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feat(vm): tile_set_mirror, tile_set_flip, tile_set_rotate #355

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Merged
Fancy2209 merged 1 commit into from
Jul 25, 2026
+41 −2
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feat(vm): tile_set_mirror, tile_set_flip, tile_set_rotate #355

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43 changes: 41 additions & 2 deletions src/vm_builtins.c
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Original file line number Diff line number Diff line change
Expand Up @@ -14211,14 +14211,14 @@ static RValue builtin_tile_get_index(MAYBE_UNUSED VMContext* ctx, RValue* args,
// (see GameMaker-HTML5 Function_Layers.js)
static RValue builtin_tile_get_mirror(MAYBE_UNUSED VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
if (1 > argCount) return RValue_makeBool(false);
return RValue_makeBool((RValue_toInt32(args[0]) & (1 << 28)) != 0);
return RValue_makeBool((RValue_toInt32(args[0]) & TILEMIRROR_MASK) != 0);
}

// tile_get_flip(tiledata): returns whether the vertical-flip bit is set on a raw tile cell value.
// (see GameMaker-HTML5 Function_Layers.js)
static RValue builtin_tile_get_flip(MAYBE_UNUSED VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
if (1 > argCount) return RValue_makeBool(false);
return RValue_makeBool((RValue_toInt32(args[0]) & (1 << 29)) != 0);
return RValue_makeBool((RValue_toInt32(args[0]) & TILEFLIP_MASK) != 0);
}

// tile_get_rotate(tiledata): returns whether the 90-degree-rotate bit is set on a raw tile cell value.
Expand All @@ -14235,6 +14235,42 @@ static RValue builtin_tile_set_empty(MAYBE_UNUSED VMContext* ctx, RValue* args,
return RValue_makeReal((GMLReal) (RValue_toInt32(args[0]) & ~TILEINDEX_SHIFTEDMASK));
}

// tile_set_mirror(tiledata): sets the horizontal-mirror bit on a raw tile cell value.
// (see GameMaker-HTML5 Function_Layers.js)
static RValue builtin_tile_set_mirror(MAYBE_UNUSED VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
if (2 > argCount) return RValue_makeReal(-1.0);
int32_t cell = RValue_toInt32(args[0]);
if (RValue_toBool(args[1]))
cell |= TILEMIRROR_MASK;
else
cell &= ~TILEMIRROR_MASK;
return RValue_makeReal((GMLReal) cell);
}

// tile_set_flip(tiledata): sets the vertical-flip bit on a raw tile cell value.
// (see GameMaker-HTML5 Function_Layers.js)
static RValue builtin_tile_set_flip(MAYBE_UNUSED VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
if (2 > argCount) return RValue_makeReal(-1.0);
int32_t cell = RValue_toInt32(args[0]);
if (RValue_toBool(args[1]))
cell |= TILEFLIP_MASK;
else
cell &= ~TILEFLIP_MASK;
return RValue_makeReal((GMLReal) cell);
}

// tile_set_rotate(tiledata): sets the 90-degree-rotate bit on a raw tile cell value.
// (see GameMaker-HTML5 Function_Layers.js)
static RValue builtin_tile_set_rotate(MAYBE_UNUSED VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
if (2 > argCount) return RValue_makeReal(-1.0);
int32_t cell = RValue_toInt32(args[0]);
if (RValue_toBool(args[1]))
cell |= TILEROTATE_MASK;
else
cell &= ~TILEROTATE_MASK;
return RValue_makeReal((GMLReal) cell);
}

static RValue builtin_layer_get_all(VMContext* ctx, MAYBE_UNUSED RValue* args, MAYBE_UNUSED int32_t argCount) {
Runner* runner = ctx->runner;
size_t count = arrlenu(runner->runtimeLayers);
Expand Down Expand Up @@ -17214,6 +17250,9 @@ void VMBuiltins_registerAll(VMContext* ctx) {
VM_registerBuiltin(ctx, "tile_get_flip", builtin_tile_get_flip);
VM_registerBuiltin(ctx, "tile_get_rotate", builtin_tile_get_rotate);
VM_registerBuiltin(ctx, "tile_set_empty", builtin_tile_set_empty);
VM_registerBuiltin(ctx, "tile_set_mirror", builtin_tile_set_mirror);
VM_registerBuiltin(ctx, "tile_set_flip", builtin_tile_set_flip);
VM_registerBuiltin(ctx, "tile_set_rotate", builtin_tile_set_rotate);
VM_registerBuiltin(ctx, "tilemap_set", builtin_tilemap_set);
VM_registerBuiltin(ctx, "tilemap_set_at_pixel", builtin_tilemap_set_at_pixel);
#endif
Expand Down
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