Out of map orders leniency (#1769)

* Allow centering area commands out of map.
* Allow attacking out of map units.
* Allow guarding out of map units when both the actor and guardee are
builders.
* No need to allow out of map CMD_AREA_ATTACK.
* Remove out of map guard restrictions.
* Explicitly block out of map ground attack.
* Also evaluate attack command with 3 parameters as ground attack.

rts/Game/UI/GuiHandler.cpp

@@ -2376,8 +2376,11 @@ Command CGuiHandler::GetCommand(int mouseX, int mouseY, int buttonHint, bool pre
 				const float3 camTraceDir = mouse->buttons[button].dir;
 
 				const float traceDist = camera->GetFarPlaneDist() * 1.4f;
-				const float innerDist = CGround::LineGroundCol(camTracePos, camTracePos + camTraceDir * traceDist, false);
-				      float outerDist = -1.0f;
+				float innerDist = CGround::LineGroundCol(camTracePos, camTracePos + camTraceDir * traceDist, false);
+				float outerDist = -1.0f;
+
+				if (innerDist < 0.0f) // in case area center is out of map
+					innerDist = CGround::LinePlaneCol(camTracePos, camTraceDir, traceDist, CGround::GetWaterPlaneLevel());
 
 				if (innerDist < 0.0f)
 					return defaultRet;
@@ -3592,8 +3595,11 @@ void CGuiHandler::DrawMapStuff(bool onMiniMap)
 						const float3 camTraceDir = mouse->buttons[button].dir;
 
 						const float traceDist = camera->GetFarPlaneDist() * 1.4f;
-						const float innerDist = CGround::LineGroundCol(camTracePos, camTracePos + camTraceDir * traceDist, false);
-						      float outerDist = -1.0f;
+						float innerDist = CGround::LineGroundCol(camTracePos, camTracePos + camTraceDir * traceDist, false);
+						float outerDist = -1.0f;
+
+						if (innerDist < 0.0f) // in case area center is out of map
+							innerDist = CGround::LinePlaneCol(camTracePos, camTraceDir, traceDist, CGround::GetWaterPlaneLevel());
 
 						if (innerDist < 0.0f)
 							break;

rts/Sim/Units/CommandAI/CommandAI.cpp

@@ -640,7 +640,6 @@ bool CCommandAI::AllowedCommand(const Command& c, bool fromSynced)
 	// TODO check if the command is in the map first, for more commands
 	switch (cmdID) {
 		case CMD_MOVE:
-		case CMD_ATTACK:
 		case CMD_AREA_ATTACK:
 		case CMD_RECLAIM:
 		case CMD_REPAIR:
@@ -701,9 +700,12 @@ bool CCommandAI::AllowedCommand(const Command& c, bool fromSynced)
 
 				if (attackee == nullptr)
 					return false;
-				if (!attackee->pos.IsInBounds())
-					return false;
 			} else {
+				const bool isGroundTargeted = (c.GetNumParams() > 3 && c.GetParam(3) == 0)
+							      || c.GetNumParams() == 3;
+				if (isGroundTargeted && !IsCommandInMap(c))
+					return false; // don't allow direct ground attack out of map
+
 				AdjustGroundAttackCommand(c, fromSynced, aiOrder);
 			}
 		} break;
@@ -717,14 +719,8 @@ bool CCommandAI::AllowedCommand(const Command& c, bool fromSynced)
 				return false;
 		} break;
 		case CMD_GUARD: {
-			const CUnit* guardee = GetCommandUnit(c, 0);
-
 			if (!ud->canGuard)
 				return false;
-			if (owner && !owner->pos.IsInBounds())
-				return false;
-			if (guardee && !guardee->pos.IsInBounds())
-				return false;
 		} break;
 
 		case CMD_PATROL: {