113 行
4.2 KiB
113 行
4.2 KiB
/*******************************************************************************************
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*
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* raylib [core] example - Texture loading and drawing a part defined by a rectangle (adapted for HTML5 platform)
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*
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* This example has been created using raylib 1.3 (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) 2015 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#if defined(PLATFORM_WEB)
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#include <emscripten/emscripten.h>
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#endif
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//----------------------------------------------------------------------------------
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// Global Variables Definition
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//----------------------------------------------------------------------------------
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int screenWidth = 800;
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int screenHeight = 450;
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// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
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Texture2D guybrush;
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Vector2 position;
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Rectangle frameRec;
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int currentFrame = 0;
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//----------------------------------------------------------------------------------
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// Module Functions Declaration
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//----------------------------------------------------------------------------------
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void UpdateDrawFrame(void); // Update and Draw one frame
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//----------------------------------------------------------------------------------
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// Main Enry Point
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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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InitWindow(screenWidth, screenHeight, "raylib [texture] example - texture rectangle");
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guybrush = LoadTexture("resources/guybrush.png"); // Texture loading
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position = (Vector2){ 350.0f, 240.0f };
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// NOTE: On PLATFORM_WEB, NPOT textures support is limited
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frameRec = (Rectangle){ 0, 0, guybrush.width/7, guybrush.height };
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#if defined(PLATFORM_WEB)
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emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
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#else
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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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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UpdateDrawFrame();
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}
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#endif
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// De-Initialization
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//--------------------------------------------------------------------------------------
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UnloadTexture(guybrush); // Texture unloading
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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//----------------------------------------------------------------------------------
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// Module Functions Definition
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//----------------------------------------------------------------------------------
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void UpdateDrawFrame(void)
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{
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// Update
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//----------------------------------------------------------------------------------
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if (IsKeyPressed(KEY_RIGHT))
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{
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currentFrame++;
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if (currentFrame > 6) currentFrame = 0;
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frameRec.x = currentFrame*guybrush.width/7;
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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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ClearBackground(RAYWHITE);
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DrawTexture(guybrush, 35, 40, WHITE);
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DrawRectangleLines(35, 40, guybrush.width, guybrush.height, LIME);
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DrawTextureRec(guybrush, frameRec, position, WHITE); // Draw part of the texture
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DrawRectangleLines(35 + frameRec.x, 40 + frameRec.y, frameRec.width, frameRec.height, RED);
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DrawText("PRESS RIGHT KEY to", 540, 310, 10, GRAY);
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DrawText("CHANGE DRAWING RECTANGLE", 520, 330, 10, GRAY);
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DrawText("Guybrush Ulysses Threepwood,", 100, 300, 10, GRAY);
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DrawText("main character of the Monkey Island series", 80, 320, 10, GRAY);
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DrawText("of computer adventure games by LucasArts.", 80, 340, 10, GRAY);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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