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<cat>Dev.Map</cat>⤶ <title>Creating your first gm_flatgrass</title>⤶ ⤶ The purpose of this guide is to jump into Hammer and start creating something, in this case we will be recreating **`gm_flatgrass`** step-by-step.⤶ ⤶ If you want to learn everything about Hammer and its tools before making a map then you can [use this guide](https://docs.google.com/document/d/17aFk2Z-C1G2ZYcQRxKx-fEK3m4h0jSw9nqGjC9T1Bx4) instead, it's also useful to cover any gaps you may find yourself into while building your own **`gm_flatgrass`**. ([Here's a quick video](https://www.youtube.com/watch?v=xDq2b_iOcZM) to get you started if you don't have the time to do either)⤶ ⤶ *`Note: This guide uses the version of Hammer that is included in Half Life: Alyx`*⤶ ⤶ # Knowing your tools⤶ ⤶ **'File' > 'New'** ( <key>CTRL</key> + <key>N</key> ) to open a new map and then **'File' > 'Save'** ( <key>CTRL</key> + <key>S</key> ) to save as *gm_flatgrass*.⤶ ⤶ ## Selection Modes⤶ ⤶ <upload src="314/8d90a75e4575d36.png" size="43404" name="image.png" />⤶ ⤶ From left to right we will be using the following modes: **Edges** ( <key>2</key> ), **Faces** ( <key>3</key> ), **Objects** ( <key>5</key> )⤶ ⤶ <upload src="314/8d90a7fff4f08da.gif" size="820392" name="CubeExample.gif" />⤶ ⤶ These three selection modes are the bare minimum to create this map, you can switch between them by pressing the number keys that represent their position.⤶ ⤶ After picking the **Selection Mode**, you may also choose which **Tool** to interact with.⤶ ⤶ ## Tools⤶ ⤶ You can find tools on the left side, in this guide we will use the following:⤶ ⤶ <upload src="314/8d90a83c8940111.png" size="29948" name="Tools.png" />⤶ ⤶ ⤶ ## All of the rest⤶ ⤶ Crash course on everything else we will be using on this guide and a short description.⤶ I suggest you look at [this video tutorial](https://www.youtube.com/watch?v=HrfsfgYpYN0) to help with the layout.⤶ ⤶ <upload src="314/8d90a86169ab3d9.png" size="359908" name="Remaining Stuff.png" />⤶ ⤶ * **Object Editing**: Depending on the **Tool** and your **Selection Mode**, this section will have different options to interact and modify the selected geometry.⤶ ⤶ * **Compile & Play**: Opens the compile tool to run your map, use Fast Compile while working.⤶ ⤶ * **2D Viewport**: Shows an [orthographic](https://en.wikipedia.org/wiki/Orthographic_projection) view of the map from any direction. You can shift views by pressing Top ( <key>F2</key> ), Front ( <key>F3</key> ), Side ( <key>F4</key> )⤶ ⤶ * **Assets Window**: Props, Materials, Prefabs etc... You can drag and drop from the **Asset Browser** that opens when running the workshop tools as well.⤶ ⤶ * **Object Properties**: While having an object or **point entity** selected you can modify its scale, position, rotation, and any properties it might have.⤶ ⤶ * **Grid Settings**: When moving or resizing an object, it will snap to the smallest amount of units you have selected. Most of the time we will use **64**, **32**, **16**, and **8** units.⤶ ⤶ ---⤶ ⤶ # Making the map step-by-step⤶ ⤶ ## Step 1:⤶ ⤶ With the **Block Tool** ( <key>SHIFT</key> + <key>B</key> ), select **Quad** in the **Object Editing** window, make a plane that is *2048x2048* units. The bigger your map is, the longer compiling takes, so for now we'll keep it small and enlarge it when we're ready to finalize.⤶ <upload src="314/8d90a8c729cf228.png" size="910081" name="image.png" />⤶ You can use the **Object Properties** to center the plane in **X: 0; Y: 0**⤶ ⤶ ⤶ ## Step 2:⤶ ⤶ With the **Entity Tool** ( <key>SHIFT</key> + <key>E</key> ) selected, from the **Object Editing** window place the **Player Start**, **Sky**, and **Environment Light**. Make sure to rotate the light having the arrow face down using the **Rotate Tool** ( <key>R</key> )⤶ <upload src="314/8d90a8d6cba4512.png" size="447667" name="image.png" />⤶ ⤶ ### Step 2.5:⤶ ⤶ Slap a grass texture on the plane and do a **Fast Compile**, if all you wanted was a literal flatgrass then you have finished the tutorial.⤶ ⤶ ## Step 3:⤶ ⤶ With the **Block Tool** ( <key>SHIFT</key> + <key>B</key> ), select **Cylinder** in the **Object Editing** window, make a cylinder that is *512x512* units and place it in the center.⤶ <upload src="314/8d90a8ed3e90fc7.png" size="825083" name="image.png" />⤶ ⤶ ## Step 4:⤶ ⤶ With the **Clipping Tool** ( <key>SHIFT</key> + <key>X</key> ) and working in the **2D Viewport**, slice the cylinder in half by pressing <key>ENTER</key> to confirm, then slice in quarters.⤶ <upload src="314/8d90a8f8be3894c.png" size="951295" name="image.png" />⤶ In the **Object Editing** window remember to have the third **Keep Mode** selected.⤶ ⤶ ## Step 5:⤶ ⤶ While in **Objects Selection Mode** ( <key>5</key> ) use the **Move Tool** ( <key>T</key> )⤶ <upload src="314/8d90a90de6709c7.png" size="937315" name="image.png" />⤶ ⤶ ⤶ # WORK IN PROGRESS⤶ ⤶ I'll finish this tomorrow.⤶ ⤶ ---

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