HOW TO INSTALL XNA GAME STUDIO 3 1

Vector3 up = direction.Up;Vector3 look = direction.Forward;An example showing how to implement this structure is presented later in thechapter.Scaling Animations with Time Lapse Between FramesWhen animating objects, it is essential to ensure that your animations ru[r]

great number of elements contribute to the “feel” of a video game. The phys-ics, sounds, music, graphics, 3D models, and many other factors all influencethe gamer’s experience. These things are important, but possibly none is as importantas the camera you create for your game. T[r]

with the camera. Moving this listener object with the camera allows you to updatethe position and orientation of each sound as the viewer travels through the world.The AudioEmitter class stores the sound source’s position, speed, and orienta-tion. An AudioEmitter object is required for each s[r]

Lighting354Agood lighting system is often a key differentiator between a high-qualitygame and an amateur game. If you’re not sure about this, walk into any ar-cade and look at the games around you. Most likely, you will be more impressed withthe games that use advanced lighting techniques. By[r]

This chapter has shown how to draw 3D graphics. The vertices and primitive sur-faces drawn with these simple shapes are the foundation for all 3D game graphics.Even fiery effects and 3D models begin with vertices and primitive surfaces.CHAPTER 5 REVIEW EXERCISESTo get the most f[r]

{ // use camera look direction to get// rotation angle about Yfloat x = cam.view.X - cam.position.X;float z = cam.view.Z - cam.position.Z;return (float)Math.Atan2(x, z) + MathHelper.Pi;}Inside DrawSurfaces(), in the case that handles the TREE identifier, you needto add code to reset th[r]

used when creating the model.Loading and Controlling Quake II Models in CodeThe last demonstration showed you how to create your own Quake II model and an-imate it in code. This is definitely a useful exercise; however, Quake II models havethe power to perform far more interesti[r]

effect.Techniques[0].Passes[0].End(); // *END 1ST PASSeffect.Techniques[0].Passes[1].Begin(); // *START 2ND PASSdrawObject(SURFACE1); // draw 2nd surfaceeffect.Techniques[0].Passes[1].End(); // *END 2ND PASSeffect.End(); // end shaderWater Using Multitexturing ExampleIn this exa[r]

finicky process. If you plan to use a modeling tool, then experiment with it first sothat you are sure about the tool’s requirements for successful conversions.An inexpensive, but popular, lightweight 3D modeling program is MilkShape, bychUmbaLum sOft. MilkShape is used for the examples in th[r]

Adding a Car as a Third-Person ObjectThis example shows how to draw a model car as a third-person object. When you usethe third-person view, your camera is behind the object wherever you travel in the 3Dworld. When this example is complete, not only will the car drive in front of you a[r]

HEIGHT MAPSA height map is an image that stores information in each pixel about terrain eleva-tion. Using a height map to create terrain is popular because it is easy for designers togenerate landscapes with an image-editing tool, and it is easy to convert this informa-tion to i[r]

COLLISIONdetection determines whether two objectsoverlap and therefore have collided inyour virtual world. Accurate collision detection is fundamental to a solid game en-gine. Without collision detection, your cars would drive off the road, your peoplewould walk through buildings, and[r]

This example demonstrates how to add projectiles that can be launched on a linearpath from a rocket launcher, as shown back in Figure 19-1.In this example, you will shoot ten rockets into the air at a time. When a trigger orspacebar event occurs, the first available rocket (that[r]

với sự hỗ trợ tuyệt vời của directX, nhưng hôm nay chúng tôi sẽ giới thiệu với các bạn một nền tảng có thể nói là mới ở Việt Nam thậm chí trên thế giới nhưng thực sự thì không có gì là mới.Microsoft XNA đã có một quá trình phát triển qua nhiều năm, thời điểm hiện tại chúng tôi viết ebook này[r]

360 controller triggers. On every controller there is one left and one right trigger.Each trigger returns a float that ranges from 0 (for released) to 1 (for fully pressed).float GamePadState.Triggers.Rightfloat GamePadState.Triggers.LeftAdjusting the Input Device ResponsivenessThe res[r]

<! the font name to be imported ><FontName>Arial</FontName><! The size of the font. ><Size>14</Size><! The amount of spacing in between characters. ><Spacing>2</Spacing&g[r]

For the graphics engine used in this book, whenever a player moves the mouse orshifts the right thumbstick, he changes his view. In other words, his position in theworld stays the same, but his Look direction changes as his view target changes. Aseparate view is needed for each player in the game[r]

versioning because when you do so, you know exactly what will be released into the version.When you version set of resources from the branch, the current state of the branch frozen and versioned. You should not do that unless you are sure what is currently committed to the branch.Concurrency[r]

alternative-install.bat, which will installthe F# runtime libraries into the global assembly cache (GAC). You can also use this batch fileto install F# against the Shared Source Common Language Infrastructure (SSCLI), more com-monly known as Rotor, by using the –sscli command-line swit[r]

Compile. When optimizations are turned on, the compiler will perform extra processing on the code that makes it smaller and faster, altering the structure of the code. When debugging, you don’t want optimizations because you need the code you’re stepping through to match what the compiler pro[r]