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Introduce notion of attack spec for battles 

An attack spec will be used to hold the stats of both the attacker and
defender, grouping the data necessary to determine how much damage the
defender takes and other statuses caused by the attack.
This commit is contained in:
Doyle Thai 2016-08-04 00:48:43 +10:00
parent b5db6e0e2b
commit 523fe0f2b1
1 changed files with 39 additions and 5 deletions
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44
src/WorldTraveller.c
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@ -729,6 +729,13 @@ INTERNAL void entityStateSwitch(EventQueue *eventQueue, World *world,
entity->state = newState;
}
typedef struct AttackSpec
{
Entity *attacker;
Entity *defender;
i32 damage;
} AttackSpec;
INTERNAL void beginAttack(EventQueue *eventQueue, World *world,
Entity *attacker)
{
@ -759,14 +766,16 @@ INTERNAL void beginAttack(EventQueue *eventQueue, World *world,
}
}
INTERNAL void endAttack(EventQueue *eventQueue, World *world, Entity *attacker)
// TODO(doyle): MemArena here is temporary until we incorporate AttackSpec to
// battle in general!
INTERNAL void endAttack(MemoryArena *arena, EventQueue *eventQueue,
World *world, Entity *attacker)
{
#ifdef DENGINE_DEBUG
ASSERT(attacker->stats->entityIdToAttack != ENTITY_NULL_ID);
#endif
entityStateSwitch(eventQueue, world, attacker, entitystate_battle);
registerEvent(eventQueue, eventtype_end_attack, attacker);
switch (attacker->stats->queuedAttack)
{
case entityattack_tackle:
@ -821,6 +830,13 @@ INTERNAL void endAttack(EventQueue *eventQueue, World *world, Entity *attacker)
if (!noMoreValidTargets)
{
i32 damage = 50;
AttackSpec *attackSpec = PLATFORM_MEM_ALLOC(arena, 1, AttackSpec);
attackSpec->attacker = attacker;
attackSpec->defender = defender;
attackSpec->damage = damage;
registerEvent(eventQueue, eventtype_end_attack, attackSpec);
// TODO(doyle): Use attacker stats in battle equations
if (attacker->type == entitytype_hero)
{
@ -1000,7 +1016,7 @@ void worldTraveller_gameUpdateAndRender(GameState *state, f32 dt)
if (stats->busyDuration <= 0)
{
/* Apply attack damage */
endAttack(&eventQueue, world, entity);
endAttack(&state->arena, &eventQueue, world, entity);
}
}
}
@ -1035,10 +1051,28 @@ void worldTraveller_gameUpdateAndRender(GameState *state, f32 dt)
{
if (!event.data) continue;
Entity *entity = (CAST(Entity *) event.data);
AttackSpec *attackSpec = (CAST(AttackSpec *)event.data);
Entity *attacker = attackSpec->attacker;
Entity *defender = attackSpec->defender;
audio_playVorbis(
arena, audioManager, entity->audioRenderer,
arena, audioManager, attacker->audioRenderer,
asset_getVorbis(assetManager, audiolist_tackle), 1);
char damageStr[12];
common_itoa(attackSpec->damage, damageStr,
ARRAY_COUNT(damageStr));
// TODO(doyle): Incorporate UI into entity list or it's own list
// with a rendering lifetime value
renderer_string(renderer, &state->arena,
cameraBounds, font,
damageStr, defender->pos, V2(0, 0),
0, V4(1, 1, 1, 1));
PLATFORM_MEM_FREE(&state->arena, attackSpec,
sizeof(AttackSpec));
break;
}
// NOTE(doyle): We delete dead entities at the end of the update