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path: root/src/Xanthous/Entities
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2020-01-03 Track entity collision in the Entity classGriffin Smith5-6/+11
Rather than having a single function in the Game.Lenses module for determining what collision type if any an entity has, track it in the Entity typeclass itself. This is both more extensible and a better separation of concerns and gets rid of one of the two needs for a circular import. Yay! As part of this, I realized nothing was being done to prevent doors from being placed on tiles that already had walls (since now that was properly causing a collision!) so I've fixed that as well.
2020-01-03 Decouple Gormlak AI from creaturesGriffin Smith5-43/+96
Decouple the definition of the Gormlak AI from the creature type itself using generic lenses and a "HasVisionRadius" typeclass, to begin to untangle the hs-boot web of circular dependencies. This actually *increases* the number of hs-boot files from 1 to 2, but both of the source imports that use them are single-instance (unlike gormlak AI which I would expect to grow linearly with the growth of the game), plus at least one should be able to go away once we remove collision from the game lenses module and move it into something defined in the entity class itself.
2020-01-03 Describe doors as either closed or openGriffin Smith1-1/+2
Rather than just describing them as "a door". Descriptions should ideally be as injective as possible!
2019-12-30 Use more evocative characters for closed doorsGriffin Smith1-6/+8
2019-12-30 Place doors on the levelGriffin Smith1-0/+8
Pick a random subset of cells on the level that have a wall on two opposite sides and are clear on the other two sides, and place closed, unlocked doors on those cells.
2019-12-23 Add a drop commandGriffin Smith1-0/+7
Add a drop command, bound to 'd', which prompts the character for an item in their inventory, removes it from the inventory, and places it on the ground. Along the way I had to fix a bug in the `EntityMap.atPosition` lens, which was always appending to the existing entities at the position on set, without removing the entities that were already there - the rabbit hole of quickchecking the lens laws here also lead to replacing the target of this lens with a newtype called `VectorBag`, which ignores order (since the entitymap makes no guarantees about order of entities at a given position).
2019-12-23 Use wielded items to calculate damageGriffin Smith1-24/+33
Use whatever items the character has wielded, if any, to calculate the damage they deal when attacking. Currently this shortcuts handedness to just use the *first* item they have equipped, which is fine since it's currently only possible to equip something in the right hand.
2019-12-22 Add a wield commandGriffin Smith1-0/+8
Add a Wield command, which prompts for a wieldable item, if any, to take out of the character's inventory and put in their right hand. Eventually we should support other hands, but for now hardcoding the right hand should be fine.
2019-12-22 Add wielded, wieldable itemsGriffin Smith4-23/+218
Split the character's inventory up into wielded items (in one or both hands) and the backpack, and display wielded items when drawing the inventory panel. Currently there's no way to actually *wield* items though, so this is all unused/untested. Also, add the ability for items to be "wieldable", which gives specific descriptions for when attacking with them and also modified damage.
2019-11-30 Add messages on the groundGriffin Smith2-7/+32
Add support for a "GroundMessage" entity type, support for a Read command to read them, and randomly place an initial, tone-setting tutorial message on the ground near the character at the beginning of the game.
2019-11-30 Fix an injectivity issue with saving the gameGriffin Smith4-8/+8
Fix an injectivity issue with JSON-encoding the entity map that was causing the game saving to not properly round-trip. As part of this, there's a refactor to the internals of the entity map to use sets instead of vectors, which should also get us a nice perf boost.
2019-11-29 Use menus for combat and picking up itemsGriffin Smith7-22/+12
Refactor a bunch of stuff around to allow for polymorphically surfacing an EntityChar for all entities, and use this to write a generic `entityMenu` function, which generates a menu from the chars of a list of entities - and use that to fully implement (removing `undefined`) menus for both attacking and picking things up when there are multiple entities on the relevant tile.
2019-11-29 Implement a "look" commandGriffin Smith1-1/+2
Implement the PointOnMap prompt type, which allows the player to move the cursor around and select a position on the map, and use this prompt type to implement a "look" command, describing all entities at the selected position.
2019-11-29 Implement saving+loading the gameGriffin Smith5-29/+69
Implement ToJSON and FromJSON for all of the various pieces of the game state, and add a pair of functions saveGame/loadGame implementing a prism to save the game as zlib-compressed JSON. To test this, there's now Arbitrary, CoArbitrary, and Function instances for all the parts of the game state - to get around circular imports with the concrete entities this unfortunately is happening via orphan instances, plus an hs-boot file to break a circular import that was just a little too hard to remove by moving things around. Ugh.
2019-11-15 Recover character hitpoints over timeGriffin Smith3-14/+27
Wrap hitpoints in a newtype, and recover character hitpoints over time
2019-10-16 Add draw priorityGriffin Smith2-2/+3
Rather than blindly taking one entity from the list when we have multiple entities on the same tile, add a `drawPriority` method to the Draw typeclass which allows individual entities to request to be drawn on top - this avoids the "noodles floating over your head" bug we saw before.
2019-10-13 Implement speed and ticksGriffin Smith4-14/+86
Gormlaks now move 1/8th the speed of the character, which means we can run away from them - yay! Unfortunately this also introduces a bug where they'll eventually get stuck and not do anything, so I'll be tackling that next.
2019-10-06 Fix underflow when damaging characterGriffin Smith1-0/+5
Fix underflow that could happen when multiple gormlaks attack the character in a single turn
2019-10-06 Allow eating edible itemsGriffin Smith3-4/+39
Add menu support to the prompt system, and an "Eat" command that prompts for an item to eat and eats the item the character specifies, restoring an amount of hitpoints configurable via the item raw type.
2019-09-29 Gormlaks attack backGriffin Smith1-0/+10
When gormlaks see the character, they step towards them and attack dealing 1 damage when adjacent. Characters have hitpoints now, displayed at the bottom of the game screen, and when the game is over they die.
2019-09-28 Tweak gormlak movement slightlyGriffin Smith1-1/+1
- Don't let gormlaks run into things like walls or each other - Add a small element of randomness to gormlaks' motion - Increase gormlaks' vision by a large amount
2019-09-28 Implement the start of creature AIGriffin Smith6-7/+38
Add a Brain class, which determines for an entity the set of moves it makes every step of the game, and begin to implement that for gormlaks. The idea here is that every step of the game, a gormlak will move towards the furthest-away wall it can see.
2019-09-21 Implement combatGriffin Smith3-6/+16
Put a bunch of gormlaks randomly on the level, and implement combat via damaging those gormlaks by one point.
2019-09-20 Describe what you see when you walk over itemsGriffin Smith5-12/+20
Every step the character takes, describe the entities at that position excluding the character.
2019-09-20 Add doors and an open commandGriffin Smith4-4/+56
Add a Door entity and an Open command, which necessitated supporting the direction prompt. Currently nothing actually puts doors on the map, which puts a slight damper on actually testing this out.
2019-09-20 Add the beginnings of a prompt systemGriffin Smith1-0/+9
Add the beginnings of a generic prompt system, with exclusive support atm for string prompts, and test it out by asking the character for their name at startup
2019-09-19 Add items and inventoryGriffin Smith7-28/+123
Add a new "Item" entity, which pulls from the previously-existent ItemType raw, and add a "PickUp" command which takes the (currently *only*) item off the ground and puts it into the inventory.
2019-09-15 Scroll the viewport around the characterGriffin Smith1-1/+11
Scroll the viewport so that the character is never less than 5 away from the edge of the screen. This was super easy, thanks Brick!
2019-09-15 Progressively reveal the map to the playerGriffin Smith3-2/+11
As the character walks around the map, progressively reveal the entities on the map to them, using an algorithm based on well known circle-rasterizing and line-rasterizing algorithms to calculate lines of sight that are potentially obscured by walls.
2019-09-09 Convert generated levels to wallsGriffin Smith6-39/+81
Add support for converting generated levels to walls, and merge one into the entity map at the beginning of the game. There's nothing here that guarantees the character ends up *inside* the level though (they almost always don't) so that'll have to be slotted into the level generation process.
2019-09-02 Put a test gormlak on the screenGriffin Smith2-1/+33
Implement a concrete "Creature" entity, and place one on the screen at the game startup for testing. This revealed a bug with drawing when getting the maximum entity position, but that appears to be fixed now (yay)
2019-09-02 Add raws, loaded statically from a folderGriffin Smith3-0/+102
Add raw types with support for both creatures and items, loaded statically from a "raws" folder just like in the Rust version.
2019-08-31 Add entities, and allow walking aroundGriffin Smith2-0/+55
Add support for entities via a port of the EntityMap type, and implement command support starting at basic hjkl.