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Physics simulation engine implemented, basic cases (null and 2d SideScroller) works

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This commit is contained in:
Andrew Kesterson
2026-05-26 10:36:31 -04:00
parent d87c5d2c20
commit 314ce5e10d
8 changed files with 271 additions and 26 deletions
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13
src/actor.c
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@@ -117,7 +117,14 @@ akerr_ErrorContext *akgl_actor_logic_changeframe(akgl_Actor *obj, akgl_Sprite *c
akerr_ErrorContext *akgl_actor_logic_movement(akgl_Actor *obj, SDL_Time curtime)
{
PREPARE_ERROR(errctx);
FAIL_ZERO_RETURN(errctx, obj, AKERR_NULLPOINTER, "Null actor reference");
FAIL_ZERO_RETURN(errctx, obj, AKERR_NULLPOINTER, "obj");
FAIL_ZERO_RETURN(errctx, obj, AKERR_NULLPOINTER, "obj->basechar");
if ( obj->vx > obj->basechar->sx ) {
obj->vx = obj->basechar->sx;
}
if ( obj->vy > obj->basechar->sy ) {
obj->vy = obj->basechar->sy;
}
// Effectively a NOOP, this is handled by the physics engine now
// These functions are still present in case the library user wants per-actor behavior
SUCCEED_RETURN(errctx);
@@ -276,6 +283,7 @@ akerr_ErrorContext AKERR_NOIGNORE *akgl_Actor_cmhf_left_off(akgl_Actor *obj, SDL
FAIL_ZERO_RETURN(errctx, obj, AKERR_NULLPOINTER, "NULL actor");
FAIL_ZERO_RETURN(errctx, event, AKERR_NULLPOINTER, "NULL event");
//SDL_Log("event %d (button %d / key %d) stops moving actor left", event->type, event->gbutton.which, event->key.key);
obj->vx = 0;
AKGL_BITMASK_DEL(obj->state, AKGL_ACTOR_STATE_MOVING_LEFT);
//SDL_Log("new target actor state: %b", obj->state);
SUCCEED_RETURN(errctx);
@@ -299,6 +307,7 @@ akerr_ErrorContext AKERR_NOIGNORE *akgl_Actor_cmhf_right_off(akgl_Actor *obj, SD
FAIL_ZERO_RETURN(errctx, obj, AKERR_NULLPOINTER, "NULL actor");
FAIL_ZERO_RETURN(errctx, event, AKERR_NULLPOINTER, "NULL event");
//SDL_Log("event %d (button %d / key %d) stops moving actor right", event->type, event->gbutton.which, event->key.key);
obj->vx = 0;
AKGL_BITMASK_DEL(obj->state, AKGL_ACTOR_STATE_MOVING_RIGHT);
//SDL_Log("new target actor state: %b", obj->state);
SUCCEED_RETURN(errctx);
@@ -322,6 +331,7 @@ akerr_ErrorContext AKERR_NOIGNORE *akgl_Actor_cmhf_up_off(akgl_Actor *obj, SDL_E
FAIL_ZERO_RETURN(errctx, obj, AKERR_NULLPOINTER, "NULL actor");
FAIL_ZERO_RETURN(errctx, event, AKERR_NULLPOINTER, "NULL event");
//SDL_Log("event %d (button %d / key %d) stops moving actor up", event->type, event->gbutton.which, event->key.key);
obj->vy = 0;
AKGL_BITMASK_DEL(obj->state, AKGL_ACTOR_STATE_MOVING_UP);
//SDL_Log("new target actor state: %b", obj->state);
SUCCEED_RETURN(errctx);
@@ -345,6 +355,7 @@ akerr_ErrorContext AKERR_NOIGNORE *akgl_Actor_cmhf_down_off(akgl_Actor *obj, SDL
FAIL_ZERO_RETURN(errctx, obj, AKERR_NULLPOINTER, "NULL actor");
FAIL_ZERO_RETURN(errctx, event, AKERR_NULLPOINTER, "NULL event");
//SDL_Log("event %d (button %d / key %d) stops moving actor down", event->type, event->gbutton.which, event->key.key);
obj->vy = 0;
AKGL_BITMASK_DEL(obj->state, AKGL_ACTOR_STATE_MOVING_DOWN);
//SDL_Log("new target actor state: %b", obj->state);
SUCCEED_RETURN(errctx);