Game Maker Studio: How to Create a Flickering Light Glow.

Channel:

MC Designs

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Published on March 24, 2019 2:16:18 AM ● Video Link: https://www.youtube.com/watch?v=k2t2Q4iAI5c

Duration: 13:04

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GMX File: https://bit.ly/2YjE4TL

(Note): Was not said in video, Be sure the obj_lighting image is in the room, or there will be a crash message. Obj_lighting needs to be in the room, so the glow effect will appear. In the upload the obj_lighting image is in the room and glow will appear.

obj_lighting, Depth -800, Be sure obj_lighting is set to a high number of Depth, over you're other images.

Events:

Create

Actions:

globalvar light;
light = surface_create(view_wview,view_hview)

Events:

Step

Actions:

surface_set_target(light);
draw_set_color(c_white);
draw_rectangle(0,0,view_wview,view_hview,false)
surface_reset_target();

Events:

Draw

Actions:

draw_set_blend_mode(bm_subtract);
draw_surface(light,view_xview,view_yview);
draw_set_blend_mode(bm_normal);

obj_torch, Depth -5

Events:

End Step

Actions:

size = 100;
draw_set_blend_mode(bm_subtract);
surface_set_target(light);
draw_ellipse_color(x-size/2-view_xview,y-size/2-view_yview,x+size/2-view_xview,y+size/2-view_yview,c_orange,c_black,false);
surface_reset_target();
draw_set_blend_mode(bm_normal)

obj_torch2 , Depth -5

Events:

End Step

Actions:

size = 50;
draw_set_blend_mode(bm_subtract);
surface_set_target(light);
draw_ellipse_color(x-size/2-view_xview,y-size/2-view_yview,x+size/2-view_xview,y+size/2-view_yview,c_orange,c_black,false);
surface_reset_target();
draw_set_blend_mode(bm_normal)