71 lines
3.1 KiB
Lua
71 lines
3.1 KiB
Lua
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--
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-- raylib [textures] example - Texture source and destination rectangles
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--
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-- This example has been created using raylib 1.6 (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) 2014-2016 Ramon Santamaria (@raysan5)
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--
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-------------------------------------------------------------------------------------------
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-- Initialization
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-------------------------------------------------------------------------------------------
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local screenWidth = 800
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local screenHeight = 450
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InitWindow(screenWidth, screenHeight, "raylib [textures] examples - texture source and destination rectangles")
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-- NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
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local guybrush = LoadTexture("resources/guybrush.png") -- Texture loading
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local frameWidth = guybrush.width/7
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local frameHeight = guybrush.height
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-- NOTE: Source rectangle (part of the texture to use for drawing)
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local sourceRec = Rectangle(0, 0, frameWidth, frameHeight)
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-- NOTE: Destination rectangle (screen rectangle where drawing part of texture)
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local destRec = Rectangle(screenWidth/2, screenHeight/2, frameWidth*2, frameHeight*2)
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-- NOTE: Origin of the texture (rotation/scale point), it's relative to destination rectangle size
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local origin = Vector2(frameWidth, frameHeight)
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local rotation = 0
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SetTargetFPS(60)
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-------------------------------------------------------------------------------------------
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-- Main game loop
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while not WindowShouldClose() do -- Detect window close button or ESC key
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-- Update
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---------------------------------------------------------------------------------------
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rotation = rotation + 1
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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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-- NOTE: Using DrawTexturePro() we can easily rotate and scale the part of the texture we draw
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-- sourceRec defines the part of the texture we use for drawing
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-- destRec defines the rectangle where our texture part will fit (scaling it to fit)
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-- origin defines the point of the texture used as reference for rotation and scaling
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-- rotation defines the texture rotation (using origin as rotation point)
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DrawTexturePro(guybrush, sourceRec, destRec, origin, rotation, WHITE)
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DrawLine(destRec.x, 0, destRec.x, screenHeight, GRAY)
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DrawLine(0, destRec.y, screenWidth, destRec.y, GRAY)
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EndDrawing()
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---------------------------------------------------------------------------------------
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end
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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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