A Simple Shooting Game in Android

PRESENTED BYMoutushi Majumder

Id:1018120257Moumita SarkarId:1018120267

SUPERVISED BYTRINA DASLecturer of

Department of Computer Science and Engineering (CSE)Premier University, Chittagong.

Objectives

There are lots of android action games developed by lots of developers around the world. Those games have their own specified features to attract the attention of the players. Visual appearance and a good theme development is a must for any kind of game. While developing this game we have kept in mind these facts and tried to create an application which is efficient in case of visual appearance and story. The application we developed is a combination of mazes and actions to ensure the satisfaction of the players playing this game. When a player moves through the game, by the time goes it would be more difficult and challenging for the player to step further ahead.

Literature Review

AndroidAndroid is a mobile operating system (OS) based on the Linux

kernel and currently developed by Google. With a interface based on direct manipulation, Android is designed primarily for touchscreen mobile devices such as smartphones and tablet computers, with specialized user interfaces for televisions (Android TV), cars (Android Auto), wrist watches (Android Wear) and games(Android Game). The OS uses touch inputs that loosely correspond to real-world actions, like swiping, tapping, pinching, and reverse pinching to manipulate on-screen objects, and a virtual keyboard.

Literature Review(Cont.)

Shooting GameA shooting game is a genre of video game where the player has limited spatial

control of his or her character (i.e., it is only possible to move on a 2D plane), and the focus is almost entirely on the defeat of the character's enemies using long-range weaponry.

Examples of STGs are R-Type, Giga Wing, Blazing Star, Zero Wing.

A general description of this project This game project has a repeatedly scrolling background as the main

character of this game (Minion) moves forward. The minion has a gun which is used to shoot bullets to incoming enemies which destroys the enemies after a certain number of bullets collides with the enemies. In this project we used gun as enemies which moves toward the Minion and when they touch the Minion collision occurs. As the number of collision increases health of the Minion decreases and the Minion dies if its health becomes zero. However, the Minion can avoid the collision by ducking and thus it preserves its health. To move forward the Minion has to go through different mazes. . When it finds an empty space it has to jump over it to move along. If somehow it fails to jump a particular distance it falls and dies.The enemies follow the minion and fly to it to destroy it which works within a certain distance. If the minion somehow avoids a gun without destroying it and moves forward and there are more incoming guns.

Application of the project

There are various applications of our project some of which but not limited to are:

The game uses artificial intelligence technique specifically

when guns follow the minion. It uses collision technique. When the bullets strike on the

guns or the guns attack the minion. Touch activity

Fundamental functions

The system can be broken up into three fundamental functions.

1. Game play: The user will have an intuitive interface for playing the game. He will be able to move the minion right, left, up and down simply by touching the screen of the mobile phone

2. Pause Game: The user can pause the game at any point and return right back into it.

3. Exit: There is an exit option which terminate the game.

Flowchart

Case Specification

Pre-Condition: Should have an android supported Open GLES

2.0 enabled multimedia mobile phone. Main Scenarios: There are a number of main scenarios in our

project.

1. Move Right – If the users touch the mobile screen which is horizontally greater than 400 pixels the minion will move right.

400 pixel

Case Specification(cont.)

2. Move Left – If the users touch the mobile screen which is horizontally less than 400 pixels and greater than 65 pixels the minion will move left.

335 pixel

Case Specification(cont.)

3. Jump – If the users touch the mobile screen which generates a matrix of (0, 285, 65, 65) pixels will make the minion jump in the air.

Case Specification(cont.)

4. Duck – If the users touch the mobile screen which generates a matrix of (0, 415, 65, 65) pixels will make the minion duck.

Case Specification(cont.)

5. Shoot – If the users touch the mobile screen which generates a matrix of (0, 350, 65, 65) pixels will make the minion shoot bullets toward enemies.

Case Specification(cont.)

6. Pause – If the users touch the mobile screen which generates a matrix of (0, 0, 35, 35) pixels will pause the game.

Condition of Enemy Health Damage

When guns approach to the minion the player touches the shooting area to shoot bullets. When the bullets touch the gun collision occurs. Each collision causes damage to the gun and after a certain damage the gun is destroyed and disappeared from the screen. After each gun destruction the players score five point.

score increases after each gun destroyed

touching the shooting area continuously will result continuous shooting of bullets

Condition of Minion Health Damage

If the player of this game doesn’t shoot enough to destroy the gun approaching the minion, the gun will collide with the minion causing health damage to the minion. The default gun health is 100 and it will decrease gradually upon collision. When the health reaches zero the gun dies and game over screen shows up.

When guns touch the minion collision occurs

health decreases if guns collide with minion

Algorithm of our project

1. Start with Touching Play area2. Tap the screen to start playing3. if moving right is required

Then touch the moving right area of the screen4. if moving left is required

Then touch the moving left area of the screen 5. if jumping is required Then touch the jump area of the screen6. if ducking is required then touch the duck area of the screen 7. if jumping over a distance is required

Then perform the steps 3 and 5 simultaneously

Algorithm of our project(cont.)

8. if shooting required then touch the shoot area of the screen9. if shooting in a higher area is required perform the steps 5 and

8 simultaneously.10. if moving right is required while ducking perform step 6 and

3 simultaneously.11. if pausing the game is required then Touch the pause area of

the screen.12. if resuming is required after pausing the game then touch the

resume area of the screen.13. if quitting the game is required then double tap the back

button of the mobile.

CONCLUSION

The ‘Minion Space War’ is a arcade shooting game, which is popular for last two decades , but largely spread in Europe only during the last few years, has been studied and analyzed in details in this report. A touch coordinate model has been formulated. In addition, the coordinate model has been implemented in a computer solver and in parallel a program has been developed able to generate enemies in the game. Some applications of this analytical and numerical work have been presented too. Finally our game comes with variety of different level according to the duration of playing. Further developments in this field should consider the uniqueness of solution level completion a level gate can be added. Further work could explore more maze generation algorithm that makes use of the unique nature of our difficulty level.