Multiple point lights

enginecustom/applicationclass.cpp

@@ -12,6 +12,7 @@ ApplicationClass::ApplicationClass()
 	m_Bitmap = 0;
 	m_Sprite = 0;
 	m_Timer = 0;
+	m_Lights = 0;
 }
 
 
@@ -57,7 +58,7 @@ bool ApplicationClass::Initialize(int screenWidth, int screenHeight, HWND hwnd)
 	}
 
 	// Set the initial position of the camera.
-	m_Camera->SetPosition(0.0f, 0.0f, -10.0f);
+	m_Camera->SetPosition(0.0f, 2.0f, -12.0f);
 	m_Camera->SetRotation(0.0f, 0.0f, 0.0f);
 
 	// Create and initialize the texture shader object.
@@ -114,7 +115,7 @@ bool ApplicationClass::Initialize(int screenWidth, int screenHeight, HWND hwnd)
 	}
 
 	// Set the file name of the model.
-	strcpy_s(modelFilename, "sphere.txt");
+	strcpy_s(modelFilename, "plane.txt");
 
 	// Set the file name of the textures.
 	strcpy_s(textureFilename1, "stone01.tga");
@@ -141,14 +142,24 @@ bool ApplicationClass::Initialize(int screenWidth, int screenHeight, HWND hwnd)
 		return false;
 	}
 
-	// Create and initialize the light object.
-	m_Light = new LightClass;
+	// Set the number of lights we will use.
+	m_numLights = 4;
 
-	m_Light->SetAmbientColor(0.15f, 0.15f, 0.15f, 1.0f);
-	m_Light->SetDiffuseColor(1.0f, 1.0f, 1.0f, 1.0f);
-	m_Light->SetDirection(1.0f, 0.0f, 1.0f);
-	m_Light->SetSpecularColor(1.0f, 1.0f, 1.0f, 1.0f);
-	m_Light->SetSpecularPower(32.0f);
+	// Create and initialize the light objects array.
+	m_Lights = new LightClass[m_numLights];
+
+	// Manually set the color and position of each light.
+	m_Lights[0].SetDiffuseColor(1.0f, 0.0f, 0.0f, 1.0f);  // Red
+	m_Lights[0].SetPosition(-3.0f, 1.0f, 3.0f);
+
+	m_Lights[1].SetDiffuseColor(0.0f, 1.0f, 0.0f, 1.0f);  // Green
+	m_Lights[1].SetPosition(3.0f, 1.0f, 3.0f);
+
+	m_Lights[2].SetDiffuseColor(0.0f, 0.0f, 1.0f, 1.0f);  // Blue
+	m_Lights[2].SetPosition(-3.0f, 1.0f, -3.0f);
+
+	m_Lights[3].SetDiffuseColor(1.0f, 1.0f, 1.0f, 1.0f);  // White
+	m_Lights[3].SetPosition(3.0f, 1.0f, -3.0f);
 
 	return true;
 }
@@ -171,12 +182,12 @@ void ApplicationClass::Shutdown()
 		m_Sprite = 0;
 	}
 
-	// Release the light object.
-	if (m_Light)
-	{
-		delete m_Light;
-		m_Light = 0;
-	}
+	  // Release the light objects.
+    if(m_Lights)
+    {
+        delete [] m_Lights;
+        m_Lights = 0;
+    }
 
 	// Release the light shader object.
 	if (m_LightShader)
@@ -292,6 +303,8 @@ bool ApplicationClass::Frame()
 bool ApplicationClass::Render(float rotation, float x, float y, float z)
 {
 	XMMATRIX worldMatrix, viewMatrix, orthoMatrix, projectionMatrix, rotateMatrix, translateMatrix, scaleMatrix, srMatrix;
+	XMFLOAT4 diffuseColor[4], lightPosition[4];
+	int i;
 	bool result;
 
 	// Clear the buffers to begin the scene.
@@ -339,7 +352,15 @@ bool ApplicationClass::Render(float rotation, float x, float y, float z)
 		return false;
 	}
 
+	// Get the light properties.
+	for (i = 0; i < m_numLights; i++)
+	{
+		// Create the diffuse color array from the four light colors.
+		diffuseColor[i] = m_Lights[i].GetDiffuseColor();
 
+		// Create the light position array from the four light positions.
+		lightPosition[i] = m_Lights[i].GetPosition();
+	}
 
 	// Render the model using the multitexture shader.
 	result = m_MultiTextureShader->Render(m_Direct3D->GetDeviceContext(), m_Model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix,
@@ -356,15 +377,6 @@ bool ApplicationClass::Render(float rotation, float x, float y, float z)
 	// Render the model using the multitexture shader.
 	m_Model->Render(m_Direct3D->GetDeviceContext());
 
-	// Render the model using the light shader.
-	result = m_LightShader->Render(m_Direct3D->GetDeviceContext(), m_Model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix, m_Model->GetTexture(0),
-		m_Light->GetDirection(), m_Light->GetAmbientColor(), m_Light->GetDiffuseColor(),
-		m_Camera->GetPosition(), m_Light->GetSpecularColor(), m_Light->GetSpecularPower());
-	if (!result)
-	{
-		return false;
-	}
-
 	scaleMatrix = XMMatrixScaling(2.0f, 2.0f, 2.0f);  // Build the scaling matrix.
 	rotateMatrix = XMMatrixRotationY(-rotation);  // Build the rotation matrix.
 	translateMatrix = XMMatrixTranslation(-x, -y, -z);  // Build the translation matrix.
@@ -376,6 +388,14 @@ bool ApplicationClass::Render(float rotation, float x, float y, float z)
 	// Put the model vertex and index buffers on the graphics pipeline to prepare them for drawing.
 	m_Model->Render(m_Direct3D->GetDeviceContext());
 
+	// Render the model using the light shader.
+	result = m_LightShader->Render(m_Direct3D->GetDeviceContext(), m_Model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix, m_Model->GetTexture(0),
+		diffuseColor, lightPosition);
+	if (!result)
+	{
+		return false;
+	}
+
 	// Turn the Z buffer back on now that all 2D rendering has completed.
 	m_Direct3D->TurnZBufferOn();