[CSM] Add on_death, on_hp_modification & oh_damage_taken callbacks (#5093)

* Add on_death callback
* Add on_hp_modification & on_damage_taken callbacks
* move preview code to preview.lua

2 files changed, 39 insertions, 0 deletions

diff --git a/src/script/cpp_api/s_client.cpp b/src/script/cpp_api/s_client.cpp
index 08af8ebdc..f0676f4c2 100644
--- a/src/script/cpp_api/s_client.cpp
+++ b/src/script/cpp_api/s_client.cpp
@@ -59,3 +59,38 @@ bool ScriptApiClient::on_receiving_message(const std::string &message)
 	bool ate = lua_toboolean(L, -1);
 	return ate;
 }
+
+void ScriptApiClient::on_damage_taken(int32_t damage_amount)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get core.registered_on_chat_messages
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_damage_taken");
+	// Call callbacks
+	lua_pushinteger(L, damage_amount);
+	runCallbacks(1, RUN_CALLBACKS_MODE_OR_SC);
+}
+
+void ScriptApiClient::on_hp_modification(int32_t newhp)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get core.registered_on_chat_messages
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_hp_modification");
+	// Call callbacks
+	lua_pushinteger(L, newhp);
+	runCallbacks(1, RUN_CALLBACKS_MODE_OR_SC);
+}
+
+void ScriptApiClient::on_death()
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get registered shutdown hooks
+	lua_getglobal(L, "core");
+	lua_getfield(L, -1, "registered_on_death");
+	// Call callbacks
+	runCallbacks(0, RUN_CALLBACKS_MODE_FIRST);
+}
diff --git a/src/script/cpp_api/s_client.h b/src/script/cpp_api/s_client.h
index 08fdd8fc0..3155c7e67 100644
--- a/src/script/cpp_api/s_client.h
+++ b/src/script/cpp_api/s_client.h
@@ -32,5 +32,9 @@ public:
 	// Chat message handlers
 	bool on_sending_message(const std::string &message);
 	bool on_receiving_message(const std::string &message);
+
+	void on_damage_taken(int32_t damage_amount);
+	void on_hp_modification(int32_t newhp);
+	void on_death();
 };
 #endif