npc-752.lua

local npcManager = require("npcManager")
local basicEnemy = {}
local npcID = NPC_ID
local settings = {
    id = npcID,
    gfxwidth = 32,
    gfxheight = 48,
    height = 48,
    nogravity = -1,
    framestyle = 1,
    frames = 2,
    nohurt = true,
    score = 2
}
npcManager.setNpcSettings(settings)
npcManager.registerHarmTypes(npcID,
{
    HARM_TYPE_JUMP,
    HARM_TYPE_SPINJUMP,
    HARM_TYPE_LAVA
},
{
    [HARM_TYPE_JUMP] = 10,
    [HARM_TYPE_SPINJUMP] = 10,
    [HARM_TYPE_LAVA] = 10 
}
)

local STATE_WANDER = 0
local STATE_COLLIDED = 1

local DEACCEL_RATE = 0.065
local BASE_SPEED = 3
local YCHANGE_MINTIME = 60
local YCHANGE_MAXTIME = 90

function basicEnemy.onTickEndNPC(v)
    local data = v.data
    local config = NPC.config[v.id]

    if not data.state then
        data.killeridx = -1 -- which player ended up killing this npc?
        data.state = STATE_WANDER
        data.direction = v.direction
        data.speedYTimer = -1
        data.speedYThreshold = RNG.randomInt(YCHANGE_MINTIME, YCHANGE_MAXTIME)
        v.speedX = data.direction * BASE_SPEED
    end

    if data.state == STATE_COLLIDED then
        v.animationTimer = v.animationTimer + 1
        if v.direction > data.direction then --was facing left, pushed right
            v.animationFrame = v.animationFrame % config.frames
            if v.animationTimer <= 1 then
                v.animationFrame = (v.animationFrame + 1) % config.frames
            end
            --Text.print("haha", 100, 100)
        elseif v.direction < data.direction then --was facing right, pushed left
            v.animationFrame = v.animationFrame % config.frames + config.frames
            if v.animationTimer <= 1 then
                v.animationFrame = (v.animationFrame + 1) % config.frames + config.frames
            end
        end
        local e = Effect.spawn(74,0,0)
        e.x = v.x+(v.width/2)+(e.width/2)-v.speedX+RNG.random(-v.width/10,v.width/10)
        e.y = v.y+v.height-e.height
        v.speedX = v.speedX - (math.sign(v.speedX)*DEACCEL_RATE)
        if math.abs(v.speedX) <= 0.3 then
            data.state = STATE_WANDER
            v.direction = RNG.random() < 0.5 and 1 or -1
            data.direction = v.direction
            v.speedX = v.direction * BASE_SPEED
            data.speedYTimer = 0
        end
    elseif data.state == STATE_WANDER then
        data.speedYTimer = data.speedYTimer + 1
        if data.speedYTimer >= data.speedYThreshold then
            data.speedYTimer = 0
            data.speedYThreshold = RNG.randomInt(YCHANGE_MINTIME, YCHANGE_MAXTIME)
            v.speedY = RNG.randomInt(-1, 2)
            if v.collidesBlockUp then
                v.speedY = 1
            end
            if math.abs(v.speedY) > 1 then
                v.speedY = v.speedY / math.abs(v.speedY)
            end
        end
    end

    -- Collisions with players
	for _,p in ipairs(Player.getIntersecting(v.x,v.y,v.x+v.width,v.y+v.height)) do
        local direction = (math.sign((p.x+(p.width/2))-(v.x+(v.width/2))))
        --Text.showMessageBox(string.format("p.y %d, npc.y %d", p.y, v.y))
        if p.y < v.y - v.height / 4 then
            data.killeridx = p.idx
            v:harm(HARM_TYPE_JUMP)
        elseif p.y > v.y + v.height / 2 and p:mem(0x140, FIELD_WORD) == 0 then
            p:kill()
        else
            SFX.play(77)
            v.speedX = -4 * direction
            p:mem(0x138, FIELD_FLOAT, 2.5 * direction)
            data.state = STATE_COLLIDED
        end
	end   
    -- Collisions with NPCs
	for _,np in ipairs(NPC.getIntersecting(v.x,v.y,v.x+v.width,v.y+v.height)) do
        if np.idx ~= v.idx then
            local direction = (math.sign((np.x+(np.width/2))-(v.x+(v.width/2))))
            --Text.showMessageBox(string.format("np.y %d, npc.y %d", p.y, v.y))
            v.speedX = -3 * direction
            np:mem(0x138, FIELD_FLOAT, 100 * direction)
            data.state = STATE_COLLIDED        
        end
	end    
    
end
function basicEnemy.onInitAPI()
    npcManager.registerEvent(npcID, basicEnemy, "onTickEndNPC")
end

return basicEnemy