Merge remote-tracking branch 'refs/remotes/raysan5/develop' into develop

1 files changed, 102 insertions, 0 deletions

diff --git a/docs/examples/web/core_world_screen.c b/docs/examples/web/core_world_screen.c
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+++ b/docs/examples/web/core_world_screen.c
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+/*******************************************************************************************
+*
+*   raylib [core] example - World to screen (adapted for HTML5 platform)
+*
+*   This example has been created using raylib 1.3 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#if defined(PLATFORM_WEB)
+    #include <emscripten/emscripten.h>
+#endif
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+int screenWidth = 800;
+int screenHeight = 450;
+
+// Define the camera to look into our 3d world
+Camera camera = {{ 0.0f, 10.0f, 10.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }};
+
+Vector3 cubePosition = { 0.0f, 0.0f, 0.0f };
+
+Vector2 cubeScreenPosition;
+
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+void UpdateDrawFrame(void);     // Update and Draw one frame
+
+//----------------------------------------------------------------------------------
+// Main Enry Point
+//----------------------------------------------------------------------------------
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d camera free");
+    
+    SetCameraMode(CAMERA_FREE);         // Set a free camera mode
+    SetCameraPosition(camera.position); // Set internal camera position to match our camera position
+    SetCameraTarget(camera.target);     // Set internal camera target to match our camera target
+
+#if defined(PLATFORM_WEB)
+    emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
+#else
+    SetTargetFPS(60);   // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+    
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        UpdateDrawFrame();
+    }
+#endif
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
+//----------------------------------------------------------------------------------
+// Module Functions Definition
+//----------------------------------------------------------------------------------
+void UpdateDrawFrame(void)
+{
+    // Update
+    //----------------------------------------------------------------------------------
+    UpdateCamera(&camera);          // Update internal camera and our camera
+     
+    // Calculate cube screen space position (with a little offset to be in top)
+    cubeScreenPosition = GetWorldToScreen((Vector3){cubePosition.x, cubePosition.y + 2.5f, cubePosition.z}, camera);
+    //----------------------------------------------------------------------------------
+
+    // Draw
+    //----------------------------------------------------------------------------------
+    BeginDrawing();
+
+        ClearBackground(RAYWHITE);
+
+        Begin3dMode(camera);
+
+            DrawCube(cubePosition, 2.0f, 2.0f, 2.0f, RED);
+            DrawCubeWires(cubePosition, 2.0f, 2.0f, 2.0f, MAROON);
+
+            DrawGrid(10, 1.0f);
+
+        End3dMode();
+        
+        DrawText("Enemy: 100 / 100", cubeScreenPosition.x - MeasureText("Enemy: 100 / 100", 20) / 2, cubeScreenPosition.y, 20, BLACK);
+        DrawText("Text is always on top of the cube", (screenWidth - MeasureText("Text is always on top of the cube", 20)) / 2, 25, 20, GRAY);
+        
+    EndDrawing();
+    //----------------------------------------------------------------------------------
+}
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