Annotation of micropolis/src/sim/g_bigmap.c, revision 1.1.1.1

1.1       root        1: /* g_bigmap.c
                      2:  *
                      3:  * Micropolis, Unix Version.  This game was released for the Unix platform
                      4:  * in or about 1990 and has been modified for inclusion in the One Laptop
                      5:  * Per Child program.  Copyright (C) 1989 - 2007 Electronic Arts Inc.  If
                      6:  * you need assistance with this program, you may contact:
                      7:  *   http://wiki.laptop.org/go/Micropolis  or email  [email protected].
                      8:  * 
                      9:  * This program is free software: you can redistribute it and/or modify
                     10:  * it under the terms of the GNU General Public License as published by
                     11:  * the Free Software Foundation, either version 3 of the License, or (at
                     12:  * your option) any later version.
                     13:  * 
                     14:  * This program is distributed in the hope that it will be useful, but
                     15:  * WITHOUT ANY WARRANTY; without even the implied warranty of
                     16:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     17:  * General Public License for more details.  You should have received a
                     18:  * copy of the GNU General Public License along with this program.  If
                     19:  * not, see <http://www.gnu.org/licenses/>.
                     20:  * 
                     21:  *             ADDITIONAL TERMS per GNU GPL Section 7
                     22:  * 
                     23:  * No trademark or publicity rights are granted.  This license does NOT
                     24:  * give you any right, title or interest in the trademark SimCity or any
                     25:  * other Electronic Arts trademark.  You may not distribute any
                     26:  * modification of this program using the trademark SimCity or claim any
                     27:  * affliation or association with Electronic Arts Inc. or its employees.
                     28:  * 
                     29:  * Any propagation or conveyance of this program must include this
                     30:  * copyright notice and these terms.
                     31:  * 
                     32:  * If you convey this program (or any modifications of it) and assume
                     33:  * contractual liability for the program to recipients of it, you agree
                     34:  * to indemnify Electronic Arts for any liability that those contractual
                     35:  * assumptions impose on Electronic Arts.
                     36:  * 
                     37:  * You may not misrepresent the origins of this program; modified
                     38:  * versions of the program must be marked as such and not identified as
                     39:  * the original program.
                     40:  * 
                     41:  * This disclaimer supplements the one included in the General Public
                     42:  * License.  TO THE FULLEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW, THIS
                     43:  * PROGRAM IS PROVIDED TO YOU "AS IS," WITH ALL FAULTS, WITHOUT WARRANTY
                     44:  * OF ANY KIND, AND YOUR USE IS AT YOUR SOLE RISK.  THE ENTIRE RISK OF
                     45:  * SATISFACTORY QUALITY AND PERFORMANCE RESIDES WITH YOU.  ELECTRONIC ARTS
                     46:  * DISCLAIMS ANY AND ALL EXPRESS, IMPLIED OR STATUTORY WARRANTIES,
                     47:  * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, SATISFACTORY QUALITY,
                     48:  * FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT OF THIRD PARTY
                     49:  * RIGHTS, AND WARRANTIES (IF ANY) ARISING FROM A COURSE OF DEALING,
                     50:  * USAGE, OR TRADE PRACTICE.  ELECTRONIC ARTS DOES NOT WARRANT AGAINST
                     51:  * INTERFERENCE WITH YOUR ENJOYMENT OF THE PROGRAM; THAT THE PROGRAM WILL
                     52:  * MEET YOUR REQUIREMENTS; THAT OPERATION OF THE PROGRAM WILL BE
                     53:  * UNINTERRUPTED OR ERROR-FREE, OR THAT THE PROGRAM WILL BE COMPATIBLE
                     54:  * WITH THIRD PARTY SOFTWARE OR THAT ANY ERRORS IN THE PROGRAM WILL BE
                     55:  * CORRECTED.  NO ORAL OR WRITTEN ADVICE PROVIDED BY ELECTRONIC ARTS OR
                     56:  * ANY AUTHORIZED REPRESENTATIVE SHALL CREATE A WARRANTY.  SOME
                     57:  * JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF OR LIMITATIONS ON IMPLIED
                     58:  * WARRANTIES OR THE LIMITATIONS ON THE APPLICABLE STATUTORY RIGHTS OF A
                     59:  * CONSUMER, SO SOME OR ALL OF THE ABOVE EXCLUSIONS AND LIMITATIONS MAY
                     60:  * NOT APPLY TO YOU.
                     61:  */
                     62: #include "sim.h"
                     63: 
                     64: 
                     65: int dynamicFilter(int c, int r);
                     66: int WireDrawBeegMapRect(SimView *view, short x, short y, short w, short h);
                     67: 
                     68: drawBeegMaps()
                     69: {
                     70:   sim_update_editors();
                     71: }
                     72: 
                     73: 
                     74: MemDrawBeegMapRect(SimView *view, int x, int y, int w, int h)
                     75: {
                     76:   int lineBytes = view->line_bytes;
                     77:   int pixelBytes = view->pixel_bytes;
                     78:   QUAD ii, mm;
                     79:   unsigned short *map;
                     80:   unsigned short tile;
                     81:   unsigned char blink = (flagBlink <= 0), *bt = view->bigtiles;
                     82:   short col, row;
                     83:   short **have, *ha;
                     84: 
                     85:   if (x < view->tile_x) {
                     86:     if ((w -= (view->tile_x - x)) <= 0)
                     87:       return;
                     88:     x = view->tile_x;
                     89:   }
                     90:   if (y < view->tile_y) {
                     91:     if ((h -= (view->tile_y - y)) <= 0)
                     92:       return;
                     93:     y = view->tile_y;
                     94:   }
                     95:   if ((x + w) > (view->tile_x + view->tile_width)) {
                     96:     if ((w -= ((x + w) - (view->tile_x + view->tile_width))) <= 0)
                     97:       return;
                     98:   }
                     99:   if ((y + h) > (view->tile_y + view->tile_height)) {
                    100:     if ((h -= ((y + h) - (view->tile_y + view->tile_height))) <= 0)
                    101:       return;
                    102:   }
                    103: 
                    104:   if (view->x->color) {
                    105:     register unsigned QUAD *image, *mem;
                    106: 
                    107:     image = (unsigned QUAD *)view->data;
                    108:     ii = ((lineBytes * h * 16) - 16) / sizeof(unsigned QUAD);
                    109:     map = (unsigned short *)&Map[x][y];
                    110:     mm = WORLD_Y - h;
                    111:     have = view->tiles;
                    112: 
                    113:     /*
                    114:      * Huge Berserk Rebel Warthog
                    115:      */
                    116: 
                    117:     for (col = 0; col < w; col++) {
                    118:       ha = &have[col][0];
                    119:       image = (unsigned QUAD *)(view->data + (col * 16 * pixelBytes));
                    120:       for (row = 0; row < h; row++, ha++) {
                    121:        tile = *(map++);
                    122:        if ((tile & LOMASK) >= TILE_COUNT) tile -= TILE_COUNT;
                    123: 
                    124:        /* Blink lightning bolt in unpowered zone center */
                    125:        if (blink && (tile & ZONEBIT) && !(tile & PWRBIT)) {
                    126:          tile = LIGHTNINGBOLT;
                    127:        } else {
                    128:          tile &= LOMASK;
                    129:        } // if
                    130: 
                    131:        if (
                    132:            (tile > 63) &&
                    133:            (view->dynamic_filter != 0) &&
                    134:            (dynamicFilter(col + x, row + y) == 0)
                    135:            ) {
                    136:          tile = 0;
                    137:        } // if
                    138: 
                    139:        /* XXX */
                    140:        if (tile == *ha) {
                    141:          image = (unsigned QUAD *)(((unsigned char *)image) +
                    142:                                    (lineBytes * 16));
                    143:        } else {
                    144:          *ha = tile;
                    145:          mem = (unsigned QUAD *)&(bt[tile * 256 * pixelBytes]);
                    146: 
                    147:          /* XXX: handle depth for big tiles */
                    148: #if 1
                    149:          /* Very un-rolled loop. */
                    150: 
                    151: #define ROW1_8(n) \
                    152:          image[0] = mem[0+n]; \
                    153:          image[1] = mem[1+n]; \
                    154:          image[2] = mem[2+n]; \
                    155:          image[3] = mem[3+n]; \
                    156:          image = (unsigned QUAD *)(((unsigned char *)image) + lineBytes);
                    157: 
                    158: #define ROW2_8(n) ROW1_8(n) ROW1_8(n+4)
                    159: #define ROW4_8(n) ROW2_8(n) ROW2_8(n+8)
                    160: #define ROW8_8(n) ROW4_8(n) ROW4_8(n+16)
                    161: #define ROW16_8() ROW8_8(0) ROW8_8(32)
                    162: 
                    163: #define ROW1_16(n) \
                    164:       memcpy((char *)image, (char *)mem + (2 * 16 * (n)), 2 * 16); \
                    165:       image = (unsigned QUAD *)(((unsigned char *)image) + lineBytes);
                    166: 
                    167: #define ROW2_16(n) ROW1_16(n) ROW1_16(n+1)
                    168: #define ROW4_16(n) ROW2_16(n) ROW2_16(n+2)
                    169: #define ROW8_16(n) ROW4_16(n) ROW4_16(n+4)
                    170: #define ROW16_16() ROW8_16(0) ROW8_16(8)
                    171: 
                    172:          switch (view->x->depth) {
                    173: 
                    174:          case 8:
                    175:            ROW16_8();
                    176:            break;
                    177: 
                    178:          case 15:
                    179:          case 16:
                    180:            ROW16_16();
                    181:            break;
                    182: 
                    183:          case 24:
                    184:          case 32:
                    185:          default:
                    186:            /* XXX: handle different depths */
                    187:            break;
                    188: 
                    189:          } // switch
                    190: 
                    191: #else
                    192:          /* Not so un-rolled loop. */
                    193: 
                    194:          { int i;
                    195:            for (i = 16; i > 0; i--) {
                    196:              image[0] = mem[0]; image[1] = mem[1];
                    197:              image[2] = mem[2]; image[3] = mem[3];
                    198:              image = (unsigned QUAD *)(((unsigned char *)image) + lineBytes);
                    199:              mem += 4;
                    200:            }
                    201:          } // scope
                    202: #endif
                    203: 
                    204:        } // if
                    205: 
                    206:       } // for row
                    207:       image -= ii;
                    208:       map += mm;
                    209:     } // for col
                    210:   } else {
                    211:     register unsigned short *image, *mem;
                    212: 
                    213:     image = (unsigned short *)view->data;
                    214:     ii = ((lineBytes * h * 16) - 2) / sizeof(unsigned short);
                    215:     map = (unsigned short *)&Map[x][y];
                    216:     mm = WORLD_Y - h;
                    217:     have = view->tiles;
                    218: 
                    219:     for (col = 0; col < w; col++) {
                    220:       ha = &have[col][0];
                    221:       image = (unsigned short *)(view->data + (col * 2));
                    222:       for (row = 0; row < h; row++, ha++) {
                    223:        tile = *(map++);
                    224:        if ((tile & LOMASK) >= TILE_COUNT) tile -= TILE_COUNT;
                    225: 
                    226:        /* Blink lightning bolt in unpowered zone center */
                    227:        if (blink && (tile & ZONEBIT) && !(tile & PWRBIT))
                    228:          tile = LIGHTNINGBOLT;
                    229:        else
                    230:          tile &= LOMASK;
                    231: 
                    232:        if (tile == *ha) {
                    233:          image = (unsigned short *)
                    234:            (((unsigned char *)image) + (lineBytes * 16));
                    235:        } else {
                    236:          *ha = tile;
                    237:          mem = (unsigned short *)&(bt[tile * 32]);
                    238: 
                    239:          { char i;
                    240:            for (i = 16; i > 0; i--) {
                    241:              *image = *mem;
                    242:              image = (unsigned short *)(((unsigned char *)image) + lineBytes);
                    243:              mem++;
                    244:            }
                    245:          }
                    246:        }
                    247:       }
                    248:       image -= ii;
                    249:       map += mm;
                    250:     }
                    251:   }
                    252: }
                    253: 
                    254: 
                    255: WireDrawBeegMapRect(SimView *view, short x, short y, short w, short h)
                    256: {
                    257:   unsigned short *map;
                    258:   unsigned short tile;
                    259:   unsigned char blink = (flagBlink <= 0);
                    260:   short col, row;
                    261:   QUAD mm;
                    262:   short **have, *ha;
                    263: 
                    264:   if (x < view->tile_x) {
                    265:     if ((w -= (view->tile_x - x)) <= 0)
                    266:       return;
                    267:     x = view->tile_x;
                    268:   }
                    269:   if (y < view->tile_y) {
                    270:     if ((h -= (view->tile_y - y)) <= 0)
                    271:       return;
                    272:     y = view->tile_y;
                    273:   }
                    274:   if ((x + w) > (view->tile_x + view->tile_width)) {
                    275:     if ((w -= ((x + w) - (view->tile_x + view->tile_width))) <= 0)
                    276:       return;
                    277:   }
                    278:   if ((y + h) > (view->tile_y + view->tile_height)) {
                    279:     if ((h -= ((y + h) - (view->tile_y + view->tile_height))) <= 0)
                    280:       return;
                    281:   }
                    282: 
                    283:   map = (unsigned short *)&Map[x][y];
                    284:   mm = WORLD_Y - h;
                    285:   have = view->tiles;
                    286: 
                    287:   for (col = 0; col < w; col++) {
                    288:     ha = &have[col][0];
                    289:     for (row = 0; row < h; row++, ha++) {
                    290:       tile = *(map++);
                    291:       if ((tile & LOMASK) >= TILE_COUNT) tile -= TILE_COUNT;
                    292: 
                    293:       /* Blink lightning bolt in unpowered zone center */
                    294:       if (blink && (tile & ZONEBIT) && !(tile & PWRBIT))
                    295:        tile = LIGHTNINGBOLT;
                    296:       else
                    297:        tile &= LOMASK;
                    298: 
                    299:       if (tile != *ha) {
                    300:        *ha = tile;
                    301:        XCopyArea(view->x->dpy, view->x->big_tile_pixmap, view->pixmap,
                    302:                  view->x->gc, 0, tile * 16, 16, 16,
                    303:                  col * 16, row * 16);
                    304:       }
                    305:     }
                    306:     map += mm;
                    307:   }
                    308: }

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