Read line vertices from system bus

Author: kalimag

Assets/Lua/Doom/dsda-data.lua

@@ -445,12 +445,18 @@ dsda.sector = dsda.struct_layout(nil, dsda.SECTOR_SIZE, "Sectors")
 	.s32  ("ceiling_xscale")
 	.s32  ("ceiling_yscale")
 
+-- vertex_t https://github.com/TASEmulators/dsda-doom/blob/623068c33f6bf21239c6c6941f221011b08b6bb9/prboom2/src/r_defs.h#L70-L80
+dsda.vertex = dsda.struct_layout()
+	.s32  ("x")
+	.s32  ("y")
+	.s32  ("px")
+	.s32  ("py")
+
 -- line_t https://github.com/TASEmulators/dsda-doom/blob/5608ee441410ecae10a17ecdbe1940bd4e1a2856/prboom2/src/r_defs.h#L312-L347
--- followed by v1, v2 coords
 dsda.line = dsda.struct_layout(nil, dsda.LINE_SIZE, "Lines")
 	.s32  ("iLineID")
-	.ptr  ("v1")
-	.ptr  ("v2")
+	.ptrto("v1", dsda.vertex)
+	.ptrto("v2", dsda.vertex)
 	.s32  ("dx")
 	.s32  ("dy")
 	.float("texel_length")
@@ -484,12 +490,6 @@ dsda.line = dsda.struct_layout(nil, dsda.LINE_SIZE, "Lines")
 	.s32  ("healthgroup")
 	.ptr  ("tranmap")
 	.float("alpha")
-	.align(8)
-	-- BizHawk
-	.s32  ("v1_x")
-	.s32  ("v1_y")
-	.s32  ("v2_x")
-	.s32  ("v2_y")
 
 
 

Assets/Lua/Doom/things-lines.lua

@@ -228,11 +228,12 @@ local function iterate()
 		-- when moving so this is a decent way of cutting down on memory reads
 		local validcount = line.validcount
 		if validcount ~= line._validcount then
+			local v1, v2 = line.v1, line.v2
 			line._validcount = validcount
-			line._v1 = { x =  line.v1_x,
-		                 y = -line.v1_y, }
-			line._v2 = { x =  line.v2_x,
-		                 y = -line.v2_y, }
+			line._v1 = { x =  v1.x,
+			             y = -v1.y, }
+			line._v2 = { x =  v2.x,
+			             y = -v2.y, }
 		end
 		local v1, v2  = line._v1, line._v2
 		local special = line.special