Game Development with GameMaker: A Primer on Game Development and Design. 2 Ed

Table of Contents....5 About the Author....15 Acknowledgments....16 Introduction....17 Chapter 1: Overview....19 The Right Tool for the Job....20 What Is GameMaker?....21 About Game Design....22 About Coding....23 How to Use This Book....23 Additional Content....27 Pricing....27 Installing GameMaker....28 Windows....29 Mac....32 Installing from Steam....33 Chapter 2: Hello, World!....35 UI Overview....37 Sprites....41 Objects....43 Events....45 Code....47 Tile Sets....48 Fonts....48 Rooms....49 Hello, GML!....50 Create Event....51 Introducing Variables....52 Left Pressed (Mouse) Event....56 Draw....57 Chapter 3: Card Game (Part 1)....62 The Design....62 A Game Design Document Primer....63 Memory GDD....64 Rules....64 Game Flow....65 Similar Games....65 Game Modes....65 Target Audience....67 Target System....67 Assets....67 spr_cardback....68 spr_rain....68 From GDD to Development....69 Cards....69 Implementation....71 The Card Object....71 If-Then-Else....72 Switch....73 Deck....79 Array....80 Stack....82 Queue....83 List....85 Map....85 Priority Queue....86 Grids....87 Designing Decks....88 Code Loops....90 Repeat....90 While....91 Do-Until....91 For....92 Making Decks....93 Every Day I’m Shuffling....96 How Do Functions Function?....96 GML Functions....98 Shuffle Cards Code....99 Chapter 4: Card Game (Part 2)....104 Finite-State Machines (FSMs)....104 From State Machine to Code....110 A Matter of Time....119 Play to Win!....126 Chapter 5: Fixed Shooter....134 History of the Genre....134 Space Gala (GDD)....136 Story and Setting....137 Gameplay....137 Victory Conditions....137 Controls....137 Menu....138 Pacing....138 Enemies....138 Game Modes....139 Level 1....139 Similar Games and Influences....139 Target Audience....139 From GDD to the Game....140 Assets....140 spr_player....140 spr_bullet_player....144 spr_life....144 spr_enemy_red....145 spr_background....145 fnt_score....146 fnt_messages....146 rm_level_1....146 Making Features, Not Objects....147 Movements....148 Shooting....155 Designing rm_level_1....166 Game States....167 Making HUDs....176 What About Victory?....179 Menu....180 Chapter 6: Shoot ‘Em Up!....189 Fixed vs. Scrolling Shoot ‘Em Up!....190 Space Gala v.2.0 (GDD)....191 Story and Setting....191 Gameplay....191 Victory Conditions....192 Controls....193 Menu....193 Pacing....193 Enemies....194 Game Modes....195 Level 1....195 Level 2....195 Similar Games and Influences....195 Target Audience....196 Assets....196 Sounds....199 Cameras and Viewports....202 Designing Color-Switching....213 Inheritance....217 Color Shooting....222 More Enemies....225 Ain’t Nothing but the Blues....226 Walkers on Paths....228 Unidentified Flying…Instance!....232 Super-Attack....235 How to Design a Good Shmup Level....241 Boss Fighting....242 Conclusion....247 Chapter 7: Designing Bosses....250 Teaching and Experimenting....252 Motivation!....253 How Can We Use This?....255 Chapter 8: Single-Screen Platformer....257 Cherry Caves....260 Story and Setting....260 Gameplay....261 Victory Condition....261 Controls....262 Enemies....262 Assets....263 Sprites....263 spr_player_idle....263 spr_player_walk....263 spr_player_climb....264 spr_block_red....264 spr_block_brown....265 spr_ladder....265 spr_ball_purple....265 spr_ball_green....266 spr_cherry....266 spr_goal....266 Fonts....267 fnt_score....267 Sounds....267 How to Create a Hero....267 Setting the Boundaries....271 Everything That Goes Up Comes Down....276 Get a Jump on Gravity!....279 Climbing the Ladder....280 Controlling the Game Flow....286 HUD....296 How to Die....299 Cherry-Picking....302 Through Cherries, to the Star....303 Level Design: The Art of Creating Worlds....306 Designing Caves....307 Level 2!....308 Chapter 9: Scrolling Platformer....314 Story and Setting....315 Gameplay....315 Victory Condition....316 Items....316 Controls....317 Enemies....318 Attack....318 Miscellaneous....319 Similar Games....320 Assets....320 spr_land....320 spr_skybg....321 spr_platform_falling....322 spr_platform_trampoline....322 spr_platform_moving....322 spr_octopus_green....323 spr_octopus_purple....323 spr_titlescreen....324 spr_coin....324 spr_terrain....325 Fonts....325 fnt_title....325 Sounds....325 The More You Do It …....326 Title Screen....327 Tiles and Level Design....336 Scrolling Camera....346 Fixing and Re-adapting....350 Different Ways to Move....358 Gotta Squash'Em All!....367 Items and Power-Ups....374 Coins....374 Cherries....376 Creating the First Level....379 Chapter 10: Designing Platformers....387 Controls Are Key....387 It’s My Fault!....389 Keep It Simple!....391 Power-Ups, Items, and Gear....393 Interesting Collections....393 World Makers....396 Conclusion....400 Chapter 11: Metroidvania (Part 1)....401 History....402 Isolation (Game Design Document)....403 Story and Setting....404 Gameplay....404 Victory Condition....404 Controls....404 Enemies....406 Attack....406 Skills....406 Maps....407 Inventory....407 Similar Games....408 Assets....408 spr_player_idle....408 spr_player_walk....409 spr_player_jump....409 spr_player_jump_fall/spr_player_dash....409 spr_player_wallslide....410 spr_heart....410 spr_warp....411 spr_marker....411 spr_upgrade....412 spr_cure....412 spr_octopus_green....412 spr_ground_brown....413 spr_checkpoint_inactive....413 spr_checkpoint_active....414 spr_bullet_heavy....414 spr_bullet_light....414 Fonts....415 fnt_text....415 fnt_menu_h1....415 fnt_menu_h2....415 Sounds....415 snd_item....415 snd_jump....415 snd_dash....416 snd_shoot....416 snd_kill....416 snd_hit....416 snd_menu....416 Creating the Platforming Base....416 Gamepad Support!....421 Gravity, No Escaping!....424 Making the Leap....426 Another Kick in the Wall....428 Moving Forward with a Dash....435 The Game Flow....442 Warped!....451 Conclusion....456 Chapter 12: Metroidvania (Part 2)....458 About Maps....459 Map Makers, Grids, and Semaphores....460 Items and Inventory....480 Creating the Combat System....496 Old Enemies....501 Saving Maria....507 file_text_open_read(fname)....509 file_text_open_write(fname)....509 file_text_open_append(fname)....509 file_text_write_string(file_id, my_string)....510 file_text_close(file_id)....510 Conclusion....519 Chapter 13: Extra: Artificial Intelligence....522 Isolation: CR – Artificial Intelligence....526 Change Request Document....526 Description of Change....527 Justification....528 Impact Analysis....529 Raycasting-Based Detection....530 Octopus, Behave!....534 Patrol....536 Chase....538 Conclusion....541 Chapter 14: Designing Fun Games....543 Document Your Design!....543 Respect Your Game....544 Keep Your Players Immersed....545 Autonomy....546 Competence....547 Relatedness....548 Having Fun Means Learning....549 Conclusion....551 Chapter 15: What’s Next?....552 Itch.io....552 GOG....556 Humble Store....558 Steam....559 End Game....561