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(svn r11773) -Codechange: move some non-clear-land functions from clear_cmd.cpp to a more correct location.

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rubidium 2008-01-07 00:45:05 +00:00
parent 119b03ea70
commit 64fc2ade9e
6 changed files with 469 additions and 456 deletions
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456
src/clear_cmd.cpp
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@ -5,13 +5,10 @@
#include "stdafx.h"
#include "openttd.h"
#include "clear_map.h"
#include "rail_map.h"
#include "table/strings.h"
#include "player.h"
#include "viewport.h"
#include "command_func.h"
#include "tunnel_map.h"
#include "bridge_map.h"
#include "bridge.h"
#include "landscape.h"
#include "variables.h"
@ -23,431 +20,7 @@
#include "tile_cmd.h"
#include "functions.h"
#include "economy_func.h"
#include "vehicle_func.h"
/*
* In one terraforming command all four corners of a initial tile can be raised/lowered (though this is not available to the player).
* The maximal amount of height modifications is archieved when raising a complete flat land from sea level to MAX_TILE_HEIGHT or vice versa.
* This affects all corners with a manhatten distance smaller than MAX_TILE_HEIGHT to one of the initial 4 corners.
* Their maximal amount is computed to 4 * \sum_{i=1}^{h_max} i = 2 * h_max * (h_max + 1).
*/
static const int TERRAFORMER_MODHEIGHT_SIZE = 2 * MAX_TILE_HEIGHT * (MAX_TILE_HEIGHT + 1);
/*
* The maximal amount of affected tiles (i.e. the tiles that incident with one of the corners above, is computed similiar to
* 1 + 4 * \sum_{i=1}^{h_max} (i+1) = 1 + 2 * h_max + (h_max + 3).
*/
static const int TERRAFORMER_TILE_TABLE_SIZE = 1 + 2 * MAX_TILE_HEIGHT * (MAX_TILE_HEIGHT + 3);
struct TerraformerHeightMod {
TileIndex tile; ///< Referenced tile.
byte height; ///< New TileHeight (height of north corner) of the tile.
};
struct TerraformerState {
int modheight_count; ///< amount of entries in "modheight".
int tile_table_count; ///< amount of entries in "tile_table".
/**
* Dirty tiles, i.e.\ at least one corner changed.
*
* This array contains the tiles which are or will be marked as dirty.
*
* @ingroup dirty
*/
TileIndex tile_table[TERRAFORMER_TILE_TABLE_SIZE];
TerraformerHeightMod modheight[TERRAFORMER_MODHEIGHT_SIZE]; ///< Height modifications.
};
/**
* Gets the TileHeight (height of north corner) of a tile as of current terraforming progress.
*
* @param ts TerraformerState.
* @param tile Tile.
* @return TileHeight.
*/
static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)
{
TerraformerHeightMod *mod = ts->modheight;
int count;
for (count = ts->modheight_count; count != 0; count--, mod++) {
if (mod->tile == tile) return mod->height;
}
/* TileHeight unchanged so far, read value from map. */
return TileHeight(tile);
}
/**
* Stores the TileHeight (height of north corner) of a tile in a TerraformerState.
*
* @param ts TerraformerState.
* @param tile Tile.
* @param height New TileHeight.
*/
static void TerraformSetHeightOfTile(TerraformerState *ts, TileIndex tile, int height)
{
/* Find tile in the "modheight" table.
* Note: In a normal user-terraform command the tile will not be found in the "modheight" table.
* But during house- or industry-construction multiple corners can be terraformed at once. */
TerraformerHeightMod *mod = ts->modheight;
int count = ts->modheight_count;
while ((count > 0) && (mod->tile != tile)) {
mod++;
count--;
}
/* New entry? */
if (count == 0) {
assert(ts->modheight_count < TERRAFORMER_MODHEIGHT_SIZE);
ts->modheight_count++;
}
/* Finally store the new value */
mod->tile = tile;
mod->height = (byte)height;
}
/**
* Adds a tile to the "tile_table" in a TerraformerState.
*
* @param ts TerraformerState.
* @param tile Tile.
* @ingroup dirty
*/
static void TerraformAddDirtyTile(TerraformerState *ts, TileIndex tile)
{
int count;
TileIndex *t;
count = ts->tile_table_count;
for (t = ts->tile_table; count != 0; count--, t++) {
if (*t == tile) return;
}
assert(ts->tile_table_count < TERRAFORMER_TILE_TABLE_SIZE);
ts->tile_table[ts->tile_table_count++] = tile;
}
/**
* Adds all tiles that incident with the north corner of a specific tile to the "tile_table" in a TerraformerState.
*
* @param ts TerraformerState.
* @param tile Tile.
* @ingroup dirty
*/
static void TerraformAddDirtyTileAround(TerraformerState *ts, TileIndex tile)
{
TerraformAddDirtyTile(ts, tile + TileDiffXY( 0, -1));
TerraformAddDirtyTile(ts, tile + TileDiffXY(-1, -1));
TerraformAddDirtyTile(ts, tile + TileDiffXY(-1, 0));
TerraformAddDirtyTile(ts, tile);
}
/**
* Terraform the north corner of a tile to a specific height.
*
* @param ts TerraformerState.
* @param tile Tile.
* @param height Aimed height.
* @param return Error code or cost.
*/
static CommandCost TerraformTileHeight(TerraformerState *ts, TileIndex tile, int height)
{
CommandCost total_cost = CommandCost();
assert(tile < MapSize());
/* Check range of destination height */
if (height < 0) return_cmd_error(STR_1003_ALREADY_AT_SEA_LEVEL);
if (height > MAX_TILE_HEIGHT) return_cmd_error(STR_1004_TOO_HIGH);
/*
* Check if the terraforming has any effect.
* This can only be true, if multiple corners of the start-tile are terraformed (i.e. the terraforming is done by towns/industries etc.).
* In this case the terraforming should fail. (Don't know why.)
*/
if (height == TerraformGetHeightOfTile(ts, tile)) return CMD_ERROR;
/* Check "too close to edge of map" */
uint x = TileX(tile);
uint y = TileY(tile);
if ((x <= 1) || (y <= 1) || (x >= MapMaxX() - 1) || (y >= MapMaxY() - 1)) {
/*
* Determine a sensible error tile
* Note: If x and y are both zero this will disable the error tile. (Tile 0 cannot be highlighted :( )
*/
if ((x == 1) && (y != 0)) x = 0;
if ((y == 1) && (x != 0)) y = 0;
_terraform_err_tile = TileXY(x, y);
return_cmd_error(STR_0002_TOO_CLOSE_TO_EDGE_OF_MAP);
}
/* Mark incident tiles, that are involved in the terraforming */
TerraformAddDirtyTileAround(ts, tile);
/* Store the height modification */
TerraformSetHeightOfTile(ts, tile, height);
/* Increment cost */
total_cost.AddCost(_price.terraform);
/* Recurse to neighboured corners if height difference is larger than 1 */
{
const TileIndexDiffC *ttm;
static const TileIndexDiffC _terraform_tilepos[] = {
{ 1, 0}, // move to tile in SE
{-2, 0}, // undo last move, and move to tile in NW
{ 1, 1}, // undo last move, and move to tile in SW
{ 0, -2} // undo last move, and move to tile in NE
};
for (ttm = _terraform_tilepos; ttm != endof(_terraform_tilepos); ttm++) {
tile += ToTileIndexDiff(*ttm);
/* Get TileHeight of neighboured tile as of current terraform progress */
int r = TerraformGetHeightOfTile(ts, tile);
int height_diff = height - r;
/* Is the height difference to the neighboured corner greater than 1? */
if (abs(height_diff) > 1) {
/* Terraform the neighboured corner. The resulting height difference should be 1. */
height_diff += (height_diff < 0 ? 1 : -1);
CommandCost cost = TerraformTileHeight(ts, tile, r + height_diff);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
}
}
return total_cost;
}
/** Terraform land
* @param tile tile to terraform
* @param flags for this command type
* @param p1 corners to terraform (SLOPE_xxx)
* @param p2 direction; eg up (non-zero) or down (zero)
* @return error or cost of terraforming
*/
CommandCost CmdTerraformLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
TerraformerState ts;
CommandCost total_cost = CommandCost();
int direction = (p2 != 0 ? 1 : -1);
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
_terraform_err_tile = 0;
ts.modheight_count = ts.tile_table_count = 0;
/* Make an extra check for map-bounds cause we add tiles to the originating tile */
if (tile + TileDiffXY(1, 1) >= MapSize()) return CMD_ERROR;
/* Compute the costs and the terraforming result in a model of the landscape */
if ((p1 & SLOPE_W) != 0) {
TileIndex t = tile + TileDiffXY(1, 0);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
if ((p1 & SLOPE_S) != 0) {
TileIndex t = tile + TileDiffXY(1, 1);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
if ((p1 & SLOPE_E) != 0) {
TileIndex t = tile + TileDiffXY(0, 1);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
if ((p1 & SLOPE_N) != 0) {
TileIndex t = tile + TileDiffXY(0, 0);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
/* Check if the terraforming is valid wrt. tunnels, bridges and objects on the surface */
{
int count;
TileIndex *ti = ts.tile_table;
for (count = ts.tile_table_count; count != 0; count--, ti++) {
TileIndex tile = *ti;
/* Find new heights of tile corners */
uint z_N = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 0));
uint z_W = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 0));
uint z_S = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 1));
uint z_E = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 1));
/* Find min and max height of tile */
uint z_min = min(min(z_N, z_W), min(z_S, z_E));
uint z_max = max(max(z_N, z_W), max(z_S, z_E));
/* Compute tile slope */
uint tileh = (z_max > z_min + 1 ? SLOPE_STEEP : SLOPE_FLAT);
if (z_W > z_min) tileh += SLOPE_W;
if (z_S > z_min) tileh += SLOPE_S;
if (z_E > z_min) tileh += SLOPE_E;
if (z_N > z_min) tileh += SLOPE_N;
/* Check if bridge would take damage */
if (direction == 1 && MayHaveBridgeAbove(tile) && IsBridgeAbove(tile) &&
GetBridgeHeight(GetSouthernBridgeEnd(tile)) <= z_max * TILE_HEIGHT) {
_terraform_err_tile = tile; // highlight the tile under the bridge
return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
}
/* Check if tunnel would take damage */
if (direction == -1 && IsTunnelInWay(tile, z_min * TILE_HEIGHT)) {
_terraform_err_tile = tile; // highlight the tile above the tunnel
return_cmd_error(STR_1002_EXCAVATION_WOULD_DAMAGE);
}
/* Check tiletype-specific things, and add extra-cost */
CommandCost cost = _tile_type_procs[GetTileType(tile)]->terraform_tile_proc(tile, flags | DC_AUTO, z_min * TILE_HEIGHT, (Slope) tileh);
if (CmdFailed(cost)) {
_terraform_err_tile = tile;
return cost;
}
total_cost.AddCost(cost);
}
}
if (flags & DC_EXEC) {
/* change the height */
{
int count;
TerraformerHeightMod *mod;
mod = ts.modheight;
for (count = ts.modheight_count; count != 0; count--, mod++) {
TileIndex til = mod->tile;
SetTileHeight(til, mod->height);
}
}
/* finally mark the dirty tiles dirty */
{
int count;
TileIndex *ti = ts.tile_table;
for (count = ts.tile_table_count; count != 0; count--, ti++) {
MarkTileDirtyByTile(*ti);
}
}
}
return total_cost;
}
/** Levels a selected (rectangle) area of land
* @param tile end tile of area-drag
* @param flags for this command type
* @param p1 start tile of area drag
* @param p2 height difference; eg raise (+1), lower (-1) or level (0)
* @return error or cost of terraforming
*/
CommandCost CmdLevelLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
int size_x, size_y;
int ex;
int ey;
int sx, sy;
uint h, oldh, curh;
CommandCost money;
CommandCost ret;
CommandCost cost;
if (p1 >= MapSize()) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
/* remember level height */
oldh = TileHeight(p1);
/* compute new height */
h = oldh + p2;
/* Check range of destination height */
if (h > MAX_TILE_HEIGHT) return_cmd_error((oldh == 0) ? STR_1003_ALREADY_AT_SEA_LEVEL : STR_1004_TOO_HIGH);
/* make sure sx,sy are smaller than ex,ey */
ex = TileX(tile);
ey = TileY(tile);
sx = TileX(p1);
sy = TileY(p1);
if (ex < sx) Swap(ex, sx);
if (ey < sy) Swap(ey, sy);
tile = TileXY(sx, sy);
size_x = ex - sx + 1;
size_y = ey - sy + 1;
money.AddCost(GetAvailableMoneyForCommand());
BEGIN_TILE_LOOP(tile2, size_x, size_y, tile) {
curh = TileHeight(tile2);
while (curh != h) {
ret = DoCommand(tile2, SLOPE_N, (curh > h) ? 0 : 1, flags & ~DC_EXEC, CMD_TERRAFORM_LAND);
if (CmdFailed(ret)) break;
if (flags & DC_EXEC) {
money.AddCost(-ret.GetCost());
if (money.GetCost() < 0) {
_additional_cash_required = ret.GetCost();
return cost;
}
DoCommand(tile2, SLOPE_N, (curh > h) ? 0 : 1, flags, CMD_TERRAFORM_LAND);
}
cost.AddCost(ret);
curh += (curh > h) ? -1 : 1;
}
} END_TILE_LOOP(tile2, size_x, size_y, tile)
return (cost.GetCost() == 0) ? CMD_ERROR : cost;
}
/** Purchase a land area. Actually you only purchase one tile, so
* the name is a bit confusing ;p
* @param tile the tile the player is purchasing
* @param flags for this command type
* @param p1 unused
* @param p2 unused
* @return error of cost of operation
*/
CommandCost CmdPurchaseLandArea(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
CommandCost cost;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (IsOwnedLandTile(tile) && IsTileOwner(tile, _current_player)) {
return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);
}
cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(cost)) return CMD_ERROR;
if (flags & DC_EXEC) {
MakeOwnedLand(tile, _current_player);
MarkTileDirtyByTile(tile);
}
return cost.AddCost(_price.clear_roughland * 10);
}
#include "table/clear_land.h"
static CommandCost ClearTile_Clear(TileIndex tile, byte flags)
{
@ -470,33 +43,6 @@ static CommandCost ClearTile_Clear(TileIndex tile, byte flags)
return price;
}
/** Sell a land area. Actually you only sell one tile, so
* the name is a bit confusing ;p
* @param tile the tile the player is selling
* @param flags for this command type
* @param p1 unused
* @param p2 unused
* @return error or cost of operation
*/
CommandCost CmdSellLandArea(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (!IsOwnedLandTile(tile)) return CMD_ERROR;
if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER) return CMD_ERROR;
if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
if (flags & DC_EXEC) DoClearSquare(tile);
return CommandCost(- _price.clear_roughland * 2);
}
#include "table/clear_land.h"
void DrawClearLandTile(const TileInfo *ti, byte set)
{
DrawGroundSprite(SPR_FLAT_BARE_LAND + _tileh_to_sprite[ti->tileh] + set * 19, PAL_NONE);

411
src/terraform_cmd.cpp Normal file
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@ -0,0 +1,411 @@
/* $Id$ */
/** @file terraform_cmd.cpp Commands related to terraforming. */
#include "stdafx.h"
#include "openttd.h"
#include "strings_type.h"
#include "table/strings.h"
#include "command_func.h"
#include "tile_map.h"
#include "tunnel_map.h"
#include "bridge_map.h"
#include "variables.h"
#include "functions.h"
#include "economy_func.h"
/*
* In one terraforming command all four corners of a initial tile can be raised/lowered (though this is not available to the player).
* The maximal amount of height modifications is archieved when raising a complete flat land from sea level to MAX_TILE_HEIGHT or vice versa.
* This affects all corners with a manhatten distance smaller than MAX_TILE_HEIGHT to one of the initial 4 corners.
* Their maximal amount is computed to 4 * \sum_{i=1}^{h_max} i = 2 * h_max * (h_max + 1).
*/
static const int TERRAFORMER_MODHEIGHT_SIZE = 2 * MAX_TILE_HEIGHT * (MAX_TILE_HEIGHT + 1);
/*
* The maximal amount of affected tiles (i.e. the tiles that incident with one of the corners above, is computed similiar to
* 1 + 4 * \sum_{i=1}^{h_max} (i+1) = 1 + 2 * h_max + (h_max + 3).
*/
static const int TERRAFORMER_TILE_TABLE_SIZE = 1 + 2 * MAX_TILE_HEIGHT * (MAX_TILE_HEIGHT + 3);
struct TerraformerHeightMod {
TileIndex tile; ///< Referenced tile.
byte height; ///< New TileHeight (height of north corner) of the tile.
};
struct TerraformerState {
int modheight_count; ///< amount of entries in "modheight".
int tile_table_count; ///< amount of entries in "tile_table".
/**
* Dirty tiles, i.e.\ at least one corner changed.
*
* This array contains the tiles which are or will be marked as dirty.
*
* @ingroup dirty
*/
TileIndex tile_table[TERRAFORMER_TILE_TABLE_SIZE];
TerraformerHeightMod modheight[TERRAFORMER_MODHEIGHT_SIZE]; ///< Height modifications.
};
TileIndex _terraform_err_tile;
/**
* Gets the TileHeight (height of north corner) of a tile as of current terraforming progress.
*
* @param ts TerraformerState.
* @param tile Tile.
* @return TileHeight.
*/
static int TerraformGetHeightOfTile(TerraformerState *ts, TileIndex tile)
{
TerraformerHeightMod *mod = ts->modheight;
int count;
for (count = ts->modheight_count; count != 0; count--, mod++) {
if (mod->tile == tile) return mod->height;
}
/* TileHeight unchanged so far, read value from map. */
return TileHeight(tile);
}
/**
* Stores the TileHeight (height of north corner) of a tile in a TerraformerState.
*
* @param ts TerraformerState.
* @param tile Tile.
* @param height New TileHeight.
*/
static void TerraformSetHeightOfTile(TerraformerState *ts, TileIndex tile, int height)
{
/* Find tile in the "modheight" table.
* Note: In a normal user-terraform command the tile will not be found in the "modheight" table.
* But during house- or industry-construction multiple corners can be terraformed at once. */
TerraformerHeightMod *mod = ts->modheight;
int count = ts->modheight_count;
while ((count > 0) && (mod->tile != tile)) {
mod++;
count--;
}
/* New entry? */
if (count == 0) {
assert(ts->modheight_count < TERRAFORMER_MODHEIGHT_SIZE);
ts->modheight_count++;
}
/* Finally store the new value */
mod->tile = tile;
mod->height = (byte)height;
}
/**
* Adds a tile to the "tile_table" in a TerraformerState.
*
* @param ts TerraformerState.
* @param tile Tile.
* @ingroup dirty
*/
static void TerraformAddDirtyTile(TerraformerState *ts, TileIndex tile)
{
int count;
TileIndex *t;
count = ts->tile_table_count;
for (t = ts->tile_table; count != 0; count--, t++) {
if (*t == tile) return;
}
assert(ts->tile_table_count < TERRAFORMER_TILE_TABLE_SIZE);
ts->tile_table[ts->tile_table_count++] = tile;
}
/**
* Adds all tiles that incident with the north corner of a specific tile to the "tile_table" in a TerraformerState.
*
* @param ts TerraformerState.
* @param tile Tile.
* @ingroup dirty
*/
static void TerraformAddDirtyTileAround(TerraformerState *ts, TileIndex tile)
{
TerraformAddDirtyTile(ts, tile + TileDiffXY( 0, -1));
TerraformAddDirtyTile(ts, tile + TileDiffXY(-1, -1));
TerraformAddDirtyTile(ts, tile + TileDiffXY(-1, 0));
TerraformAddDirtyTile(ts, tile);
}
/**
* Terraform the north corner of a tile to a specific height.
*
* @param ts TerraformerState.
* @param tile Tile.
* @param height Aimed height.
* @param return Error code or cost.
*/
static CommandCost TerraformTileHeight(TerraformerState *ts, TileIndex tile, int height)
{
CommandCost total_cost = CommandCost();
assert(tile < MapSize());
/* Check range of destination height */
if (height < 0) return_cmd_error(STR_1003_ALREADY_AT_SEA_LEVEL);
if (height > MAX_TILE_HEIGHT) return_cmd_error(STR_1004_TOO_HIGH);
/*
* Check if the terraforming has any effect.
* This can only be true, if multiple corners of the start-tile are terraformed (i.e. the terraforming is done by towns/industries etc.).
* In this case the terraforming should fail. (Don't know why.)
*/
if (height == TerraformGetHeightOfTile(ts, tile)) return CMD_ERROR;
/* Check "too close to edge of map" */
uint x = TileX(tile);
uint y = TileY(tile);
if ((x <= 1) || (y <= 1) || (x >= MapMaxX() - 1) || (y >= MapMaxY() - 1)) {
/*
* Determine a sensible error tile
* Note: If x and y are both zero this will disable the error tile. (Tile 0 cannot be highlighted :( )
*/
if ((x == 1) && (y != 0)) x = 0;
if ((y == 1) && (x != 0)) y = 0;
_terraform_err_tile = TileXY(x, y);
return_cmd_error(STR_0002_TOO_CLOSE_TO_EDGE_OF_MAP);
}
/* Mark incident tiles, that are involved in the terraforming */
TerraformAddDirtyTileAround(ts, tile);
/* Store the height modification */
TerraformSetHeightOfTile(ts, tile, height);
/* Increment cost */
total_cost.AddCost(_price.terraform);
/* Recurse to neighboured corners if height difference is larger than 1 */
{
const TileIndexDiffC *ttm;
static const TileIndexDiffC _terraform_tilepos[] = {
{ 1, 0}, // move to tile in SE
{-2, 0}, // undo last move, and move to tile in NW
{ 1, 1}, // undo last move, and move to tile in SW
{ 0, -2} // undo last move, and move to tile in NE
};
for (ttm = _terraform_tilepos; ttm != endof(_terraform_tilepos); ttm++) {
tile += ToTileIndexDiff(*ttm);
/* Get TileHeight of neighboured tile as of current terraform progress */
int r = TerraformGetHeightOfTile(ts, tile);
int height_diff = height - r;
/* Is the height difference to the neighboured corner greater than 1? */
if (abs(height_diff) > 1) {
/* Terraform the neighboured corner. The resulting height difference should be 1. */
height_diff += (height_diff < 0 ? 1 : -1);
CommandCost cost = TerraformTileHeight(ts, tile, r + height_diff);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
}
}
return total_cost;
}
/** Terraform land
* @param tile tile to terraform
* @param flags for this command type
* @param p1 corners to terraform (SLOPE_xxx)
* @param p2 direction; eg up (non-zero) or down (zero)
* @return error or cost of terraforming
*/
CommandCost CmdTerraformLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
TerraformerState ts;
CommandCost total_cost = CommandCost();
int direction = (p2 != 0 ? 1 : -1);
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
_terraform_err_tile = 0;
ts.modheight_count = ts.tile_table_count = 0;
/* Make an extra check for map-bounds cause we add tiles to the originating tile */
if (tile + TileDiffXY(1, 1) >= MapSize()) return CMD_ERROR;
/* Compute the costs and the terraforming result in a model of the landscape */
if ((p1 & SLOPE_W) != 0) {
TileIndex t = tile + TileDiffXY(1, 0);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
if ((p1 & SLOPE_S) != 0) {
TileIndex t = tile + TileDiffXY(1, 1);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
if ((p1 & SLOPE_E) != 0) {
TileIndex t = tile + TileDiffXY(0, 1);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
if ((p1 & SLOPE_N) != 0) {
TileIndex t = tile + TileDiffXY(0, 0);
CommandCost cost = TerraformTileHeight(&ts, t, TileHeight(t) + direction);
if (CmdFailed(cost)) return cost;
total_cost.AddCost(cost);
}
/* Check if the terraforming is valid wrt. tunnels, bridges and objects on the surface */
{
int count;
TileIndex *ti = ts.tile_table;
for (count = ts.tile_table_count; count != 0; count--, ti++) {
TileIndex tile = *ti;
/* Find new heights of tile corners */
uint z_N = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 0));
uint z_W = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 0));
uint z_S = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(1, 1));
uint z_E = TerraformGetHeightOfTile(&ts, tile + TileDiffXY(0, 1));
/* Find min and max height of tile */
uint z_min = min(min(z_N, z_W), min(z_S, z_E));
uint z_max = max(max(z_N, z_W), max(z_S, z_E));
/* Compute tile slope */
uint tileh = (z_max > z_min + 1 ? SLOPE_STEEP : SLOPE_FLAT);
if (z_W > z_min) tileh += SLOPE_W;
if (z_S > z_min) tileh += SLOPE_S;
if (z_E > z_min) tileh += SLOPE_E;
if (z_N > z_min) tileh += SLOPE_N;
/* Check if bridge would take damage */
if (direction == 1 && MayHaveBridgeAbove(tile) && IsBridgeAbove(tile) &&
GetBridgeHeight(GetSouthernBridgeEnd(tile)) <= z_max * TILE_HEIGHT) {
_terraform_err_tile = tile; // highlight the tile under the bridge
return_cmd_error(STR_5007_MUST_DEMOLISH_BRIDGE_FIRST);
}
/* Check if tunnel would take damage */
if (direction == -1 && IsTunnelInWay(tile, z_min * TILE_HEIGHT)) {
_terraform_err_tile = tile; // highlight the tile above the tunnel
return_cmd_error(STR_1002_EXCAVATION_WOULD_DAMAGE);
}
/* Check tiletype-specific things, and add extra-cost */
CommandCost cost = _tile_type_procs[GetTileType(tile)]->terraform_tile_proc(tile, flags | DC_AUTO, z_min * TILE_HEIGHT, (Slope) tileh);
if (CmdFailed(cost)) {
_terraform_err_tile = tile;
return cost;
}
total_cost.AddCost(cost);
}
}
if (flags & DC_EXEC) {
/* change the height */
{
int count;
TerraformerHeightMod *mod;
mod = ts.modheight;
for (count = ts.modheight_count; count != 0; count--, mod++) {
TileIndex til = mod->tile;
SetTileHeight(til, mod->height);
}
}
/* finally mark the dirty tiles dirty */
{
int count;
TileIndex *ti = ts.tile_table;
for (count = ts.tile_table_count; count != 0; count--, ti++) {
MarkTileDirtyByTile(*ti);
}
}
}
return total_cost;
}
/** Levels a selected (rectangle) area of land
* @param tile end tile of area-drag
* @param flags for this command type
* @param p1 start tile of area drag
* @param p2 height difference; eg raise (+1), lower (-1) or level (0)
* @return error or cost of terraforming
*/
CommandCost CmdLevelLand(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
int size_x, size_y;
int ex;
int ey;
int sx, sy;
uint h, oldh, curh;
CommandCost money;
CommandCost ret;
CommandCost cost;
if (p1 >= MapSize()) return CMD_ERROR;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
/* remember level height */
oldh = TileHeight(p1);
/* compute new height */
h = oldh + p2;
/* Check range of destination height */
if (h > MAX_TILE_HEIGHT) return_cmd_error((oldh == 0) ? STR_1003_ALREADY_AT_SEA_LEVEL : STR_1004_TOO_HIGH);
/* make sure sx,sy are smaller than ex,ey */
ex = TileX(tile);
ey = TileY(tile);
sx = TileX(p1);
sy = TileY(p1);
if (ex < sx) Swap(ex, sx);
if (ey < sy) Swap(ey, sy);
tile = TileXY(sx, sy);
size_x = ex - sx + 1;
size_y = ey - sy + 1;
money.AddCost(GetAvailableMoneyForCommand());
BEGIN_TILE_LOOP(tile2, size_x, size_y, tile) {
curh = TileHeight(tile2);
while (curh != h) {
ret = DoCommand(tile2, SLOPE_N, (curh > h) ? 0 : 1, flags & ~DC_EXEC, CMD_TERRAFORM_LAND);
if (CmdFailed(ret)) break;
if (flags & DC_EXEC) {
money.AddCost(-ret.GetCost());
if (money.GetCost() < 0) {
_additional_cash_required = ret.GetCost();
return cost;
}
DoCommand(tile2, SLOPE_N, (curh > h) ? 0 : 1, flags, CMD_TERRAFORM_LAND);
}
cost.AddCost(ret);
curh += (curh > h) ? -1 : 1;
}
} END_TILE_LOOP(tile2, size_x, size_y, tile)
return (cost.GetCost() == 0) ? CMD_ERROR : cost;
}

1
src/terraform_gui.cpp
View File

@ -26,6 +26,7 @@ void CcTerraform(bool success, TileIndex tile, uint32 p1, uint32 p2)
if (success) {
SndPlayTileFx(SND_1F_SPLAT, tile);
} else {
extern TileIndex _terraform_err_tile;
SetRedErrorSquare(_terraform_err_tile);
}
}

53
src/unmovable_cmd.cpp
View File

@ -25,6 +25,7 @@
#include "transparency.h"
#include "functions.h"
#include "window_func.h"
#include "vehicle_func.h"
/** Destroy a HQ.
* During normal gameplay you can only implicitely destroy a HQ when you are
@ -111,6 +112,58 @@ CommandCost CmdBuildCompanyHQ(TileIndex tile, uint32 flags, uint32 p1, uint32 p2
return cost;
}
/** Purchase a land area. Actually you only purchase one tile, so
* the name is a bit confusing ;p
* @param tile the tile the player is purchasing
* @param flags for this command type
* @param p1 unused
* @param p2 unused
* @return error of cost of operation
*/
CommandCost CmdPurchaseLandArea(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
CommandCost cost;
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (IsOwnedLandTile(tile) && IsTileOwner(tile, _current_player)) {
return_cmd_error(STR_5807_YOU_ALREADY_OWN_IT);
}
cost = DoCommand(tile, 0, 0, flags, CMD_LANDSCAPE_CLEAR);
if (CmdFailed(cost)) return CMD_ERROR;
if (flags & DC_EXEC) {
MakeOwnedLand(tile, _current_player);
MarkTileDirtyByTile(tile);
}
return cost.AddCost(_price.clear_roughland * 10);
}
/** Sell a land area. Actually you only sell one tile, so
* the name is a bit confusing ;p
* @param tile the tile the player is selling
* @param flags for this command type
* @param p1 unused
* @param p2 unused
* @return error or cost of operation
*/
CommandCost CmdSellLandArea(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
{
SET_EXPENSES_TYPE(EXPENSES_CONSTRUCTION);
if (!IsOwnedLandTile(tile)) return CMD_ERROR;
if (!CheckTileOwnership(tile) && _current_player != OWNER_WATER) return CMD_ERROR;
if (!EnsureNoVehicleOnGround(tile)) return CMD_ERROR;
if (flags & DC_EXEC) DoClearSquare(tile);
return CommandCost(- _price.clear_roughland * 2);
}
static Foundation GetFoundation_Unmovable(TileIndex tile, Slope tileh);
static void DrawTile_Unmovable(TileInfo *ti)

3
src/unmovable_map.h
View File

@ -5,6 +5,9 @@
#ifndef UNMOVABLE_MAP_H
#define UNMOVABLE_MAP_H
#include "core/bitmath_func.hpp"
#include "tile_map.h"
enum {
HQ_NUM_TILE = 4, ///< Number of HQ tiles
HQ_NUM_SIZE = 5 ///< Number of stages of an HQ

1
src/variables.h
View File

@ -90,7 +90,6 @@ VARDEF PlayerFace _player_face; ///< for player face storage in openttd.cfg
/* IN/OUT parameters to commands */
VARDEF byte _yearly_expenses_type;
VARDEF TileIndex _terraform_err_tile;
VARDEF TileIndex _build_tunnel_endtile;
VARDEF bool _generating_world;