Engine02 Game Creation

Levels
Asside from the Player Characters that enter them, the Game Objects that populate them, and the colors they're drawn with, "Levels" are made up of the following elements:

Tiles

Tiles are 8x8 graphics that are placed onto a grid and used to build larger level images for Tile Planes and Tiled Path Objects. They may be drawn and/or modified individually within the Tile Editor, or imported en-masse from an image file by using the Level Ripper to break the image into Tiles and reassemble them into a corresponding Tile Plane.

Each Tile is accompanied by a solidity map, which declares which pixels within the image should be regarded as "solid". There are four solidity settings that can be applied to each pixel within a Tile-

0
"Blank" - These allow all Players and Objects to pass through in all directions

1
"Solid On Top" - Players and Objects set for collision with a "Path" may pass through in all directions except for "downward" (relative to the current Path Mode)

2
"All Solid" - Players and Objects set for collision with a "Path" may not pass through in any direction

3
"Misc All Solid" - The same as "All Solid", meant to identify special terrain that can be tested for by using the _???=TileInfo(???) Script Commands

Each Tile also has an "Angle" setting, and a "Floor" setting, both of which have a range of 0-255. If a Player is flagged for "vector movement", the "Angle" setting will affect his component velocities based on his current Path Mode, and the player may also be flagged such that this setting can cause him to change Path Modes. In this case, proper setting of this value in relation to the terrain is necessary for fluid movement. The values correspond to points over a full 360 degree circle in this manner-
127 __ / \ 63 | | 191 \__/ 0

0 - 63 - Bottom-left quarter-circle, starting from the bottom and going upward to the left

64 - 127 - Top-Left quarter-circle, starting from the left and going upward to the right

128 - 191 - Top-Right quarter-circle, starting from the top and going downward to the right

192 - 255 - Bottom-right quarter-circle, starting from the right and going downward to the left

The Player's Player_Path_Angle variable is automatically set to the "Angle" value at the end of his Hard-coded Movement, and when/if an automatic Path Mode change occurs. If the player is not flagged for "vector movement" or automatic Path Mode change, the "Angle" setting takes on a similar function as the "Floor" setting, which may be set to any value to apply any Game-specific property to the terrain. Both values may be retrieved by scripts using the _???=TileInfo(???) commands, allowing Players and Objects to react differently to different types of terrain.

Tiles can be made up of multiple "Frames", alternate graphics that can be displayed in sequence to create Animation. Tile Animation can be set up and manipulated through the Tile Editor, and involves adding the necessary frames to the Tile by increasing the Frame total and drawing or pasting the new graphics, and setting up a list of "Pause Values" that declare the number of Game Frames to wait before increasing the Tile's current Frame ID. The Frame counter runs separately from the Pause counter, meaning that different animation timing effects can be achieved by having a unequal numbers of Frames and Pauses.

Tile 0 is treated as a completely transparent Tile. When used in building a level, E02 will not attempt to draw this tile at all, regardless of any art that may be stored at this position.

Tiles and their accompanying "Level Palette" are saved to and loaded from ".til" files. This file also contains any "Stamps" that were created for the Tileset for use in the Level Editor.
Tile Planes

0	"Blank"	-	These allow all Players and Objects to pass through in all directions
1	"Solid On Top"	-	Players and Objects set for collision with a "Path" may pass through in all directions except for "downward" (relative to the current Path Mode)
2	"All Solid"	-	Players and Objects set for collision with a "Path" may not pass through in any direction
3	"Misc All Solid"	-	The same as "All Solid", meant to identify special terrain that can be tested for by using the _???=TileInfo(???) Script Commands

0	-	63	-	Bottom-left quarter-circle, starting from the bottom and going upward to the left
64	-	127	-	Top-Left quarter-circle, starting from the left and going upward to the right
128	-	191	-	Top-Right quarter-circle, starting from the top and going downward to the right
192	-	255	-	Bottom-right quarter-circle, starting from the right and going downward to the left