337 lines
11 KiB
Lua
337 lines
11 KiB
Lua
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--the particles library
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--hold the library
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particle = {}
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--store all the entities
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particle_table = {}
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particle_count = 0
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--create entities
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function particle.create_particle(type,amount,sizex,sizey,texture,chunkx,chunky,posx,posy,min_velx,max_velx,min_vely,max_vely,item,max_life)
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for i = 1,amount do
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particle_count = particle_count + 1
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particle_table[particle_count] = {}
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particle_table[particle_count]["sizex"] = sizex
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particle_table[particle_count]["sizey"] = sizey
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particle_table[particle_count]["chunkx"] = chunkx
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particle_table[particle_count]["chunky"] = chunky
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particle_table[particle_count]["posx"] = posx
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particle_table[particle_count]["posy"] = posy
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particle_table[particle_count]["inertiax"] = math.random(min_velx,max_velx)/1000
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particle_table[particle_count]["inertiay"] = math.random(min_vely,max_vely)/1000
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particle_table[particle_count]["on_block"] = false
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particle_table[particle_count]["particle_in_unloaded_chunk"] = false
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particle_table[particle_count]["item"] = item
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particle_table[particle_count]["timer"] = 0
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particle_table[particle_count]["max_life"] = max_life
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if item then
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particle_table[particle_count]["texture"] = texture_table[item]
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else
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particle_table[particle_count]["texture"] = texture
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end
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end
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end
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--draw entities
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function particle.render_particle()
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if table.getn(particle_table) > 0 then
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--print(table.getn(particle_table))
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for i = 1,table.getn(particle_table) do
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--print(i,particle_table[i])
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if particle_table[i] then
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local drawx = (player_drawnx+(particle_table[i]["posx"]*scale)+(map_max*scale*(particle_table[i]["chunkx"]-chunkx))-(player.playerx*scale))-((particle_table[i]["sizex"]/2)*scale)
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local drawy = (player_drawny+(particle_table[i]["posy"]*scale)+(map_max*scale*(chunky-particle_table[i]["chunky"]))-(player.playery*scale))-((particle_table[i]["sizey"]/2)*scale)
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love.graphics.draw(particle_table[i]["texture"], drawx,drawy,0, scale*particle_table[i]["sizex"]/21, scale*particle_table[i]["sizey"]/21)--,scale*(particle_table[i]["sizex"]),scale*(particle_table[i]["sizey"]))
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--love.graphics.circle( "fill", drawx+((particle_table[i]["sizex"]/2)*scale), drawy+((particle_table[i]["sizey"]/2)*scale), 3 )
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end
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end
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end
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end
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--particle gravity
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function particle.gravity()
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if table.getn(particle_table) > 0 then
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for i = 1,table.getn(particle_table) do
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if particle_table[i] then
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--if particle_table[i]["magnetized"] == false then
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if particle_table[i]["particle_in_unloaded_chunk"] == false then
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--print(particle_table[i]["on_block"])
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if particle_table[i]["on_block"] == true then
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particle_table[i]["inertiay"] = 0
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--lastheight = math.floor(((map_max-player.playery)+(chunky*map_max)))
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--print(lastheight)
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--player.on_block = false
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else
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if particle_table[i]["inertiay"] < 0.3 then
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particle_table[i]["inertiay"] = particle_table[i]["inertiay"] + 0.01
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--print(particle_table[i]["inertiay"])
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end
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end
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else
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--print("particle "..i.." in unloaded chunk")
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particle_table[i]["inertiax"] = 0
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particle_table[i]["inertiay"] = 0
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end
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--end
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end
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end
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end
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end
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--applying the particle physics
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function particle.physics_apply(dt)
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--local oldposx,oldposy = player.playerx,player.playery
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if table.getn(particle_table) > 0 then
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for i = 1,table.getn(particle_table) do
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if particle_table[i] then
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particle.collision(i,particle_table[i].posx,particle_table[i].posy)
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particle.new_chunk(i,particle_table[i].posx,particle_table[i].posy)
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--collisionx(oldposx)
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--print(particle_table[i].inertiax)
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if math.abs(particle_table[i].inertiax) <= 0.005 then
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particle_table[i].inertiax = 0
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elseif particle_table[i].inertiax < 0 then
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particle_table[i].inertiax = particle_table[i].inertiax + 0.005
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elseif particle_table[i].inertiax > 0 then
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particle_table[i].inertiax = particle_table[i].inertiax - 0.005
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else
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particle_table[i].inertiax = particle_table[i].inertiax
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end
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particle_table[i]["timer"] = particle_table[i]["timer"] + dt
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if particle_table[i]["timer"] > particle_table[i]["max_life"] then
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table.remove(particle_table,i)
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particle_count = particle_count - 1
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end
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end
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end
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end
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end
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--
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function particle.collision(i,oldposx,oldposy)
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particle_table[i]["particle_in_unloaded_chunk"] = false
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local xer = {-particle_table[i]["sizex"]/4,particle_table[i]["sizex"]/4}
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local yer = {-particle_table[i]["sizey"]/4,particle_table[i]["sizey"]/4}
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local fall = true
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--check the corners (y)
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particle_table[i]["posy"] = particle_table[i]["posy"] + particle_table[i]["inertiay"]
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for q = 1,2 do
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for r = 1,2 do
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local squarex = math.floor(particle_table[i]["posx"]+xer[q])
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local squarey = math.floor(particle_table[i]["posy"]+yer[r])
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--use this to detect outside chunk 00
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local chunkerx = 0
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local chunkery = 0
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if squarex < 1 then
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chunkerx = -1
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squarex = map_max
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--print("adjusting x -1")
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elseif squarex > map_max then
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chunkerx = 1
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squarex = 1
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--print("adjusting x +1")
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end
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if squarey < 1 then
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chunkery = 1
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squarey = map_max
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--print("adjusting y +1")
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elseif squarey > map_max then
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chunkery = -1
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squarey = 1
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--print("adjusting y -1")
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end
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--print(chunkerx, chunkery, "|", squarex,squarey)
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--print( loaded_chunks[chunkerx][chunkery][squarex][squarey]["block"])
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--if (squarex1 > map_max or squarex1 <= 0) or (squarey1 > map_max or squarey1 <= 0) or blocks[loaded_chunks[0][0][squarex1][squarey1]["block"]]["collide"] ~= false then
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local particle_chunkx = particle_table[i]["chunkx"]
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local particle_chunky = particle_table[i]["chunky"]
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if loaded_chunks[particle_chunkx+chunkerx] and loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky] and loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky][squarex] and loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky][squarex][squarey] then
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if blocks[loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky][squarex][squarey]["block"]]["collide"] ~= false then
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---print("PUTTING BACK TO OLD")
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particle_table[i]["posy"] = oldposy
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if r == 2 then
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particle_table[i]["on_block"] = true
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--print("IT'S ON THE BLOCK")
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fall = false
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end
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if r == 1 then
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particle_table[i]["on_block"] = false
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end
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end
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else
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particle_table[i]["particle_in_unloaded_chunk"] = true
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end
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end
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end
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if fall == true then
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particle_table[i]["on_block"] = false
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end
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--check the corners(x)
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particle_table[i]["posx"] = particle_table[i]["posx"] + particle_table[i]["inertiax"]
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for q = 1,2 do
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for r = 1,3 do
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local squarex = math.floor(particle_table[i]["posx"]+xer[q])
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local squarey
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if r < 3 then
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squarey = math.floor(particle_table[i]["posy"]+yer[r])
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else
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squarey = math.floor(particle_table[i]["posy"])
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end
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--print(squarex)
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--use this to detect outside chunk 00
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local chunkerx = 0
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local chunkery = 0
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if squarex < 1 then
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chunkerx = -1
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squarex = map_max
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--print("adjusting x -1")
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elseif squarex > map_max then
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chunkerx = 1
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squarex = 1
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--print("adjusting x +1")
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end
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if squarey < 1 then
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chunkery = 1
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squarey = map_max
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--print("adjusting y +1")
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elseif squarey > map_max then
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chunkery = -1
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squarey = 1
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--print("adjusting y -1")
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end
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local particle_chunkx = particle_table[i]["chunkx"]
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local particle_chunky = particle_table[i]["chunky"]
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--if (squarex1 > map_max or squarex1 <= 0) or (squarey1 > map_max or squarey1 <= 0) or blocks[loaded_chunks[0][0][squarex1][squarey1]["block"]]["collide"] ~= false then
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if loaded_chunks[particle_chunkx+chunkerx] and loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky] and loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky][squarex] and loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky][squarex][squarey] then
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if blocks[loaded_chunks[particle_chunkx+chunkerx][chunkery+particle_chunky][squarex][squarey]["block"]]["collide"] ~= false then
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particle_table[i]["inertiax"] = 0
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particle_table[i]["posx"] = oldposx
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--print("stopping x inertia and pos")
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end
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else
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particle_table[i]["particle_in_unloaded_chunk"] = true
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end
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end
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end
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end
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--move particle into new chunk
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function particle.new_chunk(i,posx,posy)
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--print(math.floor(player.playerx))
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if math.floor(posx) < 1 then
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particle_table[i]["chunkx"] = particle_table[i]["chunkx"] - 1
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particle_table[i]["posx"] = particle_table[i]["posx"] + map_max -- put particle on other side of screen
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--print(" block x -1")
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return false
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elseif math.floor(posx) > map_max then
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particle_table[i]["chunkx"] = particle_table[i]["chunkx"] + 1
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particle_table[i]["posx"] = particle_table[i]["posx"] - map_max -- put particle on other side of screen
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--print("block x +1")
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return false
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elseif math.floor(posy) < 1 then
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particle_table[i]["chunky"] = particle_table[i]["chunky"] + 1
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particle_table[i]["posy"] = particle_table[i]["posy"] + map_max -- put particle on other side of screen
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--print(" block y -1")
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return false
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elseif math.floor(posy) > map_max then
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particle_table[i]["chunky"] = particle_table[i]["chunky"] - 1
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particle_table[i]["posy"] = particle_table[i]["posy"] - map_max -- put particle on other side of screen
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--print("block y +1")
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return false
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end
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return true
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end
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--magnetize items towards player
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--taken from sfan5's nuke mod in Minetest - https://forum.minetest.net/viewtopic.php?id=638
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--use this for magic
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--[[
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function particle.particle_magnet(i)
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local x = player.playerx - particle_table[i]["posx"]
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local y = player.playery - particle_table[i]["posy"]
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--adjust for chunk border
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if chunkx ~= particle_table[i]["chunkx"] then
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x = ((particle_table[i]["chunkx"]-chunkx)*map_max-x)*-1
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end
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if chunky ~= particle_table[i]["chunky"] then
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y = ((chunky-particle_table[i]["chunky"])*map_max-y)*-1
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end
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local calc1 = x*x+y*y --optimize
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particle_table[i]["magnetized"] = false
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--item magnet
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if particle_table[i]["timer"] > time_before_add and calc1 <= magnet_radius * magnet_radius + magnet_radius then
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local normalx,normaly,length = math.normalize(x,y)
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normalx,normaly = normalx*0.05,normaly*0.05
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particle_table[i]["inertiax"] = particle_table[i]["inertiax"] + normalx
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particle_table[i]["inertiay"] = particle_table[i]["inertiay"] + normaly
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particle_table[i]["magnetized"] = true
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end
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--inventory magnet add
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if particle_table[i]["timer"] > time_before_add and calc1 <= add_inventory_radius * add_inventory_radius + add_inventory_radius then
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inventory_add(particle_table[i]["item"])
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--particle_table[i] = nil
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table.remove(particle_table,i)
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particle_count = particle_count - 1
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--print("add to inventory")
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item_magnet_pickup:setPitch(love.math.random(80,120)/100)
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item_magnet_pickup:stop()
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item_magnet_pickup:play()
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end
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end
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]]--
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