move ship typedefs before ship impls
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updatedshmup.p8
281
updatedshmup.p8
@ -441,9 +441,147 @@ function grab_p1_butts()
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end
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-->8
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--ships, including player
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--ship behavior
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-- XXX BOOKMARK XXX
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scrollrate = 0.25 --in px/frame
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ship_m = {
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-- ships have no shield by default
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shield = 0,
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maxshield = 0,
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shieldcost = 32767.9,
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shieldcooldown = 180,
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-- default generator behavior:
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-- 10 seconds for a full charge
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max_power = 600,
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power = 600,
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generator = 1, -- power gen per frame
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invincible_until = -32768,
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slip = true, -- most enemies slide
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xmomentum = 0,
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ymomentum = 0,
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}
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ship_t = {
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__index = ship_m,
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}
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function ship_m:die()
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self.dead = true
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if (self.hp <= 0) boom(self.x+self.size*4, self.y+self.size*4,12*self.size, self.boss)
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end
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function ship_m:move()
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self:refresh_shield()
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self.power = min(self.max_power, self.power + self.generator)
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butt = self:grab_butts()
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if (butt[5] > 0) self:maybe_shoot(self.main_gun)
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if (butt[4] > 0) self:maybe_shoot(self.special_gun)
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if (butt[0]-butt[1] ~= 0 or butt[2]-butt[3] ~= 0) spark(self.sparks, self.x + 4*self.size, self.y + 4*self.size, butt, self.thrust, self.sparkodds)
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self.xmomentum += (self.thrust * butt[1]) - (self.thrust * butt[0])
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self.ymomentum += (self.thrust * butt[3]) - (self.thrust * butt[2])
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self.xmomentum = mid(-self.maxspd, self.maxspd, self.xmomentum)
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self.ymomentum = mid(-self.maxspd, self.maxspd, self.ymomentum)
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self.x += self.xmomentum
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self.y += self.ymomentum
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if self == primary_self then
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self.x = mid(0, 112 - 8 * self.size, self.x)
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self.y = mid(0, 128 - 8 * self.size, self.y)
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end
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--friction
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local d = self.drag
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self.xmomentum -= mid(d, -d, self.xmomentum)
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self.ymomentum -= mid(d, -d, self.ymomentum)
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-- "scrolling" behavior
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if self.slip then
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self.y += scrollrate
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if self.y >= 128 then
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self:die()
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return true
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end
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end
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return false
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end
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function ship_m:draw()
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if(self.fx_pal) pal(self.fx_pal)
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spr(self.sprite, self.x, self.y, self.size, self.size)
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pal()
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end
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function hurtbox(ship)
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local h = ship.hurt
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return {
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x=ship.x + h.x_off,
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y=ship.y + h.y_off,
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width=h.width,
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height=h.height
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}
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end
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function ship_m:maybe_shoot(gun)
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if (not gun) return
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if (self.power < gun.power) return
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if (not gun:shoot(self.x + self.fire_off_x, self.y + self.fire_off_y)) return
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self.power -= gun.power
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end
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function ship_m:hitship(other)
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return self:hitsomething(1)
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end
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function ship_m:hitbullet(b)
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return self:hitsomething(b.damage)
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end
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function ship_m:hitsomething(dmg)
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if (dmg <= 0) return false
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if (lframe < self.invincible_until) return false
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self.shield_refresh_ready = lframe + self.shieldcooldown
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if self.shield >= dmg then
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self.shield -= dmg
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self:ow(true)
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return false
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end
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dmg -= self.shield
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self.shield = 0
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self.hp -= dmg
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if self.hp <= 0 then
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self:die()
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return true
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end
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self:ow(false)
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return false
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end
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function ship_m:ow(shielded)
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if (shielded) then
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blip(self,12,3)
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return
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end
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blip(self, 7, 3)
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end
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function ship_m:refresh_shield()
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if (self.shield >= self.maxshield) return
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if (lframe < self.shield_refresh_ready) return
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if (self.power < self.shieldcost) return
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self.shield += 1
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self.power -= self.shieldcost
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self.shield_refresh_ready = lframe + self.shieldcooldown
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end
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-->8
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--ships, including player
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function init_ship_mt()
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setmetatable(player, ship_t)
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@ -693,145 +831,6 @@ function spawn_xl_chasey_at(x, y)
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return c
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end
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-->8
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--ship behavior
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scrollrate = 0.25 --in px/frame
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ship_m = {
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-- ships have no shield by default
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shield = 0,
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maxshield = 0,
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shieldcost = 32767.9,
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shieldcooldown = 180,
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-- default generator behavior:
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-- 10 seconds for a full charge
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max_power = 600,
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power = 600,
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generator = 1, -- power gen per frame
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invincible_until = -32768,
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slip = true, -- most enemies slide
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xmomentum = 0,
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ymomentum = 0,
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}
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ship_t = {
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__index = ship_m,
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}
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function ship_m:die()
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self.dead = true
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if (self.hp <= 0) boom(self.x+self.size*4, self.y+self.size*4,12*self.size, self.boss)
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end
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function ship_m:move()
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self:refresh_shield()
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self.power = min(self.max_power, self.power + self.generator)
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butt = self:grab_butts()
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if (butt[5] > 0) self:maybe_shoot(self.main_gun)
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if (butt[4] > 0) self:maybe_shoot(self.special_gun)
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if (butt[0]-butt[1] ~= 0 or butt[2]-butt[3] ~= 0) spark(self.sparks, self.x + 4*self.size, self.y + 4*self.size, butt, self.thrust, self.sparkodds)
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self.xmomentum += (self.thrust * butt[1]) - (self.thrust * butt[0])
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self.ymomentum += (self.thrust * butt[3]) - (self.thrust * butt[2])
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self.xmomentum = mid(-self.maxspd, self.maxspd, self.xmomentum)
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self.ymomentum = mid(-self.maxspd, self.maxspd, self.ymomentum)
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self.x += self.xmomentum
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self.y += self.ymomentum
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if self == primary_self then
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self.x = mid(0, 112 - 8 * self.size, self.x)
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self.y = mid(0, 128 - 8 * self.size, self.y)
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end
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--friction
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local d = self.drag
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self.xmomentum -= mid(d, -d, self.xmomentum)
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self.ymomentum -= mid(d, -d, self.ymomentum)
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-- "scrolling" behavior
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if self.slip then
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self.y += scrollrate
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if self.y >= 128 then
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self:die()
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return true
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end
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end
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return false
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end
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function ship_m:draw()
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if(self.fx_pal) pal(self.fx_pal)
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spr(self.sprite, self.x, self.y, self.size, self.size)
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pal()
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end
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function hurtbox(ship)
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local h = ship.hurt
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return {
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x=ship.x + h.x_off,
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y=ship.y + h.y_off,
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width=h.width,
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height=h.height
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}
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end
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function ship_m:maybe_shoot(gun)
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if (not gun) return
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if (self.power < gun.power) return
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if (not gun:shoot(self.x + self.fire_off_x, self.y + self.fire_off_y)) return
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self.power -= gun.power
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end
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function ship_m:hitship(other)
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return self:hitsomething(1)
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end
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function ship_m:hitbullet(b)
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return self:hitsomething(b.damage)
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end
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function ship_m:hitsomething(dmg)
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if (dmg <= 0) return false
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if (lframe < self.invincible_until) return false
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self.shield_refresh_ready = lframe + self.shieldcooldown
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if self.shield >= dmg then
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self.shield -= dmg
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self:ow(true)
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return false
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end
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dmg -= self.shield
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self.shield = 0
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self.hp -= dmg
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if self.hp <= 0 then
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self:die()
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return true
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end
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self:ow(false)
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return false
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end
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function ship_m:ow(shielded)
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if (shielded) then
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blip(self,12,3)
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return
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end
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blip(self, 7, 3)
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end
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function ship_m:refresh_shield()
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if (self.shield >= self.maxshield) return
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if (lframe < self.shield_refresh_ready) return
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if (self.power < self.shieldcost) return
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self.shield += 1
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self.power -= self.shieldcost
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self.shield_refresh_ready = lframe + self.shieldcooldown
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end
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-->8
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-- collisions
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-- box: x, y, width, height
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