Leaderboard

You should always use the latest version. There's no reason not to.

Also please do not attach your files to your post. Either: Add them in a code block as part of your post Use Pastebin Or even better than both of those: upload your entire mod as a working GitHub repository. It would, however, appear that you have not included the "normal" variant in your blockstate JSON file. https://github.com/Draco18s/ReasonableRealism/blob/1.12.1/src/main/resources/assets/harderores/blockstates/dummy_ore_zinc.json#L11-L18

There has to be an error in the logs about a missing variant or model. Post the logs (logs/fml-client-latest.log) and any code related to your block.

partialTicks is used to smooth animation by interpolating between ticks. For example (code from PneumaticCraft: Repressurized to smoothly animate rotations of the Assembly Drill - see https://github.com/TeamPneumatic/pnc-repressurized/blob/master/src/main/java/me/desht/pneumaticcraft/client/render/tileentity/RenderAssemblyDrill.java): void renderModel(TileEntityAssemblyDrill te, float partialTicks) { if (te != null) { float[] renderAngles = new float[5]; for (int i = 0; i < 4; i++) { renderAngles[i] = te.oldAngles[i] + (te.angles[i] - te.oldAngles[i]) * partialTicks; } renderAngles[4] = te.oldDrillRotation + (te.drillRotation - te.oldDrillRotation) * partialTicks; model.renderModel(0.0625f, renderAngles); } else { model.renderModel(0.0625f, new float[]{0, 0, 35, 55, 0}); } } The rotation angles and previous rotation angles are stored in the TE - every tick, the angles are updated as appropriate and the previous angles are copied into te.oldAngles[] (multiple angles in this case, since it's a robot arm which has several points of rotation). The actual render angles are calculated as an interpolation of the current and previous angles, based on partialTicks: renderAngle = oldAngle + (newAngle - oldAngle) * partialTicks. Of course, this can also apply to any other rendering: translations, scaling etc. But that's the principle.

Edited the topic, the site you linked IS known as one of the sites that shove viruses on mod downloads. So you may of gotten it from there. But yes, as diesiben said, you should only download mods from their original sources. Typically here, or Curse Forge. Sometimes the authors direct website. There are many many sites out there that pray on the fact that Mod authors are typically doing this in their free time, and don't make enough off the mods to hire lawyers to shut down these bad sites. So ya... only get your mods from valid sites. As for the winrar issue, or any issue with extracted mods. Mods have not needed to be, nore supported being extracted since like 1.6.4. So no you should NEVER have to use any program to install a mod, or extract it. Just download the zip or jar {zip is deprected but some modders are slow and still use it, but most mods should be .jar} and put it in your mods folder.

Minecraft uses Gson to parse JSON files.