99 lines
2.7 KiB
Markdown
99 lines
2.7 KiB
Markdown
# Resource expansion
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Sometimes, you may wish to use respackopts values inside your text files (for example as model transforms),
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without switching between a bunch of similar files. For this purpose, respackopts allows replacing text in files via resource expansion.
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You can use the `expansions` block in your .rpo to replace content with a value computed through executing a custom [μScript](https://gitlab.com/JFronny/java-commons/-/tree/master/muscript) block.
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Values can be accessed in the script in the same exact way as in condition objects,
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as the same language and object representation is used, though the result of a script is a string and not a boolean here.
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I should probably point out here that, since the result here is always a string,
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string concatenation via the `||` operator is possible and recommended.
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For example, the following is a valid script: `'Text ' || (someNumber * 15) || someBoolean`
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### Example:
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respackopts.json5:
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```json
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{
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id: "examplePack",
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version: 9,
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capabilities: ["FileFilter", "DirFilter"],
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conf: {
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oakFence: {
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uvLock: true,
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invertOrientation: false,
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yFactor: 0
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}
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}
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}
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```
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oak_fence.json.rpo:
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```json
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{
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expansions: {
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uvlock: "examplePack.oakFence.uvLock",
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orientation: "!examplePack.oakFence.invertOrientation",
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y000: "examplePack.oakFence.yFactor + 0",
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y090: "examplePack.oakFence.yFactor + 90",
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y180: "examplePack.oakFence.yFactor + 180",
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y270: "examplePack.oakFence.yFactor + 270"
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}
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}
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```
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oak_fence.json:
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```json
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{
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"multipart": [
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{
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"apply": {
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"model": "minecraft:block/oak_fence_post"
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}
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},
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{
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"when": {
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"north": "${orientation}"
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},
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"apply": {
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"model": "minecraft:block/oak_fence_side",
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"y": ${y000},
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"uvlock": ${uvlock}
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}
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},
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{
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"when": {
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"east": "${orientation}"
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},
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"apply": {
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"model": "minecraft:block/oak_fence_side",
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"y": ${y090},
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"uvlock": ${uvlock}
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}
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},
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{
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"when": {
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"south": "${orientation}"
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},
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"apply": {
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"model": "minecraft:block/oak_fence_side",
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"y": ${y180},
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"uvlock": ${uvlock}
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}
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},
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{
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"when": {
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"west": "${orientation}"
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},
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"apply": {
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"model": "minecraft:block/oak_fence_side",
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"y": ${y270},
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"uvlock": ${uvlock}
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}
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}
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]
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}
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```
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## Explanation
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The expansions block contains a key ("uvlock") and a script, which is executed when the file is loaded.
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All instances of the key (formatted as ${name} -> ${lights} in this example) will be replaced by the result of the script.
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Make sure to only use this feature on text files as unexpected results my occur otherwise
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