doodle/pkg/uix/actor_events.go

package uix

import "git.kirsle.net/go/render"

// CollideEvent holds data sent to an actor's Collide handler.
type CollideEvent struct {
	Actor    *Actor
	Overlap  render.Rect
	InHitbox bool // If the two elected hitboxes are overlapping
	Settled  bool // Movement phase finished, actor script can fire actions
}
Improve OnCollide Doodad Script Handling * Events.OnCollide now receives a CollideEvent object, which makes available the .Actor who collided and the .Overlap rect which is zero-relative to the target actor. Doodad scripts can use the .Overlap to see WHERE in their own box the other actor has intruded. * Update the LockedDoor and ElectricDoor doodads to detect when the player has entered their inner rect (since their doors are narrower than their doodad size) * Update the Button doodads to only press in when the player actually touches them (because their sizes are shorter than their doodad height) * Update the Trapdoor to only trigger its animation when the board along its top has been touched, not when the empty space below was touched from the bottom. * Events.OnLeave now implemented and fires when an actor who was previously intersecting your doodad has left. * The engine detects when an event JS callback returns false. Eventually, the OnCollide can return false to signify the collision is not accepted and the actor should be bumped away as if they hit solid geometry. 2019-05-07 05:57:32 +00:00			`package uix`

Cut lib/render into its own package, change all imports 2019-12-23 02:21:58 +00:00			`import "git.kirsle.net/go/render"`
Improve OnCollide Doodad Script Handling * Events.OnCollide now receives a CollideEvent object, which makes available the .Actor who collided and the .Overlap rect which is zero-relative to the target actor. Doodad scripts can use the .Overlap to see WHERE in their own box the other actor has intruded. * Update the LockedDoor and ElectricDoor doodads to detect when the player has entered their inner rect (since their doors are narrower than their doodad size) * Update the Button doodads to only press in when the player actually touches them (because their sizes are shorter than their doodad height) * Update the Trapdoor to only trigger its animation when the board along its top has been touched, not when the empty space below was touched from the bottom. * Events.OnLeave now implemented and fires when an actor who was previously intersecting your doodad has left. * The engine detects when an event JS callback returns false. Eventually, the OnCollide can return false to signify the collision is not accepted and the actor should be bumped away as if they hit solid geometry. 2019-05-07 05:57:32 +00:00
			`// CollideEvent holds data sent to an actor's Collide handler.`
			`type CollideEvent struct {`
Return False: Solid Collision Between Actors * Implement the handler code for `return false` when actors are colliding with each other and wish to act like solid walls. * The locked doors will `return false` when they're closed and the colliding actor does not have the matching key. * Add arbitrary key/value storage to Actors. The colored keys will set an actor value "key:%TITLE%" on the one who touched the key before destroying itself. The colored doors check that key when touched to decide whether to open. * The trapdoor now only opens if you're touching it from the top (your overlap box Y value is 0), but if you touch it from below and the door is closed, it acts like a solid object. 2019-05-29 04:43:30 +00:00			`Actor *Actor`
			`Overlap render.Rect`
			`InHitbox bool // If the two elected hitboxes are overlapping`
Improve Collision Detection: More Active w/ Actors * Improve the collision detection algorithm so that Actor OnCollide scripts get called more often WHILE an actor is moving, to prevent a fast-moving actor from zipping right through the "solid" hitbox and not giving the subject actor time to protest the movement. * It's implemented by adding a `Settled` boolean to the OnCollide event object. When the game is testing out movement, Settled=false to give the actor a chance to say "I'm solid!" and have the moving party be stopped early. * After all this is done, for any pair of actors still with overlapping hitboxes, OnCollide is called one last time with Settled=true. This is when the actor should run its actions (like publishing messages to other actors, changing state as in a trapdoor, etc.) * The new collision detection algorithm works as follows: * Stage 1 is the same as before, all mobile actors are moved and tested against level geometry. They record their Original and New position during this phase. * Stage 2 is where we re-run that movement but ping actors being intersected each step of the way. We trace the steps between Original and New position, test OnCollide handler, and if it returns false we move the mobile actor to the Last Good Position along the trace. * Stage 3 we run the final OnCollide(Settled=true) to let actors run actions they wanted to for their collide handler, WITHOUT spamming those actions during Stage 2. * This should now allow for tweaking of gravity speed and player speed without breaking all actor collision checking. 2019-07-17 04:07:38 +00:00			`Settled bool // Movement phase finished, actor script can fire actions`
Improve OnCollide Doodad Script Handling * Events.OnCollide now receives a CollideEvent object, which makes available the .Actor who collided and the .Overlap rect which is zero-relative to the target actor. Doodad scripts can use the .Overlap to see WHERE in their own box the other actor has intruded. * Update the LockedDoor and ElectricDoor doodads to detect when the player has entered their inner rect (since their doors are narrower than their doodad size) * Update the Button doodads to only press in when the player actually touches them (because their sizes are shorter than their doodad height) * Update the Trapdoor to only trigger its animation when the board along its top has been touched, not when the empty space below was touched from the bottom. * Events.OnLeave now implemented and fires when an actor who was previously intersecting your doodad has left. * The engine detects when an event JS callback returns false. Eventually, the OnCollide can return false to signify the collision is not accepted and the actor should be bumped away as if they hit solid geometry. 2019-05-07 05:57:32 +00:00			`}`