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77 行
3.2 KiB
77 行
3.2 KiB
/*******************************************************************************************
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*
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* raylib [core] example - World to screen
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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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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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InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d camera free");
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// Define the camera to look into our 3d world
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Camera camera = {{ 0.0f, 10.0f, 10.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f };
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Vector3 cubePosition = { 0.0f, 0.0f, 0.0f };
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Vector2 cubeScreenPosition;
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SetCameraMode(CAMERA_FREE); // Set a free camera mode
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SetCameraPosition(camera.position); // Set internal camera position to match our camera position
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SetCameraTarget(camera.target); // Set internal camera target to match our camera target
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SetCameraFovy(camera.fovy); // Set internal camera field-of-view Y
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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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// Update
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//----------------------------------------------------------------------------------
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UpdateCamera(&camera); // Update internal camera and our camera
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// Calculate cube screen space position (with a little offset to be in top)
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cubeScreenPosition = GetWorldToScreen((Vector3){cubePosition.x, cubePosition.y + 2.5f, cubePosition.z}, camera);
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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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Begin3dMode(camera);
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DrawCube(cubePosition, 2.0f, 2.0f, 2.0f, RED);
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DrawCubeWires(cubePosition, 2.0f, 2.0f, 2.0f, MAROON);
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DrawGrid(10, 1.0f);
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End3dMode();
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DrawText("Enemy: 100 / 100", cubeScreenPosition.x - MeasureText("Enemy: 100 / 100", 20) / 2, cubeScreenPosition.y, 20, BLACK);
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DrawText("Text is always on top of the cube", (screenWidth - MeasureText("Text is always on top of the cube", 20)) / 2, 25, 20, GRAY);
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EndDrawing();
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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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return 0;
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}
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