client: bump protocol and game version / unstable compatibility

Config string numbers is different to original Quake 2 code,
code is not compatible with any version of official protocols or
game code. And game code should be recompiled for use with engine.

doc/100_tested_maps.md

@@ -8,9 +8,6 @@
 
 ## Quake2 ReRelease
 
-Notes:
- * mgu5m2: server code: Too many models 256 (226 inline models)
-
  | map                            | gl1.4  | gl3/gles3 | gl4.6  | vk     | soft        |
  | ------------------------------ | ------ | --------- | ------ | ------ | ----------- |
  | badlands.bsp                   | OK     | N/A       | N/A    | OK     | N/A         |
@@ -80,7 +77,7 @@ Notes:
  | mgu4m3.bsp                     | OK     | N/A       | N/A    | OK     | N/A         |
  | mgu4trial.bsp                  | OK     | N/A       | N/A    | OK     | N/A         |
  | mgu5m1.bsp                     | OK     | N/A       | N/A    | OK     | N/A         |
- | mgu5m2.bsp                     | B      | N/A       | N/A    | B      | N/A         |
+ | mgu5m2.bsp                     | OK     | N/A       | N/A    | OK     | N/A         |
  | mgu5m3.bsp                     | OK     | N/A       | N/A    | OK     | N/A         |
  | mgu5trial.bsp                  | OK     | N/A       | N/A    | OK     | N/A         |
  | mgu6m1.bsp                     | OK     | N/A       | N/A    | OK     | N/A         |

src/client/cl_parse.c

@@ -1125,6 +1125,40 @@ CL_ParseConfigString(void)
 
 	i = MSG_ReadShort(&net_message);
 
+	if (cls.serverProtocol == PROTOCOL_RELEASE_VERSION ||
+		cls.serverProtocol == PROTOCOL_DEMO_VERSION ||
+		cls.serverProtocol == PROTOCOL_RR97_VERSION)
+	{
+		if (i >= CS_MODELS_Q2DEMO && i < CS_SOUNDS_Q2DEMO)
+		{
+			i += CS_MODELS - CS_MODELS_Q2DEMO;
+		}
+		else if (i >= CS_SOUNDS_Q2DEMO && i < CS_IMAGES_Q2DEMO)
+		{
+			i += CS_SOUNDS - CS_SOUNDS_Q2DEMO;
+		}
+		else if (i >= CS_IMAGES_Q2DEMO && i < CS_LIGHTS_Q2DEMO)
+		{
+			i += CS_IMAGES - CS_IMAGES_Q2DEMO;
+		}
+		else if (i >= CS_LIGHTS_Q2DEMO && i < CS_ITEMS_Q2DEMO)
+		{
+			i += CS_LIGHTS - CS_LIGHTS_Q2DEMO;
+		}
+		else if (i >= CS_ITEMS_Q2DEMO && i < CS_PLAYERSKINS_Q2DEMO)
+		{
+			i += CS_ITEMS - CS_ITEMS_Q2DEMO;
+		}
+		else if (i >= CS_PLAYERSKINS_Q2DEMO && i < CS_GENERAL_Q2DEMO)
+		{
+			i += CS_PLAYERSKINS - CS_PLAYERSKINS_Q2DEMO;
+		}
+		else if (i >= CS_GENERAL_Q2DEMO && i < MAX_CONFIGSTRINGS_Q2DEMO)
+		{
+			i += CS_GENERAL - CS_GENERAL_Q2DEMO;
+		}
+	}
+
 	if ((i < 0) || (i >= MAX_CONFIGSTRINGS))
 	{
 		Com_Error(ERR_DROP, "%s: configstring > MAX_CONFIGSTRINGS", __func__);
@@ -1173,7 +1207,7 @@ CL_ParseConfigString(void)
 			}
 		}
 	}
-	else if ((i >= CS_SOUNDS) && (i < CS_SOUNDS + MAX_MODELS))
+	else if ((i >= CS_SOUNDS) && (i < CS_SOUNDS + MAX_SOUNDS))
 	{
 		if (cl.refresh_prepped)
 		{
@@ -1181,7 +1215,7 @@ CL_ParseConfigString(void)
 				S_RegisterSound(cl.configstrings[i]);
 		}
 	}
-	else if ((i >= CS_IMAGES) && (i < CS_IMAGES + MAX_MODELS))
+	else if ((i >= CS_IMAGES) && (i < CS_IMAGES + MAX_IMAGES))
 	{
 		if (cl.refresh_prepped)
 		{

src/common/header/shared.h

@@ -169,11 +169,21 @@ typedef unsigned char byte;
  #define PRINTF_ATTR(FMT, VARGS) __attribute__((format(printf, FMT , VARGS )))
 #endif
 
+/* per-level limits Quake 2 Protocol version 26 */
+#define MAX_CLIENTS_Q2DEMO 256             /* absolute limit */
+#define MAX_EDICTS_Q2DEMO 1024             /* must change protocol to increase more */
+#define MAX_LIGHTSTYLES_Q2DEMO 256
+#define MAX_MODELS_Q2DEMO 256              /* these are sent over the net as bytes */
+#define MAX_SOUNDS_Q2DEMO 256              /* so they cannot be blindly increased */
+#define MAX_IMAGES_Q2DEMO 256
+#define MAX_ITEMS_Q2DEMO 256
+#define MAX_GENERAL_Q2DEMO (MAX_CLIENTS_Q2DEMO * 2)       /* general config strings */
+
 /* per-level limits */
 #define MAX_CLIENTS 256             /* absolute limit */
 #define MAX_EDICTS 1024             /* must change protocol to increase more */
 #define MAX_LIGHTSTYLES 256
-#define MAX_MODELS 256              /* these are sent over the net as bytes */
+#define MAX_MODELS 512              /* these are sent over the net as bytes */
 #define MAX_SOUNDS 256              /* so they cannot be blindly increased */
 #define MAX_IMAGES 256
 #define MAX_ITEMS 256
@@ -1154,6 +1164,16 @@ typedef enum
 #define CS_MAXCLIENTS 30
 #define CS_MAPCHECKSUM 31           /* for catching cheater maps */
 
+/* CS structure Quake 2 Protocol version 26 */
+#define CS_MODELS_Q2DEMO 32
+#define CS_SOUNDS_Q2DEMO (CS_MODELS_Q2DEMO + MAX_MODELS_Q2DEMO)
+#define CS_IMAGES_Q2DEMO (CS_SOUNDS_Q2DEMO + MAX_SOUNDS_Q2DEMO)
+#define CS_LIGHTS_Q2DEMO (CS_IMAGES_Q2DEMO + MAX_IMAGES_Q2DEMO)
+#define CS_ITEMS_Q2DEMO (CS_LIGHTS_Q2DEMO + MAX_LIGHTSTYLES_Q2DEMO)
+#define CS_PLAYERSKINS_Q2DEMO (CS_ITEMS_Q2DEMO + MAX_ITEMS_Q2DEMO)
+#define CS_GENERAL_Q2DEMO (CS_PLAYERSKINS_Q2DEMO + MAX_CLIENTS_Q2DEMO)
+#define MAX_CONFIGSTRINGS_Q2DEMO (CS_GENERAL_Q2DEMO + MAX_GENERAL_Q2DEMO)
+
 #define CS_MODELS 32
 #define CS_SOUNDS (CS_MODELS + MAX_MODELS)
 #define CS_IMAGES (CS_SOUNDS + MAX_SOUNDS)

src/game/header/game.h

@@ -35,7 +35,7 @@
  * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  */
 
-#define GAME_API_VERSION 3
+#define GAME_API_VERSION 4
 
 /* edict->svflags */
 #define SVF_NOCLIENT 0x00000001             /* don't send entity to clients, even if it has effects */