From 34713af22308aec6467c731add7eb8fe6019a893 Mon Sep 17 00:00:00 2001
From: Michele Michetti <michele.michetti91@gmail.com>
Date: Tue, 18 Jun 2024 23:25:41 +0200
Subject: [PATCH] Defined bitmask, populated functions, added bit manipulation
 in utils

---
 game/include/Interaction.hpp |  9 +++++-
 game/include/utils.hpp       | 54 +++++++++++++++++++++++++++++++++++-
 game/src/Interaction.cpp     | 46 ++++++++++++++++++++++++++----
 3 files changed, 102 insertions(+), 7 deletions(-)

diff --git a/game/include/Interaction.hpp b/game/include/Interaction.hpp
index 80d2745..815f53c 100644
--- a/game/include/Interaction.hpp
+++ b/game/include/Interaction.hpp
@@ -24,11 +24,18 @@ class Interaction {
     uint8_t getType();
     uint8_t getStatus();
 
+    //Interaction status reading
     bool isInteraction();
-    void playInteraction();
     bool isInteractionEnded();
+
+    //Interaction status manipulation
     void enableInteraction();
     void disableInteraction();
+    void playInteraction();
+    void endInteraction();
+    void increaseInteractionCounter();
+
+    void callFromFile();
 };
 
 }  // namespace _interaction
\ No newline at end of file
diff --git a/game/include/utils.hpp b/game/include/utils.hpp
index c0698b0..714c7e4 100644
--- a/game/include/utils.hpp
+++ b/game/include/utils.hpp
@@ -1,5 +1,5 @@
 #pragma once
-
+#include <bits/stdc++.h>
 #include <stdint.h>
 
 namespace utils {
@@ -25,4 +25,56 @@ enum InteractionType : uint8_t {
     trigger = 0b01000000,
     trainer = 0b10000000
 };
+
+enum InteractionStatus : uint8_t {
+    ENABLED = 0b00000001,
+    INTERACTION_NEVER_HAPPENED = 0b00000010,
+    IS_PLAYING = 0b00000100,
+    INTERACTION_ENDED = 0b00001000,
+    PLAYED_BIT1 = 0b00010000,
+    PLAYED_BIT2 = 0b00100000,
+    PLAYED_BIT3 = 0b01000000,
+    PLAYED_BIT4 = 0b10000000
+
+};
+
+//read n-th bit
+template <class T>
+bool readBit(T field, T n) {
+    return field & ((T)1<<n);
+}
+//TODO below have to be template func
+// function to find the position of rightmost set bit
+uint8_t getPosOfRightmostSetBit(uint8_t n) {
+    return std::log2(n & -n);
+}
+ 
+// function to toggle the last m bits
+uint8_t toggleLastKBits(uint8_t n, uint8_t k) {
+    // calculating a number 'num' having 'm' bits and all are set
+    uint8_t num = (1 << k) - 1;
+ 
+    // toggle the last m bits and return the number
+    return (n ^ num);
+}
+ 
+// function to increment a number by one by manipulating the bits
+uint8_t incrementByOne(uint8_t n) {
+    // get position of rightmost unset bit
+    // if all bits of 'n' are set, then the
+    // bit left to the MSB is the rightmost
+    // unset bit
+    uint8_t k = getPosOfRightmostSetBit(~n);
+ 
+    // kth bit of n is being set by this operation
+    n = ((1 << k) | n);
+ 
+    // from the right toggle all the bits before the k-th bit
+    if (k != 0) {
+        n = toggleLastKBits(n, k);
+    }
+
+    return n;
+}
+
 }  // namespace utils
diff --git a/game/src/Interaction.cpp b/game/src/Interaction.cpp
index eb2e900..52cdefa 100644
--- a/game/src/Interaction.cpp
+++ b/game/src/Interaction.cpp
@@ -26,8 +26,44 @@ uint32_t Interaction::getId() { return id_; }
 uint8_t Interaction::getType() { return type_; }
 uint8_t Interaction::getStatus() { return status_bit_mask_; }
 
-bool Interaction::isInteraction() { return false; }
-void Interaction::playInteraction() { return; }
-bool Interaction::isInteractionEnded() { return false; }
-void Interaction::enableInteraction() { return; }
-void Interaction::disableInteraction() { return; }
\ No newline at end of file
+bool Interaction::isInteraction() { 
+    if( !(status_bit_mask_ & utils::InteractionStatus::ENABLED) ) {
+        return false;
+    }
+    if( !isInteractionEnded() ) {
+        return false;
+    }
+    return true;
+
+    
+}
+bool Interaction::isInteractionEnded() {
+    if( status_bit_mask_ & utils::InteractionStatus::INTERACTION_ENDED ) {
+        return true;
+    }
+    return false;
+}
+
+void Interaction::enableInteraction() {
+    status_bit_mask_ |= utils::InteractionStatus::ENABLED;
+}
+void Interaction::disableInteraction() { 
+    status_bit_mask_ & ~utils::InteractionStatus::ENABLED;
+}
+void Interaction::playInteraction() { 
+    status_bit_mask_ |= utils::InteractionStatus::IS_PLAYING;
+    callFromFile();
+    increaseInteractionCounter();
+}
+void Interaction::endInteraction() { 
+    status_bit_mask_ |= utils::InteractionStatus::INTERACTION_ENDED;
+    status_bit_mask_ & ~utils::InteractionStatus::IS_PLAYING;
+}
+void Interaction::increaseInteractionCounter() {
+    uint8_t counter = 0;
+    for(uint8_t bit_pos = 4; bit_pos < 8; ++bit_pos) {
+        counter |= utils::readBit<uint8_t>(status_bit_mask_,bit_pos); 
+    }
+    counter = utils::incrementByOne(counter);
+    //TODO: copy counter to bitmask
+}
\ No newline at end of file