> For the complete documentation index, see [llms.txt](https://gilmour.online/compsci/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gilmour.online/compsci/2d-game-design/game-6-highlights.md). # Game 6 Highlights ## Due to time, we will cover the following: * Platformer Movement (Video 1) * Importing Sprite Sheets (Video 1) * Enemy Movement & Paths (Video 2) * Tile Sets (class and video 3) * Big Room with a follow view (class and video 3) {% embed url="" %} {% embed url="" %} {% embed url="" %} ## Platformer Movement Script ``` // Run This Function in END STEP event /* INSTRUCTIONS: This function requires passing in arguments playerSpeed (not hspeed or speed) and a gravity value. You should also make an optional argument maxFall with a value of 15 In addition, you need to have two variables in the create event of your object: jumpSpeed = 0 canJump = true optional: Jumping variable (needed in create if you are going to have a jumping animation (controlled in step). */ /*********************/ /*Horizontal Movement*/ /*********************/ var move = -keyboard_check(vk_left) + keyboard_check(vk_right); var collision = instance_place(x+playerSpeed, y+vspeed, all); // You are moving right if (move == 1){ if (collision < 0 or !object_get_solid(collision.object_index)){ x += playerSpeed; } // Move to wall, if there is a SOLID wall to your right else{ move_contact_solid(0, playerSpeed); } } // You are moving left else if (move == -1){ collision = instance_place(x-playerSpeed, y+vspeed, all) if ( collision < 0 or !object_get_solid(collision.object_index)){ x -= playerSpeed; } // Move to wall, if there is a solid wall to your left else{ move_contact_solid(180, playerSpeed); } } /*******************/ /*Vertical Movement*/ /*******************/ jumping = false; collision = instance_place(x, y - jumpSpeed, all); // Check to see if you are in the air or are about to jump. if (place_empty(x, y + 1) or jumpSpeed > 0 or (collision > 0 and !object_get_solid(collision.object_index))){ jumping = true; } // if you are jumping... if (jumping){ // Move up or down if there is no collision this frame. if (collision < 0 or !object_get_solid(collision.object_index)){ y -= jumpSpeed; } // Check for a SOLID object below you else if (jumpSpeed < 0 and object_get_solid(collision.object_index)){ move_contact_solid(270, jumpSpeed) jumpSpeed = 0 } // Check for a SOLID object above you else if (jumpSpeed > 0 and object_get_solid(collision.object_index)){ move_contact_solid(90, jumpSpeed) jumpSpeed = -0.1 } jumpSpeed -= grav; if (jumpSpeed < -maxFall){ jumpSpeed = -maxFall; } } // If you are on SOLID ground, allow the player to jump again. if (!place_empty(x, y+1) and instance_place(x, y + 1, all) > 0 and object_get_solid( instance_place(x, y + 1, all).object_index)){ canJump = true; } ``` ## Animation Control ``` var dir = -keyboard_check(vk_left) + keyboard_check(vk_right) //put your sprite names here: var jump_right = sMario_jumpR var walk_right = sMario_right var jump_left = sMario_jumpL var walk_left = sMario_left image_speed = 3 if (dir == 1){ if (jumping){ sprite_index = jump_right; } else { sprite_index = walk_right; } } else if (dir == -1){ if (jumping){ sprite_index = jump_left; } else { sprite_index = walk_left; } } else { if (!jumping and sprite_index = jump_right){ sprite_index = walk_right; } else if (!jumping and sprite_index = jump_left){ sprite_index = walk_left; } else if (jumping and sprite_index = walk_right) { sprite_index = jump_right; } else if (jumping and sprite_index = walk_left) { sprite_index = jump_left; } image_speed = 0; image_index = 0; } ``` ## Enemy Move ``` var collision = instance_place(x+hspeed, y+vspeed, all); var collisionBelowRight = instance_place(x+hspeed+sprite_width, y+1, all) var collisionBelowLeft = instance_place(x+hspeed-sprite_width, y+1, all) if (hspeed > 0){ if (place_empty(x+hspeed+sprite_width, y+1) or (collision >-0 and object_get_solid(collision.object_index)) or (!place_empty(x+hspeed+sprite_width, y+1) and collisionBelowRight > 0 and object_get_solid(collisionBelowRight.object_index) == false )){ hspeed = -hspeed; } } else if (hspeed < 0){ if (place_empty(x+hspeed-sprite_width, y+1) or (collision >-0 and object_get_solid(collision.object_index)) or (!place_empty(x+hspeed-sprite_width, y+1) and collisionBelowLeft > 0 and object_get_solid(collisionBelowLeft.object_index) == false )){ hspeed = -hspeed; } } ``` ## Jump Attack ``` if (y < other.y and jumpSpeed <= 0){ instance_destroy(other) } else { instance_destroy(self) } ``` ## Resources [Mario Sprite Sheet](https://drive.google.com/file/d/1kAJ_KxtlbHOLhRBc9T9NuvlZ2CHGHFph/view?usp=sharing) [Enemy Sprite Sheet](https://drive.google.com/file/d/1fYdrCbiCGiLoGx3Jj7eykiLtc557QEN0/view?usp=sharing)\ \ [Flying Enemy Sprite Sheet](https://drive.google.com/file/d/1vf-sg-SjtsNS-uD01HT89m43nA7L7VUW/view?usp=sharing) [Mario Tileset](https://drive.google.com/file/d/1tEzBMb0P0xj7Osa2XejKGwMOyRnnB9N6/view?usp=sharing) --- # Agent Instructions This documentation is published with GitBook. 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