1 files changed, 50 insertions, 0 deletions
diff --git a/source/game/StarEntitySplash.cpp b/source/game/StarEntitySplash.cpp
new file mode 100644
index 0000000..6a5a5ab
--- /dev/null
+++ b/source/game/StarEntitySplash.cpp
@@ -0,0 +1,50 @@
+#include "StarEntitySplash.hpp"
+#include "StarWorld.hpp"
+#include "StarLiquidsDatabase.hpp"
+#include "StarRoot.hpp"
+#include "StarJsonExtra.hpp"
+
+namespace Star {
+
+EntitySplashConfig::EntitySplashConfig() {}
+
+EntitySplashConfig::EntitySplashConfig(Json const& config) {
+  splashSpeedMin = config.get("splashSpeedMin").toFloat();
+  splashMinWaterLevel = config.get("splashMinWaterLevel").toFloat();
+  splashBottomSensor = jsonToVec2F(config.get("splashBottomSensor"));
+  splashTopSensor = jsonToVec2F(config.get("splashTopSensor"));
+  numSplashParticles = config.get("numSplashParticles").toInt();
+  splashYVelocityFactor = config.get("splashYVelocityFactor").toFloat();
+  splashParticle = Particle(config.get("splashParticle").toObject());
+  splashParticleVariance = Particle(config.get("splashParticleVariance").toObject());
+}
+
+List<Particle> EntitySplashConfig::doSplash(Vec2F position, Vec2F velocity, World* world) const {
+  List<Particle> particles;
+  if (std::fabs(velocity[1]) >= splashSpeedMin) {
+    auto liquidDb = Root::singleton().liquidsDatabase();
+    Vec2I bottom = Vec2I::floor(position + splashBottomSensor);
+    Vec2I top = Vec2I::floor(position + splashTopSensor);
+    if (world->liquidLevel(bottom).level - world->liquidLevel(top).level >= splashMinWaterLevel) {
+      LiquidId liquidType;
+      auto bottomLiquid = world->liquidLevel(bottom);
+      auto topLiquid = world->liquidLevel(top);
+      if (bottomLiquid.level > 0 && (int)bottomLiquid.liquid)
+        liquidType = bottomLiquid.liquid;
+      else
+        liquidType = topLiquid.liquid;
+      Color particleColor = Color::rgba(liquidDb->liquidSettings(liquidType)->liquidColor);
+      for (int i = 0; i < numSplashParticles; ++i) {
+        Particle newSplashParticle = splashParticle;
+        newSplashParticle.position = position;
+        newSplashParticle.velocity[1] = std::fabs(velocity[1]) * splashYVelocityFactor;
+        newSplashParticle.color = particleColor;
+        newSplashParticle.applyVariance(splashParticleVariance);
+        particles.append(newSplashParticle);
+      }
+    }
+  }
+  return particles;
+}
+
+}