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Practice06 More GML

Practice06 More GML. Enemy Aircraft. Sprite: sprEnemy1 Mig41.gif Rotate the image in sprite editor (180 degree) Object: objEnemy1. EnemyController. sprEnemyController: Trigger.gif objEnemyController Make it “invisible” Place it somewhere in the Room1. Some Scripts. Enemy1Init

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Practice06 More GML

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  1. Practice06More GML

  2. Enemy Aircraft • Sprite: sprEnemy1 • Mig41.gif • Rotate the image in sprite editor (180 degree) • Object: objEnemy1

  3. EnemyController • sprEnemyController: Trigger.gif • objEnemyController • Make it “invisible” • Place it somewhere in the Room1

  4. Some Scripts • Enemy1Init • Vspeed = 10; • EnemyDisappear • Instance_destroy(); • EnemyControllerInit • alarm[0] = 30; • CreateEnemy1 • Instance_create(50, 0, objEnemy1); • alarm[0] = 30;

  5. Call Scripts • objEnemy1 • [EVENT] CREATE • [ACTION] Execute a script “Enemy1Init” • [EVENT] Outside Room • “EnemyDisappar” script • objEnemyController • [EVENT] Create • “EnemyControllerInit” • [EVENT] Alarm 0 • “CreateEnemy1” • Save the game and run it !

  6. Randomizing • In “CreateEnemy1” script instance_create(floor(random(screen_width)), 0, objEnemy1); screen_width 가 640이라면, random(screen_width)는 0 ~ 639.999999 사이의 값을 발생. floor는 소수점 이하 파트를 제거. alarm[0] = floor(random(51)) + 10; // 10 ~ 60 frames random • In “Enemy1Init” vspeed = random(8) + 2; // 2 ~ 9.99999 speed randomly • Save and Test it !

  7. Make them Collide • New script “PlayerEnemy1Collision” with (other) instance_destroy();myEnergy -= 30;if (myEnergy <= 0) then{    instance_destroy();} • Script “PlayerInit” myEnergy = 100; • objPlayer: • CREATE -> Call PlayerInit • Collision with objEnemy1 -> Call PlayerEnemy1Collision

  8. Shootout - 1 • New Script “BulletEnemyCollision” with (other){    // Lower enemy energy    myEnergy -= 50;    // Check if enemy energy is 0 or less    if (myEnergy <= 0)    {        // If so, destroy enemy.        instance_destroy();    }}// Destroy this bulletinstance_destroy(); • objBullet: Collision with Enemy1  Call the script

  9. Shootout - 2 • In Script “Enemy1Init” myEnergy = 100;

  10. Explosion • sprExplosion • Explosion.gif • 17 frame animation • objExplosion • [EVENT] Animation end (in “Other” group) • code: instance_destroy(); • objEnemy1 • [EVENT] DESTROY • [ACTION] Execute a piece of code instance_create(x, y, objExplosion); • objPlayer • [EVENT] DESTROY • similar to objEnemy1

  11. Centered Sprites - 1 • sprPlayer • change origin: (26, 39) • sprBullet • change origin: (8, 8) • sprExplosion • change origin: (35, 50) • sprEnemy1 • change origin: (32, 32)

  12. Centered Sprites - 2 • objPlayer • <space> key event • instance_create(x, y - 25, objBullet);

  13. Player Speed Control • New script “GameStart” global.playerMaxSpeed = 8; • objPlayer • CREATE event: call “GameStart” • <left> key: x -= global.playerMaxSpeed; • <right> key: x += global.playerMaxSpeed; • <up> key: y -= global.playerMaxSpeed; • <down> key: y += global.playerMaxSpeed;

  14. Energy Control • GameStart script global.playerMaxSpeed = 8;global.playerMaxEnergy = 100;global.enemy1MaxEnergy = 100;global.enemy1Damage = 30;global.bulletToEnemy1Damage = 50; • PlayerInit script: myEnergy = global.playerMaxEnergy; • Enemy1Init: myEnergy = global.enemy1MaxEnergy; • PlayerEnemy1Collision: myEnergy -= global.enemy1Damage; • BulletEnemyCollision myEnergy -= global.bulletToEnemy1Damage;

  15. Player Controller • sprPlayerController • SatelliteDish.gif • objPlayerController • Leave it visible !! (DRAW event should arise!) • [EVENT] Create : execute “GameStart” • New Script “CreatePlayer” myPlayer = instance_create(screen_width / 2, 400, objPlayer); • objPlayerController • [EVENT] Create: execute “CreatePlayer” • Remove objPlayer instance from the room • Place objPlayerController somewhere in the room • Try to run it !!

  16. Energy Bar - 1 DrawEnergyBar script pen_color = make_color(150, 150, 150);brush_color = make_color(150, 150, 150);x1 = 5;y1 = screen_height - 15;x2 = 110;y2 = screen_height - 5;draw_rectangle(x1, y1, x2, y2); if (instance_exists(myPlayer)){    pen_color = make_color(0, 0, 255);    brush_color = make_color(0, 0, 255);    x1 = 7;    y1 = screen_height - 13;    x2 = 7 + myPlayer.myEnergy;    y2 = screen_height - 7;    draw_rectangle(x1, y1, x2, y2);}

  17. Energy Bar - 2 • objPlayerController • DRAWING event • execute “DrawEnergyBar” script

  18. Galaxy Background • Background: bgrStars1 • Edit background button • Transform > Resize canvas: 200, 200 • Fill black for entire image • Select white color  Pencil  a few stars randomly (3 stars) • Room • backgrounds tab  background 0 • select background image “bgrStars1” • check “Visible when room stars”, “Tile Hor”, “Tile Vert” • uncheck “Draw background color” • Vert.speed = 3  make the stars to move

  19. Parallax • New background: bgStars2 • 200 x 200 • black background • 5 stars with some “gray” color • Make it “transparent” • In the Room • Background1  bgStars2 • Vert.speed = 2 • Try to run it !! • Try to add one more layer: bgStars3 • more darker stars • more slow speed than layer 1 and 2.

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