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GRF analysis: Handle industry tile 0x43 individual x/y checks

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In ACOM_INDUSTRY_TILE mode
This commit is contained in:
Jonathan G Rennison
2023-12-07 01:00:54 +00:00
parent 0aa27cfda3
commit 91d872c88e
1 changed files with 9 additions and 5 deletions
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14
src/newgrf_analysis.cpp
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@@ -207,19 +207,23 @@ void DeterministicSpriteGroup::AnalyseCallbacks(AnalyseCallbackOperation &op) co
return;
}
}
if (op.mode == ACOM_INDUSTRY_TILE && adjust.variable == 0x43 && this->var_scope == VSG_SCOPE_SELF) {
if (adjust.shift_num == 0 && adjust.and_mask == 0xFFFF && adjust.type == DSGA_TYPE_NONE) {
if (op.mode == ACOM_INDUSTRY_TILE && adjust.variable == 0x43 && adjust.type == DSGA_TYPE_NONE && this->var_scope == VSG_SCOPE_SELF) {
const uint32 effective_mask = adjust.and_mask << adjust.shift_num;
if (effective_mask == 0xFFFF || effective_mask == 0xFF00 || effective_mask == 0x00FF) {
/* Relative position switch */
const bool use_x = effective_mask & 0xFF;
const bool use_y = effective_mask & 0xFF00;
uint64 default_mask = op.data.indtile->check_mask;
for (const auto &range : this->ranges) {
if (range.high - range.low < 32) {
uint64 new_check_mask = 0;
for (uint i = range.low; i <= range.high; i++) {
int16 x = i & 0xFF;
int16 y = (i >> 8) & 0xFF;
const uint offset = i << adjust.shift_num;
const int16 x = offset & 0xFF;
const int16 y = (offset >> 8) & 0xFF;
for (uint bit : SetBitIterator<uint, uint64>(op.data.indtile->check_mask)) {
const TileIndexDiffC &ti = (*(op.data.indtile->layout))[bit].ti;
if (ti.x == x && ti.y == y) {
if ((!use_x || ti.x == x) && (!use_y || ti.y == y)) {
SetBit(new_check_mask, bit);
}
}