diff options
Diffstat (limited to 'vehicle.c')
| -rw-r--r-- | vehicle.c | 85 |
1 files changed, 41 insertions, 44 deletions
@@ -33,7 +33,7 @@ #include "yapf/yapf.h" #define INVALID_COORD (-0x8000) -#define GEN_HASH(x,y) (((x & 0x1F80)>>7) + ((y & 0xFC0))) +#define GEN_HASH(x, y) ((GB((y), 6, 6) << 6) + GB((x), 7, 6)) /* * These command macros are used to call vehicle type specific commands with non type specific commands @@ -361,39 +361,33 @@ static VehicleID _vehicle_position_hash[0x1000]; void *VehicleFromPos(TileIndex tile, void *data, VehicleFromPosProc *proc) { - int x,y,x2,y2; Point pt = RemapCoords(TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE, 0); - x2 = ((pt.x + 104) & 0x1F80) >> 7; - x = ((pt.x - 174) & 0x1F80) >> 7; + // The hash area to scan + const int xl = GB(pt.x - 174, 7, 6); + const int xu = GB(pt.x + 104, 7, 6); + const int yl = GB(pt.y - 294, 6, 6) << 6; + const int yu = GB(pt.y + 56, 6, 6) << 6; - y2 = ((pt.y + 56) & 0xFC0); - y = ((pt.y - 294) & 0xFC0); + int x; + int y; - for (;;) { - int xb = x; - for (;;) { + for (y = yl;; y = (y + (1 << 6)) & (0x3F << 6)) { + for (x = xl;; x = (x + 1) & 0x3F) { VehicleID veh = _vehicle_position_hash[(x + y) & 0xFFFF]; + while (veh != INVALID_VEHICLE) { Vehicle *v = GetVehicle(veh); - void *a; + void* a = proc(v, data); - a = proc(v, data); if (a != NULL) return a; veh = v->next_hash; } - if (x == x2) - break; - - x = (x + 1) & 0x3F; + if (x == xu) break; } - x = xb; - - if (y == y2) - break; - y = (y + 0x40) & ((0x3F) << 6); + if (y == yu) break; } return NULL; } @@ -437,7 +431,7 @@ static void UpdateVehiclePosHash(Vehicle* v, int x, int y) void InitializeVehicles(void) { - int i; + uint i; /* Clean the vehicle pool, and reserve enough blocks * for the special vehicles, plus one for all the other @@ -447,8 +441,9 @@ void InitializeVehicles(void) for (i = 0; i < BLOCKS_FOR_SPECIAL_VEHICLES; i++) AddBlockToPool(&_vehicle_pool); - // clear it... - memset(_vehicle_position_hash, -1, sizeof(_vehicle_position_hash)); + for (i = 0; i < lengthof(_vehicle_position_hash); i++) { + _vehicle_position_hash[i] = INVALID_VEHICLE; + } } Vehicle *GetLastVehicleInChain(Vehicle *v) @@ -740,40 +735,42 @@ static void DoDrawVehicle(const Vehicle *v) void ViewportAddVehicles(DrawPixelInfo *dpi) { - int x,xb, y, x2, y2; - VehicleID veh; - Vehicle *v; + // The bounding rectangle + const int l = dpi->left; + const int r = dpi->left + dpi->width; + const int t = dpi->top; + const int b = dpi->top + dpi->height; - x = ((dpi->left - 70) & 0x1F80) >> 7; - x2 = ((dpi->left + dpi->width) & 0x1F80) >> 7; + // The hash area to scan + const int xl = GB(l - 70, 7, 6); + const int xu = GB(r, 7, 6); + const int yl = GB(t - 70, 6, 6) << 6; + const int yu = GB(b, 6, 6) << 6; - y = ((dpi->top - 70) & 0xFC0); - y2 = ((dpi->top + dpi->height) & 0xFC0); + int x; + int y; + + for (y = yl;; y = (y + (1 << 6)) & (0x3F << 6)) { + for (x = xl;; x = (x + 1) & 0x3F) { + VehicleID veh = _vehicle_position_hash[(x + y) & 0xFFFF]; - for (;;) { - xb = x; - for (;;) { - veh = _vehicle_position_hash[(x + y) & 0xFFFF]; while (veh != INVALID_VEHICLE) { - v = GetVehicle(veh); + const Vehicle* v = GetVehicle(veh); if (!(v->vehstatus & VS_HIDDEN) && - dpi->left <= v->right_coord && - dpi->top <= v->bottom_coord && - dpi->left + dpi->width >= v->left_coord && - dpi->top + dpi->height >= v->top_coord) { + l <= v->right_coord && + t <= v->bottom_coord && + r >= v->left_coord && + b >= v->top_coord) { DoDrawVehicle(v); } veh = v->next_hash; } - if (x == x2) break; - x = (x + 1) & 0x3F; + if (x == xu) break; } - x = xb; - if (y == y2) break; - y = (y + 0x40) & ((0x3F) << 6); + if (y == yu) break; } } |