cpp/openttd-patchpack/source Files · src/newgrf_town.cpp

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maedhros

(svn r9613) -Feature: Make it possible to have some control over the town growth. The
default rate is TTD's original rate, and to approximate OpenTTD's previous
behaviour the rate should be set to "Fast" or "Very Fast". Town growth can be
switched off entirely, and if so, buildings will not be rebuilt. It is also
possible to specify a proportion of towns that grow twice as fast as the
others.

/* $Id$ */

/** @file newgrf_town.cpp */

#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "functions.h"
#include "town.h"

/** This function implements the town 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 t is of course the town we are inquiring
 * @return the value stored in the corresponding variable*/
uint32 TownGetVariable(byte variable, byte parameter, bool *available, const Town *t)
{
	switch (variable) {
		/* Larger towns */
		case 0x40: return 1;

		/* Town index */
		case 0x41: return t->index;

		/* Town properties */
		case 0x80: return t->xy;
		case 0x81: return GB(t->xy, 8, 8);
		case 0x82: return t->population;
		case 0x83: return GB(t->population, 8, 8);
		case 0x8A: return t->grow_counter;
		case 0x92: return t->flags12;  // In original game, 0x92 and 0x93 are really one word. Since flags12 is a byte, this is to adjust
		case 0x93: return 0;
		case 0x94: return t->radius[0];
		case 0x95: return GB(t->radius[0], 8, 8);
		case 0x96: return t->radius[1];
		case 0x97: return GB(t->radius[1], 8, 8);
		case 0x98: return t->radius[2];
		case 0x99: return GB(t->radius[2], 8, 8);
		case 0x9A: return t->radius[3];
		case 0x9B: return GB(t->radius[3], 8, 8);
		case 0x9C: return t->radius[4];
		case 0x9D: return GB(t->radius[4], 8, 8);
		case 0x9E: return t->ratings[0];
		case 0x9F: return t->ratings[1];
		case 0xA0: return t->ratings[2];
		case 0xA1: return t->ratings[3];
		case 0xA2: return t->ratings[4];
		case 0xA3: return t->ratings[5];
		case 0xA4: return t->ratings[6];
		case 0xA5: return t->ratings[7];
		case 0xA6: return t->ratings[8];
		case 0xAE: return t->have_ratings;
		case 0xB2: return t->statues;
		case 0xB6: return t->num_houses;
		case 0xB9: return t->growth_rate;
		case 0xBA: return t->new_max_pass;
		case 0xBB: return GB(t->new_max_pass, 8, 8);
		case 0xBC: return t->new_max_mail;
		case 0xBD: return GB(t->new_max_mail, 8, 8);
		case 0xBE: return t->new_act_pass;
		case 0xBF: return GB(t->new_act_pass, 8, 8);
		case 0xC0: return t->new_act_mail;
		case 0xC1: return GB(t->new_act_mail, 8, 8);
		case 0xC2: return t->max_pass;
		case 0xC3: return GB(t->max_pass, 8, 8);
		case 0xC4: return t->max_mail;
		case 0xC5: return GB(t->max_mail, 8, 8);
		case 0xC6: return t->act_pass;
		case 0xC7: return GB(t->act_pass, 8, 8);
		case 0xC8: return t->act_mail;
		case 0xC9: return GB(t->act_mail, 8, 8);
		case 0xCA: return t->pct_pass_transported;
		case 0xCB: return t->pct_mail_transported;
		case 0xCC: return t->new_act_food;
		case 0xCD: return GB(t->new_act_food, 8, 8);
		case 0xCE: return t->new_act_water;
		case 0xCF: return GB(t->new_act_water, 8, 8);
		case 0xD0: return t->act_food;
		case 0xD1: return GB(t->act_food, 8, 8);
		case 0xD2: return t->act_water;
		case 0xD3: return GB(t->act_water, 8, 8);
		case 0xD4: return t->road_build_months;
		case 0xD5: return t->fund_buildings_months;
	}

	DEBUG(grf, 1, "Unhandled town property 0x%X", variable);

	*available = false;
	return (uint32)-1;
}