(svn r19193) -Codechange: increase the maximum number of airport tiles to 256 and introduce AirportTileOverrideManager

1 files changed, 43 insertions, 3 deletions

diff --git a/src/newgrf_airporttiles.cpp b/src/newgrf_airporttiles.cpp
index 0735016a6..0eda02e1a 100644
--- a/src/newgrf_airporttiles.cpp
+++ b/src/newgrf_airporttiles.cpp
@@ -11,10 +11,15 @@
 
 #include "stdafx.h"
 #include "airport.h"
+#include "newgrf.h"
 #include "newgrf_airporttiles.h"
 #include "table/airporttiles.h"
 
 
+AirportTileSpec AirportTileSpec::tiles[NUM_AIRPORTTILES];
+
+AirportTileOverrideManager _airporttile_mngr(NEW_AIRPORTTILE_OFFSET, NUM_AIRPORTTILES, INVALID_AIRPORTTILE);
+
 /**
  * Retrieve airport tile spec for the given airport tile
  * @param gfx index of airport tile
@@ -22,8 +27,43 @@
  */
 /* static */ const AirportTileSpec *AirportTileSpec::Get(StationGfx gfx)
 {
-	assert(gfx < NUM_AIRPORTTILES);
-	extern const AirportTileSpec _origin_airporttile_specs[];
-	return &_origin_airporttile_specs[gfx];
+	assert(gfx < lengthof(AirportTileSpec::tiles));
+	return &AirportTileSpec::tiles[gfx];
+}
+
+/**
+ * This function initializes the tile array of AirportTileSpec
+ */
+void AirportTileSpec::ResetAirportTiles()
+{
+	memset(&AirportTileSpec::tiles, 0, sizeof(AirportTileSpec::tiles));
+	memcpy(&AirportTileSpec::tiles, &_origin_airporttile_specs, sizeof(_origin_airporttile_specs));
+
+	/* Reset any overrides that have been set. */
+	_airporttile_mngr.ResetOverride();
+}
+
+void AirportTileOverrideManager::SetEntitySpec(const AirportTileSpec *airpts)
+{
+	StationGfx airpt_id = this->AddEntityID(airpts->grf_prop.local_id, airpts->grf_prop.grffile->grfid, airpts->grf_prop.subst_id);
+
+	if (airpt_id == invalid_ID) {
+		grfmsg(1, "AirportTile.SetEntitySpec: Too many airport tiles allocated. Ignoring.");
+		return;
+	}
+
+	memcpy(&AirportTileSpec::tiles[airpt_id], airpts, sizeof(*airpts));
+
+	/* Now add the overrides. */
+	for (int i = 0; i < max_offset; i++) {
+		AirportTileSpec *overridden_airpts = &AirportTileSpec::tiles[i];
+
+		if (entity_overrides[i] != airpts->grf_prop.local_id || grfid_overrides[i] != airpts->grf_prop.grffile->grfid) continue;
+
+		overridden_airpts->grf_prop.override = airpt_id;
+		overridden_airpts->enabled = false;
+		entity_overrides[i] = invalid_ID;
+		grfid_overrides[i] = 0;
+	}
 }