added some comments

diff --git a/src/main.h b/src/main.h
index 2906946675d805c773f5ad8dc94a6f3ad1d3dedd..7f3990f0c83701abfeb640b0dbba311d5900cf43 100644 (file)
--- a/src/main.h
+++ b/src/main.h
@@ -1201,6 +1201,7 @@
 
 #define EL_EM_KEY_1_FILE_OBSOLETE      119     // obsolete; now EL_EM_KEY_1
 
+// text character elements
 #define EL_CHAR_START                  120
 #define EL_CHAR_ASCII0                 (EL_CHAR_START  - 32)
 #define EL_CHAR_ASCII0_START           (EL_CHAR_ASCII0 + 32)
@@ -1216,6 +1217,7 @@
 #define EL_EXPANDABLE_WALL_VERTICAL    201
 #define EL_EXPANDABLE_WALL_ANY         202
 
+// EM style elements
 #define EL_EM_GATE_1                   203
 #define EL_EM_GATE_2                   204
 #define EL_EM_GATE_3                   205
@@ -1225,6 +1227,7 @@
 #define EL_EM_KEY_3_FILE_OBSOLETE      208     // obsolete; now EL_EM_KEY_3
 #define EL_EM_KEY_4_FILE_OBSOLETE      209     // obsolete; now EL_EM_KEY_4
 
+// SP style elements
 #define EL_SP_START                    210
 #define EL_SP_EMPTY_SPACE              (EL_SP_START + 0)
 #define EL_SP_EMPTY                    EL_SP_EMPTY_SPACE
@@ -1269,6 +1272,7 @@
 #define EL_SP_CHIP_BOTTOM              (EL_SP_START + 39)
 #define EL_SP_END                      (EL_SP_START + 39)
 
+// EM style elements
 #define EL_EM_GATE_1_GRAY              250
 #define EL_EM_GATE_2_GRAY              251
 #define EL_EM_GATE_3_GRAY              252
@@ -1277,6 +1281,7 @@
 #define EL_EM_DYNAMITE                 254
 #define EL_EM_DYNAMITE_ACTIVE          255
 
+// DC2 style elements
 #define EL_PEARL                       256
 #define EL_CRYSTAL                     257
 #define EL_WALL_PEARL                  258
@@ -1352,6 +1357,7 @@
 #define EL_TIMEGATE_SWITCH_ACTIVE      324
 #define EL_TIMEGATE_SWITCH             325
 
+// EMC style elements
 #define EL_BALLOON                     326
 #define EL_BALLOON_SWITCH_LEFT         327
 #define EL_BALLOON_SWITCH_RIGHT                328
@@ -1372,6 +1378,7 @@
 #define EL_EMC_WALL_7                  342
 #define EL_EMC_WALL_8                  343
 
+// DX style elements
 #define EL_TUBE_ANY                    344
 #define EL_TUBE_VERTICAL               345
 #define EL_TUBE_HORIZONTAL             346
@@ -1399,10 +1406,13 @@
 #define EL_CUSTOM_END                  615
 // ---------- end of custom elements section ----------------------------------
 
+// EM style elements
 #define EL_EM_KEY_1                    616
 #define EL_EM_KEY_2                    617
 #define EL_EM_KEY_3                    618
 #define EL_EM_KEY_4                    619
+
+// DC2 style elements
 #define EL_ENVELOPE_1                  620
 #define EL_ENVELOPE_2                  621
 #define EL_ENVELOPE_3                  622
@@ -1483,6 +1493,7 @@
 
 #define EL_BD_EXPANDABLE_WALL          713
 
+// reference elements
 #define EL_PREV_CE_8                   714
 #define EL_PREV_CE_7                   715
 #define EL_PREV_CE_6                   716
@@ -1502,6 +1513,7 @@
 #define EL_NEXT_CE_8                   730
 #define EL_ANY_ELEMENT                 731
 
+// text character elements
 #define EL_STEEL_CHAR_START            732
 #define EL_STEEL_CHAR_ASCII0           (EL_STEEL_CHAR_START  - 32)
 #define EL_STEEL_CHAR_ASCII0_START     (EL_STEEL_CHAR_ASCII0 + 32)
@@ -1513,6 +1525,7 @@
 
 #define EL_STEEL_CHAR(c)               (EL_STEEL_CHAR_ASCII0+MAP_FONT_ASCII(c))
 
+// unused elements
 #define EL_SPERMS                      812
 #define EL_BULLET                      813
 #define EL_HEART                       814
@@ -1524,6 +1537,7 @@
 #define EL_SIGN_CROSS                  820
 #define EL_SIGN_FRANKIE                        821
 
+// DC2 style elements
 #define EL_STEEL_EXIT_CLOSED           822
 #define EL_STEEL_EXIT_OPEN             823
 
@@ -1577,6 +1591,7 @@
 
 #define EL_FROM_LEVEL_TEMPLATE         863
 
+// MM style elements
 #define EL_MM_START                    864
 #define EL_MM_START_1                  EL_MM_START
 
@@ -1722,6 +1737,7 @@
 #define EL_MM_END_1                    (EL_MM_START + 159)
 #define EL_MM_START_2                  (EL_MM_START + 160)
 
+// DF style elements
 #define EL_DF_START                    EL_MM_START_2
 #define EL_DF_START_1                  EL_MM_START_2
 #define EL_DF_START2                   (EL_DF_START - 240)
@@ -1851,6 +1867,7 @@
 
 #define EL_DF_END_1                    (EL_DF_START2 + 355)
 
+// MM style elements
 #define EL_MM_TELEPORTER_RED_START     (EL_DF_START2 + 356)
 #define EL_MM_TELEPORTER_RED_1         (EL_MM_TELEPORTER_RED_START + 0)
 #define EL_MM_TELEPORTER_RED_2         (EL_MM_TELEPORTER_RED_START + 1)
@@ -1938,6 +1955,7 @@
 
 #define EL_MM_END_2                    (EL_DF_START2 + 430)
 
+// EMC style elements
 #define EL_SPRING_LEFT                 1215
 #define EL_SPRING_RIGHT                        1216
 
@@ -1954,6 +1972,7 @@
 #define EL_MM_START_3                  EL_DF_MIRROR_FIXED_START
 #define EL_DF_START_2                  EL_DF_MIRROR_FIXED_START
 
+// DF style elements
 #define EL_DF_MIRROR_FIXED_START       1233
 #define EL_DF_MIRROR_FIXED_1           (EL_DF_MIRROR_FIXED_START + 0)
 #define EL_DF_MIRROR_FIXED_2           (EL_DF_MIRROR_FIXED_START + 1)