Build your very own 2D physics-based game engine simulation system for rigid body dynamics. Beginning from scratch, in this book you will cover the implementation technologies, HTML5 and JavaScript; assemble a simple and yet complete fundamental mathematics support library; define basic rigid body behaviors; detect and resolve rigid body collisions; and simulate collision responses after the collisions. In this way, by the end of Building a 2D Game Physics Engine, you will have an in‐depth understanding of the specific concepts and events, implementation details, and actual source code of a physics game engine that is suitable for building 2D games or templates for any 2D games you can create and can be played across the Internet via popular web‐browsers. What You'll Learn Gain an understanding of 2D game engine physics and how to utilize it in your own games Describe the basic behaviors of rigid bodies Detect collisions between rigid bodies Resolve interpretations after rigid body collisions Model and implement rigid body impulse responses Who This Book Is For Game enthusiasts, hobbyists, and anyone who is interested in building their own 2D physics game engines but is unsure of how to begin.
In this book, Mu crafts a sociology of resilience through his multi-year research with Australian students. The content is not merely concerned with individual achievements in precarious conditions but also ponders over transformative, reflexive, and power-rejective everyday practices that make social change possible, probable, and even inevitable. Since Emmy Werner and her colleagues discovered the "self-righting" and "invincible" children on the Hawaiian island of Kauai who fared well despite exposure to significant household risks, positive psychology has markedly advanced the knowledge about child and youth resilience to adversities. Yet, many children and adolescents continue to slide through system cracks. This fact does not invalidate psychology of resilience; rather, it urges new frameworks to break the reproductive circle of inequality. Reframing the traditional psychological notion of resilience through recourse to Bourdieu’s relational and reflexive sociology, the book moves beyond individual adaptation to adverse conditions and takes a deep dive into sociological resilience to structural problems. It offers school professionals and educational researchers an epistemological tool to reapproach resilience and reappropriate Bourdieu for social change. Offering scholarship that will interest researchers in the areas of child and youth resilience, sociology of resilience, and sociology of education, the volume is written to engage with the intellectual work of both established scholars and emerging researchers within Australia and beyond. The empirical analyses also provide useful insights for educational professionals in schools and resilience researchers in universities.
The chilling true story of the Spahalski brothers, who looked alike, acted alike—and killed alike . . . Robert Bruce Spahalski and Stephen Spahalski were identical twins. Same hair, same eyes, same thirst for blood. Stephen was the first brother to kill—by viciously bashing in storeowner Ronald Ripley’s head with a hammer. Unlike Stephen, Robert didn’t stop with just one victim. With the cord of an iron, Robert strangled prostitute Morraine Armstrong during sex. With his bare hands, he choked his girlfriend Adrian Berger. He brutally bludgeoned to death businessman Charles Grande. Even his friend Vivian Irizarry didn’t escape his lurid killing spree. Robert ultimately confessed to the four murders in vivid detail. But police suspected there were many more. The twins’ twisted story became even more bizarre as the true nature of their sick psyches came to light. In Killer Twins, through extensive interviews, Michael Benson reveals for the first time the horrific details of Robert Spahalski’s life and crimes in a disturbing look at the inner workings of a homicidal mind.
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