From 8a8b67f6566b8e3d9027abd742ac438915add09c Mon Sep 17 00:00:00 2001 From: Jaidyn Ann Date: Sun, 20 Sep 2020 12:01:15 -0500 Subject: [PATCH] Add death fx (particles; fall through screen) --- main.lua | 121 ++++++++++++++++++++++++++++++++++++++----------------- 1 file changed, 84 insertions(+), 37 deletions(-) diff --git a/main.lua b/main.lua index 706e92d..17eb38e 100644 --- a/main.lua +++ b/main.lua @@ -19,15 +19,15 @@ function love.load () vScale = 0 maxScore = 0 + psystem = nil love.graphics.setDefaultFilter("nearest", "nearest", 0) - bg = love.graphics.newImage("art/bg/sky.png") a_ttf = love.graphics.newFont("art/font/alagard.ttf") + lifeText = love.graphics.newText(a_ttf, "Press Enter") waveText = love.graphics.newText(a_ttf, "") bigText = love.graphics.newText(a_ttf, "Bats & Pray") - -- for compliance with Statute 43.5 (2019); all birds must report births to local Officials birdRegistry = {} end @@ -102,6 +102,8 @@ end -- LOAD -------------------- function menu_load () + mode = menu + psystem = nil waveText:set("[Enter]") lifeText:set("") bigText:set("Bats & Pray") @@ -139,6 +141,7 @@ end -------------------- function gameover_load () mode = gameover + psystem = nil lifeText:set("High Score") waveText:set(" " .. maxScore) bigText:set("Game Over") @@ -154,6 +157,7 @@ end -- DRAW -------------------- function gameover_draw () + game_draw() end -------------------- @@ -184,6 +188,16 @@ function game_load () player = Bat:new() birdRegistry = {} + + -- death particles + ded = love.graphics.newImage("art/sprites/particle.png") + psystem = love.graphics.newParticleSystem(ded, 30) + psystem:setParticleLifetime(1) -- Particles live at least 2s and at most 5s. + psystem:setSizeVariation(1) + psystem:setEmissionRate(0) + psystem:setLinearAcceleration(-200, -200, 200, 200) -- Random movement in all directions. + psystem:setSpeed(40, 50) + psystem:setColors(1, 1, 1, 1, 1, 1, 1, 0) end -------------------- @@ -191,13 +205,16 @@ end -------------------- function game_update ( dt ) bird_n = table.maxn( birdRegistry ) + psystem:update ( dt ) if ( bird_n == 0 ) then nextWave() end for i = 1,bird_n do - birdRegistry[i]:update( dt ) + if ( false == birdRegistry[i]:update( dt ) ) then + break + end end player:update( dt ) @@ -212,6 +229,10 @@ function game_draw () birdRegistry[i]:draw() end player:draw() + + if ( psystem ) then + love.graphics.draw(psystem) + end end -------------------- @@ -247,14 +268,6 @@ function game_keyreleased (key) end end ----------------------------------------- --- DRAW ----------------------------------------- - - - - - ---------------------------------------- -- FLIER entity superclass @@ -270,6 +283,7 @@ function Flier:initialize ( x, y, actor ) self.moving = false self.flying = 0 self.actor = actor + self.living = true end -- generic flier update: physics @@ -296,8 +310,13 @@ end -- "physics" -------------------- function Flier:physics ( dt ) - self:physics_x( dt ) - self:physics_y( dt ) + if ( self.living ) then + self:physics_x( dt ) + self:physics_y( dt ) + return true + else + return self:physics_dead( dt ) + end end -- physics on the x-axis @@ -346,7 +365,7 @@ function Flier:physics_y ( dt ) self.y_vel = self.y_vel + gravity end - -- if on ground; stop gravity + -- if on ground; flap your wings if ( self.y > floor ) then self.y = floor self.flying = 2 @@ -355,6 +374,18 @@ function Flier:physics_y ( dt ) self.y = self.y + self.y_vel * dt end +function Flier:physics_dead ( dt ) + -- ignore all input, fall through bottom + gravity = 2 + self.y_vel = self.y_vel + gravity + self.y = self.y + self.y_vel * dt + if ( self.y > 610 ) then + self:killFinalize() + return false + else + return true + end +end @@ -392,7 +423,6 @@ end -- return whether or not the Bat's colliding with given object function Bat:checkCollision ( other ) if ( colliding( self, other ) ) then --- print("COLLISION AT " .. self.x .. " " .. other.x ) return true else return false @@ -415,17 +445,27 @@ function Bat:update ( dt ) self:checkBirdCollisions() end -function Bat:kill () +-- called after dead Bat falls through screen +function Bat:killFinalize() lives = lives - 1 lifeText:set("Life " .. lives) - self.y = -10 - self.x = 300 + if ( lives <= 0 ) then gameover_load() + else + self.y = -5 + self.x = 300 + self.living = true end end +function Bat:kill () + self.living = false + psystem:moveTo(self.x, self.y) + psystem:emit(30) +end + ---------------------------------------- -- BIRD enemy characters ---------------------------------------- @@ -434,19 +474,20 @@ Bird = class('Bird', Flier) function Bird:initialize ( x, y ) -- animations - species = math.random(1,2) + self.species = math.random(2,3) - if ( species == 1 ) then + if ( self.species == 3 ) then flapFrames = { 2, 3, 4, 5 } - else - flapFrames = { 7, 8, 9, 10 } - end - - if ( species == 1 ) then idleFrames = { 1 } - else + elseif ( self.species == 2 or self.species == 3 ) then + flapFrames = { 7, 8, 9, 10 } idleFrames = { 6 } end + if ( self.species == 3 ) then + self.direction = math.random(left, right) + else + self.direction = right + end birdSheet = love.graphics.newImage("art/sprites/bird.png") birdFlapAnim = animx.newAnimation{ @@ -471,20 +512,24 @@ function Bird:initialize ( x, y ) }:switch('idle') Flier.initialize( self, x, y, birdActor ) - - self.direction=right end function Bird:update ( dt ) self:destiny() - self:physics( dt ) + return self:physics( dt ) end -function Bird:kill () +function Bird:killFinalize() index = indexOf(birdRegistry, self) table.remove( birdRegistry, index ) end +function Bird:kill () + self.living = false + psystem:moveTo(self.x, self.y) + psystem:emit(30) +end + -- basic "ai" (determines where the bird should go) function Bird:destiny () @@ -494,19 +539,22 @@ end -- "ai" on x-axis of species 1 function Bird:destiny_x () - if ( species == 1 ) then - if ( self.x > 400 ) then + if ( self.species == 1 ) then + -- fly around the screen, left to right, right to left + if ( self.x > 450 ) then self.direction = left - elseif ( self.x < 200 ) then + elseif ( self.x < 250 ) then self.direction = right end - else + elseif ( self.species == 2 ) then + -- follow the player bat if ( self.x > player.x + 25 and math.random(0,50) == 25 ) then self.direction = left elseif ( self.x < player.x - 25 and math.random(0,50) == 25 ) then self.direction = right end end + self.moving = true end @@ -542,12 +590,11 @@ end -- assuming a and b are colliding, act accordingly -- aka, bounce-back or kill one function judgeCollision ( a, b ) - if ( a.y < b.y - 5 ) then + if ( a.y < b.y - 5 and a.living ) then b:kill() - elseif ( a.y > b.y + 5 ) then + elseif ( a.y > b.y + 5 and b.living ) then a:kill() else --- new_vel = greatestAbs( a.x_vel, b.x_vel ) a.x_vel = a.x_vel * -1 b.x_vel = b.x_vel * -1 end