Add realtime counter that uses MC world game-time ticks.

src/generated/resources/.cache/cache

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+c4123949a3263af465a2e2c59089c2b5e60bffac assets/oc2/blockstates/bus_cable.json
+16959897ee915fd4dffcc2c0f71f9456257bf734 assets/oc2/blockstates/computer.json
+2b0784120d27ff9c1d43dc11435ca1d1372f4187 assets/oc2/blockstates/redstone_interface.json
+b46109b5f2f88f81e12822d7b36ad358eb0b612d assets/oc2/blockstates/screen.json
+9ed931619e39f59a8520c1e3b03fea2e9a56fb60 assets/oc2/models/block/computer.json
+9ed931619e39f59a8520c1e3b03fea2e9a56fb60 assets/oc2/models/block/redstone_interface.json
+9ed931619e39f59a8520c1e3b03fea2e9a56fb60 assets/oc2/models/block/screen.json
+53935dcfeefb89e634fdd58aebcfd827ddc21136 assets/oc2/models/item/bus_cable.json
+2c39515bad0488e8c058ed9cdcfca514a6d1add9 assets/oc2/models/item/computer.json
+08c2c6c0eac587d5a5d202d4b315d573d63a75ff assets/oc2/models/item/redstone_interface.json
+2b7f354376808f7d1c0e89d509ad1ddb7c5822ee assets/oc2/models/item/screen.json

src/generated/resources/assets/oc2/blockstates/computer.json

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+{
+  "variants": {
+    "facing=north": {
+      "model": "oc2:block/computer"
+    },
+    "facing=south": {
+      "model": "oc2:block/computer",
+      "y": 180
+    },
+    "facing=west": {
+      "model": "oc2:block/computer",
+      "y": 270
+    },
+    "facing=east": {
+      "model": "oc2:block/computer",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/oc2/blockstates/redstone_interface.json

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+{
+  "variants": {
+    "facing=north": {
+      "model": "oc2:block/redstone_interface"
+    },
+    "facing=south": {
+      "model": "oc2:block/redstone_interface",
+      "y": 180
+    },
+    "facing=west": {
+      "model": "oc2:block/redstone_interface",
+      "y": 270
+    },
+    "facing=east": {
+      "model": "oc2:block/redstone_interface",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/oc2/blockstates/screen.json

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+{
+  "variants": {
+    "facing=north": {
+      "model": "oc2:block/screen"
+    },
+    "facing=south": {
+      "model": "oc2:block/screen",
+      "y": 180
+    },
+    "facing=west": {
+      "model": "oc2:block/screen",
+      "y": 270
+    },
+    "facing=east": {
+      "model": "oc2:block/screen",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/oc2/models/block/computer.json

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+{}

src/generated/resources/assets/oc2/models/block/redstone_interface.json

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+{}

src/generated/resources/assets/oc2/models/block/screen.json

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+{}

src/generated/resources/assets/oc2/models/item/bus_cable.json

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+{
+  "parent": "oc2:block/cable_base"
+}

src/generated/resources/assets/oc2/models/item/computer.json

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+{
+  "parent": "oc2:block/computer"
+}

src/generated/resources/assets/oc2/models/item/redstone_interface.json

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+{
+  "parent": "oc2:block/redstone_interface"
+}

src/generated/resources/assets/oc2/models/item/screen.json

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+{
+  "parent": "oc2:block/screen"
+}

src/main/java/li/cil/oc2/common/vm/device/MinecraftRealTimeCounter.java

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+package li.cil.oc2.common.vm.device;
+
+import li.cil.sedna.api.device.rtc.RealTimeCounter;
+import net.minecraft.world.World;
+
+public final class MinecraftRealTimeCounter implements RealTimeCounter {
+    private static final int TICKS_PER_DAY = 24000;
+    private static final int FREQUENCY = TICKS_PER_DAY;
+
+    private World world;
+
+    public void setWorld(final World world) {
+        this.world = world;
+    }
+
+    @Override
+    public long getTime() {
+        final long ticks = world != null ? world.getGameTime() : 0;
+        final long days = ticks; // / TICKS_PER_DAY
+        final long hours = days * 24;
+        final long minutes = hours * 60;
+        final long seconds = minutes * 60;
+        return seconds; // * FREQUENCY
+    }
+
+    @Override
+    public int getFrequency() {
+        return FREQUENCY;
+    }
+}

src/main/java/li/cil/oc2/common/vm/device/package-info.java

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+@ParametersAreNonnullByDefault
+@MethodsReturnNonnullByDefault
+package li.cil.oc2.common.vm.device;
+
+import mcp.MethodsReturnNonnullByDefault;
+
+import javax.annotation.ParametersAreNonnullByDefault;