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-rw-r--r--src/clear_cmd.cpp456
-rw-r--r--src/terraform_cmd.cpp411
-rw-r--r--src/terraform_gui.cpp1
-rw-r--r--src/unmovable_cmd.cpp53
-rw-r--r--src/unmovable_map.h3
-rw-r--r--src/variables.h1
6 files changed, 469 insertions, 456 deletions
diff --git a/src/clear_cmd.cpp b/src/clear_cmd.cpp
index 73183c504..d7c7e7e49 100644
--- a/src/clear_cmd.cpp
+++ b/src/clear_cmd.cpp
@@ -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);
diff --git a/src/terraform_cmd.cpp b/src/terraform_cmd.cpp
new file mode 100644
index 000000000..138506231
--- /dev/null
+++ b/src/terraform_cmd.cpp
@@ -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;
+}
diff --git a/src/terraform_gui.cpp b/src/terraform_gui.cpp
index f33db131a..f074d64eb 100644
--- a/src/terraform_gui.cpp
+++ b/src/terraform_gui.cpp
@@ -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);
}
}
diff --git a/src/unmovable_cmd.cpp b/src/unmovable_cmd.cpp
index ef4638d23..d11020421 100644
--- a/src/unmovable_cmd.cpp
+++ b/src/unmovable_cmd.cpp
@@ -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)
diff --git a/src/unmovable_map.h b/src/unmovable_map.h
index 0b3132ce0..0f6283cb7 100644
--- a/src/unmovable_map.h
+++ b/src/unmovable_map.h
@@ -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
diff --git a/src/variables.h b/src/variables.h
index 6532ad453..aaf62c9a8 100644
--- a/src/variables.h
+++ b/src/variables.h
@@ -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;