Simplify camera controllers perspective movement calculation

assets/lua/cameracontroller.lua

@@ -119,25 +119,23 @@ LuaScript = {
 
 		-- WASD movement
 		if Input.isKeyPressed(keyCode("GLFW_KEY_W")) then
-			self.transform.translate = glm.vec3( self.transform.translate + cameraSpeed * self.transform.rotate )
+			self.transform.translate = self.transform.translate + self.transform.rotate * cameraSpeed
 		end
 		if Input.isKeyPressed(keyCode("GLFW_KEY_S")) then
-			self.transform.translate = glm.vec3( self.transform.translate - cameraSpeed * self.transform.rotate )
+			self.transform.translate = self.transform.translate - self.transform.rotate * cameraSpeed
 		end
 		if Input.isKeyPressed(keyCode("GLFW_KEY_A")) then
-			self.transform.translate = glm.vec3( self.transform.translate -
+			self.transform.translate = self.transform.translate - glm.normalize(glm.cross(self.transform.rotate, self.camera.up)) * cameraSpeed
-				glm.normalize(glm.cross(self.transform.rotate, self.camera.up)) * cameraSpeed )
 		end
 		if Input.isKeyPressed(keyCode("GLFW_KEY_D")) then
-			self.transform.translate = glm.vec3( self.transform.translate +
+			self.transform.translate = self.transform.translate + glm.normalize(glm.cross(self.transform.rotate, self.camera.up)) * cameraSpeed
-				glm.normalize(glm.cross(self.transform.rotate, self.camera.up)) * cameraSpeed )
 		end
 		-- Up / down movement
 		if Input.isKeyPressed(keyCode("GLFW_KEY_SPACE")) then
-			self.transform.translate = glm.vec3( self.transform.translate.x, self.transform.translate.y + cameraSpeed, self.transform.translate.z )
+			self.transform.translate.y = self.transform.translate.y + cameraSpeed
 		end
 		if Input.isKeyPressed(keyCode("GLFW_KEY_LEFT_SHIFT")) then
-			self.transform.translate = glm.vec3( self.transform.translate.x, self.transform.translate.y - cameraSpeed, self.transform.translate.z )
+			self.transform.translate.y = self.transform.translate.y - cameraSpeed
 		end
 
 	end,

inferno/src/inferno/script/cameracontroller.cpp

@@ -98,25 +98,23 @@ namespace Inferno {
 
 		// WASD movement
 		if (Input::isKeyPressed(KeyCode("GLFW_KEY_W"))) {
-			transform->translate = { transform->translate + cameraSpeed * transform->rotate };
+			transform->translate += transform->rotate * cameraSpeed;
 		}
 		if (Input::isKeyPressed(KeyCode("GLFW_KEY_S"))) {
-			transform->translate = { transform->translate - cameraSpeed * transform->rotate };
+			transform->translate -= transform->rotate * cameraSpeed;
 		}
 		if (Input::isKeyPressed(KeyCode("GLFW_KEY_A"))) {
-			transform->translate = { transform->translate -
+			transform->translate -= glm::normalize(glm::cross(transform->rotate, m_camera->up)) * cameraSpeed;
-				glm::normalize(glm::cross(transform->rotate, m_camera->up)) * cameraSpeed };
 		}
 		if (Input::isKeyPressed(KeyCode("GLFW_KEY_D"))) {
-			transform->translate = { transform->translate +
+			transform->translate += glm::normalize(glm::cross(transform->rotate, m_camera->up)) * cameraSpeed;
-				glm::normalize(glm::cross(transform->rotate, m_camera->up)) * cameraSpeed };
 		}
 		// Up / down movement
 		if (Input::isKeyPressed(KeyCode("GLFW_KEY_SPACE"))) {
-			transform->translate = { transform->translate.x, transform->translate.y + cameraSpeed, transform->translate.z };
+			transform->translate.y += cameraSpeed;
 		}
 		if (Input::isKeyPressed(KeyCode("GLFW_KEY_LEFT_SHIFT"))) {
-			transform->translate = { transform->translate.x, transform->translate.y - cameraSpeed, transform->translate.z };
+			transform->translate.y -= cameraSpeed;
 		}
 	}
 }