Tools/Misc: Document strange array access indexing

Shauren · Ovahlord · commit fcc4138e0444 · 2026-03-09T22:22:41.000+01:00
diff --git a/src/tools/map_extractor/System.cpp b/src/tools/map_extractor/System.cpp
@@ -511,6 +511,7 @@ bool ConvertADT(std::string const& inputPath, std::string const& outputPath, int
         // Set map height as grid height
         for (int y = 0; y <= ADT_CELL_SIZE; y++)
         {
+            // edge V9s are overlapping between cells (i * ADT_CELL_SIZE is correct, otherwise we would be missing a row/column of V8s between)
             int cy = mcnk->iy * ADT_CELL_SIZE + y;
             for (int x = 0; x <= ADT_CELL_SIZE; x++)
             {
@@ -536,6 +537,7 @@ bool ConvertADT(std::string const& inputPath, std::string const& outputPath, int
             // get V9 height map
             for (int y = 0; y <= ADT_CELL_SIZE; y++)
             {
+                // edge V9s are overlapping between cells (i * ADT_CELL_SIZE is correct, otherwise we would be missing a row/column of V8s between)
                 int cy = mcnk->iy * ADT_CELL_SIZE + y;
                 for (int x = 0; x <= ADT_CELL_SIZE; x++)
                 {

Original file line number	Diff line number	Diff line change
`@@ -511,6 +511,7 @@ bool ConvertADT(std::string const& inputPath, std::string const& outputPath, int`
`511`	`511`	`// Set map height as grid height`
`512`	`512`	`for (int y = 0; y <= ADT_CELL_SIZE; y++)`
`513`	`513`	`{`
	`514`	`+ // edge V9s are overlapping between cells (i * ADT_CELL_SIZE is correct, otherwise we would be missing a row/column of V8s between)`
`514`	`515`	`int cy = mcnk->iy * ADT_CELL_SIZE + y;`
`515`	`516`	`for (int x = 0; x <= ADT_CELL_SIZE; x++)`
`516`	`517`	`{`
`@@ -536,6 +537,7 @@ bool ConvertADT(std::string const& inputPath, std::string const& outputPath, int`
`536`	`537`	`// get V9 height map`
`537`	`538`	`for (int y = 0; y <= ADT_CELL_SIZE; y++)`
`538`	`539`	`{`
	`540`	`+ // edge V9s are overlapping between cells (i * ADT_CELL_SIZE is correct, otherwise we would be missing a row/column of V8s between)`
`539`	`541`	`int cy = mcnk->iy * ADT_CELL_SIZE + y;`
`540`	`542`	`for (int x = 0; x <= ADT_CELL_SIZE; x++)`
`541`	`543`	`{`