src/game/level/level_editor/player_layer.c

   1 #include <stdio.h>
   2
   3 #include <SDL.h>
   4
   5 #include "game/camera.h"
   6 #include "system/stacktrace.h"
   7 #include "player_layer.h"
   8 #include "system/nth_alloc.h"
   9 #include "system/log.h"
  10 #include "undo_history.h"
  11 #include "system/memory.h"
  12
  13 typedef struct {
  14     PlayerLayer *layer;
  15     Vec2f position;
  16     Color color;
  17 } PlayerUndoContext;
  18
  19 static
  20 PlayerUndoContext player_layer_create_undo_context(PlayerLayer *player_layer)
  21 {
  22     PlayerUndoContext context = {
  23         .layer = player_layer,
  24         .position = player_layer->position,
  25         .color = player_layer->prev_color
  26     };
  27
  28     return context;
  29 }
  30
  31 static
  32 void player_layer_undo(void *context, size_t context_size)
  33 {
  34     trace_assert(context);
  35     trace_assert(sizeof(PlayerUndoContext) == context_size);
  36
  37     PlayerUndoContext *undo_context = context;
  38     PlayerLayer *player_layer = undo_context->layer;
  39
  40     player_layer->position = undo_context->position;
  41     player_layer->color_picker = create_color_picker_from_rgba(undo_context->color);
  42     player_layer->prev_color = undo_context->color;
  43 }
  44
  45 PlayerLayer create_player_layer(Vec2f position, Color color)
  46 {
  47     return (PlayerLayer) {
  48         .position = position,
  49         .color_picker = create_color_picker_from_rgba(color),
  50         .prev_color = color
  51     };
  52 }
  53
  54 PlayerLayer chop_player_layer(Memory *memory, String *input)
  55 {
  56     trace_assert(memory);
  57     trace_assert(input);
  58
  59     String line = chop_by_delim(input, '\n');
  60     float x = strtof(string_to_cstr(memory, chop_word(&line)), NULL);
  61     float y = strtof(string_to_cstr(memory, chop_word(&line)), NULL);
  62     Color color = hexs(chop_word(&line));
  63
  64     return create_player_layer(vec(x, y), color);
  65 }
  66
  67 LayerPtr player_layer_as_layer(PlayerLayer *player_layer)
  68 {
  69     LayerPtr layer = {
  70         .type = LAYER_PLAYER,
  71         .ptr = player_layer
  72     };
  73     return layer;
  74 }
  75
  76 int player_layer_render(const PlayerLayer *player_layer,
  77                         const Camera *camera,
  78                         int active)
  79 {
  80     trace_assert(player_layer);
  81     trace_assert(camera);
  82
  83     if (camera_fill_rect(
  84             camera,
  85             rect_from_vecs(
  86                 player_layer->position,
  87                 vec(25.0f, 25.0f)),
  88             color_scale(
  89                 color_picker_rgba(&player_layer->color_picker),
  90                 rgba(1.0f, 1.0f, 1.0f, active ? 1.0f : 0.5f))) < 0) {
  91         return -1;
  92     }
  93
  94     if (active && color_picker_render(
  95             &player_layer->color_picker,
  96             camera)) {
  97         return -1;
  98     }
  99
 100     return 0;
 101 }
 102
 103 int player_layer_event(PlayerLayer *player_layer,
 104                        const SDL_Event *event,
 105                        const Camera *camera,
 106                        UndoHistory *undo_history)
 107 {
 108     trace_assert(player_layer);
 109     trace_assert(event);
 110     trace_assert(camera);
 111     trace_assert(undo_history);
 112
 113     int selected = 0;
 114     if (color_picker_event(
 115             &player_layer->color_picker,
 116             event,
 117             camera,
 118             &selected) < 0) {
 119         return -1;
 120     }
 121
 122     if (selected && !color_picker_drag(&player_layer->color_picker)) {
 123         PlayerUndoContext context =
 124             player_layer_create_undo_context(player_layer);
 125         undo_history_push(
 126             undo_history,
 127             player_layer_undo,
 128             &context,
 129             sizeof(context));
 130         player_layer->prev_color = color_picker_rgba(&player_layer->color_picker);
 131     }
 132
 133     if (!selected &&
 134         event->type == SDL_MOUSEBUTTONDOWN &&
 135         event->button.button == SDL_BUTTON_LEFT) {
 136
 137         PlayerUndoContext context =
 138             player_layer_create_undo_context(player_layer);
 139
 140         undo_history_push(
 141             undo_history,
 142             player_layer_undo,
 143             &context, sizeof(context));
 144
 145         player_layer->position =
 146             camera_map_screen(camera,
 147                               event->button.x,
 148                               event->button.y);
 149     }
 150
 151     return 0;
 152 }
 153
 154 int player_layer_dump_stream(const PlayerLayer *player_layer,
 155                              FILE *filedump)
 156 {
 157     trace_assert(player_layer);
 158     trace_assert(filedump);
 159
 160     fprintf(filedump, "%f %f ", player_layer->position.x, player_layer->position.y);
 161     color_hex_to_stream(color_picker_rgba(&player_layer->color_picker), filedump);
 162     fprintf(filedump, "\n");
 163
 164     return 0;
 165 }