fire hearts in testmod

src/main/java/com/github/thedeathlycow/thermoo/api/client/HeartOverlayRenderEvent.java

@@ -40,14 +40,14 @@ public interface RenderHealthBarCallback {
          * @param heartPositions  An array of heart positions on the HUD. Elements may be null, indicating that a heart
          *                        should not be rendered at this index.
          * @param displayHealth   How many half hearts are to be displayed
-         * @param maxDisplayHeath The maximum number of half hearts to be displayed
+         * @param maxDisplayHealth The maximum number of half hearts to be displayed
          */
         void render(
                 DrawContext context,
                 PlayerEntity player,
                 Vector2i[] heartPositions,
                 int displayHealth,
-                int maxDisplayHeath
+                int maxDisplayHealth
         );
 
     }

src/main/java/com/github/thedeathlycow/thermoo/api/season/ThermooSeasons.java

@@ -5,7 +5,8 @@
 import java.util.Optional;
 
 /**
- * Mod-agnostic Seasons enum for any Thermoo dependencies.
+ * Mod-agnostic Seasons enum. Thermoo does not provide seasons itself, but this can be used to better integrate with any
+ * mods that do provide seasons.
  */
 public enum ThermooSeasons {
     SPRING,

src/testmod/java/com/github/thedeathlycow/thermoo/testmod/ThermooTestModClient.java

@@ -0,0 +1,62 @@
+package com.github.thedeathlycow.thermoo.testmod;
+
+import com.github.thedeathlycow.thermoo.api.client.HeartOverlayRenderEvent;
+import com.github.thedeathlycow.thermoo.impl.Thermoo;
+import net.fabricmc.api.ClientModInitializer;
+import net.minecraft.client.gui.DrawContext;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.MathHelper;
+import org.jetbrains.annotations.NotNull;
+import org.joml.Vector2i;
+
+public class ThermooTestModClient implements ClientModInitializer {
+
+    public static final Identifier HEART_OVERLAY_TEXTURE = Thermoo.id("textures/gui/fire_heart_overlay.png");
+
+    private static final int TEXTURE_WIDTH = 18;
+    private static final int TEXTURE_HEIGHT = 30;
+
+    @Override
+    public void onInitializeClient() {
+        HeartOverlayRenderEvent.AFTER_HEALTH_BAR.register(ThermooTestModClient::renderFireHeartBar);
+    }
+
+    public static void renderFireHeartBar(
+            DrawContext context,
+            PlayerEntity player,
+            Vector2i[] heartPositions,
+            int displayHealth,
+            int maxDisplayHealth
+    ) {
+        int fireHeartPoints = getNumFirePoints(player, maxDisplayHealth);
+        int fireHearts = getNumFireHeartsFromPoints(fireHeartPoints, maxDisplayHealth);
+
+        for (int m = 0; m < fireHearts; m++) {
+            // is half heart if this is the last heart being rendered and we have an odd
+            // number of frozen health points
+            int x = heartPositions[m].x;
+            int y = heartPositions[m].y - 1;
+            boolean isHalfHeart = m + 1 >= fireHearts && (fireHeartPoints & 1) == 1; // is odd check
+
+            int u = isHalfHeart ? 9 : 0;
+
+            context.drawTexture(HEART_OVERLAY_TEXTURE, x, y, u, 0, 9, 10, TEXTURE_WIDTH, TEXTURE_HEIGHT);
+        }
+    }
+
+    private static int getNumFirePoints(@NotNull PlayerEntity player, int maxDisplayHealth) {
+        float tempScale = player.thermoo$getTemperatureScale();
+        if (tempScale <= 0f) {
+            return 0;
+        }
+        return (int) (tempScale * maxDisplayHealth);
+    }
+
+    private static int getNumFireHeartsFromPoints(int fireHealthPoints, int maxDisplayHealth) {
+        // number of whole hearts
+        int frozenHealthHearts = MathHelper.ceil(fireHealthPoints / 2.0f);
+
+        return Math.min(maxDisplayHealth / 2, frozenHealthHearts);
+    }
+}

src/testmod/resources/fabric.mod.json

@@ -9,6 +9,9 @@
 		"main": [
 			"com.github.thedeathlycow.thermoo.testmod.ThermooTestMod"
 		],
+		"client": [
+			"com.github.thedeathlycow.thermoo.testmod.ThermooTestModClient"
+		],
 		"fabric-gametest": [
 		]
 	}