Game Maker Tutorial 2. A SCROLLING SHOOTER 1945prof.ysu.ac.kr/down.asp?file=game maker(2)-scrolling... · Game Maker Tutorial 2. A SCROLLING SHOOTER 1945 영산대학교2011년도2학기게임제작개론

Game Maker Tutorial2. A SCROLLING SHOOTER 1945

2011-09-09영산대학교 2011년도 2학기 게임제작개론 1

Global Variables score the current value of the score

lives the current number of lives

mouse_x x-position of the mouse

mouse_y y-position of the mouse

room_speed current speed of the room (in steps per second)

room_caption caption shown in the window title

room_width width of the room in pixels

room_height height of the room in pixels

2011-09-09

영산대학교 2011년도 2학기게임제작개론

2

Introduction Very popular type of arcade action game

The player controls an object, for example a plane, spaceship, or car, which moves over a scrolling background.

Obstacles appear on the background that must be avoided and enemies appear that must be shot.

Often bonus objects appear that can be picked up for addition benefits.

During the game the number, variety, and strength of the enemies increases making it harder and harder to survive.

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3

Agenda

The player flies in a plane over a sea and

enemy planes try to destroy the player.

How to create the illusion of motion using a

scrolling background

How to control the plane

How to make enemies and bullets

How to deal with the score, with lives and

with the damage of the plane.

The use of variables.

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Variables and properties x : the x-coordinate of the instance

y : the y-coordinate of the instance

hspeed : the horizontal speed (in pixels per step)

vspeed : the vertical speed (in pixels per step)

direction: the current direction of motion in degrees (0-360; 0 is horizontally to the right)

speed: the current speed in this direction

visible: whether the object is visible (1) or invisible (0)

solid: whether the object is solid (1) or not solid (0)

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For Example

Our spaceship to be able to shoot only once every five steps in the game

◦ can_shoot : the variable to see whether this is allowed

1 : shooting is allowed

0 : shooting is temporarily not allowed

◦ the creation event/ an alarm event

variables to indicate whether the spaceship has an active shield, whether it has some special weapon upgrade, etc.

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Set the value of a variable

If a variable has a value

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Set the value of a variable

To change the value of a

given variable

To specify the name of

the variable and the new

value

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If a variable has a value To check what the value of

a particular variable is

◦ If the value of the variable is equal to the number given, the question returns true and the next action or block of actions is performed.

◦ If it is not equal, the next action or block of actions is not performed.

To indicate that the check should be whether the variable value is smaller than the given value or larger than the given value

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The player controls the big yellow plane that flies upwards.

All four types of enemy planes are shown in the image above.

At the bottom the score, number of lives left, and

the damage (in the form of the green bar) are shown.

1945 design document

Description

◦ Control a plane flying over a sea

◦ Encounter an increasing number of enemy planes

that try to destroy you.

◦ Avoid these or shoot them.

◦ The goal is to stay alive as long as you can and to

destroy as many enemy planes as you can.

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Game objects

◦ The background : A scrolling sea with some islands.

◦ The player’s plane: Flies over this sea.

◦ Bullets: Shot to destroy enemy planes.

◦ Four types of enemy planes:

A plane that you encounter and should be destroyed,

A plane that fires bullets downwards,

A plane that fires bullets towards the player’s plane,

and a fast enemy plane that comes from behind rather

than from the front.

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Sounds

◦ There are some explosion sounds and there is some background music.

Controls

◦ The player controls the game with the arrow keys.

◦ With the space key you fire a bullet.

◦ Only one bullet can be fired every five steps.

Game flow

◦ The player immediately jumps into the game.

◦ The player has three lives.

◦ When all lives are gone a high-score table is shown.

◦ Pressing the <F1> (help) key will give a brief explanation.

◦ Pressing the <Esc> key will end the game.

Levels

◦ There is just one level, but more and more enemy planes will arrive:

◦ first only the easy type but later the more difficult types.

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- SCROLLING

BACKGROUND

:- 4 WAYS MOVING OBJECTS


작업 파일 위치

Tutorial 중 shooter.zip 파일 풀기

GM Tutorial(2)-Scrooling Shooter

◦ Examples

◦ Resources

◦ GM Tutorial -Scrooling Shooter.pdf

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The illusion of motion(동작의 환상)

In the game 1945 the game world scrolls

vertically.

The impression as if it flies over the scrolling

background

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How do we create a scrolling background

Two possibilities

1. To use a tiling background image that

moves downwards through the room

2. To build a much larger room but only show part

of the room using a so-called view

small image as a background resource

name : back_water

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Water.png

back_water


To change three settings


1. Uncheck the box labeled Draw background color


2. In the middle click on the menu icon and

select the back_water background image


3. To make the background move, set the Vert.

speed to 2.

2


To enhance the feeling of motion


island1.png island2.png island3.png

spr_island1

island1.png

spr_island2

island2.png

spr_island3

island3.png


spr_island2


spr_island3


Step event of the island

When the island disappears below the bottom

of the room we want to make it reappear at

the top

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obj_island1


Drag & drop

Control tab

Test Variable


yroom_height

larger than

A random position of objects

To jump to a random position above the

room

◦ function random()

◦ random(room_width) as the x-coordinate

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random(room_width)

-65

Drag & drop

move tab



The main plane

A sprite for the plane

◦ a propeller plane

◦ a sprite consisting of

three images

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Set the X and Y of the Origin to 32

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spr_myplane

32 32Myplane_sprite3.png



obj_myplane

x

40

larger than


-4

0









640(room_width)

480

(room_height)

(0,0)

(640,480)

[2] ENEMY AND WEAPON- 파일명: 1945_2.GMK


Enemy and Weapon

To extend our game with some enemy planes and a canon on the plane that you can fire

◦ a bullet sprite

◦ The bullet should be fired when the user presses the space key

◦ Allow the player to fire two bullets every second

a variable can_shoot : set this variable to 1/0

◦ If so we create a bullet just in front of the ship, relative at position (0,-16)

◦ Set alarm 0 to 15.

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Create a Sprite : Bullet(1)


spr_bullet

Bullet.png

Create an bullet object

an object with

bullet sprite.

◦ the default depth 0

appear below the

plane but above the

islands.

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spr_bullet

obj_bullet

Creation event : bullet


• we give it a vertical speed of –8 to make it

move upwards.

-8

Move tab


y

-16

smaller than

Control tab

- variables

main1 tab

- object


can_shoot

1

Control tab

- variables


can_shoot

1

Control tab

- variables



can_shoot

1

equal to

Control tab

- variables


obj_bullet

0

-16

main1 tab

- Objects


can_shoot

0

Control tab

- variables


15

Alam 0

Main2 tab

-Timing



Make the first enemy

a small plane

◦ that simply flies downwards

◦ It does not shoot but when it hits the main plane

the game is lost.

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Create a sprite

for the enemy plane and an object

◦ In the creation event we set the vertical speed to 4

to make the plane fly downwards.

◦ When the plane reaches the bottom of the room

we make it reappear at a random place at the top

of the room, in exactly the same way as we did for

the islands.

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Create a sprite : an enemy

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spr_enemy1

enemy1_sprite3.png

Create enemy events

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• Set the vertical speed to 4 to make the plane fly

downwards

4

Move of Enemy plane

When the plane reaches the bottom of the

room we make it reappear at a random place

at the top of the room

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Object Event : obj_enemy1


y

room_height+32

larger than random(room_width)

-16

Collision events for the enemy plane

The collision event with the bullet

◦ destroy the enemy plane, and

The collision event with the main plane

◦ destroy the main plane and end the game

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The collision event with the bullet

A number of actions

◦ A sound for a small explosion

◦ A sprite that indicates the explosion

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Sounds for two small explosion


snd_explosion1snd_explosion2

snd_explosion1.wav

snd_explosion2.wav

Create a Sprite : Explosion1


spr_explosion1

explosion1 _sprite6.png

Create a Sprite : Explosion2


spr_explosion2

explosion2 _sprite7.png

Create an Event : explosion1


obj_explosion1

spr_explosion1

Create an Event : explosion2


Tab: main2

Tab: score

Tab: main2

Tab: main1obj_explosion2

spr_explosion2

1000

true

Create an Event : obj_enemy1&obj_bullet

obj_enemy1&obj_my_plane



Tab: main1

Tab: main1

Tab: main1


Tab: move

Tab: score

Create an Event : obj_enemy1-obj_myplane


Tab: main1

Tab: main1

Tab: main1

Place an enemy plane in the room

We start with just one enemy plane and get

more of them over time.

Create one more object

◦ controller_enemy

To control the creation of enemy planes

make the object invisible during the game by unchecking

the box labeled Visible.

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Creation Event

create an enemy place at a random location

just above the room.

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Tab: main1

Set the alarm clock to 200.

In the event for this alarm clock we create another

enemy plane and set the alarm clock again, but this time

to 500.

The effect is that at the beginning of the game there is

one enemy plane. After 200 steps, that is, about seven

seconds, a second enemy plane appears. After about 15

seconds, a third plane appears, etc.

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Tab: main2


Tab: main1


Tab: 2

Place one instance of the controller object in

the room

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실행결과


실습작업 파일(11월 16일)

Scrolling Shooter Tutorial Directory

◦ Examples -> 1945-2.gmk

◦ Resources-> *.bmp, *.png, *.gif, *.ico, *.mid, *.wav

◦ GM Tutorial- Scrolling Shooter.pdf

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92

[3]SCORE, LIVES, DAMAGE



Agenda

Make a new object called the controller_life.

◦ It does not need a sprite as we will control the

drawing itself using the drawing event.

◦ To show the score, the damage (in the black area

at the left), and the number of planes left, that is

the number of lives.

Check for the health and lives

◦ Make some changes in the collision event of the

enemy plane and the main plane.

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controller_life object: Create Object


controller-life

controller_life object: Create Events


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Tab: score

0 3 100 don’t show

No more Lives Events


Tab: score

Tab: main2

back_water

No more Health Events



Tab: score

Tab: main1

Tab: main1

100 snd_explosion2

obj_explosion2

not

obj_myplane

Sprite Addition: spr_bottom


Sprite Addition: spr_bottom


bottom.png

spr_bottom

Sprite Addition: spr_life


Sprite Addition: spr_life


spr_life

life.png

Draw Events Addition :controller_life


Draw Events Addition :controller_life


Tab: draw

Tab: draw

Tab: score

spr_bottom

0

404

-1

180

440


Tab: score

Tab: score

x1:12

y1:449

x2:138

y2:459back color: none

bar color:green to red

16

410

spr_life

Controller_enemy Object Addition


Controller_enemy Object


Tab: main1 tab

obj_enemy1

random(room_width)

-100

Conroller_life in Room


실행 결과


[4] MORE ENEMIES- 파일명: 1945_4.GMK


Agenda

To add three new types of enemy planes to

our game.

◦ One will fire bullets straight down.

◦ The second plane will fire bullets towards the main

plane.

◦ The third type will not fire bullets but comes from

the bottom of the room and is more difficult to

avoid or shoot.

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114

실습작업 파일(11월 23일)

Scrolling Shooter Tutorial Directory

◦ Examples -> 1945-3.gmk

◦ Resources-> *.bmp, *.png, *.gif, *.ico, *.mid, *.wav

◦ GM Tutorial- Scrolling Shooter.pdf

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115

Create a Sprite enemy planes:spr_enemy2


spr_enemy2

enemy2_strip3.png

Create a Sprite enemy planes: spr_enemy3


spr_enemy3

enemy3_strip3.png

Create a Sprite enemy planes: spr_enemy4


spr_enemy4

enemy4_strip3.png

Create a Sprite enemy bullet:

spr_enemybullet1


enemybullet1.png

spr_enemybullet1

Create a Sprite enemy bullet:

spr_enemybullet2


enemybullet2.png

spr_enemybullet2

Create sound : snd_explosion3


snd_explosion1.wav

snd_explosion3

Create enemybullet object

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spr_enemybullet 1

obj_enemybullet 1


8

Move tab


y

room_height+16

lager than

Control tab - variables

main1 tab - object


Create Object Obj_enemybullet2





Create Object : obj_enemy2


obj_enemy2

spr_enemy2

Create Event : obj_enemy2



4

Tab: move

Create Event: step



random(room_width)

-16

y

room_height+32

larger than

Tab: control

Tab: move


Tab: control

Tab: main1

obj_enemybullet1

0

1630

Create Event: collision with obj_myplane



Tab: main1

Tab: main1

snd_explosion1

false

obj_explosion1

0

0


Tab: move

Tab: score

random(room_width)

-16 -30

Create Event: collision with obj_bullet



Tab: main1

Tab: main1

Tab: main1

snd_explosion1

false

obj_explosion1

0

0


5->10random(room_width)

-16 10





30->80

obj_enemybullet1

-> obj_enemybullet2



10->20






10->40

Change Object : obj_enemy1


4




10->5

8

Create Object Event enemy bullet:

obj_enemybullet1


Tab: move

8

Step Event of obj_enemybullet1


Tab: control

Tab: main

y

room_height+16

larger than


Tab: main1

Tab: main1

Tab: score

snd_explosion3

false

-5

Create Object Event enemy bullet:

obj_enemybullet2



Tab: control

Tab: move

Tab: move

obj_myplane.x: the value of the x

coordinate of the plane

Tab: control

obj_myplane

0

larger than

obj_myplane.x

obj_myplane.y

8

8


Tab: main1

Tab: main1

Tab: score

snd_explosion3

false

-5


Tab: main1

obj_explosion2 : addition


Tab: main1

Tab: score

obj_myplane

0

0-1

controller_enemy: addition


Tab: main2

1000

Alam12000

Alam2

3000

Alam3


obj_enemy2

random(room_width)

-16

500

Alam1


obj_enemy3

random(room_width)

-16

1000

Alam2


obj_enemy4

random(room_width)

room_height+16

300

Alam3

[5]FINISHING THE GAME -파일명: 1945_5.GMK


Agenda

To turn it into a real game a couple of finishing

touches

◦ Some background music, a loading image, a better

icon, etc.

◦ A delay in planes to reappear when shot, making it

more interesting for the player to try and shoot

planes, rather than simply avoid them.

◦ A special fire bonus

when the player reaches a score of 400

and another one when he reaches 1000 points.

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Create a background: back_score


Background: back_score


score.png

Font: Score_font


Create Sound: snd_background


Addition of obj_myplane



score

400

Larger than

obj_bullet

-24

-8


score

1000

Larger than

obj_bullet

24

-8


obj_bullet

0

-16

obj_bullet

0

-48

Change obj_enemybullet1


snd_explosion3

false -5


Change obj_enemybullet2



obj_myplane

0

Larger than

obj_myplane.x

obj_myplane.y

8


snd_explosion3

false -5


Change controller_enemy



obj_enemy1

random(room_width)

-16

obj_enemy1

8

Smaller than500

Alam 0


obj_enemy2

random(room_width)

-16

obj_enemy2

5

Smaller than

500

Alam 1


obj_enemy3

random(room_width)

-16

obj_enemy3

3

smaller than

1000

Alam 2


obj_enemy4

random(room_width)

room_height+16

500

Alam 3


controller_lifecontroller_enemy


Check at Global Game Settings


실행 결과


[6] USING TIME LINES-파일명: 1945_6.GMK


Create Time lines : (Advanced Mode)


tl_enemies

Time line: tl_enemies


Time line : step 0



Time line : step 100





Step 200





100 – 150 – 200 – 250 – 300

- 350 – 400 – 450 – 500



Step 400


100 – 150 – 200 – 250 – 300

- 350 – 400 – 450 – 500

Time line : step 500/530



100 – 150 – 200 – 250 – 300

- 350 – 400 – 450 – 500



Step 600


Step 1000


Controller enemy 부분 수정


[7] A ROOM WITH A VIEW:- -파일명: 1945_7.GMK






Rooms : rm_main




Delete Events of obj_island1, 2 3



Change Actions of controller_life


기말고사 Report

제출일: 12월 3일 금요일 수업시간에 발표

팀 구성 : 1인 이상 4인 이하

주제: 자유

제출물: 제작 *.gmk파일과 PT 자료

제출 방법◦ 수업시간에 팀별 발표(PT 준비)

제작의도, 제작방법 및 내용, 자체평가

◦ 학생 상호간 평가 이해도, 완성도, 성실성, 창의성, 발표력

기말고사 총점의 50% 반영

2011-09-09


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Documents

Game Maker Tutorial 2. A SCROLLING SHOOTER 1945prof.ysu.ac.kr/down.asp?file=game maker(2)-scrolling... · Game Maker Tutorial 2. A SCROLLING SHOOTER 1945 영산대학교2011년도2학기게임제작개론