Merge pull request #213 from ampreeT/xen-portal-push-fix

Fix `env_xen_portal_effect` not pushing players

Author: ampreeT

scripting/include/srccoop.inc

@@ -111,6 +111,7 @@
 	#define ENTPATCH_BM_SNARK_NEST
 	#define ENTPATCH_BM_SP_WEAPONS
 	#define ENTPATCH_BM_DISSOLVE
+	#define ENTPATCH_BM_XENPORTAL_PUSH_PLAYERS
 
 	#define PLAYERPATCH_SUIT_SOUNDS
 	#define PLAYERPATCH_PICKUP_FORCEPLAYERTODROPTHISOBJECT

scripting/include/srccoop/blackmesa/entitypatch.inc

@@ -644,6 +644,50 @@ public MRESReturn Hook_TestGroundMove(Address _this, DHookReturn hReturn, DHookP
 	return MRES_Ignored;
 }
 
+//------------------------------------------------------
+// `env_xen_portal_effect`
+// Fixes xen portals not pushing players.
+//------------------------------------------------------
+public MRESReturn Hook_XenPortalEffect_AcceptInput(int _this, Handle hReturn, Handle hParams)
+{
+	char szInputType[MAX_FORMAT];
+	DHookGetParamString(hParams, 1, szInputType, sizeof(szInputType));
+	if (strcmp(szInputType, "PushAway", false) == 0 || strcmp(szInputType, "Burst", false) == 0)
+	{
+		CEnv_XenPortalEffect pPortalEffect = CEnv_XenPortalEffect(_this);
+
+		float flSize = pPortalEffect.GetSize();
+		float vec3PortalEffectPosition[3];
+		pPortalEffect.GetAbsOrigin(vec3PortalEffectPosition);
+
+		for (int i = 1; i <= MaxClients; ++i)
+		{
+			CBasePlayer pPlayer = CBasePlayer(i);
+			if (pPlayer != NULL_CBASEENTITY && pPlayer.IsAlive())
+			{
+				float vec3PlayerPosition[3];
+				pPlayer.GetAbsOrigin(vec3PlayerPosition);
+				
+				if (GetVectorDistance(vec3PortalEffectPosition, vec3PlayerPosition) < (flSize * 2))
+				{
+					float vec3Distance[3];
+					SubtractVectors(vec3PlayerPosition, vec3PortalEffectPosition, vec3Distance);
+					NormalizeVector(vec3Distance, vec3Distance);
+
+					float vec3Angles[3];
+					GetVectorAngles(vec3Distance, vec3Angles);
+
+					float vec3Forward[3];
+					GetAngleVectors(vec3Angles, vec3Forward, NULL_VECTOR, NULL_VECTOR);
+					ScaleVector(vec3Forward, 1024.0);	// TODO: Add better implementation matching original game.
+
+					pPlayer.SetAbsVelocity(vec3Forward);
+				}
+			}
+		}
+	}
+	return MRES_Ignored;
+}
 
 // Fixes map-placed tripmines not having the proper color with `mp_teamplay 1`.
 //

scripting/include/srccoop_api/classdef.inc

@@ -82,6 +82,7 @@
 #include <srccoop_api/classdef/bms/CBlackMesaBaseDetonator.inc>
 #include <srccoop_api/classdef/bms/CBlackMesaPlayer.inc>
 #include <srccoop_api/classdef/bms/CBM_MP_GameRules.inc>
+#include <srccoop_api/classdef/bms/CEnv_XenPortalEffect.inc>
 #include <srccoop_api/classdef/bms/CEnvBeamTeam.inc>
 #include <srccoop_api/classdef/bms/CParamsManager.inc>
 #include <srccoop_api/classdef/bms/CPropChargerBase.inc>

scripting/include/srccoop_api/classdef/bms/CEnv_XenPortalEffect.inc

@@ -0,0 +1,24 @@
+#pragma newdecls required
+#pragma semicolon 1
+
+// TODO: Find what class this really inherits from. 
+methodmap CEnv_XenPortalEffect < CBaseEntity
+{
+	public CEnv_XenPortalEffect(const int iEntIndex = -1)
+	{
+		return view_as<CEnv_XenPortalEffect>(CBaseEntity(iEntIndex));
+	}
+	public static CEnv_XenPortalEffect Create()
+	{
+		return CEnv_XenPortalEffect(CreateEntityByName("env_xen_portal_effect"));
+	}
+
+    public float GetSize()
+    {
+        return GetEntPropFloat(this.entindex, Prop_Data, "m_flSize");
+    }
+    public void SetSize(const float flSize)
+    {
+        SetEntPropFloat(this.entindex, Prop_Data, "m_flSize", flSize);
+    }
+}

scripting/srccoop.sp

@@ -708,6 +708,14 @@ public void OnEntityCreated(int iEntIndex, const char[] szClassname)
 	}
 	else // !isNPC
 	{
+		#if defined ENTPATCH_BM_XENPORTAL_PUSH_PLAYERS
+		if (strcmp(szClassname, "env_xen_portal_effect") == 0)
+		{
+			DHookEntity(hkAcceptInput, false, iEntIndex, _, Hook_XenPortalEffect_AcceptInput);
+			return;
+		}
+		#endif
+
 		#if defined ENTPATCH_BM_SP_WEAPONS
 		if (strcmp(szClassname, "grenade_frag") == 0)
 		{