mirror of https://github.com/raysan5/raylib
85 lines
3.6 KiB
C
85 lines
3.6 KiB
C
/*******************************************************************************************
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*
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* raylib [core] example - World to screen
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*
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* Example originally created with raylib 1.3, last time updated with raylib 1.4
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*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* Copyright (c) 2015-2024 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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//------------------------------------------------------------------------------------
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// Program main entry point
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//------------------------------------------------------------------------------------
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int main(void)
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
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const int screenHeight = 450;
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InitWindow(screenWidth, screenHeight, "raylib [core] example - core world screen");
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// Define the camera to look into our 3d world
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Camera camera = { 0 };
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camera.position = (Vector3){ 10.0f, 10.0f, 10.0f }; // Camera position
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camera.target = (Vector3){ 0.0f, 0.0f, 0.0f }; // Camera looking at point
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camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target)
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camera.fovy = 45.0f; // Camera field-of-view Y
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camera.projection = CAMERA_PERSPECTIVE; // Camera projection type
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Vector3 cubePosition = { 0.0f, 0.0f, 0.0f };
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Vector2 cubeScreenPosition = { 0.0f, 0.0f };
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DisableCursor(); // Limit cursor to relative movement inside the window
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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, CAMERA_THIRD_PERSON);
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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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BeginMode3D(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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EndMode3D();
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DrawText("Enemy: 100 / 100", (int)cubeScreenPosition.x - MeasureText("Enemy: 100/100", 20)/2, (int)cubeScreenPosition.y, 20, BLACK);
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DrawText(TextFormat("Cube position in screen space coordinates: [%i, %i]", (int)cubeScreenPosition.x, (int)cubeScreenPosition.y), 10, 10, 20, LIME);
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DrawText("Text 2d should be always on top of the cube", 10, 40, 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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} |