explode materials

games/boybomb.p8

@@ -183,7 +183,7 @@ function start_level(n)
 end
 
 particles = {}
-function add_explosion(gx, gy)
+function add_explosion(gx, gy, colors)
     sfx(0)
     local x = gx*8+4
     local y = gy*8+4
@@ -193,7 +193,8 @@ function add_explosion(gx, gy)
             x=x, y=y, 
             vx=(rnd(1)+1)*cos(angle),
             vy=(rnd(1)+1)*sin(angle),
-            age=30+rnd(10),
+            age=10+rnd(10),
+            color=rnd(colors),
         })
     end
 end
@@ -212,16 +213,6 @@ function update_explosions()
         p.age -= 1
         if p.age <= 0 then
             deli(particles, i)
-        elseif p.age > 40 then
-            p.color = 8
-        elseif p.age > 30 then
-            p.color = rnd({8, 9})
-        elseif p.age > 20 then 
-            p.color = 9
-        elseif p.age > 10 then
-            p.color = rnd({9, 10})
-        elseif p.age > 5 then
-            p.color = 10
         end
     end
 end
@@ -273,7 +264,7 @@ function process_block(x, y)
     -- called on each block each frame
     local block = puzzle_grid[y][x]
     if block == GRID_EXPLODE_NEXT then
-        add_explosion(x, y)
+        add_explosion(x, y, {4, 15}) -- wood
         puzzle_grid[y][x] = GRID_EXPLODE
     elseif block == GRID_EXPLODE then
         if y > 1 then
@@ -310,7 +301,7 @@ function update_level()
     end
     if t() - last_gravity > fall_speed then
         last_gravity = t()
-        for y=1,GRID_H do
+        for y=GRID_H,1,-1 do
             for x=1,GRID_W do
                 process_block(x, y)
                 -- fall down
@@ -337,7 +328,7 @@ function update_level()
     if exploding then
         if bomb_spr.frame > 10 and bomb_spr.anim then
             -- when explosion hits last frame, particles / update grid
-            add_explosion(bomb_x, bomb_y)
+            add_explosion(bomb_x, bomb_y, {8, 9, 10})
             puzzle_grid[bomb_y][bomb_x] = GRID_EXPLODE
         end
         -- exploding means we're done before input comes