first commit, basic logic works

1 files changed, 104 insertions, 0 deletions

diff --git a/Gate.cpp b/Gate.cpp
new file mode 100644
index 0000000..0aaed25
--- /dev/null
+++ b/Gate.cpp
@@ -0,0 +1,104 @@
+#include "Gate.h"
+
+int Gate::gate_id_counter = 0;
+
+Gate::Gate(GATE_TYPE type, int x, int y, int width, int height)
+{
+	this->gate_type = type;
+	this->input_gate1 = nullptr;
+	this->input_gate2 = nullptr;
+	this->output_gate = nullptr;
+	this->id = Gate::gate_id_counter++; // increment counter after assigning
+	this->x = x;
+	this->y = y;
+	this->w = width;
+	this->h = height;
+}
+
+Gate::~Gate() {}
+
+void Gate::update_state()
+{
+	switch (this->gate_type)
+	{
+		case INPUT:
+		{
+			/* we're a simple input, do nothing */
+			break;
+		}
+
+		case OUTPUT:
+		{
+			/* we're a simple output, do nothing */
+			if (input_gate1 && input_gate1->get_output_state() == true)
+			{
+				this->output_state = true;
+			}
+			else if (input_gate1)
+			{
+				this->output_state = false;
+			}
+			break;
+		}
+
+
+		case AND:
+		{
+			if (!input_gate1 || !input_gate2) {this->output_state = false; return; }
+			output_state = input_gate1->get_output_state() & input_gate2->get_output_state();
+			break;
+		}
+
+
+		case OR:
+		{
+			if (!input_gate1 || !input_gate2) {this->output_state = false; return; }
+			output_state = input_gate1->get_output_state() | input_gate2->get_output_state();
+			break;
+		}
+
+
+		case NOT:
+		{
+			/* NOT only cares for input 1 */
+			if (!input_gate1) {this->output_state = false; return; }
+			output_state = !input_gate1->get_output_state();
+			break;
+		}
+
+
+		case NAND:
+		{
+			if (!input_gate1 || !input_gate2) {this->output_state = false; return; }
+			output_state = ~(input_gate1->get_output_state() & input_gate2->get_output_state());
+			break;
+		}
+
+
+		case NOR:
+		{
+			if (!input_gate1 || !input_gate2) {this->output_state = false; return; }
+			output_state = ~(input_gate1->get_output_state() | input_gate2->get_output_state());
+			break;
+		}
+
+
+		case XOR:
+		{
+			if (!input_gate1 || !input_gate2) {this->output_state = false; return; }
+			output_state = input_gate1->get_output_state() ^ input_gate2->get_output_state();
+			break;
+		}
+
+
+		case XNOR:
+		{
+			if (!input_gate1 || !input_gate2) {this->output_state = false; return; }
+			output_state = ~(input_gate1->get_output_state() ^ input_gate2->get_output_state());
+			break;
+		}
+
+		default:
+			break;
+	}
+}