;
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+ int rightSideRecHeight = 16;
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+
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+ char raylib[8] = " "; // raylib text array, max 8 letters
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+
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+ int state = 0; // Tracking animation states (State Machine)
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+
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+ float alpha = 1.0;
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+
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+ InitWindow(screenWidth, screenHeight, "raylib example 06b - raylib logo animation");
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+
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+ SetTargetFPS(60);
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+ //--------------------------------------------------------------------------------------
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+
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+ // Main game loop
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+ while (!WindowShouldClose()) // Detect window close button or ESC key
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+ {
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+ // Update
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+ //----------------------------------------------------------------------------------
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+ if (state == 0) // State 0: Small box blinking
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+ {
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+ framesCounter++;
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+
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+ if (framesCounter == 120)
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+ {
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+ state = 1;
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+ framesCounter = 0; // Reset counter... will be used later...
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+ }
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+ }
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+ else if (state == 1) // State 1: Top and left bars growing
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+ {
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+ topSideRecWidth += 4;
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+ leftSideRecHeight += 4;
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+
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+ if (topSideRecWidth == 256) state = 2;
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+ }
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+ else if (state == 2) // State 2: Bottom and right bars growing
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+ {
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+ bottomSideRecWidth += 4;
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+ rightSideRecHeight += 4;
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+
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+ if (bottomSideRecWidth == 256) state = 3;
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+ }
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+ else if (state == 3) // State 3: Letters appearing (one by one)
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+ {
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+ framesCounter++;
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+
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+ if (framesCounter/12) // Every 12 frames, one more letter!
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+ {
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+ lettersCount++;
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+ framesCounter = 0;
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+ }
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+
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+ switch (lettersCount)
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+ {
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+ case 1: raylib[0] = 'r'; break;
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+ case 2: raylib[1] = 'a'; break;
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+ case 3: raylib[2] = 'y'; break;
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+ case 4: raylib[3] = 'l'; break;
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+ case 5: raylib[4] = 'i'; break;
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+ case 6: raylib[5] = 'b'; break;
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+ default: break;
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+ }
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+
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+ if (lettersCount >= 10) // When all letters have appeared, just fade out everything
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+ {
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+ alpha -= 0.02;
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+
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+ if (alpha <= 0) alpha = 0;
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+ }
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+ }
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+ //----------------------------------------------------------------------------------
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+
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+ // Draw
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+ //----------------------------------------------------------------------------------
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+ BeginDrawing();
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+
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+ ClearBackground(RAYWHITE);
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+
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+ if (state == 0)
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+ {
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+ if ((framesCounter/15)%2) DrawRectangle(logoPositionX, logoPositionY, 16, 16, BLACK);
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+ }
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+ else if (state == 1)
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+ {
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+ DrawRectangle(logoPositionX, logoPositionY, topSideRecWidth, 16, BLACK);
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+ DrawRectangle(logoPositionX, logoPositionY, 16, leftSideRecHeight, BLACK);
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+ }
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+ else if (state == 2)
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+ {
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+ DrawRectangle(logoPositionX, logoPositionY, topSideRecWidth, 16, BLACK);
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+ DrawRectangle(logoPositionX, logoPositionY, 16, leftSideRecHeight, BLACK);
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+
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+ DrawRectangle(logoPositionX + 240, logoPositionY, 16, rightSideRecHeight, BLACK);
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+ DrawRectangle(logoPositionX, logoPositionY + 240, bottomSideRecWidth, 16, BLACK);
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+ }
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+ else if (state == 3)
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+ {
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+ DrawRectangle(logoPositionX, logoPositionY, 256, 256, Fade(BLACK, alpha));
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+ DrawRectangle(screenWidth/2 - 112, screenHeight/2 - 112, 224, 224, Fade(RAYWHITE, alpha));
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+
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+ DrawText(raylib, 356, 273, 50, Fade(BLACK, alpha));
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+ }
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+
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+ EndDrawing();
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+ //----------------------------------------------------------------------------------
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+ }
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+
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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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+
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+ return 0;
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+}
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