Pocket computer light color cycle

Slowly cycles between the orange NFC modem color, and the color set by the back peripheral if both are active.

projects/common-api/src/main/java/dan200/computercraft/api/pocket/IPocketAccess.java

@@ -47,22 +47,40 @@ public interface IPocketAccess {
     void setColour(int colour);
 
     /**
-     * Get the colour of this pocket computer's light as a RGB number.
+     * Get the primary colour of this pocket computer's light as a RGB number.
      *
-     * @return The colour this light is. This will be a RGB colour between {@code 0x000000} and {@code 0xFFFFFF} or
+     * @return The primary colour this light is. This will be a RGB colour between {@code 0x000000} and {@code 0xFFFFFF} or
      * -1 if it has no colour.
-     * @see #setLight(int)
+     * @see #setLightPrimary(int)
      */
-    int getLight();
+    int getLightPrimary();
 
     /**
-     * Set the colour of the pocket computer's light to a RGB number.
+     * Set the primary colour of the pocket computer's light to a RGB number.
      *
-     * @param colour The colour this modem's light will be changed to. This should be a RGB colour between
+     * @param colour The primary colour this modem's light will be changed to. This should be a RGB colour between
      *               {@code 0x000000} and {@code 0xFFFFFF} or -1 to reset to the default colour.
-     * @see #getLight()
+     * @see #getLightPrimary()
      */
-    void setLight(int colour);
+    void setLightPrimary(int colour);
+
+    /**
+     * Get the secondary colour of this pocket computer's light as a RGB number.
+     *
+     * @return The secondary colour this light is. This will be a RGB colour between {@code 0x000000} and {@code 0xFFFFFF} or
+     * -1 if it has no colour.
+     * @see #setLightSecondary(int)
+     */
+    int getLightSecondary();
+
+    /**
+     * Set the secondary colour of the pocket computer's light to a RGB number.
+     *
+     * @param colour The secondary colour this modem's light will be changed to. This should be a RGB colour between
+     *               {@code 0x000000} and {@code 0xFFFFFF} or -1 to reset to the default colour.
+     * @see #getLightSecondary()
+     */
+    void setLightSecondary(int colour);
 
     /**
      * Get the upgrade-specific NBT.

projects/common/src/client/java/dan200/computercraft/client/FrameInfo.java

@@ -24,6 +24,10 @@ public static long getRenderFrame() {
         return renderFrame;
     }
 
+    public static int getTick() {
+        return tick;
+    }
+
     public static void onTick() {
         tick++;
     }

projects/common/src/client/java/dan200/computercraft/client/platform/ClientNetworkContextImpl.java

@@ -67,9 +67,9 @@ public void handlePlayRecord(BlockPos pos, @Nullable SoundEvent sound, @Nullable
     }
 
     @Override
-    public void handlePocketComputerData(int instanceId, ComputerState state, int lightState, TerminalState terminal) {
+    public void handlePocketComputerData(int instanceId, ComputerState state, int primaryLightState, int secondaryLightState, TerminalState terminal) {
         var computer = ClientPocketComputers.get(instanceId, terminal.colour);
-        computer.setState(state, lightState);
+        computer.setState(state, primaryLightState, secondaryLightState);
         if (terminal.hasTerminal()) computer.setTerminal(terminal);
     }
 

projects/common/src/client/java/dan200/computercraft/client/pocket/PocketComputerData.java

@@ -4,6 +4,7 @@
 
 package dan200.computercraft.client.pocket;
 
+import dan200.computercraft.client.FrameInfo;
 import dan200.computercraft.core.terminal.Terminal;
 import dan200.computercraft.shared.computer.core.ComputerState;
 import dan200.computercraft.shared.computer.terminal.NetworkedTerminal;
@@ -24,14 +25,42 @@
 public class PocketComputerData {
     private final NetworkedTerminal terminal;
     private ComputerState state = ComputerState.OFF;
-    private int lightColour = -1;
+    private int primaryLightColour = -1;
+    private int secondaryLightColour = -1;
 
     public PocketComputerData(boolean colour) {
         terminal = new NetworkedTerminal(Config.pocketTermWidth, Config.pocketTermHeight, colour);
     }
 
     public int getLightState() {
-        return state != ComputerState.OFF ? lightColour : -1;
+        if (state != ComputerState.OFF) {
+            if (secondaryLightColour == -1) {
+                return primaryLightColour;
+            } else if (primaryLightColour == -1) {
+                return secondaryLightColour;
+            } else {
+                double weight = ((Math.sin(((double)(FrameInfo.getTick() % 41) / 40)*Math.PI*2)+1)/2);
+                return blend(primaryLightColour, secondaryLightColour, weight);
+            }
+        }
+        return -1;
+    }
+
+    private static int blend(int a, int b, double weight) {
+        int[][] rgb = {
+            { a >> 16,  b >> 16 },
+            { (a & 0x00ff00) >> 8, (b & 0x00ff00) >> 8 },
+            { a & 0x0000ff, b & 0x0000ff }
+        };
+        int[] channels = new int[3];
+        for (int i = 0; i < 3; i++) {
+            channels[i] = (int)Math.sqrt((Math.pow(rgb[i][0], 2)*weight + Math.pow(rgb[i][1], 2)*(1-weight))/2);
+        }
+        int color = 0;
+        for (int channel : channels) {
+            color = (color << 8) + channel;
+        }
+        return color;
     }
 
     public Terminal getTerminal() {
@@ -42,9 +71,10 @@ public ComputerState getState() {
         return state;
     }
 
-    public void setState(ComputerState state, int lightColour) {
+    public void setState(ComputerState state, int primaryLightColour, int secondaryLightColor) {
         this.state = state;
-        this.lightColour = lightColour;
+        this.primaryLightColour = primaryLightColour;
+        this.secondaryLightColour = secondaryLightColor;
     }
 
     public void setTerminal(TerminalState state) {

projects/common/src/main/java/dan200/computercraft/shared/network/client/ClientNetworkContext.java

@@ -30,7 +30,7 @@ public interface ClientNetworkContext {
 
     void handlePlayRecord(BlockPos pos, @Nullable SoundEvent sound, @Nullable String name);
 
-    void handlePocketComputerData(int instanceId, ComputerState state, int lightState, TerminalState terminal);
+    void handlePocketComputerData(int instanceId, ComputerState state, int primaryLightColor, int secondaryLightColor, TerminalState terminal);
 
     void handlePocketComputerDeleted(int instanceId);
 

projects/common/src/main/java/dan200/computercraft/shared/network/client/PocketComputerDataMessage.java

@@ -19,34 +19,38 @@
 public class PocketComputerDataMessage implements NetworkMessage<ClientNetworkContext> {
     private final int instanceId;
     private final ComputerState state;
-    private final int lightState;
+    private final int primaryLightState;
+    private final int secondaryLightState;
     private final TerminalState terminal;
 
     public PocketComputerDataMessage(PocketServerComputer computer, boolean sendTerminal) {
         instanceId = computer.getInstanceID();
         state = computer.getState();
-        lightState = computer.getLight();
+        primaryLightState = computer.getLightPrimary();
+        secondaryLightState = computer.getLightSecondary();
         terminal = sendTerminal ? computer.getTerminalState() : new TerminalState((NetworkedTerminal) null);
     }
 
     public PocketComputerDataMessage(FriendlyByteBuf buf) {
         instanceId = buf.readVarInt();
         state = buf.readEnum(ComputerState.class);
-        lightState = buf.readVarInt();
+        primaryLightState = buf.readVarInt();
+        secondaryLightState = buf.readVarInt();
         terminal = new TerminalState(buf);
     }
 
     @Override
     public void write(FriendlyByteBuf buf) {
         buf.writeVarInt(instanceId);
         buf.writeEnum(state);
-        buf.writeVarInt(lightState);
+        buf.writeVarInt(primaryLightState);
+        buf.writeVarInt(secondaryLightState);
         terminal.write(buf);
     }
 
     @Override
     public void handle(ClientNetworkContext context) {
-        context.handlePocketComputerData(instanceId, state, lightState, terminal);
+        context.handlePocketComputerData(instanceId, state, primaryLightState, secondaryLightState, terminal);
     }
 
     @Override

projects/common/src/main/java/dan200/computercraft/shared/pocket/core/PocketServerComputer.java

@@ -38,8 +38,10 @@ public class PocketServerComputer extends ServerComputer implements IPocketAcces
     private @Nullable Entity entity;
     private ItemStack stack = ItemStack.EMPTY;
 
-    private int lightColour = -1;
-    private boolean lightChanged = false;
+    private int primaryLightColour = -1;
+    private boolean primaryLightChanged = false;
+    private int secondaryLightColour = -1;
+    private boolean secondaryLightChanged = false;
 
     private final Set<ServerPlayer> tracking = new HashSet<>();
 
@@ -77,17 +79,31 @@ public void setColour(int colour) {
     }
 
     @Override
-    public int getLight() {
-        return lightColour;
+    public int getLightPrimary() {
+        return primaryLightColour;
     }
 
     @Override
-    public void setLight(int colour) {
+    public void setLightPrimary(int colour) {
         if (colour < 0 || colour > 0xFFFFFF) colour = -1;
 
-        if (lightColour == colour) return;
-        lightColour = colour;
-        lightChanged = true;
+        if (primaryLightColour == colour) return;
+        primaryLightColour = colour;
+        primaryLightChanged = true;
+    }
+
+    @Override
+    public int getLightSecondary() {
+        return secondaryLightColour;
+    }
+
+    @Override
+    public void setLightSecondary(int colour) {
+        if (colour < 0 || colour > 0xFFFFFF) colour = -1;
+
+        if (secondaryLightColour == colour) return;
+        secondaryLightColour = colour;
+        secondaryLightChanged = true;
     }
 
     @Override
@@ -161,8 +177,9 @@ public void tickServer() {
         tracking.removeIf(player -> !player.isAlive() || player.level() != getLevel());
 
         // And now find any new players, add them to the tracking list, and broadcast state where appropriate.
-        var sendState = hasOutputChanged() || lightChanged;
-        lightChanged = false;
+        var sendState = hasOutputChanged() || primaryLightChanged || secondaryLightChanged;
+        primaryLightChanged = false;
+        secondaryLightChanged = false;
         if (sendState) {
             // Broadcast the state to all players
             tracking.addAll(getLevel().players());

projects/common/src/main/java/dan200/computercraft/shared/pocket/peripherals/PocketModem.java

@@ -34,6 +34,6 @@ public void update(IPocketAccess access, @Nullable IPeripheral peripheral) {
         modem.setLocation(access);
 
         var state = modem.getModemState();
-        if (state.pollChanged()) access.setLight(state.isOpen() ? 0xBA0000 : -1);
+        if (state.pollChanged()) access.setLightPrimary(state.isOpen() ? 0xBA0000 : -1);
     }
 }

projects/common/src/main/java/dan200/computercraft/shared/pocket/peripherals/PocketNFCPeripheral.java

@@ -25,7 +25,7 @@ public void update(IPocketAccess access) {
         setLocation(access);
 
         var state = getModemState();
-        if (state.pollChanged()) access.setLight(state.isOpen() ? 0xf39d20 : -1);
+        if (state.pollChanged()) access.setLightSecondary(state.isOpen() ? 0xf39d20 : -1);
     }
 
     @Override

projects/common/src/main/java/dan200/computercraft/shared/pocket/peripherals/PocketSpeakerPeripheral.java

@@ -43,6 +43,6 @@ public void update() {
 
         super.update();
 
-        access.setLight(madeSound() ? 0x3320fc : -1);
+        access.setLightPrimary(madeSound() ? 0x3320fc : -1);
     }
 }