Reviewed example formating

examples/Makefile

@@ -375,7 +375,7 @@ CORE = \
     core/core_input_gestures \
     core/core_2d_camera \
     core/core_2d_camera_platformer \
-	core/core_2d_camera_mouse_zoom \
+    core/core_2d_camera_mouse_zoom \
     core/core_3d_camera_mode \
     core/core_3d_camera_free \
     core/core_3d_camera_first_person \

examples/core/core_2d_camera_mouse_zoom.c

@@ -2,100 +2,103 @@
 *
 *   raylib [core] example - 2d camera mouse zoom
 *
-*   This example has been created using raylib 1.5 (www.raylib.com)
+*   This example was originally created with raylib 4.2, last time updated for raylib 4.2
+*
 *   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
 *
 *   Copyright (c) 2022 Jeffery Myers
 *
 ********************************************************************************************/
 
-
 #include "raylib.h"
-#include "rlgl.h"
-#include "raymath.h";
 
+#include "rlgl.h"
+#include "raymath.h"
 
 //------------------------------------------------------------------------------------
 // Program main entry point
 //------------------------------------------------------------------------------------
 int main ()
 {
-	// Initialization
-	//--------------------------------------------------------------------------------------
-	const int screenWidth = 800;
-	const int screenHeight = 450;
-
-	InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera mouse zoom");
-
-	Camera2D camera = { 0 };
-	camera.zoom = 1;
-
-	SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
-	//--------------------------------------------------------------------------------------
-
-	// Main game loop
-	while (!WindowShouldClose())
-	{
-		// translate based on right click
-		if (IsMouseButtonDown(MOUSE_BUTTON_RIGHT))
-		{
-			Vector2 delta = GetMouseDelta();
-			delta = Vector2Scale(delta, -1.0f / camera.zoom);
-
-			camera.target = Vector2Add(camera.target, delta);
-		}
-
-		// zoom based on wheel
-		float wheel = GetMouseWheelMove();
-		if (wheel != 0)
-		{
-			// get the world point that is under the mouse
-			Vector2 mouseWorldPos = GetScreenToWorld2D(GetMousePosition(), camera);
-			
-			// set the offset to where the mouse is
-			camera.offset = GetMousePosition();
-
-			// set the target to match, so that the camera maps the world space point under the cursor to the screen space point under the cursor at any zoom
-			camera.target = mouseWorldPos;
-
-			// zoom
-			const float zoomIncrement = 0.125f;
-
-			camera.zoom += wheel * zoomIncrement;
-			if (camera.zoom < zoomIncrement)
-				camera.zoom = zoomIncrement;
-		}
-
-		//----------------------------------------------------------------------------------
-
-		// Draw
-		//----------------------------------------------------------------------------------
-		BeginDrawing();
-		BeginDrawing();
-		ClearBackground(BLACK);
-
-		BeginMode2D(camera);
-
-		// draw the 3d grid, rotated 90 degrees and centered around 0,0 just so we have something in the XY plane
-        rlPushMatrix();
-        rlTranslatef(0, 25 * 50, 0);
-        rlRotatef(90, 1, 0, 0);
-        DrawGrid(100, 50);
-        rlPopMatrix();
-
-		// draw a thing
-		DrawCircle(100, 100, 50, YELLOW);
-		EndMode2D();
-
-		DrawText("Right drag to move, mouse wheel to zoom", 2, 2, 20, WHITE);
-		
-		EndDrawing();
-		//----------------------------------------------------------------------------------
-	}
-
-	// De-Initialization
+    // Initialization
     //--------------------------------------------------------------------------------------
-	CloseWindow();        // Close window and OpenGL context
-	//--------------------------------------------------------------------------------------
-	return 0;
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera mouse zoom");
+
+    Camera2D camera = { 0 };
+    camera.zoom = 1.0f;
+
+    SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())        // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // Translate based on mouse right click
+        if (IsMouseButtonDown(MOUSE_BUTTON_RIGHT))
+        {
+            Vector2 delta = GetMouseDelta();
+            delta = Vector2Scale(delta, -1.0f/camera.zoom);
+
+            camera.target = Vector2Add(camera.target, delta);
+        }
+
+        // Zoom based on mouse wheel
+        float wheel = GetMouseWheelMove();
+        if (wheel != 0)
+        {
+            // Get the world point that is under the mouse
+            Vector2 mouseWorldPos = GetScreenToWorld2D(GetMousePosition(), camera);
+            
+            // Set the offset to where the mouse is
+            camera.offset = GetMousePosition();
+
+            // Set the target to match, so that the camera maps the world space point 
+            // under the cursor to the screen space point under the cursor at any zoom
+            camera.target = mouseWorldPos;
+
+            // Zoom increment
+            const float zoomIncrement = 0.125f;
+
+            camera.zoom += (wheel*zoomIncrement);
+            if (camera.zoom < zoomIncrement) camera.zoom = zoomIncrement;
+        }
+
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+            ClearBackground(BLACK);
+
+            BeginMode2D(camera);
+
+                // Draw the 3d grid, rotated 90 degrees and centered around 0,0 
+                // just so we have something in the XY plane
+                rlPushMatrix();
+                    rlTranslatef(0, 25*50, 0);
+                    rlRotatef(90, 1, 0, 0);
+                    DrawGrid(100, 50);
+                rlPopMatrix();
+
+                // Draw a reference circle
+                DrawCircle(100, 100, 50, YELLOW);
+                
+            EndMode2D();
+
+            DrawText("Mouse right button drag to move, mouse wheel to zoom", 10, 10, 20, WHITE);
+        
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+    return 0;
 }