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(svn r4581) - NewGRF: replace replicated action 2 code with two functions to simplify code somewhat. Also check that a sprite id is

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valid.
This commit is contained in:
peter1138 2006-04-26 19:42:05 +00:00
parent 380c097fc6
commit b637a16db0
1 changed files with 38 additions and 41 deletions
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79
newgrf.c
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@ -1300,6 +1300,39 @@ static void NewSpriteSet(byte *buf, int len)
}
}
/* Helper function to either create a callback or link to a previously
* defined spritegroup. */
static SpriteGroup* GetGroupFromGroupID(byte setid, byte type, uint16 groupid)
{
if (HASBIT(groupid, 15)) return NewCallBackResultSpriteGroup(groupid);
if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "NewSpriteGroup(0x%02X:0x%02X): Groupid 0x%04X does not exist, leaving empty.", setid, type, groupid);
return NULL;
}
return _cur_grffile->spritegroups[groupid];
}
/* Helper function to either create a callback or a result sprite group. */
static SpriteGroup* CreateGroupFromGroupID(byte setid, byte type, uint16 spriteid, uint16 num_sprites)
{
if (HASBIT(spriteid, 15)) return NewCallBackResultSpriteGroup(spriteid);
/* Check if the sprite is within range. This can fail if the Action 0x01
* is skipped, as TTDPatch mandates that Action 0x02s must be processed.
* We don't have that rule, but must live by the Patch... */
if (_cur_grffile->spriteset_start + spriteid * num_sprites + num_sprites > _cur_spriteid) {
grfmsg(GMS_WARN, "NewSpriteGroup(0x%02X:0x%02X): Real Sprite IDs 0x%04X - 0x%04X do not (all) exist (max 0x%04X), leaving empty.",
setid, type,
_cur_grffile->spriteset_start + spriteid * num_sprites,
_cur_grffile->spriteset_start + spriteid * num_sprites + num_sprites - 1, _cur_spriteid - 1);
return NULL;
}
return NewResultSpriteGroup(_cur_grffile->spriteset_start + spriteid * num_sprites, num_sprites);
}
/* Action 0x02 */
static void NewSpriteGroup(byte *buf, int len)
{
@ -1348,7 +1381,6 @@ static void NewSpriteGroup(byte *buf, int len)
case 0x82: // Parent scope, byte
{
DeterministicSpriteGroup *dg;
uint16 groupid;
int i;
check_length(bufend - buf, 6, "NewSpriteGroup 0x81/0x82");
@ -1377,30 +1409,12 @@ static void NewSpriteGroup(byte *buf, int len)
dg->num_ranges = grf_load_byte(&buf);
dg->ranges = calloc(dg->num_ranges, sizeof(*dg->ranges));
for (i = 0; i < dg->num_ranges; i++) {
groupid = grf_load_word(&buf);
if (HASBIT(groupid, 15)) {
dg->ranges[i].group = NewCallBackResultSpriteGroup(groupid);
} else if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "NewSpriteGroup(0x%02X:0x%02X): Groupid 0x%04X does not exist, leaving empty.", setid, type, groupid);
dg->ranges[i].group = NULL;
} else {
dg->ranges[i].group = _cur_grffile->spritegroups[groupid];
}
dg->ranges[i].group = GetGroupFromGroupID(setid, type, grf_load_word(&buf));
dg->ranges[i].low = grf_load_byte(&buf);
dg->ranges[i].high = grf_load_byte(&buf);
}
groupid = grf_load_word(&buf);
if (HASBIT(groupid, 15)) {
dg->default_group = NewCallBackResultSpriteGroup(groupid);
} else if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "NewSpriteGroup(0x%02X:0x%02X): Groupid 0x%04X does not exist, leaving empty.", setid, type, groupid);
dg->default_group = NULL;
} else {
dg->default_group = _cur_grffile->spritegroups[groupid];
}
dg->default_group = GetGroupFromGroupID(setid, type, grf_load_word(&buf));
break;
}
@ -1431,16 +1445,7 @@ static void NewSpriteGroup(byte *buf, int len)
rg->groups = calloc(rg->num_groups, sizeof(*rg->groups));
for (i = 0; i < rg->num_groups; i++) {
uint16 groupid = grf_load_word(&buf);
if (HASBIT(groupid, 15)) {
rg->groups[i] = NewCallBackResultSpriteGroup(groupid);
} else if (groupid >= _cur_grffile->spritegroups_count || _cur_grffile->spritegroups[groupid] == NULL) {
grfmsg(GMS_WARN, "NewSpriteGroup(0x%02X:0x%02X): Groupid 0x%04X does not exist, leaving empty.", setid, type, groupid);
rg->groups[i] = NULL;
} else {
rg->groups[i] = _cur_grffile->spritegroups[groupid];
}
rg->groups[i] = GetGroupFromGroupID(setid, type, grf_load_word(&buf));
}
break;
@ -1479,21 +1484,13 @@ static void NewSpriteGroup(byte *buf, int len)
for (i = 0; i < num_loaded; i++) {
uint16 spriteset_id = grf_load_word(&buf);
if (HASBIT(spriteset_id, 15)) {
rg->loaded[i] = NewCallBackResultSpriteGroup(spriteset_id);
} else {
rg->loaded[i] = NewResultSpriteGroup(_cur_grffile->spriteset_start + spriteset_id * _cur_grffile->spriteset_numents, rg->sprites_per_set);
}
rg->loaded[i] = CreateGroupFromGroupID(setid, type, spriteset_id, rg->sprites_per_set);
DEBUG(grf, 8) ("NewSpriteGroup: + rg->loaded[%i] = %u (subset %u)", i, rg->loaded[i]->g.result.result, spriteset_id);
}
for (i = 0; i < num_loading; i++) {
uint16 spriteset_id = grf_load_word(&buf);
if (HASBIT(spriteset_id, 15)) {
rg->loading[i] = NewCallBackResultSpriteGroup(spriteset_id);
} else {
rg->loading[i] = NewResultSpriteGroup(_cur_grffile->spriteset_start + spriteset_id * _cur_grffile->spriteset_numents, rg->sprites_per_set);
}
rg->loading[i] = CreateGroupFromGroupID(setid, type, spriteset_id, rg->sprites_per_set);
DEBUG(grf, 8) ("NewSpriteGroup: + rg->loading[%i] = %u (subset %u)", i, rg->loading[i]->g.result.result, spriteset_id);
}