zero_mission:basic_guides:doublehelix [MetConst Wiki]

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======Double Helix Beginner Guide (Incomplete)======
Note: This guide was made in reference to "[[http://www.romhacking.net/utilities/560/|Double Helix (Legacy)]]"

====Level Editing====
This section contains information about Double Helix's (seemingly) most basic function, level editing. This pertains to changing the physical layout of rooms, like adding/removing walls, platforms, lava/acid, missile/super missile/power bomb/energy tanks, etc.
===Image layers===
{{http://i.imgur.com/DcnaiXy.png?360}}

Rooms are made up of several layers, which have different properties.
  * BG3 (Background 3) - the background image, appears behind everything. Those green cave walls are in this layer.
  * Background - appears behind everything but the BG3. Those purple rocks are in this layer.
  * Level layer - appears in front of Samus and Enemies. Those blue rocks are in this layer.
  * Foreground - appears in front of everything, and its transparency can be controlled.
===Clipdata===
Clipdata controls how Samus interacts with each block. Clipdata 10, "Block," is a block that is solid on all sides. A "fall through" block crumbles when Samus touches the top. Samus can pass through "Air"/"No Block" freely.

Clipdata is independent of the Image layer, so you can assign a "Missile tank" clipdata to a blank tile, resulting in an invisible missile tank.


====Header Editor====
====Sprite Editor====
Double Helix has a sprite editing feature, reached through the menu: Tools>Sprite Editor. It has two main functions, modifying enemy palettes, and modifying Enemy Graphics.

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