sm64ex-coop/docs/lua/examples/behavior-replace-goomba.lua

96 lines
2.8 KiB
Lua

-- name: Custom Goomba
-- description: A terrible goomba replacement to be used as an example.
-- define goomba's custom fields
define_custom_obj_fields({
oCustomGoombaScale = 'f32',
oCustomGoombaTargetYaw = 'f32',
oCustomGoombaRelativeSpeed = 'f32',
})
function bhv_custom_goomba_init(obj)
-- set flags
obj.oFlags = (OBJ_FLAG_COMPUTE_ANGLE_TO_MARIO | OBJ_FLAG_COMPUTE_DIST_TO_MARIO | OBJ_FLAG_SET_FACE_YAW_TO_MOVE_YAW | OBJ_FLAG_UPDATE_GFX_POS_AND_ANGLE)
-- drop to floor
local x = obj.oPosX
local y = obj.oPosY
local z = obj.oPosZ
local floor = find_floor_height(x, y + 200.0, z)
obj.oPosY = floor
obj.oMoveFlags = obj.oMoveFlags | OBJ_MOVE_ON_GROUND
-- animations
obj.oAnimations = gObjectAnimations.goomba_seg8_anims_0801DA4C
-- home
obj.oHomeX = obj.oPosX
obj.oHomeY = obj.oPosY
obj.oHomeZ = obj.oPosZ
-- physics
obj.oWallHitboxRadius = 40.0
obj.oGravity = -4.0
obj.oBounciness = -0.5
obj.oDragStrength = 10.0
obj.oFriction = 10.0
obj.oBuoyancy = 0.0
-- normal init
obj.oCustomGoombaScale = 1.5
obj.oDeathSound = SOUND_OBJ_ENEMY_DEATH_HIGH
-- hitbox
obj.oInteractType = INTERACT_BOUNCE_TOP
obj.oHealth = 0
obj.oNumLootCoins = 1
obj.oIntangibleTimer = 0
obj.hitboxRadius = obj.header.gfx.scale.x * 72
obj.hitboxHeight = obj.header.gfx.scale.y * 50
obj.hurtboxRadius = obj.header.gfx.scale.x * 42
obj.hurtboxHeight = obj.header.gfx.scale.y * 40
obj.hitboxDownOffset = obj.header.gfx.scale.y * 0
-- other flags
obj.oDrawingDistance = 4000
obj.oDamageOrCoinValue = 1
obj.oGravity = -8.0 / 3.0 * obj.oCustomGoombaScale
-- start synchronizing object
network_init_object(obj, true, {
'oCustomGoombaScale',
'oCustomGoombaTargetYaw',
'oCustomGoombaRelativeSpeed',
})
end
function bhv_custom_goomba_loop(obj)
-- find player
local player = nearest_player_to_object(obj)
local distanceToPlayer = dist_between_objects(obj, player)
local angleToPlayer = obj_angle_to_object(obj, player)
-- animate
cur_obj_init_animation_with_accel_and_sound(0, 5.0)
-- update floor/walls and rotation
cur_obj_update_floor_and_walls()
obj.oCustomGoombaTargetYaw = angleToPlayer
cur_obj_rotate_yaw_toward(obj.oCustomGoombaTargetYaw, 0x200)
-- set velocity
obj.oCustomGoombaRelativeSpeed = 80.0
obj_forward_vel_approach(obj.oCustomGoombaRelativeSpeed * obj.oCustomGoombaScale, 0.4)
-- perform physics
cur_obj_move_standard(-78)
-- if goomba interacts, kill it
if (obj.oInteractStatus & INT_STATUS_INTERACTED) ~= 0 then
obj_mark_for_deletion(obj)
end
end
-- hook the behavior
id_bhvCustomGoomba = hook_behavior(id_bhvGoomba, OBJ_LIST_PUSHABLE, true, bhv_custom_goomba_init, bhv_custom_goomba_loop)