(svn r10074) -Add: Addition of IndustryOverrideManager as well as the basic (and unfinished) support for callbacks for industries

1 files changed, 225 insertions, 0 deletions

diff --git a/src/newgrf_industries.cpp b/src/newgrf_industries.cpp
new file mode 100644
index 000000000..d07b6cf79
--- /dev/null
+++ b/src/newgrf_industries.cpp
@@ -0,0 +1,225 @@
+/* $Id$ */
+
+/** @file newgrf_industries.cpp */
+
+#include "stdafx.h"
+#include "openttd.h"
+#include "debug.h"
+#include "functions.h"
+#include "macros.h"
+#include "industry.h"
+#include "newgrf.h"
+#include "newgrf_callbacks.h"
+#include "newgrf_spritegroup.h"
+#include "newgrf_industries.h"
+#include "newgrf_commons.h"
+
+/* Since the industry IDs defined by the GRF file don't necessarily correlate
+ * to those used by the game, the IDs used for overriding old industries must be
+ * translated when the idustry spec is set. */
+IndustryOverrideManager _industry_mngr(NEW_INDUSTRYOFFSET, NUM_INDUSTRYTYPES, INVALID_INDUSTRYTYPE);
+
+/**
+ * Finds the distance for the closest tile with water/land given a tile
+ * @param tile  the tile to find the distance too
+ * @param water whether to find water or land
+ * @note FAILS when an industry should be seen as water
+ */
+static uint GetClosestWaterDistance(TileIndex tile, bool water)
+{
+	TileIndex t;
+	uint best_dist;
+	for (t = 1; t < MapSize(); t++) {
+		if (IsTileType(t, MP_WATER) == water) break;
+	}
+	best_dist = DistanceManhattan(tile, t);
+
+	for (; t < MapSize(); t++) {
+		uint dist = DistanceManhattan(tile, t);
+		if (dist < best_dist) {
+			if (IsTileType(t, MP_WATER) == water) best_dist = dist;
+		} else {
+			/* When the Y distance between the current row and the 'source' tile
+			 * is larger than the best distance, we've found the best distance */
+			if (TileY(t) - TileY(tile) > best_dist) return best_dist;
+			if (TileX(tile) > TileX(t)) {
+				/* We can safely skip this many tiles; from here all tiles have a
+				 * higher or equal distance than the best distance */
+				t |= MapMaxX();
+				continue;
+			} else {
+				/* We can safely skip this many tiles; up to here all tiles have a
+				 * higher or equal distance than the best distance */
+				t += best_dist - dist;
+				continue;
+			}
+		}
+	}
+
+	return best_dist;
+}
+
+/** This function implements the industries variables that newGRF defines.
+ * @param variable that is queried
+ * @param parameter unused
+ * @param available will return false if ever the variable asked for does not exist
+ * @param ind is of course the industry we are inquiring
+ * @return the value stored in the corresponding variable*/
+uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available)
+{
+	const Industry *industry = object->u.industry.ind;
+	TileIndex tile   = object->u.industry.tile;
+	const IndustrySpec *indspec = GetIndustrySpec(industry->type);
+
+	switch (variable) {
+		case 0x40:
+		case 0x41:
+		case 0x42: { // waiting cargo, but only if those two callback flags are set
+			uint16 callback = indspec->callback_flags;
+			if (callback & (CBM_IND_PRODUCTION_CARGO_ARRIVAL | callback & CBM_IND_PRODUCTION_256_TICKS)) {
+				return max(industry->cargo_waiting[variable - 0x40], (uint16)0x7FFF);
+			} else {
+				return 0;
+			}
+		}
+		/* TODO: somehow determine whether we're in water or not */
+		case 0x43: return GetClosestWaterDistance(tile, true); // Manhattan distance of closes dry/water tile
+
+		case 0x60: { /* Get industry ID at offset param */
+			/*The parameter of this variable is an offset from the northernmost tile of the industry:
+			 * the high nibble contains the Y offset, the low one the X offset; both are unsigned.
+			 * The high word of the return value is currently reserved, and the low word can be:
+			 * 00xxh if the tile is an industry tile and was defined in the current GRF with ID xx.
+			 * FFxxh if the tile is an industry tile of an old type, and has the ID xx.
+			 * FFFEh if the tile is an industry tile that was defined in another GRF file
+			 * FFFFh if the tile isn't an industry tile, or doesn't belong to the current industry */
+			return GetIndustry(GetNearbyTile(parameter, tile))->type;
+		}
+
+		case 0x61: return 0; // Get random tile bits at offset param
+
+		case 0x62: // Land info of nearby tiles
+		case 0x63: // Animation stage of nerby tiles
+		case 0x64: break; // Distance of nearest industry of given type
+		/* Get town zone and Manhattan distance of closest town */
+ 		case 0x65: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceManhattan(tile, industry->town->xy), 0xFFFF);
+		/* Get square of Euclidian distance of closes town */
+		case 0x66: return GetTownRadiusGroup(industry->town, tile) << 16 | min(DistanceSquare(tile, industry->town->xy), 0xFFFF);
+
+		/* Count of industry, distance of closest instance
+		 * format is rr(reserved) cc(count)  dddd(manhattan distance of closest sister)
+		 * A lot more should be done, since it has to check for local id, grf id etc...
+		 * let's just say it is a beginning ;) */
+		case 0x67: return GetIndustryTypeCount(industry->type) << 16 | 0;
+
+		/* Industry founder information.
+		 * 0x10 if randomly created or from a map pre-newindustry.
+		 * Else, the company who funded it */
+		case 0xA7: return 0x10;
+
+		case 0xB0: // Date when built since 1920 (in days)
+		case 0xB3: // Construction type
+		case 0xB4: break; // Date last cargo accepted since 1920 (in days)
+
+		/* Industry structure access*/
+		case 0x80: return industry->xy;
+		case 0x81: return GB(industry->xy, 8, 8);
+		/* Pointer to the town the industry is associated with */
+		case 0x82:
+		case 0x83:
+		case 0x84:
+		case 0x85: break; // not supported
+		case 0x86: return industry->width;
+		case 0x87: return industry->height;// xy dimensions
+		/*  */
+		case 0x88:
+		case 0x89: return indspec->produced_cargo[variable - 0x88];
+		case 0x8A: return industry->cargo_waiting[0];
+		case 0x8B: return GB(industry->cargo_waiting[0], 8, 8);
+		case 0x8C: return industry->cargo_waiting[1];
+		case 0x8D: return GB(industry->cargo_waiting[1], 8, 8);
+		case 0x8E:
+		case 0x8F: return industry->production_rate[variable - 0x8E];
+		case 0x90:
+		case 0x91:
+		case 0x92: return indspec->accepts_cargo[variable - 0x90];
+		case 0x93: return industry->prod_level;
+		/* amount of cargo produced so far THIS month. */
+		case 0x94: return industry->this_month_production[0];
+		case 0x95: return GB(industry->this_month_production[0], 8, 8);
+		case 0x96: return industry->this_month_production[1];
+		case 0x97: return GB(industry->this_month_production[1], 8, 8);
+		/* amount of cargo transported so far THIS month. */
+		case 0x98: return industry->this_month_transported[0];
+		case 0x99: return GB(industry->this_month_transported[0], 8, 8);
+		case 0x9A: return industry->this_month_transported[1];
+		case 0x9B: return GB(industry->this_month_transported[0], 8, 8);
+		/* fraction of cargo transported LAST month. */
+		case 0x9C:
+		case 0x9D: return industry->last_month_pct_transported[variable - 0x9C];
+		/* amount of cargo produced LAST month. */
+		case 0x9E: return industry->last_month_production[0];
+		case 0x9F: return GB(industry->last_month_production[0], 8, 8);
+		case 0xA0: return industry->last_month_production[1];
+		case 0xA1: return GB(industry->last_month_production[1], 8, 8);
+		/* amount of cargo transported last month. */
+		case 0xA2: return industry->last_month_transported[0];
+		case 0xA3: return GB(industry->last_month_transported[0], 8, 8);
+		case 0xA4: return industry->last_month_transported[1];
+		case 0xA5: return GB(industry->last_month_transported[0], 8, 8);
+
+		case 0xA6: return industry->type;
+
+		case 0xA8: return industry->random_color;
+		case 0xA9: return industry->last_prod_year; // capped?
+		case 0xAA: return industry->counter;
+		case 0xAB: return GB(industry->counter, 8, 8);
+		case 0xAC: return industry->was_cargo_delivered;
+	}
+
+	DEBUG(grf, 1, "Unhandled industry property 0x%X", variable);
+
+	*available = false;
+	return (uint32)-1;
+}
+
+static const SpriteGroup *IndustryResolveReal(const ResolverObject *object, const SpriteGroup *group)
+{
+	/* IndustryTile do not have 'real' groups */
+	return NULL;
+}
+
+static void NewIndustryResolver(ResolverObject *res, IndustryType ind_id, TileIndex tile, Industry *indus)
+{
+	res->GetRandomBits = NULL;//IndustryTileGetRandomBits;
+	res->GetTriggers   = NULL;//IndustryTileGetTriggers;
+	res->SetTriggers   = NULL;//IndustryTileSetTriggers;
+	res->GetVariable   = IndustryGetVariable;
+	res->ResolveReal   = IndustryResolveReal;
+
+	res->u.industry.tile = tile;
+	res->u.industry.ind  = indus;
+
+	res->callback        = 0;
+	res->callback_param1 = 0;
+	res->callback_param2 = 0;
+	res->last_value      = 0;
+	res->trigger         = 0;
+	res->reseed          = 0;
+}
+
+uint16 GetIndustryCallback(uint16 callback, uint32 param1, uint32 param2, Industry *industry, TileIndex tile)
+{
+	ResolverObject object;
+	const SpriteGroup *group;
+
+	NewIndustryResolver(&object, industry->type, tile, industry);
+	object.callback = callback;
+	object.callback_param1 = param1;
+	object.callback_param2 = param2;
+
+	group = Resolve(GetIndustrySpec(industry->type)->grf_prop.spritegroup, &object);
+	if (group == NULL || group->type != SGT_CALLBACK) return CALLBACK_FAILED;
+
+	return group->g.callback.result;
+}