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--- notes:comporg:fall2023:projects:bia0 [2023/10/26 00:23] – [Arrays of Structs in Assembly] walley
+++ notes:comporg:fall2023:projects:bia0 [2023/10/26 00:33] (current) – [Arrays of Structs in Assembly] walley
@@ Line 9: / Line 9: @@
   - Color
   - Health
-  - Visibility toggle
+  - Visibility Toggle
+Accessing an individual array element uses an ID value to get that position's specific data. In Assembly, we use a register to hold the memory address of a given element's first property. Here's an example in practice:
+The first Brick's X Position is in ''BP-24''(The 24th element in the Stack). We copy this memory address and store it within a general register (preferably a later one so its not likely to get overwritten):
+<code>
+mov  R0,  BP
+isub R0,  24
+mov  R10, R0
+</code>
+Within our for-loop we use to access all the bricks sequentially, we reference individual elements through R10. (i.e. ''[R10-3]'' is the current Brick's color value.)
+When moving from one brick to the next, we directly adjust the memory address stored in R10. It's simple in practice:
+<code>
+isub R10, 5
+</code>
+This reference point moves from the current Brick's X Position, to the next Brick's X Position. This way, our relative point R10 doesn't change when inside any brick. This allows for loops to work with arrays.

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